T3RRA 3 Operator's Manual

1 | General

1.1 | Important Notices
Important: Please read this before using any of our software products.
T3RRA Operators Manual
© 2026 T3RRA
Notice of Rights
No part of this publication may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language or computer language, in any form or by any means, electronic, mechanical, magnetic, optical, chemical, manual, or otherwise, without the prior written permission of T3RRA Pty Ltd.
Trademark Notice
T3RRA Cutta™, T3RRA Plane™, T3RRA Ditch™, T3RRA Survey™, T3RRA Apply™, COMMAND™ and Level COMMAND™ software images and their logos are the exclusive trademarks of T3RRA. All other trademarks, service marks, software images and logos used in this documentation belong to their respective owners.
Notice of Liability
The information in this document is distributed on an ‘as is’ basis, without warranty. While every precaution has been taken in the preparation of this manual, neither the authors nor T3RRA shall have any liability to any person or entity with respect to any loss or damage caused or alleged to be caused directly or indirectly by the instructions contained in this book or by the machine-control systems and associated equipment products described in it.
Disclaimer
We make a sincere effort to ensure the accuracy of the material described herein; however, T3RRA makes no warranty, expressed or implied, with respect to the quality, correctness, reliability, accuracy, or freedom from error of this document or the products it describes. Data used in examples and sample data files are intended to be fictional. Any resemblance to real persons or companies is entirely coincidental. While reasonable effort has been made to ensure the accuracy of this publication, T3RRA assumes no responsibility for errors or omissions, or for damages resulting from use of the information contained within this manual. Information contained within this manual was current at the time of publication.

1.2 | About Our Software
This manual explains how to operate our software for in-cab landforming design and implementation to improve field terrain. Changes to field surface contours most often support efficient irrigation or better drainage. They nearly always also improve trafficability and create additional management opportunities.
T3RRA Cutta V2 and V3 are designed to operate with different machine control systems. T3RRA Cutta V2 operates with John Deere iGrade™, while T3RRA Cutta V3 operates with T3RRA LevelCOMMAND. Each version is specifically configured for its respective control system and is not interchangeable.
Software packages
We offer several packages to meet different market requirements:
T3RRA Cutta 3 is our most fully featured application. It includes all our functionality for full field landforming, ditch creation and levee delineation.
T3RRA Ditch 3 includes all the ditch and levee creation capabilities of T3RRA Cutta, but is not appropriate for full field earthworks.
T3RRA Plane 3 is for Best-fit full field design projects.
T3RRA Apply 3 is for surveying and applying dirt moving projects without the design step.
T3RRA Survey 3 is solely for gathering elevation data.
T3RRA Design V2 / Plus and Cutta Desktop are related desktop design products: a traditional “keyboard and mouse” application for office use. Their advanced nature requires separate manuals; refer to that specific manual for more information.
Terminology in this manual
T3RRA Cutta 3, T3RRA Ditch 3, T3RRA Plane 3, T3RRA Apply 3 and T3RRA Survey 3 use the same basic building blocks and share many user interface screens and functions. This manual uses “T3RRA software” for topics common to all five applications. Information specific to one or two applications is identified by the actual software name.

1.3 | Intended Use
Supported equipment and tasks
Use T3RRA In-cab Software on supported construction, landforming and earthmoving machinery fitted with compatible hardware, GNSS receivers, hydraulic interfaces and machine sensors.
During earthmoving and landforming, the system assists operators with terrain guidance, grading, surface control and automatic implement positioning.
Performance and operator responsibilities
Performance depends on all of the following:
Correct installation
Machine calibration
GNSS signal quality
Terrain conditions
Hydraulic performance
Operator supervision
T3RRA In-cab Software provides operator assistance and terrain control; it does not transfer responsibility from the operator. At all times, the operator is responsible for safe machine operation, terrain awareness and final work quality.
Only personnel familiar with machine-control systems and safe equipment operating procedures may operate the system.

1.4 | Choosing an In-cab Tablet PC
Compatible hardware and display
T3RRA in-cab software runs on any 64-bit Windows 11 PC, whether a desktop computer, laptop or tablet PC. A keyboard and mouse can be used, but the software is designed primarily for a touchscreen interface.
For most installations, a Windows tablet PC offers the best balance of portability, usability and mounting flexibility in the machine cab. For the best operating experience, use landscape orientation and a screen size of 10 inches or larger, as recommended.
Consumer and rugged tablets
Windows tablets vary in performance, durability and price. Choose according to your operating environment and business requirements. The two broad categories are compared below.
T3RRA supplies ruggedised RuggON tablets designed for demanding in-cab environments. Compared with consumer-grade devices, their resistance to vibration, dust, moisture and temperature extremes significantly reduces hardware failures, downtime and warranty claims.
Consumer tablets can be used if they meet the minimum hardware requirements and remain in good working condition. Many customers have used devices such as the Microsoft Surface Pro successfully in cab, however these are not recommended for extended in cab use. 
Consumer devices are generally intended for office or home use, not continuous operation in harsh agricultural or construction environments. Vibration, dust, weather and temperature extremes can reduce their reliability and service life.
Consider the cost of unexpected downtime as well as the purchase price. Where machine availability is critical, a ruggedised tablet—or a readily available spare tablet—is strongly recommended.
Note - If a consumer tablet is chosen, such as a Windows Surface Pro, Qualcomm Snapdragon processors are NOT supported. 
Reliable operation and maintenance
Modern tablet PCs can run many applications at once. For reliable machine-control performance, avoid installing unnecessary software or running resource-intensive applications while operating T3RRA software. Excessive processor, memory or storage usage may reduce system responsiveness.
Maintain your tablet regularly. During planned maintenance periods, install Windows updates, T3RRA software updates and any recommended driver or firmware updates. Keeping the operating system and software current helps maximise reliability and performance. 

1.5 | Consider the System as a Whole
Accurate machine control relies on the entire landforming system, not on T3RRA software alone. T3RRA software combines terrain design, guidance and implementation with the machine-control capabilities of COMMAND hardware. To achieve the expected accuracy, the mechanical, hydraulic, electrical, GNSS and software components must work together reliably.
T3RRA software performance depends on the condition, configuration and calibration of the surrounding equipment. Software alone cannot compensate for poor machine maintenance, inaccurate GNSS positioning or incorrect COMMAND configuration.
Before beginning work
Verify each of the following before beginning work:
The machine is in good mechanical, hydraulic and electrical condition.
The implement is correctly installed and in good working order.
The RTK GNSS receiver, corrections source and, where applicable, base station are configured for reliable positioning accuracy.
COMMAND Hardware is correctly configured and calibrated.
The tablet PC is up to date, has sufficient available storage and is free from unnecessary software that may reduce system performance.
T3RRA software is correctly installed, configured and updated to the latest recommended version.
Operator responsibility
Stay alert when using T3RRA software. T3RRA software and COMMAND Hardware assist the operator to improve productivity and grading accuracy; they do not replace the operator’s judgement, awareness or responsibility. Continuously monitor machine behaviour, positioning accuracy and work quality during every operation, and be prepared to intervene whenever required. Failure to do so may reduce accuracy, produce unsatisfactory work or create unsafe operating conditions.

1.6 | System Startup
Starting T3RRA Software
Most installations are configured to start T3RRA software automatically when the tablet PC boots.
If the software does not start automatically and you want to enable this functionality, follow the configuration instructions in the accompanying troubleshooting guide.
If T3RRA software has not started automatically after Windows has finished loading, launch it manually: double-click the appropriate desktop shortcut.
Desktop shortcut illustration for launching T3RRA software.
After the software starts, the T3RRA home screen is displayed.

1.7 | Installing T3RRA Software
T3RRA software is typically installed and configured by your authorised T3RRA dealer as part of system commissioning.
Before installing the software, ensure the tablet PC has a reliable internet connection and is fully updated through Windows Update. Keeping Windows current helps ensure compatibility with the latest T3RRA software releases.
System Requirements
Component
Minimum
Recommended
Operating System
Windows 10 (64-bit)
Windows 11 (64-bit)
Processor
64-bit dual-core processor
Intel® Core™ i5, AMD Ryzen™ 5, or better
Memory
8 GB RAM
16 GB RAM
Storage
256 GB available storage
512 GB SSD or greater
Graphics
Integrated graphics
Integrated or discrete graphics
Communications
USB port
Dedicated RS-232 serial port or high-quality USB-to-Serial adapter
Display
Touchscreen
High-brightness touchscreen suitable for outdoor use
Network
Internet connection for installation and updates
Reliable Wi-Fi connection for regular updates
Recommended Hardware 
T3RRA recommends using a ruggedised Windows tablet PC designed for in-cab operation. Rugged tablets provide improved resistance to vibration, dust, moisture and temperature extremes, resulting in greater reliability and reduced downtime in demanding field environments.
Preparing a Tablet for In-Cab Operation
For the best in-cab experience, we recommend the following Windows settings:
Set Power & Sleep to Never to prevent the tablet from entering sleep mode during operation.
Disable Connect automatically for saved Wi-Fi networks that are not regularly used in the field.
Set the display brightness to an appropriate level for outdoor visibility.
Enable Automatically hide the taskbar in both desktop and tablet modes to maximise available screen space.
Many of these settings can be configured automatically during installation using the Tablet Optimisation page of the T3RRA installer.
Software Updates
After installation, ensure the latest version of T3RRA software is installed before beginning work.
To check for updates:
Open Settings.
Select the Application tab.
Click Download Updates.
We recommend regularly connecting the tablet to the internet—either at home or in the office—to allow Windows and T3RRA software updates to download and install. Performing updates and verifying system operation before the start of each earthmoving season is considered best practice.
Antivirus Software
Some antivirus software may prevent T3RRA software from installing or operating correctly.
If antivirus software is installed, add the T3RRA installation folder to the antivirus exclusion list. Refer to the troubleshooting section if installation issues are encountered.
Starting T3RRA with Windows
T3RRA software can be configured to start automatically whenever Windows starts.
To enable or disable this feature:
Open Settings.
Select the Application tab.
Open the Setup section.
Enable or disable Start T3RRA when computer starts.

1.8 | Updating T3RRA Software
T3RRA releases regular software updates to improve reliability, add features and enhance compatibility with supported hardware. Keeping the software up to date provides access to the latest improvements and bug fixes.
Checking for updates
At startup, T3RRA software checks for a newer version only when the tablet has an active internet connection.
When a check is performed, a brief notification in the lower-left corner of the main window reports one of two results:
The software is already up to date.
A newer software version is available for download.
Installing an update
To check for and install updates manually:
Open Settings.
Select the Application tab.
Click Download Updates.
If an update is available, the download starts immediately.
Settings: Application tab with Download Updates.
A progress window shows the download status. When the download finishes, you are prompted to close and restart T3RRA software to complete installation.
Important: Save any work in progress before restarting the software. A reliable internet connection is recommended for downloading updates.
When should you update?
As a general rule, avoid updating software while actively working in the field.
Recommended times to install updates are:
Before an earthmoving season starts.
Between jobs.
When your T3RRA dealer or support representative advises it.
When an update addresses a problem you have experienced or adds functionality you require.
If the current version operates reliably and your application does not require an update, there is generally no need to update immediately.
Reverting an update
Previous software versions can be restored if an update causes unexpected issues.
Perform a software rollback only under guidance from T3RRA or your authorised dealer. If you need assistance, contact T3RRA Technical Support before attempting to revert to an earlier version.

1.9 | Glossary
As-Applied: The field's current state as work progresses, also called As-Built. As earthworks are completed, the As-Applied surface typically changes from matching the original surface to matching the design surface.
Backslope (Batter): The sloping sides that connect the surrounding ground surface to the invert of a drain or channel.
Baud Rate: Serial-link data transmission speed, measured in bits per second (bps). Successful communication requires both devices to use the same baud rate.
Benchmark: A surveyed location whose known position and elevation provide a reference for calibration and verification. Also called a Control Point.
Bi-directional Error: A consistent vertical error that reverses when travel direction reverses. Adjusting system look-ahead time can often correct it.
Blade Shift: Vertical or lateral adjustment of an implement blade, made manually by the operator or automatically by the machine-control system.
Borrow Pit: An excavation left by removing material for use elsewhere in a project.
Bulking: Performing the largest cuts and fills before final grading, with productivity taking priority over final accuracy.
Burning: Embedding a design element in an existing surface.
Button Press: Selecting an on-screen control with the touchscreen; also called tapping.
Com Port (Serial Port): A hardware interface for exchanging serial data between devices. A COM port can be a physical connector or a virtual port created by a USB-to-Serial adapter or internal hardware.
Control Surface: The reference surface from which the machine-control system determines the required implement position. Depending on the operation, this can be an existing terrain surface, a design surface or an As-Applied surface.
Cross Slope: Slope perpendicular to the main direction of travel, defining a surface's side-to-side inclination.
CSV (Comma Separated Values): A text-based format for tabular data that spreadsheet applications and text editors can open.
Cut Area: An area where reaching the target surface requires material removal.
Cut/Fill Map: A colour-coded map of the difference between the original and design surfaces.
Cut/Fill Ratio: The ratio of excavated material volume to the volume required after placement and compaction. A ratio of 1.2, for example, means 1.2 m³ of excavated material is needed to produce 1.0 m³ of compacted fill.
DEM (Digital Elevation Model): See Digital Elevation Model.
Design Surface: A digital model of the intended finished terrain after earthworks.
Detent: A John Deere hydraulic control mode in which iGrade™ can accept remote control commands from an external system such as T3RRA software.
Digital Elevation Model (DEM): A digital representation of terrain elevations over an area, used in surveying, design and machine-control applications.
Dynamic Blade Limit: A T3RRA feature that restricts cutting below the As-Applied surface to help prevent over-cutting and maintain the intended design.
Feather: Gradually blending a surface or design into another to make a smooth transition.
Fill Area: An area where reaching the target surface requires material addition.
Finishing: Final grading passes to achieve the target design elevation and surface quality.
Geo-referenced: Data or imagery containing geographic coordinates so it can be positioned accurately on the Earth's surface.
GNSS (Global Navigation Satellite System): The collective name for satellite positioning systems, including GPS, GLONASS, Galileo and BeiDou. Modern receivers typically improve positioning accuracy by using several constellations at once.
GPS (Global Positioning System): The United States satellite navigation system. Unless stated otherwise, this manual commonly uses GPS to mean GNSS positioning.
Grade: The elevation or slope required at a location relative to the design surface.
Haul: Transporting excavated material between locations.
Heading: The direction the machine points or travels, typically given in degrees relative to north.
Implementation: Constructing the designed terrain by moving material to match the target surface.
Importing/Exporting Dirt: Importing brings material into a project area from elsewhere. Exporting removes material from the project area for use or disposal elsewhere.
Land Forming: Reshaping terrain with curved or variable surfaces to improve drainage, irrigation or productivity.
Land Levelling: Reshaping terrain with predominantly planar surfaces to improve irrigation or drainage.
Look-Ahead: A control parameter that predicts machine movement and commands hydraulic adjustments slightly in advance, improving grading performance and reducing control error.
Machine Control: Hardware and software that automatically or semi-automatically position an implement according to a target design.
NMEA (National Marine Electronics Association): A communications standard commonly used for exchanging GNSS and navigation data between devices.
On-Grade: The state in which the implement cutting edge is at the elevation required to achieve the target design.
Original Surface: The surveyed or imported terrain model of the field before earthworks start.
Pixel: The smallest element of a raster surface. Its size determines surface resolution and the level of detail represented.
Primary Slope / Secondary Slope: Primary slope is the dominant direction of fall across a surface. Secondary slope, also called cross slope, is perpendicular to primary slope.
Project File: A proprietary T3RRA file containing survey, design and project information, with the 
.tci extension.
Raster: A grid of regularly spaced cells (pixels), each holding an elevation value.
Remote Control: A mode that lets an external device, such as T3RRA software, send hydraulic control commands to a compatible machine-control system.
RTK (Real-Time Kinematic): A high-accuracy GNSS positioning technique using corrections from a base station or network to achieve centimetre-level accuracy.
Settle (Shrink): The decrease in soil volume after material is placed and compacted.
Slope: The rate of elevation change across a surface. In T3RRA software, positive slope values mean downhill gradients.
Stockpile: A temporary pile of excavated material kept for later use.
Surface: A digital terrain representation, typically built from survey points or raster elevation data, for design, guidance and machine control.
Survey Point: A recorded position with horizontal coordinates (X, Y) and elevation (Z). Sets of survey points generate terrain surfaces.
TCM (Terrain Compensation Module): A John Deere sensor built into StarFire™ receivers that measures machine attitude to improve positioning and cross-slope accuracy.
Time-out: Communication termination because a device or application does not respond within the expected period.
Topography: The physical shape and surface characteristics of land in an area.
Topsoiling: Placing a topsoil layer over a finished surface to restore fertile material after earthworks.
Washboarding: Repeated vertical implement oscillation that creates a corrugated surface like a traditional washboard.
Zeroing: Calibrating measured elevations to the implement's physical cutting edge. This compensates for GPS antenna offsets, implement geometry, machine setup and differences between surveying and implementation so displayed elevations accurately represent the cutting edge position.

2 | COMMAND System Overview

2.1 | System Architecture
Theory of Operation
COMMAND is an electronic control system designed by T3RRA consisting of an Electronic Control Unit (ECU) along with a harnessing system to interface with different sensors, hydraulic and tractor systems. 
Once installed and configured, the ECU acts as both a control system and interface. It will communicate with a PC running T3RRA software, the earthmoving implement and sensors providing real-time feedback on the position of the implement, and tractor diagnostic data where available. 
Level COMMAND can then control the implement based on your current position and design elevation, while satisfying constraints e.g. cut depth limits. 
Manual Control Mode
In Manual Control Mode, and also when the system arming switch is deactivated, COMMAND is Disengaged and any prescribed elevations sent to the ECU will not result in activation of hydraulics. Hydraulic outputs can still be activated using a connected joystick or tractor SCV levers. These will function regardless of whether COMMAND Automatic Control is Disengaged or Engaged.
Automatic Control Mode
Once the operator has Armed the system and Engaged Automatic Control Mode, the ECU activates hydraulic outputs based on:
Prescribed elevation
Current elevation
Calibration parameters
Tracking sensitivity
Tracking/acquire thresholds
While Engaged, joystick movement can override automatic control. Depending on configuration, joystick movement can either Disengage Automatic Control Mode or Momentarily Disengage control until the joystick returns to centre.

2.2 | Supported Implement Types
COMMAND machine profiles are used to store all configuration settings for that particular implement including GNSS input selections, valve configuration, calibration and tuning values etc.
Implemented and Tested Machine Profiles
COMMAND currently has the following machine profiles available for selection on the ECU:
Machine Profile
Controlled Functions
Example Usage
Single Scraper - Height
Function 1 - Height
A bucket scraper with single proportional height control valve and a single GNSS receiver
Single Scraper - Height & XSlope
Function 1 - Height
Function 2 - XSlope / Tilt
A bucket scraper with a single proportional height and single proportional tilt control valve fitted with a single GNSS receiver and single inertial measurement unit (IMU)
Single Ditcher - Height
Function 1 - Height
A V-ditcher with a single proportional height control valve and a single GNSS receiver.
Machine Profiles Currently In Testing
Machine profiles listed below are currently under development and may become available in future software releases.
Machine Profile
Controlled Functions
Example Usage
Single Ditcher - Height & Pitch
Function 1 - Height
Function 2 - Pitch
A tile plow with a single proportional height, single proportional pitch control valve, single GNSS receiver and single inertial measurement unit (IMU).
 
Tandem Scrapers - Height
Function 1 - Height 1
Function 2 - Height 2
 
Two bucket scrapers in tandem, each with a single proportional height control valve and single GNSS receiver.
Single Scraper - Dual Height
Function 1 - Height
A bucket scraper with a single proportional height control valve but two GNSS receivers (One on the  left of the implement, one on the right)
Single Scraper - Height (Dual Cylinder)
Function 1 - Height Left
Function 2 - Height Right
A bucket scraper with dual proportional height control valves (controlling left and right height separately), and two GNSS receivers (left and right). Maintains blade angle to allow manual X-Slope / Tilt operation.
Single Scraper - Height & XSlope (Dual Cylinder)
Function 1 - Height Left
Function 2 - Height Right
A bucket scraper with dual proportional height control valves (controlling left and right height separately), and two GNSS receivers (left and right). 

2.3 | GNSS Receiver & IMU Compatibility
The requirements below outline the important components and considerations for using a GNSS receiver with COMMAND.
StarFire RTK, NMEA 0183 Fixed RTK over RS232 serial, or NMEA 2000 Fixed RTK output over ISOBUS/CANBUS.
Suitable adapters are available to connect RS232 or CANBUS and 12V external power to the COMMAND harnessing system. 
Ruggedised and suitable for earthmoving machine control applications.
Receivers being used with COMMAND must be capable of RTK positioning calculations. 
NMEA 2000 (CANBUS)
COMMAND is able to interface with GNSS receivers supporting NMEA 2000 standard output over ISOBUS/CANBUS for position feedback including but not limited to Case Vector Pro, New Holland PLM Cygnus & Trimble NAV 900/960 receivers.
Supported NMEA 2000 PGNs
129029 - GNSS Position Data
129539 - GNSS DOPs
129025 - Position, Rapid Update
129026 - COG & SOG, Rapid Update
129028 - Altitude Delta, Rapid Update
Position Update Rate 
A minimum position update rate of 5 Hz is required. 10 Hz is recommended.
NMEA 0183 (RS232 Serial)
COMMAND is able to interface with any receiver capable of providing NMEA 0183 standard sentences over RS232 serial for position feedback. The sentences below are required at a minimum for usage with COMMAND. 
Required Sentences
GGA -  Time, position, and fix related data
GSA -  GNSS DOP and active satellites
VTG - Actual track made good and speed over ground
Optional Sentences
RMC - Position, Velocity, and Time
ZDA - UTC day, month, and year, and local time zone offset
Position Update Rate 
A minimum message rate of 5 Hz is required. 10 Hz is recommended. 
RS232 Baud Rate
The RS232 baud rate can be selected in COMMAND as 19200, 38400, 57600, and 115200 bps. A baud rate of 38400 is recommended.
John Deere StarFireTM
COMMAND is able to interface with all modern StarFire receivers over ISOBUS/CANBUS for position feedback, including StarFire 3000, 6000, 7000 & 7500 models.
Differential GNSS or SF corrected signals e.g. SF3 are NOT considered suitable for implement position feedback as position accuracy and repeatability are insufficient.
Compatible Cross-slope / Roll / Tilt Sensors
For users making use of Cross-slope control using the COMMAND ECU's second output function, we recommend the use of the T3H-E003 COMMAND Inclination Sensor – TARS-B to ensure that the angle sensor being used is robust and accurate for automatic implement control.
T3H-E003 - COMMAND Inclination Sensor
A TARS-B inertial measurement unit configured by T3RRA can be used to provide reliable feedback on the pitch and roll angle of the implement and can be mounted on the scraper for automatic Cross-slope control when using receivers such as Case IH Vector Pro or Trimble NAV 900.
StarFireTM TCM (Terrain Compensation Module)
COMMAND can make use of the in-built StarFire TCM, which provides feedback on pitch and roll angle of the receiver. The StarFire TCM can be selected as a Cross-slope / Tilt sensor but we cannot guarantee the accuracy / bias drift of the sensor and generally recommend the use of T3H-E003 shown above.

2.4 | Tractor / Electrohydraulic Compatibility
COMMAND can make use of either in-built rear tractor electrohydraulic valves, commonly referred to as SCVs (Selectable Control Valves) or auxiliary remotes, or externally mounted electrohydraulic valves.
For each valve type, COMMAND is able to provide two raise and lower functions for automatic control of function 1 (e.g. height) and function 2 (e.g. cross-slope / tilt). For CANBUS based valve types, any available SCVs/Remotes will be available for selection.
For proportional solenoid, Analog Voltage (0-5V) and Danfoss PVE types, the number of selectable outputs is limited to the number of available physical outputs on the ECU suitable for analog voltage laser inputs or external EH valves.
Valve Interface
Description
Applicable Valve Adapter/s
Suitable example tractors/valves
JD CAN
COMMAND can communicate directly with John Deere SCVs over CANBUS, sending flow requests that will be enacted by the John Deere tractor hydraulic system.
N/A
Most modern John Deere tractors, e.g. 8R, 8RT, 9R, 9RT, 9RX.
J1939
COMMAND can communicate directly with the T3RRA VM or other compatible hydraulic controllers using the J1939 messaging standard.
N/A
Challenger tracked machines
Fendt SCR/S4/MT
COMMAND can communicate directly with Fendt SCVs over CANBUS, sending flow requests that will be enacted by the tractor hydraulic system. 
Use T3H-V005 and S/111 valve adapters.
Fendt SCR, S4 and MT models where the SCV control bus is separated from the ISOBUS.
Fendt ONE
COMMAND can communicate directly with Fendt SCVs over CANBUS, sending flow requests that will be enacted by the tractor hydraulic system. 
Use T3H-V005 valve adapter.
Fendt Gen 7 / ONE tractor models
Analog Voltage (0-5V)
COMMAND can provide 0-5V analog voltage signals suitable for John Deere legacy proportional SCV controller or Case IH / New Holland 0-5V EHR controller inputs. 
Use T3H-V001 valve adapter.
Case 0-5V EHR inputs or John Deere legacy proportional laser inputs.
Proportional Solenoid
COMMAND can provide closed-loop PWM signals suitable for controlling external proportional solenoid valves requiring maximum flow current of less than 2 Amps.
Use T3H-V002 and T3H-V003 valve adapters.
Scraper systems using external proportional solenoid valves such as Eaton Vickers, Rexroth or Hydac.
Danfoss PVE
COMMAND can provide 0-Vs ratiometric voltage signals as well as power supply suitable for controlling external Danfoss PVEM, PVEA, PVEH and PVES valves. 
Use T3H-V002 and
one of T3H-V006 or T3H-V007 valve adapters.
Scraper systems using external closed-loop proportional valves such as Danfoss PVEM, PVEA, PVEH or PVES.

2.5 | Selecting System Components
Correct component selection is important for reliable installation and operation of the COMMAND system. Harnessing requirements will vary depending on tractor model, implement configuration, GNSS receiver type, and hydraulic interface. For assistance selecting compatible components, use the COMMAND kit picker at t3rra.com or contact T3RRA.
Factors that will affect harnessing requirements include:
Tractor brand
Tractor model
Scraper brand
Scraper model
GNSS receiver model
Available Electrohydraulic Valves
Harnessing Compatibility
The COMMAND harnessing system has been designed to allow us to leverage existing customer and dealer knowledge of tractor and implement harnessing systems. We can then take advantage of this familiarity on the technical support front, while leveraging the fact that dealers also possess many of these parts in stock at-the-ready.
Typical CNH Components
SKU / Part No.
Name
115-0172-397 OR 115-0172-398 
OPTIONAL POWER
Constant Power Harness (Row Crop) OR Constant Power Harness (Articulated)
115-7100-009 OR 115-7100-010
REQUIRED
Front Extension Wiring Harness Kit
115-7100-005
REQUIRED
Cable Adapter Terminator Gen I ISOBUS
92179218 OR 92317566 
REQUIRED IF NO ISO IBBC PRESENT
Row Crop Tractor ISO Connector OR Articulated Tractor ISO Connector
Typical John Deere Components
SKU / Part No.
Name
BPF10403 OR BPF10404 
OPTIONAL
Constant Power Harness (Row Crop) OR Constant Power Harness (Articulated)
BPF11117
REQUIRED
Front Extension Wiring Harness Kit (including terminator module)
RE174725 OR RE174726 
REQUIRED IF NO ISOBUS PRESENT
GreenStar™ Ready Field Installation Kit (Rowcrop) OR
GreenStar™ ISO Implement Connector Field Installation Kit (Articulated)
BPF12658
REQUIRED IF USING STARFIRE GNSS
Implement Receiver Wiring Harness Kit
BPF10547
RECOMMENDED
iGrade Counterbalance Valve kit -  highly recommended if the implement has no existing counterbalance mechanism
Base COMMAND Components
The components below are required for a base COMMAND installation.
SKU / Part No.
Name
T3H-E001
COMMAND ECU – Controller Only
T3H-L001
COMMAND ECU Licence – Licence Only
T3H-C002-1
COMMAND ECU Adapter - CAN & Analog V2
T3H-C003
COMMAND Arm/Engage Switch Adapter
T3H-C004
COMMAND Arm/Engage Switch
T3H-C005
COMMAND ISOBUS/Ext Breakout Adapter 
T3H-C006
COMMAND Cab Breakout Adapter
T3H-C008
COMMAND Cab/Ext Extension Adapter
T3H-T001
Tablet Serial Interface Adapter (RA 4m)
Optional COMMAND Components
Components listed below are optional for COMMAND and will only be required for certain tractor models, scraper models, GNSS receivers, Tilt sensors or Electrohydraulic valves.
SKU / Part No.
Name
Tractor Harnessing
 
T3H-F001
Cab Convenience Power Adapter 
T3H-F002
External Loose End Power Adapter
T3H-F003
COMMAND Inline Fuse Adapter 
T3H-J001
COMMAND Joystick Adapter – 4m Extension
T3H-M001
COMMAND J1939 Diagnostic Adapter (Green)
T3H-T002
Tablet Serial Interface Adapter (RA 6m)
T3H-V001
COMMAND Legacy Analog Output Adapter
T3H-V002
Valve Adapter – 6m Extension
T3H-V003
Valve Adapter – Prop. Solenoid (2-way DT)
T3H-V005
COMMAND Tractor CAN Valve Adapter
Implement Harnessing
 
T3H-E003
COMMAND Inclination Sensor – TARS-B
T3H-G001
COMMAND NMEA Extension Harness (8m)
T3H-G002
COMMAND Impl Adapter – NAV-900 / Ag372
T3H-G003
COMMAND Impl Adapter – Emlid Reach RS2/RS2+/RS3
T3H-G004
COMMAND Trimble NMEA Output Adapter
T3H-G007
COMMAND NMEA Extension Harness (12m)
T3H-S001
COMMAND Impl Adapter – Stub Junction
T3H-S003
COMMAND Impl Adapter - TARS Extension

3 | COMMAND Installation
3 | Installation Overview
The COMMAND system is to be installed in a structured sequence to ensure correct operation and to minimise installation issues.
Follow the steps below in order. Do not skip steps or complete them out of sequence.
Installation Steps
Complete Pre-Installation Requirements
Confirm that the tractor, power supply, and components meet system requirements.
Install the ECU
Select a suitable mounting location and securely install the COMMAND ECU.
Install Cab Components
Install operator interface components including the arm/engage switch, joystick, and tablet.
Connect Hydraulic Interfaces
Connect the system to the tractor’s electrohydraulic valves or external valve interfaces.
Install and Configure GNSS and IMU
Connect and configure the GNSS receiver and IMU as required.
Configure Display and Communication
Set up NMEA output and ensure communication between system components is functioning correctly.
Verify System Operation
Perform system checks to confirm correct installation and functionality before operation.

3.1 | Pre-Installation Tractor Requirements
All requirements in this section must be confirmed before installing the COMMAND system. 
Failure to meet these requirements may result in improper operation or system damage.
Confirm the following before proceeding:
Tractor compatibility
Power supply suitability
Communication interfaces (ISOBUS or CANBUS, RS232 NMEA 0183)
Details for each requirement are provided in the following sections.
Tractor Requirements
COMMAND's tractor requirements are as follows:
Provide a suitable power supply as specified in Section 4.3.
Have compatible SCVs or auxiliary control valves
The tractor does not need to be ISOBUS-equipped; however, upgrading to ISOBUS is strongly recommended to provide the necessary connections (e.g. implement breakaway connector).
Be capable of manual implement control.
Be in good working condition with fully functional hydraulics.
If any requirement in this section cannot be met, installation should not proceed.
Implement Compatibility
Supported Implement Configurations
COMMAND is currently suitable for use with the following types of implements:
Implements with a single hydraulic height control function and a single receiver, i.e. requiring a single valve. This includes implements with multiple height cylinders if the cylinders are linked together and controlled by the same valve. e.g. a basic tractor-pulled bucket scraper.
Implements with a single hydraulic height control function, single receiver, and a single cross-slope/tilt control function, i.e. requiring a single separate valve for each (2 total). e.g. JN&R tractor-pulled scraper with cross-slope / tilt cylinder.
Future Configurations
Implements with a single hydraulic height control function and dual receivers, i.e. requiring a single valve for height control and a single valve for cross-slope control with both a left and right implement mounted receiver.
Tandem implements (convoy) each with a single hydraulic height control function, i.e. one valve controls front scraper height and another valve controls rear scraper height.
Implements with two separate hydraulic height control functions, i.e. two separate valves are required to control each side of the implement. e.g. grader-style blades with independent left/right control.
Two implements towed in tandem with a single height control function each, i.e. requiring one valve for each implement. e.g. two basic bucket scrapers towed in tandem.
Implement Definitions
The naming conventions below will help to avoid confusion later:
Single implement - One single blade with one receiver positioned in centre (single-axis or dual-axis) (May or may not be accompanied by IMU).
Tandem implements - Two blades in front/behind one another as a train, each with a single receiver positioned in the centre (single-axis control only).
Dual receiver - One single blade with two receivers positioned on the left and right sides of the blade for dual-axis control. The tilting point is assumed to be the centre of the blade edge, in the middle of the two receivers.

3.2 | Pre-Installation Power Requirements
A switched 12V DC power supply with a minimum capacity of 10A is required.
The harnessing system has been designed to provide flexibility in sourcing 12V DC switched power depending on where the ECU is mounted, and where sources of protected 12V DC power are freely available. 
The following power supply options are supported:
Cab Convenience Sockets
COMMAND can be powered using an available cab convenience power socket along with the T3H-F001 Power Adaptor provided by T3RRA.
NOTE: A minimum of two cab convenience sockets are required in total if providing power to COMMAND and implement harnessing, and a RuggON tablet. Three are required if adding an ISOBUS breakaway connector that requires a convenience power connection e.g. JD ISOBUS plug kit.
If fewer than two convenience ports are available, another power option may need to be used for COMMAND or the tablet.
WARNING: Convenience power supply sockets should be load-dump protected and fused appropriately within tractor electrical systems, and generally are but it's always best to make sure.
Using a Constant Power Harness 
The Constant Power Harness (CNH 115-0172-397/8 OR JD BPF10403/4) can be connected to the COMMAND harnessing system at connector C6 on the T3H-C005 exterior breakout harness.
NOTE: The Constant Power Harness may not possess its own fusing, but a fuse is supplied on the T3H-C005 harness to protect against electrical faults.
Connection can also be made directly into the T3H-C002 EXT branch (Connector C6) if the T3H-C005 is not required but the aforementioned fuse must still be added for appropriate protection using a T3H-F003 Inline Fuse Adapter.
Providing a Custom Power Connection
A custom connection to switched 12V power can be made using the T3H-F002 Power Adaptor (DT06-2S & Loose Wire Ends). The installing technician must provide the appropriate connections / terminations depending on their own requirements. 
NOTE: Avoid routing power cables near high-current or noisy signals if possible (e.g. alternator).
WARNING: The power supply must be rated and protected appropriately for the application!
Custom Power Supply Requirements
If a custom power source is used, it must meet the following requirements:
Description
Nominal Range / Rating
Notes
Supply Voltage (V)
9-32V DC
Ripple/noise ≤ 100 mV peak-to-peak recommended; ensure DC/DC converters are well-filtered.
Supply Current (A)
1A for general ECU operation
plus 2A per proportional solenoid in use
Depends on connected loads, MCU, sensors, and interfaces.
Power Supply Protections
Overvoltage protection
 
 
 
Must be protected against load dump, inductive spikes, and cranking via TVS diodes or suppression circuits.
 
Transient protection required (TVS diode, suppressor per ISO 7637-2).
Overcurrent protection
Must include a fuse or circuit breaker rated to a maximum of 10A.

3.3 | Pre-Installation ISOBUS Requirements
COMMAND does not explicitly require the tractor to be fitted with an ISOBUS system to operate; however, we strongly recommend taking the opportunity to upgrade any tractor to be used with COMMAND to be ISOBUS capable as well, thereby future proofing for other future devices at the same time. ISOBUS / CANBUS harnessing may also be mandatory depending on choice of GNSS receiver.
ISOBUS / CANBUS GNSS Data
COMMAND may make use of the ISOBUS to read GNSS data of NMEA 2000 or StarFire message formats, which will be present and readily available to the COMMAND ECU if both the ECU and the GNSS receiver are connected to the ISOBUS.
ISOBUS Auxiliary Valve Control
COMMAND may also make use of the tractor ISOBUS when performing control of the electrohydraulic valves. Messages are sent to a tractor hydraulic controller over the ISOBUS in some configurations. Usually, if the tractor's hydraulic controller is capable of control via external messages, the machine will already have ISOBUS harnessing and functionality.
ISOBUS Overview
ISOBUS is a standardised CANBUS communication protocol that enables communication between tractors, implements, and control systems. This system simplifies operations, reduces clutter, and improves efficiency by allowing operators to control multiple implements from a single interface.
A typical ISOBUS setup will often include an ISOBUS terminal display along with various different ISOBUS harnesses that set up the standardised harnessing and messaging framework on the machine. Other types of ISOBUS compatible devices can then be added for all kind of functionality including auto-steering, automated land levelling, automated planting/seeding/spreading/spraying and more.
Next Step
If all requirements in this section have been met, proceed to Section 5 | ECU Installation & Mounting.

3.4 | Electronic Control Unit (ECU) Installation
IMPORTANT: Please ensure you have read the safety information in the previous chapter before commencing installation of COMMAND.
Machine Preparation
Complete the following steps before beginning installation of the COMMAND ECU:
 
Step
Check
Move the tractor and implement to a level, hard surface suitable for maintenance work.
 
Center the steering wheels. For articulated tractors, engage the articulation locks to prevent movement.
 
Fully lower any attachments or implements to the ground to ensure stability.
 
Turn off the engine and remove the ignition key.
 
Block both the front and rear wheels to prevent accidental movement of the machine during installation.
 
Allow the engine and hydraulic system to cool completely before working near hot components.
 
Disconnect the battery cables. Place a “Do Not Operate” tag in a visible location in the cab, and install a lockout box on the battery terminal to prevent accidental power reconnection.
 
Before opening any hydraulic, pneumatic, or coolant lines, relieve system pressure. Use caution when removing fill caps or hose fittings—cover the area with a clean rag to contain any residual pressure or fluid spray.
 
Unbox all kit components and verify the contents against the packing list. Lay out the parts on a clean, organized work surface to streamline installation.
 
 
ECU Mounting Overview
The COMMAND ECU can be installed in one of three locations depending on the tractor and application:
1. In-cab (preferred)
2. Behind rear cab panel
3. Rear of tractor near ISOBUS connection
The selected mounting location will determine harness routing and connection layout. Please follow the relevant installation instructions based on the selected mounting location.
Connections Overview
Mounting Locations
Select the mounting location based on available space, environmental exposure, and ease of harness routing.
In-Cab (Preferred)
Mounting in the cab of the tractor is the preferred option, as it best protects the ECU and harnessing from the elements. Mounting the ECU in-cab is best suited to tractors with paneling, compartments or normally covered cab walls with enough room to mount the ECU.
Being mounted in cab will provide access to the following for the T3H-C002 ECU breakout harness:
Power via convenience plug or power strip
Arm/Engage Switch
Tablet
4-way ISOBUS connection if present in cab harnessing
Diagnostic ports for tractor CAN access
Joystick
Valve output connections to Case EHR inputs or JD legacy proportional inputs
Cabling will need to be run outside of the cab if:
Proportional solenoid or Danfoss PVE valve cabling must be run out to an external valve block
The photos above show some suitable mounting locations found in older Case tractor models, where an ECU can either be magnet mounted or Rivnut mounted depending on preference.
Rear Panel Mounting
In situations where the cab doesn't have enough suitable space for mounting the ECU and neatening the harnessing, the ECU can be mounted at the back of the tractor behind rear paneling if enough space is available.
The ECU should be mounted with enough space for connection and disconnection of the breakout harness, which will also require some space itself when tying up and neatening the T3H-C002 harness.
The ECU can be mounted in much the same way as in-cab - see following pages for information on ECU dimensions and mounting methods.
Rear Breakaway Mounting
If there isn't enough space present in the cab or behind the rear paneling of the cab, then there is generally plenty of space to be able to mount the controller at the rear of the tractor near or next to the ISOBUS implement breakaway connector.
If mounting here, magnets are not recommended as there is a lot of potential for dirt and rocks to knock the ECU. Custom bracketing is recommended when installing the controller at the rear of the tractor to help shield the ECU from dirt and rocks, and to also provide a reliably secure mounting connection through the use of bolts and nylon-lock nuts.
Mounting Methods
Magnets
Mounting with strong neodymium magnets can provide a quick and robust method of mounting the COMMAND ECU. 
Neodymium magnets with a countersunk centre hole of 7mm diameter along with 7mm fasteners should be used.
Rivnuts
Mounting with Rivnuts is another effective way of securing the ECU to the inner or outer wall of the tractor. 
Care should be taken to drill an appropriately sized hole of the Rivnut, then use the expansion tool and fasten the ECU securely. 
Dimensions Drawing
Mounting orientation
The ECU must be mounted with electrical connectors facing downward to prevent moisture and dirt ingress. Do not mount the ECU with the connectors facing upward or to the side as moisture or dirt may accumulate and cause corrosion and/or connection issues.
Connecting the ECU Breakout Harness 
Once the ECU is mounted securely in place:
Connect the T3H-C002 to the ECU with the black and beige paired ECU plugs shown below.
Push each plug in until a click is felt.
Gently pull on the plug to ensure that it has mated correctly.
To unplug the ECU connection later, press down on the tab at the top of the connectors (facing toward you with the ECU mounted in the direction specified above) and pull the plug downward away from the ECU.
Once the T3H-C002 ECU breakout harness has been connected to the ECU, connections to the external and cab breakout harnesses need to be made. The T3H-C005 exterior breakout harness is designed to be positioned at the rear of the tractor, while the T3H-C006 cab breakout harness is designed to be positioned inside the tractor cab.
T3H-C002 - ECU Breakout Harness
T3H-C005 - Exterior Breakout Harness
T3H-C006 - Cab Breakout Harness
Connecting the Exterior and Cab Breakout Harnesses
The T3H-C002 breakout harness provides 2m branches for cab and exterior breakout connections. Use T3H-C008 extension harness if additional length is required (up to 6m total).
Cab-Mounted ECU
Avoid routing the cabling out of the cab through windows/doors if possible as these may pinch and damage the wires in the harness.
If the COMMAND ECU has been mounted inside the tractor cab, then the exterior branch will need to be routed outside of the cab through a hole/cable gland to the rear of the tractor next to the ISOBUS implement breakaway connector.
Connect the 12-pin and 2-pin connectors on the T3H-C005 exterior breakout to the T3H-C002 ECU breakout connectors, extended with T3H-C008 if necessary and run the cable out of the cab and to the rear of the tractor.
Once the exterior breakout has been connected and routed, connect the T3H-C006 cab breakout harness to the CAB 12-pin AMPSEAL and 2-pin Deutsch DT connectors on the T3H-C002 ECU breakout inside the cab.
An extension should not be needed for the cab breakout harness, and the cab breakout harness should be positioned somewhere out of the way behind covers wherever space is available.
Exterior-Mounted ECU
Avoid routing the cabling into the cab through windows/doors if possible as these may pinch and damage the wires in the harness.
If the COMMAND ECU has been mounted outside the tractor cab, then the cab branch will need to be routed inside of the cab through a hole/cable gland from the rear of the tractor where the ECU is mounted.
Connect the 12-pin and 2-pin connectors on the T3H-C006 cab breakout to the T3H-C002 ECU breakout connectors and route to the cab, extended with T3H-C008 if necessary.
Once the cab breakout has been connected and routed, connect the T3H-C005 exterior breakout to the EXT 12-pin AMPSEAL and 2-pin Deutsch DT connectors at the rear of the tractor.
An extension should not be needed for the exterior breakout harness, and the exterior breakout harness should be positioned somewhere that doesn't block access to other components at the rear of the tractor.

3.5 | Powering COMMAND
Select the appropriate power supply method based on ECU mounting location.
Cab-Mounted ECU
COMMAND can be powered using an available cab convenience power socket along with the T3H-F001 Power Adaptor provided by T3RRA. When mounted in-cab this is the preferred option. If no convenience power outlets are available, consider using a  adapter instead of T3H-F001 if power strip connections are available.
 
Convenience Power and Power Strip Outlets
 
 
 
T3H-F001
 
 
T3H-C002 / T3H-C006 2-pin Power Input
Rear-Panel / ISOBUS Mounted ECU
If the COMMAND ECU is mounted under the rear panel of the tractor, we recommend powering using a Constant Power Harness kit (CNH 115-0172-397/8 OR JD BPF10403/4).
Alternative Power Connection
Alternatively, connecting to any available switched power studs underneath the cab, making sure to use a T3H-F003 inline fuse adapter and creating a 2-core cable of appropriate length.
Do NOT connect unswitched/battery power to COMMAND's power input as this will drain battery while the tractor is switched off.

3.6 | Connecting COMMAND to the ISOBUS
ECU Mounted In-cab
With the COMMAND ECU mounted in-cab:
Locate the in-cab 4-way ISOBUS connector.
Connect the 4-way ISOBUS connection on the T3H-C006 cab breakout to the connector.
Use an additional adapter if connecting to 9-way cab ISO receptacle.
ECU Mounted at Rear of Tractor
With the COMMAND ECU mounted at the rear panel or near the ISOBUS breakaway plug:
Disconnect the existing 4-way plug from the ISOBUS implement breakaway connector.
Connect the disconnected plug to the receptacle on the ISOBUS "T" connection on the T3H-C005 external breakout.
Connect the 4-way ISOBUS "T" plug into the ISOBUS implement breakaway connector.

3.7 | Arm/Engage Switch Installation
The COMMAND Arm/Engage Switch is used by the operator to both Arm/Disarm ECU control outputs, and also to Engage/Disengage automatic control mode. 
Mounting Location
The Arm/Engage Switch should be mounted close to the operator's typical hand resting around the armrest for easy access to Engage or Disengage COMMAND's automatic control mode.
Ideally there may be a spare switch position in the armrest as shown below, but if this is not the case then a suitable bracket or enclosure will need to be added to the side of the armrest for example, to provide somewhere for the switch to be mounted.
Installation Steps
Mount the switch near the operator’s armrest for easy access.
Install the switch into an available switch cavity or bracket.
Connect the T3H-C003 adapter to the T3H-C004 switch.
Insert the adapter into the mounting location and pull through until the switch is close to the panel.
Insert the switch into the mounting location and ensure it is seated correctly.
Connect the T3H-C003 adapter to the T3H-C006 cab breakout harness.
Functionality (Operation)
The switch has a configuration of OFF-ON-(ON). While in the OFF position, the ECU is disarmed and will not activate outputs or send hydraulic flow commands. The OFF position LED indicates that the ECU is powered.
When moved to the middle ON position, COMMAND is Armed and prepared for sending output signals or hydraulic flow commands. If using a joystick, COMMAND must be armed before the ECU will move the hydraulics.
Once in the middle ON position, the operator can then momentarily push into the third (ON) position, which toggles automatic control mode on or off. Please note that automatic control will only Engage once appropriate conditions are met. The idea here, is that once armed the operator may press the momentary button as needed to Engage or Disengage automatic control depending on their requirements.
IMPORTANT: In the event of an emergency, the operator should switch the Arm/Engage switch to the OFF position to completely disable movement of hydraulics. Please also note that Disarming COMMAND will also disable joystick functionality.

3.8 | RuggON Tablet Installation
This section covers installation of a typical RuggON tablet supplied by T3RRA, but these instructions are also relevant to those opting to use their own tablet PC.
Tablet Mounting Options
The tablet must be mounted somewhere in the cab where the operator can maintain good visibility of the screen.
Ensure the tablet does not obstruct operator visibility while driving.
Installation of the tablet for T3RRA Software is carried out in the same fashion as for any other T3RRA software installation. We highly recommend the RuggON PX501 or SOL7 as a tablet computer solution for use with T3RRA Software and provide various accessories for mounting them in the T3RRA Shop.
Mounting the Tablet
Fasten the square silver tablet VESA plate to the square black RAM arm VESA plate.
Using a suitable RAM mount or adapter bracket, create a mounting point for the swivelling RAM arm and fasten it to the tractor cab.
Position the VESA plate appropriately so that the tablet can be slotted into and removed from the mount easily when required.
Fasten the larger silver tablet plate to the back of the PX501 using the provided screws.
The tablet is now ready to be slotted into the VESA plate on the black RAM arm and repositioned to the correct viewing angle.
The tablet is now ready for connection to COMMAND.
Connecting the Tablet to COMMAND
Using a T3H-T001 or T3H-T002 cable, connect the 12-way AMPSEAL connector to the matching red and black AMPSEAL connector on the T3H-C002 ECU breakout harness.
Run the serial cable along the tractor cab wall neatly and fasten to any available points using zip or twist ties.
Connect the silver DB9 right angled (RA) or straight connection to the tablet and then secure the connector screws using a small screwdriver.
Bundle and tie up any extra length of cable somewhere out of the way.

3.9 | Joystick Connection (Optional)
Overview
In most cases the manual control of hydraulic functions are already available (e.g. when using existing tractor auxiliary valves). In some limited cases it may be necessary to add operator control for hydraulic functions, e.g. when using an additional valve module, or using direct PWM operation of hydraulic valves from the COMMAND ECU. In these situations, two options are available: An analog joystick, or a J1939 CANBUS joystick.
If using a compatible analog or J1939 CANBUS joystick, this can be connected to the T3H-C002 directly or via a joystick extension harness.
Ensure the joystick is fitted with an 8-way Deutsch DT plug (DT06-8S).
Mount the joystick in an appropriate location in-cab according to manufacturer mounting instructions.
Connect the plug to the connector labelled “Joystick” on the T3H-C002 harness.
Verify correct pin alignment before connecting.
See below for the pin positions and connector information noting that this is the receptacle on the T3H-C002 ECU breakout harness.
Mating joystick connector parts:
Connector: DT06-8S / DT06-8SA
Contacts: 1062-16-0122 or AT62-16-0122
Analog Joystick Installation
Analog joysticks from brands such as APEM, Parker, Suregrip Controls or Danfoss can be connected to the system and used to manually control one or both available functions, e.g. Height and X-Slope.
Analog Joystick Specification Requirements
Expected output range:  1.0 - 4.0V
Expected resting voltage:  2.5V
Analog Joystick Connection
The T3H-C002 ECU Breakout Harness has an 8-pin joystick connection available that can be used to provide switched 12V power and access to the analog joystick signal inputs. Generally, Joystick Axis 1 and Joystick Axis 2 should be connected to the Y and X axis of the joystick respectively. 
1. Connect joystick to the 8-pin joystick connector on the T3H-C002 harness.
2. Connect power to Switched 12V and GND.
3. Connect signal outputs to joystick axis inputs.
4. Verify voltage range is within 1.0–4.0V.
NOTE: The Joystick Axis 3 signal is currently not in use - COMMAND is currently capable of controlling 2 functions for manual control.
Analog Voltage Signal Requirements
The joystick output voltage must be centred at 2.5V when not being manipulated, and should lower in voltage to a minimum of 1V in one direction, and to a maximum of 4V when moved in the opposite direction.
IMPORTANT: 0-5V Output range joysticks cannot be used with COMMAND, as input voltages of 0V and 5V are assumed to be a short circuit to ground or 5V respectively. 
J1939 / CANBUS Joystick Installation
A ruggedised multifunction J1939 CANBUS joystick with suitable output messages can be connected to the joystick connection on COMMAND harnessing to provide manual operator control of the scraper.
A J1939 joystick such as the APEM HF Series J1939 joysticks can be connected to the system and used to manually control the two available functions, e.g. Height and X-Slope.
Interface Parameters
Baud rate: 250 kbps
Transmission repetition rate: Recommended 10 hz or higher
Connection
The joystick connector on COMMAND harnessing can provide a 12V DC supply for the joystick, and then receive joystick position messages back via CANBUS. The COMMAND ECU has been programmed with J1939/ISO basic joystick message types to provide selection between fore/aft, left/right and twist axes for each of COMMAND's control functions. See below for pinout information.
1. Connect joystick power to Switched 12V and GND.
2. Connect CAN HI and CAN LO to ISOBUS HI and LO.
3. Verify communication at 250 kbps.
4. Confirm joystick inputs are detected in Level COMMAND.
Expected Message Protocol
Message 1 - BJM1 - PGN 0xFDD6
Primary X-axis or Y-axis can be assigned to COMMAND function 1 or function 2.
Message 2 - EJM1 - PGN 0xFDD7
Primary Z-axis or Y-axis can be assigned to COMMAND function 1 or function 2.
For more assistance in setting the selected joystick type and joystick axes within Level COMMAND, please refer to the Level COMMAND manual.

3.10 | Tractor Valve Set-up -John Deere
Modern John Deere (CANBUS)
Applicable to:
John Deere tractors with CANBUS-based SCV control (typically 2005+ models).
Connection Method
John Deere CANBUS-based SCV systems are controlled by COMMAND directly over the ISOBUS, so the only hardware requirement for direct control is that COMMAND be connected to the tractor ISOBUS via the 4-way Deutsch DT connections on either the cab (T3H-C006) or external (T3H-C005) breakout harnesses.
Installation Steps
1. Connect COMMAND to the ISOBUS using either:
   - T3H-C006 (in-cab), or
   - T3H-C005 (rear ISOBUS)
2. Ensure a secure connection at the 4-way Deutsch connector.
3. Power on the system and verify ISOBUS communication.
(See Section 5.4)
Operation Notes
COMMAND interfaces with modern John Deere tractors by sending CANBUS messages to the integrated valve controller, commanding either port A or port B flow of the rear tractor SCVs.
To operate the SCVs in automatic control mode, the user must push the respective SCV lever into the detent position (not float). This will cause "AUTO" to appear on the console/display to indicate that the SCV is ready for automatic control commands.
Moving the lever will disengage AUTO mode on the console/armrest but "AUTO" may remain visible in the SCV status area as it's still in automatic control mode. To re-enter AUTO mode, push the SCV lever into detent position again.
IMPORTANT: Moving the SCV lever will disengage AUTO mode in modern JD tractors, so movements based on any current valve signals will cease. Always keep this in mind during operation - the lever must be pushed into detent position again to resume automatic control.
John Deere Legacy (Analog)
Applicable to:
John Deere tractors with analog SCV control (typically pre-2005 models).
Connection Method
COMMAND can control John Deere legacy valve systems through the use of a T3H-V001 COMMAND Legacy Output Adapter.
Installation Steps
10-way Metripack 150 Series Connection
Connect the T3H-V001 adapter to the T3H-C002 ECU breakout harness at the round Deutsch HD series connector. 
2. Connect the 10-way Metripack connector on T3H-V001 to the tractor's SCV signal input plug.
John Deere SCV Controller Connection Overview
Operation Notes
COMMAND interfaces with legacy John Deere tractor SCVs by sending analog voltage signals to the integrated valve controller, commanding either port A or port B flow of two of the rear tractor SCVs (generally SCV1 and SCV3).
To operate the SCVs in automatic control mode, the user must push the respective SCV lever forward into the detent position. This will cause "AUTO" to appear on the console/display to indicate that the SCV is ready for automatic control commands.
Moving the lever will disengage AUTO mode on the console/armrest. To re-enter AUTO mode, push the SCV lever into detent position again.
IMPORTANT: Moving the SCV lever will disengage AUTO mode in modern JD tractors, so movements based on any current valve signals will cease. Always keep this in mind during operation - the lever must be pushed into detent position again to resume automatic control.

3.11 | Tractor Valve Set-up - CNH
CNH Direct Connect (AFS Connect / PLM Intelligence)
Applicable to:
Case IH / New Holland tractors with AFS Connect or PLM Intelligence systems.
Connection Method
COMMAND can control Case & New Holland rear tractor valve (EHR) systems through the use of a T3H-V001 COMMAND Legacy Output Adapter.
Installation Steps
The Case / New Holland tractor connection for analog control signal inputs via the T3H-V001 adapter are generally found in one of three locations depending on tractor model:
1. Locate the tractor SCV signal input connector:
   - Fuse compartment
   - Behind driver seat
   - Under cab exterior (4WD models)
2.  Connect the T3H-V001 adapter to the tractor connection.
3. Connect the T3H-V001 adapter to the T3H-C002 harness.
Tractor Valve Configuration
1. After completing the physical connection, the system must be configured on the tractor armrest display.
2. Ensure that a new implement profile has been created for use with the scraper, or that the currently selected profile is
appropriate.
3. Open the “Remotes” settings tab to display remote valve configuration.
4. Set the desired remote valve outputs at the back of the tractor to the desired function (A or B).
NOTE: The remote valves selected for A and B should be matched to the valve connections at the back of the tractor pictured
below. We recommend setting auxiliary valve A to remote valve “Rear 1”, and setting auxiliary valve B to remote valve “Rear 2”,
which will configure remote valves 1 and 2 at the back of the tractor for use with COMMAND.
5. Once the remote valves on the tractor have been set to the desired auxiliary function, the machine should now be fully configured and ready for use. In order to engage auxiliary control, the user must ensure that the Auto Auxiliary Control Valves A & B have been turned on in the relevant area on the “Remotes” page.
6. The “Auto Auxiliary Control Valve” can be accessed either by the hydraulic cylinder shortcut next to the display navigation dial on the armrest, or by adding the menu to the display home page. Once this menu is accessed, turn either or both required function to the on position and briefly push the selected remote valve lever forward until it clicks, then release it. The lever returns to its resting position.
Operation Notes
COMMAND interfaces with the Case / New Holland tractor valves by sending analog signals to the integrated valve controller, commanding either port A or port B flow of two of the rear tractor SCVs (For AFS Connect models any SCV can be linked to either of the two analog inputs).
To operate the SCVs in automatic control mode, the user first needs to arm one or both of the configured auto SCVs by toggling the Auto Auxiliary Control Valve toggles to ON.
Then, either push the respective SCV lever forward into the detent position or press the respective SCV button in front of the levers. This will cause the A and/or B LEDs on the pro 1200 screen to change to solid green, indicating the valves are active for automatic control. 
Levers can be moved manually, which will override automatic control and once let go, automatic control will resume. To disable automatic control, pull or push the respective SCV lever until it clicks. The A or B LED on the pro 1200 screen should now begin flashing, meaning that automatic control is paused until the operator resumes by pushing the lever to detent or pressing the SCV button again.
IMPORTANT: Moving the SCV lever alone will NOT disengage AUTO mode in modern case tractors, so movements based on any current valve signals will continue. Always keep this in mind during operation.
CNH Pre AFS Connect / PLM Intelligence
Applicable to:
Case IH / New Holland tractors prior to AFS Connect or PLM Intelligence systems.
Connection Method
COMMAND can control Case analog input (EHR) valve systems through the use of a T3H-V001 COMMAND Legacy Output Adapter.
Installation Steps
The Case / New Holland tractor connection for analog control signal inputs via the T3H-V001 adapter are generally found in one of three locations depending on tractor mode:
1. Locate the tractor SCV signal input connector:
   - Fuse compartment
   - Behind driver seat
   - Under cab exterior (4WD models)
2. Connect the T3H-V001 adapter to the tractor connection.
3. Connect the T3H-V001 adapter to the T3H-C002 harness.
Tractor Valve Configuration
Select the applicable configuration method:
- New-style instrument cluster
- Old-style instrument cluster
- Tier IV systems
New-style Instrument Cluster
Entering The Configuration Menu
Locate the corner post instrument cluster in the tractor cab (Pictured right).
Power up the tractor and press the PROG button on the instrument cluster until “CONFIG MENU” appears.
Press the “DECR” button until AUX/Hitch/PTO is highlighted and then press the “PROG” button.
Navigate to “EHR MENU” using the up and down arrow buttons and press the “PROG” button.
Setting Auxiliary Mode
Use the Up/Down arrow buttons to find “AUX VIEW” and then press the “PROG” button.
Use the Up/Down arrow buttons until “SCRPR OPTION” appears and then press the “PROG” button.
Depending on the implement being used, select the correct option using the Up/Down arrow buttons and then press the “PROG” button.
For single implement height control only - “1 LASER”
For dual implement height control - “2 LASER”
For single implement height & cross-slope control - “2 LASER”
Exiting The Configuration Menu
Press the Up/Down arrow buttons until “AUX EXIT” is shown and then press the “PROG” button.
Press the Up/Down arrow buttons until “EXIT TMF MENU” is shown and then press the “PROG” button.
Press the Up/Down arrow buttons until “EXIT” is shown and then press the “PROG” button.
Auto/Manual System Operation
The tractor will require an Auxiliary (1-3) switch, which is used to toggle between automatic and manual operation for
the two auxiliary inputs.
To toggle between Automatic and Manual operation for either SCV1 or SCV3, press the relevant side of the auxiliary
(1-3) switch.
Old-style Instrument Cluster
Enabling Auxiliary/Remote Valve Control
Turn on the tractor key switch and within 10 seconds, press and hold the “PROG” button on the instrument cluster for 3 seconds - “INST SET MENU” should appear.
Press the “INCR” or “DECR” buttons until “AUX SET MENU” is displayed, then press the “PROG” button.
Press the “INCR” or “DECR” buttons until “AUX SETUP” is displayed, then press the “PROG” button.
Press the “INCR” or “DECR” buttons to set the required number of “scrapers” between NONE, 1 and 2. In this situation a “scraper” can be considered equivalent to an SCV.
For single implement height control - select 1 SCRAPER
For dual implement height control - select 2 SCRAPER
For single implement height & cross-slope control - select 2 SCRAPER
Press the “PROG” button to accept the number of scrapers on the display.
Exiting The Configuration Menu
Press the “INCR” or “DECR” buttons until “AUX EXIT” is displayed, then press the “PROG” button.
Press the “INCR” or “DECR” buttons until “EXIT SET MENU” is displayed, then press the “PROG” button.
To complete the calibration process, use the key to turn the ignition off.
CNH Tier IV
Enabling Auxiliary/Remote Valve Control
Turn on the tractor ignition key switch and within 10 seconds, press and hold the “ENTER” button on the keypad to enter the Config Menu.
Press the Up or Down arrow keys until “TCU” is displayed and then press “ENTER”.
Press the Up or Down arrow keys until “EHR MENU” appears and then press “ENTER”.
Press the Up or Down arrow keys until “EHR SETUP” is displayed and then press “ENTER”.
“SCRPR NONE” will likely be displayed on the screen. Press the Up or Down arrow button until either “SCRPR 1 LASER” or “SCRPR 2 LASER” is displayed depending on the user’s application and then press “ENTER”.
For single implement height control only - select 1 LASER
For dual implement height control - select 2 LASER
For single implement height & cross-slope control - select 2 LASER
The user can now navigate out of the setup screens or turn the key off - the selected setting will be saved.
Auto-Auxiliary Mode Operation
The user can toggle between Automatic and Manual operation of the auxiliary outputs using the “1” and “3” buttons on
the console.
The LED on the relevant button will be illuminated when in Automatic operation mode.
During operation in automatic mode, the upper portion of the programmable display will show the auto state of the auxiliary
outputs.
Automatic control can be temporarily overridden by the operator using the remote hydraulic lever, which will cause the indicator LED on the “1” or “3” console button to flash.
Operation Notes
COMMAND interfaces with the CNH external remotes/valves by sending analog signals to the integrated valve controller, commanding either port A or port B flow of two of the rear tractor SCVs (For AFS Connect models any SCV can be linked to either of the two inputs, whereas older models are limited to SCV1 and SCV3).
To operate the SCVs in automatic control mode, the user first needs to arm one or both of the configured auto SCVs using the 1/3 switch, display or buttons on the armrest .
IMPORTANT: Moving the SCV lever alone will NOT disengage AUTO mode in modern case tractors, so movements based on any current valve signals will continue. Always keep this in mind during operation.

3.12 | Tractor Valve Set-up - Versatile
 Versatile — Analog Scraper Control
Applicable to: Supported Versatile L4WD and DeltaTrack tractors fitted with the 6-pin C920 laser/scraper control interface connected to the tractor Gateway Control Module (GCM).
NOTE: MFWD models may use a different interface arrangement. The 400 HP R3T3 MFWD documentation specifies separate installation instructions; the connection and setup procedure below has not been verified for that arrangement.
Connection Method
COMMAND controls the tractor’s rear electrohydraulic remote valves through the T3H-V001 analog output adapter and the tractor’s 6-pin scraper interface connection.
The tractor interface provides control of two remote valves:
Input 1: Remote valve 1
Input 2: Remote valve 3
Installation Steps
1. Complete the machine preparation steps in Section 5.1 and isolate the tractor electrical supply.
2. Remove the electrical compartment cover at the rear of the cab, behind the operator’s seat.
3. Locate the 6-pin scraper interface connector near the Gateway Control Module. In the Versatile installation documentation, this connector is identified as C920.
4. Connect the tractor-side 6-pin connection of the T3H-V001 adapter arrangement to the scraper interface.
5. Connect the T3H-V001 adapter to the valve output connection on the T3H-C002 ECU breakout harness.
6. Secure the harness clear of moving parts and sharp edges, refit the compartment cover and restore the electrical supply.
NOTE: If the scraper interface is not fitted, the appropriate tractor interface harness must be installed first. Versatile specifies interface kit 86053584 for the models covered by installation instructions 89004246.
The documented 400 HP R3T3 MFWD arrangement uses kit 86094592, with installation instructions 89007622. Have the Versatile dealer confirm the correct kit for the tractor model and serial number and follow the corresponding installation instructions.
Tractor Valve Configuration
The tractor’s scraper control interface is disabled by default and must be enabled through the Electronic Instrument Cluster.
1. Keep COMMAND disarmed and turn on the tractor ignition.
2. Use the display Up/Down buttons to navigate to CALIBRATION.
3. Press OK (SELECT) until Scraper Control is displayed.
4. Press Show subscreen.
5. Press OK to change the setting from OFF to ON.
6. Press EXIT to complete the setup.
7. On the EHR monitor, select Manual Operation for remote valves 1 and 3, and leave both hydraulic control levers in neutral.
IMPORTANT: Do not select Continuous mode for remote valves 1 and 3 when using the scraper control interface.
NOTE: Compatible tractor software is required. Versatile instructions 89004246 specify gateway software D2T411 or later for the covered Tier 4i models, D2T311 or later for the covered Tier 3 models, and dash software EICD214.
Software requirements for other models must be confirmed with the Versatile dealer. If the Scraper Control option is unavailable, have the dealer verify the tractor’s software and interface configuration.
Operation Notes
Once Scraper Control is enabled and the remotes are configured as above, the tractor accepts external control signals while the remote levers are in neutral. No lever detent action is required to activate the interface.
Use the COMMAND Arm/Engage switch to arm the system and engage automatic control.
The remote levers can temporarily override automatic hydraulic control. Returning a lever to neutral allows the tractor to respond to COMMAND again if automatic control remains engaged.
IMPORTANT: Moving a tractor remote lever does not disengage COMMAND automatic control. To stop automatic control, disengage it directly using the COMMAND Arm/Engage switch. Disengage by pressing the momentary side or move the switch to OFF to disarm COMMAND and disable its hydraulic control outputs.

3.13 | Tractor Valve Set-up - Fendt
Fendt ONE — 900 Gen 6/7 & 1000 Gen 2/3
Applicable to: Supported Fendt 900 Gen 6/7 and Fendt 1000 Gen 2/3 tractors using the COMMAND Fendt ONE valve interface.
Connection Method
COMMAND connects to the tractor’s rear SCV system using the T3H-V005 ISO Valve Adapter.
The adapter is installed inline between the tractor chassis harness and the SCV-bank harness. It connects the tractor-side and valve-side CAN networks to COMMAND through the CAN Interface connection on the T3H-C002 ECU breakout harness.
The tractor connection is located at the rear of the machine, on the right-hand side behind the ISOBUS socket.
Installation Steps
1. Complete the machine preparation steps in Section 5.1 and isolate the tractor electrical supply.
2. Locate the SCV-bank harness connection behind the rear ISOBUS socket, shown as A in the location image.
(A) – SCV / Chassis Harness connection
3. Release the connector latch and disconnect the SCV-bank harness receptacle (A) from the tractor chassis harness plug (B).
(A) – SCV Bank Harness Receptacle
(B) – Tractor Chassis harness plug
4. Connect the tractor-side receptacle (C) on the T3H-V005 adapter to the tractor chassis harness plug (B).
5. Connect the valve-side plug (D) on the T3H-V005 adapter to the SCV-bank harness receptacle (A).
(A) – SCV Bank Harness Receptacle
(B) – Tractor Chassis Harness Plug
(C) – T3H-V005 Harness ‘Tractor’ Receptacle
(D) – T3H-V005 Harness ‘Valve Block’ Plug
6. Route the adapter to the COMMAND ECU and connect it to the Tractor/Valve CAN Interface connector (pictured right) on the T3H-C002 ECU breakout harness.
7. Ensure all connectors are fully seated and latched. Secure the harness clear of moving parts, hot surfaces and sharp edges, leaving sufficient slack to avoid strain on the connectors.
8. Keep COMMAND disarmed and restore the electrical supply.
IMPORTANT: The SCV-bank harness connection and the nearby ISOBUS socket connection serve different purposes. Connect T3H-V005 to the SCV-bank harness as shown.
Where an ISOBUS connection is required for the installation, follow Section 5.4 using the appropriate COMMAND cab or exterior breakout harness.
Tractor Valve Configuration
Ensure the required tractor SCVs are enabled and unlocked using the tractor’s controls.
In Level COMMAND, select Fendt ONE as the valve interface.
Assign the required SCVs to the controlled functions, such as height and cross-slope. These assignments must match the implement’s hydraulic hose connections.
Verify valve communication and confirm that each function operates the intended valve in the correct direction.
Complete valve configuration and calibration before automatic operation.
Operation Notes
To prepare the selected SCVs for automatic control:
Ensure the required tractor SCVs are enabled and unlocked.
Move the COMMAND Arm/Engage switch to the middle ON position to arm COMMAND.
Move each selected SCV’s tractor control lever into the float position to enable external control of that valve.
Press the momentary side of the COMMAND Arm/Engage switch to engage automatic control once the system is ready.
NOTE: For SCVs configured for COMMAND control, the lever’s float position enables external hydraulic control. It does not place the valve into hydraulic float.
Before handing over the installation, verify manual valve operation and demonstrate how to enable, disengage and resume automatic control.
IMPORTANT: To disengage COMMAND automatic control, press the momentary side of the COMMAND Arm/Engage switch. Move the switch to OFF to disarm COMMAND and disable its hydraulic control commands.
Fendt 800 SCR/S4
Applicable to: Supported Fendt 800 SCR/S4 tractors using the COMMAND Fendt SCR/S4/MT valve interface.
Connection Method
COMMAND connects to the tractor’s rear SCV system using the T3H-V005 ISO Valve Adapter and the S/109 — Fendt 800 SCR/S4 Adapter Harness, specified for SolSteer kit K/SCV/008.
The S/109 harness is installed inline between the tractor chassis harness and the valve harness. It connects to T3H-V005, which routes the tractor-side and valve-side CAN networks to the CAN Interface connection on the T3H-C002 ECU breakout harness.
The tractor connection consists of a pair of 4-way connectors, located behind the panel under the rear-right wheel arch.
NOTE: Depending on the tractor specification, an additional valve harness may be connected in series, providing two identical connections in this harness chain. Either of these connections can be used.
Installation Steps
1. Complete the machine preparation steps in Section 5.1 and isolate the tractor electrical supply.
2. Locate the valve/chassis harness connection behind the panel under the rear-right wheel arch, shown as A in the location image.
3. Alternatively, it may be accessed from underneath the machine (A) – the bundle can be found amongst the hydraulic lines between the front of the wheel arch (B) and the valve block bracket (C).
(A) - Valve/Tractor Harness bundle
(B) - Front of the Rear Right Wheel Arch
(C) - Valve Bracket, behind Rear Right Wheel
3. Release the connector latch and disconnect the 4-way valve harness receptacle (A) from the tractor chassis harness plug (B).
4. Connect the 4-way “Tractor” receptacle (C) on the S/109 harness to the tractor chassis harness plug (B).
5. Connect the 4-way “Valve” plug (D) on the S/109 harness to the valve harness receptacle (A).
(A) – Receptacle on Machine Valve Harness
(B) – Plug on Tractor Chassis Harness
(C) – ‘Tractor’ Receptacle on S/109 Adaptor Harness
(D) – ‘Valve’ Plug on S/109 Adaptor Harness
6. Route the S/109 harness towards the rear of the tractor.
7. Connect the 5-way receptacle on the S/109 harness to the valve-side plug on T3H-V005.
8. Connect the 5-way plug on the S/109 harness to the tractor-side receptacle on T3H-V005.
9. Route T3H-V005 to the COMMAND ECU and connect it to the CAN Interface connector on the T3H-C002 ECU breakout harness.
10. Ensure all connectors are fully seated and latched. Secure the harness clear of the tyre, moving parts, hot surfaces and sharp edges, leaving sufficient slack to avoid strain on the connectors.
11. Refit any components removed for access. Keep COMMAND disarmed and restore the electrical supply.
IMPORTANT: The valve-harness connection and the connection at the rear ISOBUS socket serve different purposes. Connect S/109 to the valve/chassis harness connection identified above.
Where an ISOBUS connection is required for the installation, follow Section 5.4 using the appropriate COMMAND cab or exterior breakout harness.
Tractor Valve Configuration
Ensure the required tractor SCVs are enabled and unlocked using the tractor’s controls.
In Level COMMAND, select Fendt SCR/S4/MT as the valve interface.
Assign the required SCVs to the controlled functions, such as height and cross-slope. These assignments must match the implement’s hydraulic hose connections.
Prepare the selected SCVs for external control as described below, then verify that each function operates the intended valve in the correct direction.
Complete valve configuration and calibration before automatic operation.
Operation Notes
To prepare the selected SCVs for automatic control:
Ensure the required tractor SCVs are enabled and unlocked.
Move the COMMAND Arm/Engage switch to the middle ON position to arm COMMAND.
Move each selected SCV’s tractor control lever into the float position to enable external control of that valve.
Press the momentary side of the COMMAND Arm/Engage switch to engage automatic control once the system is ready.
NOTE: For SCVs configured for COMMAND control, the lever’s float position enables external hydraulic control. It does not place the valve into hydraulic float.
IMPORTANT: To disengage COMMAND automatic control, press the momentary side of the COMMAND Arm/Engage switch. Move the switch to OFF to disarm COMMAND and disable its hydraulic control commands.
Before handing over the installation, verify manual valve operation and demonstrate how to enable, disengage and resume automatic control.
Fendt 900 SCR/S4
Applicable to: Supported Fendt 900 SCR/S4 tractors using the COMMAND Fendt SCR/S4/MT valve interface.
Connection Method
COMMAND connects to the tractor’s rear SCV system using the T3H-V005 ISO Valve Adapter and the S/111 — Fendt 900 S4/SCR Adapter Harness.
The S/111 harness is installed inline between the tractor chassis harness and the valve harness. It connects to T3H-V005, which routes the tractor-side and valve-side CAN networks to the Tractor & Valve CAN Interface 6-way connection on the T3H-C002 ECU breakout harness.
Installation Steps
NOTE: The connection may be accessed from beneath the tractor, between the front of the rear-right wheel arch and the valve-block bracket. Removing the rear-right wheel and access panel provides additional access where required; follow the tractor manufacturer’s service instructions.
1. Complete the machine preparation steps in Section 5.1 and isolate the tractor electrical supply.
2. Locate the valve/chassis harness connection behind the panel under the rear-right wheel arch, shown as A in the location image.
(A) - Valve/chassis harness connection
3. Release the connector latch and disconnect the valve harness receptacle (A — X1587_P) from the tractor chassis harness plug (B — X1586_S).
(A) - Valve/Chassis Harness connection
(B) - Front of the Rear Right Wheel Arch
(C) - Valve Bracket, Inside Rear Right Wheel
4. Connect the 4-way “VALVES” plug (C) on the S/111 harness to the valve harness receptacle (A).
(A) - Valve harness receptacle (X1587_P)
(B) - Chassis harness plug (X1586_S)
(C) - ‘VALVES’ Plug S/111 Adaptor Harness
(D) - ‘TRACTOR’ Receptacle S/111 Adaptor Harness
5. Connect the 4-way “TRACTOR” receptacle (D) on the S/111 harness to the tractor chassis harness plug (B).
6. Connect the 5-way plug on the S/111 harness to the tractor-side receptacle on T3H-V005.
7. Connect the 5-way receptacle on the S/111 harness to the valve-side plug on T3H-V005.
8. Route T3H-V005 to the COMMAND ECU and connect it to the CAN Interface connector on the T3H-C002 ECU breakout harness.
9. Ensure all connectors are fully seated and latched. Secure the harness clear of the tire, moving parts, hot surfaces and sharp edges, leaving sufficient slack to avoid strain on the connectors.
10. Refit any components removed for access. Keep COMMAND disarmed and restore the electrical supply.
IMPORTANT: The 4-way valve-harness connection and the 4-way connection at the rear ISOBUS socket serve different purposes. Connect S/111 to the valve/chassis harness connection identified above.
Where an ISOBUS connection is required for the installation, follow Section 5.4 using the appropriate COMMAND cab or exterior breakout harness.
Tractor Valve Configuration
Ensure the required tractor SCVs are enabled and unlocked using the tractor’s controls.
In Level COMMAND, select Fendt SCR/S4/MT as the valve interface.
Assign the required SCVs to the controlled functions, such as height and cross-slope. These assignments must match the implement’s hydraulic hose connections.
Prepare the selected SCVs for external control as described below, then verify that each function operates the intended valve in the correct direction.
Complete valve configuration and calibration before automatic operation.
Operation Notes
To prepare the selected SCVs for automatic control:
Ensure the required tractor SCVs are enabled and unlocked.
Move the COMMAND Arm/Engage switch to the middle ON position to arm COMMAND.
Move each selected SCV’s tractor control lever into the float position to enable external control of that valve.
Press the momentary side of the COMMAND Arm/Engage switch to engage automatic control once the system is ready.
NOTE: For SCVs configured for COMMAND control, the lever’s float position enables external hydraulic control. It does not place the valve into hydraulic float.
IMPORTANT: To disengage COMMAND automatic control, press the momentary side of the COMMAND Arm/Engage switch. Move the switch to OFF to disarm COMMAND and disable its hydraulic control commands.
Before handing over the installation, verify manual valve operation and demonstrate how to enable, disengage and resume automatic control.
Fendt / Challenger MT
Applicable to: Supported Fendt and Challenger MT tractors using the COMMAND Fendt SCR/S4/MT valve interface.
Connection Method
COMMAND connects to the tractor’s rear SCV system using the T3H-V005 ISO Valve Adapter and the S/082 — Fendt/Challenger MT Adapter Harness.
The S/082 harness is installed inline between the tractor chassis harness and the SCV-bank harness. It connects to T3H-V005, which routes the tractor-side and valve-side CAN networks to the Tractor & Valve CAN Interface connection on the T3H-C002 ECU breakout harness.
The tractor connection is located at the rear-left of the machine. The SCV-bank harness receptacle is a flange-mounted 12-way Deutsch connector, secured to a bracket behind the SCV bank.
Installation Steps
1. Complete the machine preparation steps in Section 5.1 and isolate the tractor electrical supply.
2. Connect the 5-way plug on the S/082 harness to the tractor-side receptacle on T3H-V005.
3. Connect the 5-way receptacle on the S/082 harness to the valve-side plug on T3H-V005.
4. Locate the 12-way SCV-bank harness connection at the rear-left of the tractor.
(A) - SCV Bank Harness connections
5. Release the connector latch and disconnect the tractor chassis harness plug (B) from the SCV-bank harness receptacle (A).
(A) – SCV Bank Harness Receptacle
(B) – Tractor Chassis Harness Plug
6. Connect the tractor chassis harness plug (B) to the 12-way “Tractor” receptacle (D) on the S/082 harness.
7. Connect the 12-way “Implement PCB” plug (C) on the S/082 harness to the SCV-bank harness receptacle (A).
(A) – SCV Bank Harness Receptacle
(B) – Tractor Chassis Harness Plug
(C) – Implement PCB Plug, S/082 Harness Adaptor
(D) – Tractor Receptacle, S/082 Harness Adaptor
8. Route T3H-V005 to the COMMAND ECU and connect it to the CAN Interface connector on the T3H-C002 ECU breakout harness.
9. Ensure all connectors are fully seated and latched. Secure the harness clear of moving parts, hot surfaces and sharp edges, leaving sufficient slack to avoid strain on the connectors.
10. Keep COMMAND disarmed and restore the electrical supply.
IMPORTANT: The 12-way SCV-bank harness connection and the connection at the rear ISOBUS socket serve different purposes. Connect S/082 to the SCV-bank harness connection identified above.
Where an ISOBUS connection is required for the installation, follow Section 5.4 using the appropriate COMMAND cab or exterior breakout harness.
Tractor Valve Configuration
Ensure the required tractor SCVs are enabled and unlocked using the tractor’s controls.
In Level COMMAND, select Fendt SCR/S4/MT as the valve interface.
Assign the required SCVs to the controlled functions, such as height and cross-slope. These assignments must match the implement’s hydraulic hose connections.
Prepare the selected SCVs for external control as described below, then verify that each function operates the intended valve in the correct direction.
Complete valve configuration and calibration before automatic operation.
For detailed configuration and calibration instructions, refer to the Level COMMAND Manual.
Operation Notes
To prepare the selected SCVs for automatic control:
Ensure the required tractor SCVs are enabled and unlocked.
Move the COMMAND Arm/Engage switch to the middle ON position to arm COMMAND.
Move each selected SCV’s tractor control lever into the float position to enable external control of that valve.
Press the momentary side of the COMMAND Arm/Engage switch to engage automatic control once the system is ready.
NOTE: For SCVs configured for COMMAND control, the lever’s float position enables external hydraulic control. It does not place the valve into hydraulic float.
IMPORTANT: To disengage COMMAND automatic control, press the momentary side of the COMMAND Arm/Engage switch. Move the switch to OFF to disarm COMMAND and disable its hydraulic control commands.
Before handing over the installation, verify manual valve operation and demonstrate how to enable, disengage and resume automatic control.

3.14 | Receiver Connection and Configuration - John Deere StarFire
Applicable to:
John Deere StarFire 3000, 6000, 7000 & 7500 GNSS receivers using implement harnessing.
Harnessing Layout Overview
 
For use with COMMAND, the John Deere StarFire can be set up with typical John Deere implement harnessing:
RE174726 - Greenstar ISOBUS IBBC (Implement Bus Breakaway Connector) if not present, IBBC from other manufacturers are also appropriate for COMMAND.
BPF11117 - John Deere Front Extension Harness with Terminator (10m)
OR BPF11284 - John Deere Front Extension Harness (10m)
AND PF81137 - John Deere Implement Pigtail Terminator Wiring Harness
PF90538 - John Deere Implement Receiver Wiring Harness Kit
Connection Process
1. Connect the John Deere Front Extension Harness to the ISOBUS breakaway connection.
2. Route along the implement, allowing slack at pivot points and avoiding snag hazards.
3. Connect the Implement Receiver Wiring Harness to the Front Extension Harness and route the cabling up toward the receiver mast.
4. Connect the Implement Receiver Wiring Harness to the Starfire receiver 12-pin DT connector. A 12-pin Deutsch gender change adapter may be needed to connect the DT06-12SA connector on the implement receiver harness to the DT06-12SA connector on the StarFire Receiver.
5. Connect the PF81137 Implement Pigtail Terminator to the Implement Receiver Wiring Harness and secure the terminator to the implement receiver wiring harness.
Verify:
- Receiver powers on

3.15 | Receiver Connection and Configuration - Modern NMEA 2000
Case, New Holland, Trimble
This section covers connection of Novatel-based GNSS receivers using a 12-pin Deutsch interface.
Applicable to receivers including:
Case IH - Vector Pro
New Holland - PLM Cygnus
Trimble / PTx Trimble - AG-372, AG-392, NAV-900, NAV-960
Steyr - S-Guide
Parts Required
CNH 115-7100-009/10 - Front Extension Harness or JD BPF11284 - Front Extension Harness
CNH 115-7100-005 - Cable Adapter Terminator Gen I ISOBUS or JD PF81137 - Implement Pigtail Terminator Wiring Harness
T3H-G002 - COMMAND Impl Adapter - NAV-900
T3H-S001 - COMMAND Impl Adapter – Stub Junction
Connection Process
1. Connect the Front Extension Harness to the ISOBUS breakaway connection.
2. Route along the implement, allowing slack at pivot points and avoiding snag hazards.
3. Connect the T3H-S001 adapter to the Front Extension Harness.
4. Connect the Implement Pigtail Terminator to the T3H-S001 adapter and secure the terminator to the implement receiver wiring harness.
5. Connect the T3H-G002 adapter to the T3H-S001 adapter.
6. Connect the T3H-G002 adapter to the appropriate GNSS receiver port.
7. If using NMEA 0183 Serial, also connect the NMEA extension harness to the T3H-G002, then connect the other end to the T3H-C002 ECU breakout harness.
Verify:
- Receiver powers on

3.16 | Receiver Connection and Configuration - Trimble FMX/GFX/TMX with Ag25
Applicable to:
Trimble FMX, GFX, and TMX displays using NMEA 0183 RS232 output via 12-way DTM port.
Harnessing Layout Overview
Usage of the FMX/TMX NMEA 0183 output only requires the addition of a T3H-G004 adapter to the T3H-C002 ECU breakout harness.
Parts Required
T3H-G004 - COMMAND Trimble NMEA Output Adapter
Connection Process
NOTE: The T3H-G004 adapter routes the RS232 Tx and Rx connection to the COMMAND ECU and they are NOT replicated on the port replicator connector. All other pins are replicated for connection of other devices.
For FMX/FM1000
Connect the T3H-G004 adapter to Port C or Port D on the FMX display depending on whether antenna port 1 or 2 is to be used. Port C will provide the NMEA output for antenna port 1 while Port D will provide NMEA output for antenna port 2.
For GFX/TMX with TM-200 and EXP-100
Connect the T3H-G004 adapter to the EXP-100 port expander module.
A port replicator is supplied in case the port was already in use for something else, if so disconnect the device, connect T3H-G004 and then reconnect the device using the port replicator on T3H-G004. 
Connect the other end of T3H-G004 to the T3H-C002 ECU breakout harness.
Next, follow the setup process below for activating the NMEA output port on the FMX/TMX system.
Activating the NMEA Output - FMX/FM1000
Make sure that if present, Autopilot is configured for use on Port A - this leaves Port C and Port D free for NMEA output of either implement receiver. 
1. Select the GPS Receiver listed below Autopilot [Vehicle] and press "Setup".
2. Press the "GPS Output" button. 
3. Configure the NMEA GPS Output port as below:
Select Output Port A (ext. GPS)
Select a message rate of 5 Hz
Select a Baud Rate of 38400
Set Maximum GGA Quality to 0
Set Lat/Lon Precision to 8
Press the "NMEA Messages" Tab.
4. Configure the NMEA Messages as below:
Set GGA, to "On".
Set GSA, to "On".
Set VTG, to "On".
Leave all other messages set to "Off".

3.17 | Receiver Connection and Configuration - NMEA 0183 (RS232)
NMEA 0183 Serial (RS232) capable receivers can be connected to the COMMAND system. 
IMPORTANT: If the GNSS receiver does not provide terrain compensation, an IMU must be installed to maintain accuracy.
Parts Required
CNH 115-7100-009/10 - Front Extension Harness or JD BPF11284 - Front Extension Harness
CNH 115-7100-005 - Cable Adapter Terminator Gen I ISOBUS or JD PF81137 - Implement Pigtail Terminator Wiring Harness
T3H-S001 - COMMAND Impl Adapter – Stub Junction
T3H-G001 / T3H-G007 - COMMAND NMEA Extension Harness (8m or 12m)
Custom GNSS Adapter - Custom adapter for connection of the NMEA 0183 Serial compatible receiver to the T3H-S001 and T3H-G001/G007 adapters.
Connection Process
1. Connect the Front Extension Harness to the ISOBUS breakway connector. 
2. Route along the implement, allowing slack at pivot points and avoiding snag hazards.
3. Connect the T3H-S001 adapter to the Front Extension Harness.
4. Connect the Implement Pigtail Terminator to the Implement Receiver Wiring Harness and secure the terminator to the implement receiver wiring harness.
5. Connect the CUSTOM adapter to the T3H-S001 adapter.
6. Connect the CUSTOM  adapter to the receiver's port ensuring connector keys are lined up.
7. Connect the NMEA extension harness T3H-G001 or T3H-G007 to the CUSTOM adapter, then connect the other end to the T3H-C005 external breakout harness.
Receiver Configuration
Perform necessary setup of the GNSS receiver using provided manufacturer tools or programs:
Talker ID should be set to GP or GN
Messages enabled - GGA, GSA, VTG
Output Update rate - 10Hz recommended
Baud Rate - 38400
Verify:
- Receiver powers on

3.18 | IMU Installation and Configuration
Applicable to:
Systems where the GNSS receiver does not provide terrain compensation and/or Cross-slope control is required.
IMPORTANT: Some GNSS receivers DO NOT possess an internal IMU for terrain compensation purposes. If the receiver doesn't have terrain compensation, we highly recommend running a Cross-slope IMU on the implement in this situation so that Level COMMAND can apply the necessary terrain compensation to maintain accuracy with drain batters and other steeper slopes. 
IMPORTANT: The TARS-B IMU must be sourced from T3RRA (SKU: T3H-E003). These are supplied by T3RRA with the correct firmware and configuration to function with COMMAND. 
The TARS-B IMU is used for systems where the GNSS receiver does not contain an integrated terrain compensation functionality, in addition to enabling Cross-slope control using COMMAND. The TARS-B IMU provides pitch and roll angle measurements to the COMMAND ECU for control of the implement's Cross-slope angle.
Required Parts
The IMU connects via the implement receiver harnessing.
Front Extension harness
TARS-B Mounting Kit (3 x M6 + Washer + Nut)
T3H-E003 - COMMAND Inclination Sensor – TARS-B
T3H-S001 - COMMAND Impl Adapter – Stub Junction
Mounting & Orientation
The TARS-B IMU should be mounted pointing toward the front of the machine, similar to an arrow or triangle pointing forwards. Mount the TARS-B IMU to the implement securely, preferably using a suitable bracket. If suitable bracketing isn't available, neodymium magnets are also suitable, but must have enough pull-strength that there is minimal danger of the IMU being knocked out of position.
Connection Process
Connect the T3H-S001 adapter to the Front Extension Harness.
Connect the T3H-E003 to the T3H-S001 stub junction using the 4-way AMPSEAL connection.
Check that COMMAND is receiving Cross-slope angle input data - for more information please refer to the Level COMMAND manual.
Verify:
- IMU is securely aligned, mounted and connected.

4 | COMMAND Commissioning and Configuration

4.1 | Connecting to the COMMAND ECU
To access COMMAND ECU settings, enter the Settings menu and select the COMMAND tab. 
 
The Machine page is used to setup the connection between T3RRA software and the COMMAND ECU in addition to selecting the machine profile being used. To get to this page, first go to the COMMAND Settings page and click the top left 'Machine' button.
ECU Serial Connection
Begin by connecting to the COMMAND ECU using the Comms tab. Select the correct COM port from the list OR
Click the 'Scan ports' button to search for COMMAND data among all serial ports present. If the ECU is detected successfully, click Connect.
Connection Failure
If T3RRA Software fails to connect to the ECU over the chosen COM port, a warning will be displayed. Verify power and communication connections before retrying.
Successful Connection
Once connected to the ECU successfully, T3RRA Software will:
Establish communication with the ECU
Read stored parameters
Load the current machine configuration
 

4.2 | Checking for Software & Firmware Updates
Before proceeding with machine configuration and calibration, ensure both the T3RRA Software application and the COMMAND ECU are updated to the latest available versions.
Recommended Procedure
Connect to the COMMAND ECU successfully as performed in section 3.1.
Press Back to return to the COMMAND Settings Overview page, then press Done to return to the Apply View.
Check for available Level COMMAND software updates by pressing More > Update/Changelog > Download Updates:
Allow the updates to complete and restart Level COMMAND if prompted.
Return to the Apply View.
Check for available COMMAND ECU firmware updates by pressing More > COMMAND Settings > Admin > Update to Latest.
Allow any updates to install completely.
Restart the ECU by turning off the machine and restarting.
Software and firmware updates may include:
 
Feature improvements
Bug fixes
GNSS compatibility updates
Calibration improvements
Stability enhancements
After updating:
Verify communication with the ECU
Ensure no active faults or warnings are present at machine-level.

4.3 | Selecting A Machine Profile
Profile
The profile is used to select the type of implement being used, for detailed information on available profiles please refer to the COMMAND hardware manual section.
After selecting the appropriate machine profile, enter a Blade Width in the field shown - a red exclamation mark icon indicates that the blade width has not been set yet.
Press "Back" to return to the COMMAND Settings Overview and continue to 3.4 | Configuring GNSS.

4.4 | Configuring GNSS
The Inputs/Offsets page is used for selection of input sensors, such as GNSS receivers for height control or Inertial Measurement Unts (IMU) for terrain compensation and Tilt / X-slope control.
GNSS Input Configuration
Pre-configuration
Before configuring COMMAND for use with receivers such as StarFire, ensure that the following settings have been checked and enabled/disabled as follows within the relevant system (e.g. Greenstar display for StarFire receivers):
Shared Signal - OFF/Disabled
Shared Signal functionality allows two StarFire Receivers to share correctional signals in dual-receiver applications, providing the benefits of the higher signal level.
This setting should be set to OFF/Disabled for usage with COMMAND.
RTK-X - OFF/Disabled
John Deere RTK-X is a backup correction feature for StarFire™ receivers that maintains high-accuracy guidance for up to 14 days if the primary radio or mobile RTK signal is lost. 
This setting should be set to OFF/Disabled for usage with COMMAND.
Inputs
All COMMAND machine profiles have at least one height control function intended for use with a GNSS receiver for vertical position feedback.
Tap on the dropdown box below Input Type to view the different GNSS input options currently available.
This dropdown will update with any StarFire or NMEA 2000 receivers currently connected, which are then displayed with either "SF" or "N2K" followed by the receiver serial number. 
Verify that each function ("Height" if using a single receiver, "Height 1" & "Height 2" if using tandem or dual receivers) has a Fix Type of RTK before proceeding.
Fix Type MUST be RTK for accurate automatic control operation - lower accuracy fix types such as GPS only, Differential or Float RTK are not appropriate for accurate implement position control. Poor GNSS quality will affect machine positioning and automatic control performance.
Sensor Offsets
If using a GNSS receiver with Level COMMAND that is not capable of IMU-based terrain compensation, sensor offset calculations can be enabled. 
Blade Width - Enter the height of the GNSS receiver's measurement point above the cutting edge of the blade.
Positive = Above the cutting edge
Negative = Below the cutting edge
Fore/Aft Distance - Enter the distance forward or backward from the cutting edge of the blade to the GNSS receiver centre point.
Positive = Behind the cutting edge
Negative = In front of the cutting edge
Lateral Distance Enter the distance between the GNSS receiver centre point to the middle of the cutting edge of the blade.
Positive = To the right side of the middle as if standing behind the scraper
Negative = To the left side of the middle as if standing behind the scraper
Sensor Offsets Example:
In the example screenshot below, the GNSS receiver has been mounted:
2 metres above the blade cutting edge
0.5 metres behind the blade (away from the tractor)
0.3 metres to the left of the middle of the blade (looking toward the rear of the scraper)
Inputs / Offsets setup is now complete for profiles with only a height control function. 
If using Height & X-Slope, Tandem receiver or dual receiver profiles, continue on to set up the second control function's inputs/offsets.
X-Slope Input Configuration
Some COMMAND machine profiles have a Tilt / X-slope control function intended for use with an IMU for blade tilt / x-slope angle feedback. Tap on the Input Type dropdown box to view currently connected IMU sensors, and select the desired input sensor.
Once selected, IMU Status will change to Connected. Additionally, the Actual values for Fore/Aft Angle and Roll Angle below Sensor Offsets will begin updating with the current angle of the selected IMU sensor.
Accounting for IMU Mounting with Offsets
In cases where the IMU sensor has not been mounted on the blade at a perfect 0 degree pitch and/or roll angle, the save offset buttons
 can be used to set the Fore/Aft Angle and Roll Angle offsets to the current angle reading. Before doing so, use equipment such as a spirit level, or a known level surface to ensure the blade is completely level. Once done, press the Save icons to set each of the two offset values to the current angles.
Offsets are saved in the COMMAND ECU and only need to be changed if the position of the IMU sensor has changed, or if fitting the IMU to a different implement.
Press "Back" to return to the COMMAND Settings Overview and continue on to 4.5 | Setting Valve Configurations.

4.5 | Configuring Valve Outputs
The Valve Configs page is used to set up the control output interface
 for each control function.Appropriate signals of that interfacetype are then generated when automatic or manually controlling the implement. External joystick inputs are also configured on this page when making use of an analog or J1939 CANBUS joystick.
At the top left  corner of the screen, buttons will be shown if there are two available control functions. If using a Height control only machine profile, only the Height page is displayed.
Selecting the Valve Interface
Select the appropriate Valve Interface for the tractor, machine or external valves being used for that function. To begin with, set the desired Valve Interface type for the Height control function.
Different Valve Interface selections display different Valve Number selections depending on how they work - for more information please see the section in the COMMAND manual.
Selecting the Valve Number
When selecting Valve Interface options like JD CAN, J1939 and Fendt ONE will only display valve numbers that have been detected on the ISOBUS or machine CANBUS.
Once detected on the ISOBUS or machine CANBUS, any available SCV / Remote / Auxiliary valve selections will be displayed in the Valve Selection list as shown:
Analog valve interfaces such as Proportional Solenoid and PWM to 0-5V always display all available Valve Selection options. Valve signals for these selections generally rely on harnessing to connect the outputs of the COMMAND ECU to the proportional solenoid or laser system inputs.
Valve Status
Valve Status provides information on the current status of the selected Valve Interface and Valve Selection. The table below explains each of the different possible valve statuses that may appear:
Status
Description
Valve Unavailable
The selected valve is not available for use.
 
Waiting for Manual SCV Input
Move the SCV lever corresponding to the selected SCV - this must be done when using John Deere tractors.
 
Short to Ground
An overload has been detected and the resistance between the valve signal output pin and ground is near-zero, holding the output low. 
 
Short to Batt
An overload has been detected and the valve signal output pin is being fed power from another source holding the output high.
 
Open Load
A connection or valve issue has been detected, and the resistance between valve signal output pin is too high, indicating a broken wire or valve solenoid/coil.
 
SCVs Locked
The SCVs must be unlocked using the console SCV padlock button.
 
System Not Armed
The COMMAND Arm/Engage switch must be armed or re-armed.
 
If the Arm/Engage switch is currently Off:
Switch the Arm/Engage switch to the middle position.
If the Arm/Engage switch is currently in the middle position:
Switch the Arm/Engage switch to the OFF position, and then back to the middle position.
Ready
The selected valve is currently not active and the ECU is ready for automatic control or manual control commands for that function.
 
External Joystick Setup
Settings related to external joystick inputs for each function can also be found on this page. Enable external joystick control for each function using the toggle shown below. Once External Joystick Control has been enabled, the COMMAND ECU will begin using the selected Joystick Interface and Joystick Axis for manual implement control.
Selecting the Joystick Interface
Select the appropriate Joystick Interface for the Height function, depending on the joystick being used:
If using an analog voltage based joystick, select "Analog"
If using a J1939 CANBUS based joystick, select "J1939"
Selecting the Joystick Axis (Analog)
Next, select the appropriate Joystick Axis. For the Analog interface, Axis 1 is intended for the joystick Y-axis, Axis 2 is intended for the joystick X-axis and Axis 3 is intended for the joystick Z-axis if present.
Selecting the Joystick Interface (J1939 / CAN)
For the J1939 interface, select the joystick axis to be used for the function, e.g. Y-axis for manual height control.
Swapping the Joystick Axis' Control Direction
If moving the joystick in a certain direction causes the wrong physical movement direction, the axis can be inverted using the Invert Joystick Axis tick box.
Selecting the Override Behaviour
Lastly, select the desired Override Behaviour for the function:
"Disengage" will cause any joystick movement to disengage automatic control mode, requiring the operator to press the engage button again to resume automatic control.
"Momentary Disengage" will cause any joystick movement to only momentarily disengage automatic control mode. Once the joystick is no longer being moved, COMMAND will resume controlling the implement automatically.
Regardless of Override Behaviour selection, COMMAND will always prioritise joystick/manual control signals over automatic control signals to maintain full operator control of the implement.
 

3.6 | Valve Threshold Calibration
Valve Threshold Calibration establishes the minimum and maximum hydraulic outputs used by Automatic Control. Correct calibration ensures the implement can move smoothly for small corrections while still achieving full operating speed when required.
Access the COMMAND valve calibration page by going to: More > COMMAND Settings > Valve Cals.
Minimum Threshold (Min %) determines the lowest output that reliably opens the hydraulic valve.
Maximum Threshold (Max %) limits the highest output available to Automatic Control.
Calibration Procedure
The COMMAND ECU will not request movement of the implement unless the user has pressed one of the test buttons and is holding the engage button.
Select the function and direction to calibrate.
Press TEST and hold the machine ENGAGE button when instructed.
Increase Min. % until the implement begins moving consistently at a very slow speed, e.g. about 1 centimetre per second.
Adjust Max. % as required:
For proportional solenoids, limit output to approximately 1800 mA.
Reduce further if lower maximum implement speed is desired.
Repeat for all active directions and functions.
Calibration Test Buttons
The "+", "−" and "TEST" buttons are used during the calibration process to incrementally increase or reduce a given threshold, which can then be tested using the process described in the next section.
Calibration Progress Icons
This
 icon indicates that a value has not been calibrated yet. All minimum and maximum values for all active functions must be calibrated before performing automatic control.
This 
icon indicates that a value has been calibrated. Once all min and max values display this icon, the function has been successfully calibrated.
Ticks next to Min or Max values mean that the test button was pressed, but do not indicate a correctly calibrated function.
Verification
Verify that:
Implement movement begins smoothly when Min % is tested.
No excessive delay or valve chatter occurs.
Full-speed movement is available when Max % is tested without hydraulic instability.
All calibration indicators show as complete before commissioning proceeds.
 

4.7 | Cylinder Ratio Calibration
Overview
Cylinder Ratio Calibration compensates for differences in implement movement speeds between opposing control directions. Hydraulic systems rarely move at identical speeds in both directions. Differences in cylinder geometry, implement weight, hydraulic flow characteristics, machine design and gravity can all influence the speed at which the implement moves.
For elevation control, the implement may raise more slowly than it lowers due to implement weight and hydraulic loading.
For cross-slope control, left and right tilt movements may also occur at slightly different rates due to cylinder geometry and hydraulic system characteristics.
Cylinder Ratio Calibration measures the time taken to move the implement through its full range of motion in each direction and automatically calculates a correction ratio used by Automatic Control.
Calibration Procedure
Elevation (Raise / Lower)
Position the implement at its lowest operating position.
Press Start in the Up section.
Immediately raise the implement at full manual control speed until maximum height is reached.
 
Press Stop when maximum height is reached.
Press Start in the Down section.
Immediately lower the implement at full manual control speed until minimum height is reached - do not make contact with the ground, stop the implement before it does.
Press Stop when minimum height is reached.
Press Calc to generate the Elevation Cylinder Ratio.
Cross-Slope (Left / Right)
Position the implement at one end of its available tilt range.
Press Start Left or Start Right as appropriate.
Immediately move the implement at full manual control speed until the opposite end of travel is reached.
Press Stop when the limit of travel is reached.
Repeat for the opposite direction.
Press Calc to generate the Cross-Slope Cylinder Ratio.
Verification
After calibration:
Implement movements should respond consistently in both directions during Automatic Control.
Neither direction should appear noticeably slower or more aggressive than the opposite direction.
If hydraulic components, cylinders, valves or plumbing are modified, cylinder calibration should be repeated.
Continue to 3.8 | Tuning Automatic Implement Control.
 
 
 

4.8 | Tuning Automatic Implement Control
The purpose of tuning is to achieve stable, accurate Automatic Control that follows the design surface smoothly without excessive lag or oscillation. The Tuning page provides the controls and feedback required to optimise control performance. To find the tuning page from the Apply View, press More > COMMAND Settings > Tuning.
Tracking and Acquisition Behaviour
Once Automatic Control is engaged, the COMMAND ECU adjusts its control strategy according to the current error between the implement and the design surface.
Automatic Control transitions between Acquisition, Tracking and Out-of-Range regions according to the current error between the implement and the design surface.
The default Tracking Threshold and Acquire Threshold values are suitable for almost all applications and should not normally require adjustment. Modification of these parameters is generally not recommended.
Three operating regions are used:
Tracking Region (e.g. < 10cm Error)
The Tracking Region is the area immediately surrounding the design surface. This region provides the highest grading accuracy and is where the implement should spend most of its operating time.
When the current error is within the configured Tracking Threshold, COMMAND continuously adjusts hydraulic output using its tracking control algorithm to accurately maintain the implement on grade.
By default, the tracking threshold is 10cm for height functions, and 10 degrees for x-slope functions. Within the Tracking Region, hydraulic output is continuously adjusted between the calibrated minimum and maximum valve thresholds according to the current control error.
Acquisition Region (e.g. > 10cm but < 1m Error)
The Acquisition Region exists between the Tracking Threshold and Acquire Threshold.
When the implement is outside the Tracking Region but remains within the Acquire Threshold, COMMAND prioritises returning the implement to the Tracking Region as quickly as possible.
During acquisition, the ECU commands hydraulic output at the calibrated Max % threshold until the implement re-enters the Tracking Region. Once inside the Tracking Region, control automatically transitions back to normal tracking.
Out of Range (e.g. > 1m Error)
If the current error exceeds the configured Acquire Threshold, the implement is considered too far from the design surface for Automatic Control to operate safely or effectively.
In this condition, COMMAND does not command hydraulic movement. This prevents large or unexpected hydraulic movements when the implement is significantly displaced from the design surface. The operator should manually reposition the implement closer to the design surface before Automatic Control resumes operation.
Before Tuning
Before tuning, verify the following diagnostic indicators report normal operating status:
COMMAND ECU Status
Input Status
Valve Status
Automatic Control Diagnostics
Any active faults or invalid status conditions should be corrected before tuning begins.
Tuning Procedure
Tuning should always be performed under normal working conditions using the same machine speed, hydraulic flow settings and operating practices that will be used during production work.
 
 
 
 
T3RRA Software currently provides a single tuning parameter called Tracking Sensitivity. The objective is to achieve stable control while maintaining accurate tracking of the target surface. 
Load a suitable project or design surface.
Engage Automatic Control.
Perform several passes under normal operating conditions.
Observe implement behaviour and control performance.
Adjust Tracking Sensitivity as required.
Repeat until the implement follows the target smoothly without excessive lag or oscillation.
During normal grading, the implement should enter the Acquisition Region only briefly before returning to the Tracking Region, where it should remain for most of the grading operation. If the implement spends excessive time acquiring, overshoots repeatedly or oscillates around the target surface, further tuning may be required.
Adjustment
Typical Effect
Increase Tracking Sensitivity
Faster response, more aggressive control, increased risk of overshoot or oscillation.
Decrease Tracking Sensitivity
Slower response, smoother control, increased risk of lag and persistent tracking error.
Understanding Tuning Feedback
Current Error
Current Error displays the difference between the actual implement position and the target position. Large or persistent error indicates the implement is struggling to follow the target surface accurately.
Commanded Output %
Commanded % displays the control effort being requested by Automatic Control. This value can help identify whether the controller is responding aggressively enough to changing conditions.
Dynamic Performance Factor (DPF)
Dynamic Performance Factor (DPF) is a rolling performance metric used to indicate how closely the implement is following the target surface. A DPF value of 0 represents perfect control performance. Lower DPF values indicate better control performance.
As tracking error, overshoot, oscillation and other control deviations increase, the DPF value will also increase. DPF is calculated using approximately five seconds of Automatic Control performance data and is only updated while Automatic Control is engaged.
DPF should be used as a comparative tuning aid rather than an absolute performance target.
Common Tuning Symptoms
Correct valve calibration—particularly the Min % thresholds—is essential before tuning begins. Incorrect Min % calibration can produce symptoms similar to incorrect Tracking Sensitivity and cannot be corrected through tuning alone.
Tracking Sensitivity Too Low
Implement responds slowly
Current Error remains visible for extended periods
Blade struggles to reach target grade
DPF remains elevated due to persistent tracking error
Recommended Adjustment > Increase Tracking Sensitivity.
Tracking Sensitivity Too High
Implement reacts aggressively
Blade overshoots the target surface
Oscillation develops
DPF increases due to instability and overcorrection
Reduce Tracking Sensitivity.
Recommended Adjustment > Reduce Tracking Sensitivity.
Once Automatic Control is performing at an acceptable level, continue on to 3.9 | Validating System Operation.

4.9 | Validating System Operation
Status Validation Checks
Item
Expected Result
ECU Status
Connected and operating normally
GNSS Status
Fixed RTK solution
Position Accuracy
Within expected limits
Inertial Sensors
Reporting valid data
Valve Outputs
Available and responding
Machine Configuration
Correct implement selected
Active Faults
None present
If any item fails, correct the issue before proceeding.
Manual Hydraulic Validation
Verify manual hydraulic operation is as expected before engaging automatic control.
Raise and lower the implement using manual controls.
Confirm smooth movement.
Confirm correct movement direction.
Confirm full travel can be achieved.
Verify no unexpected hydraulic behaviour occurs.
Expected Result:
Implement responds immediately.
Movement direction matches commanded direction (Up/Down/Left/Right).
No instability or oscillation is present.
Automatic Control Engagement Validation
Verify Automatic Control can engage and operate correctly:
Position the machine in a safe operating area.
Load a valid design surface.
Satisfy all engagement requirements.
Engage Automatic Control.
Expected Result:
Automatic Control engages successfully.
No engagement warnings are generated.
Control outputs become active.
Automatic Control Response Validation
Verify control outputs produce the expected machine response when Automatic Control is active.
Engage Automatic Control on the previously loaded design surface.
Observe implement movement.
Expected Result:
Implement moves toward the design surface.
Movement direction is correct.
Correction occurs without hesitation.
No excessive overshoot occurs.
Grade Tracking Validation
Operate the machine under normal working conditions. Navigate to More > COMMAND Settings > Tuning.
Observe:
Current Error
Commanded Output %
Dynamic Performance Factor (DPF)
Expected Result:
Current Error remains stable and controlled.
Commanded Output % changes smoothly.
DPF remains low and consistent.
Automatic Control maintains the design surface without oscillation.
Commissioning Acceptance Checklist
Validation Item
Pass
ECU communicating successfully
☐
GNSS selected and stable with RTK Fix
☐
X-Slope sensor angle values updating correctly
☐
Hydraulic outputs verified
☐
Cylinder calibration completed
☐
Automatic Control engages correctly
☐
Control direction verified
☐
Tracking Sensitivity tuned
☐
Grade tracking validated
☐
Automatic Control performance acceptable
☐
No active faults present
☐
Once all validation checks have been completed successfully and Automatic Control performance has been verified, the machine is ready for operator training and production use.

4 | Creating Projects

4.1 | Main page / New Project Page
The Main Page appears when T3RRA software opens and when you select New Project within the Wizard.
Use the Main Page to access display settings, software configuration, the Operator’s Manual and T3RRA support tools.
Main Page with display, settings, manual and report controls, and project-start options
Application Information
In windowed mode, the title bar shows information about the running application and current project.
The information varies with the software and may include:
The name of the currently loaded project file.
The T3RRA application name, such as T3RRA Cutta 3, T3RRA Ditch 3, T3RRA Plane 3, T3RRA Survey 3 or T3RRA Apply 3.
The installed software version.
Full Screen Mode
Use Full Scrn to toggle between full-screen and windowed operation.
Full-screen mode maximises the display area available to T3RRA. Use windowed mode when you also need another application or a Windows function.
With a keyboard connected, F11 also switches between full-screen and windowed modes.
Full Screen button
Display Modes
Day/Night button
Three display modes help improve visibility in different operating conditions:
Mode
Description
Day
Standard light interface with a white background. This is the display mode used throughout this manual.
High Contrast
Uses an inverted colour scheme to improve visibility in some lighting conditions.
Night
Uses a dark background with a green foreground to reduce screen brightness during low-light operation.
Display modes demonstration
Settings button
Settings
Open Settings to review or configure the application.
Before starting work, check that the software configuration is correct for the machine, implement, project and GNSS system in use.
Refer to the Settings chapter for the available settings and their functions.
Open Manual
Use Open Manual to access the T3RRA Operator’s Manual.
On first use, this option downloads and installs a local copy of the manual on the tablet. After installation, Open Manual opens that copy directly.
The first download requires an internet connection.
Manual button
Report
Use Report to open the T3RRA bug report and feature request window.
Use this window to:
Report unexpected software behaviour.
Submit information about a problem.
Request or suggest new functionality.
Licence details automatically populate the Name and Email Address fields.
Submitting a report requires an active internet connection.
Report button
Bug report and feature request demonstration

4.2 | Importing External Files
T3RRA software uses the T3RRA Project File (
.tci) as its native project format. Data from supported external file formats can be imported and converted for use within a T3RRA project.
To import external data, select Import from the Main Page and choose the appropriate file or data source.
T3RRA Design provides additional import and conversion capabilities and can be used to prepare many other file formats for use with T3RRA software.
Supported Import Formats
The available import options depend on the type and source of the data.
Survey and Elevation Data
Data Type
Supported Formats / Sources
Drain Paths
CSV (
.csv); PCTXYZ
Full Field Surveys
CSV (
.csv); PCTXYZ; John Deere RCD Log; John Deere ADAPT Log; John Deere SWM Survey; MyJohnDeere Field Operation*
Survey Data
KML (
.kml)
*An internet connection is required when importing from MyJohnDeere.
Digital Elevation Models
JSONGrid; ESRI ASCII; Field Level II; AGPS Design File; Trimble Grid (
.xyzout).
Control Files
Data Type
Supported Format
Drain Paths
John Deere Ditch Tracks (SWP Ditch Tracks)
Full Field
Field Level II

4.3 | Importing Data
The native project format for T3RRA software is the T3RRA Project File (
.tci). Before using data from a supported external source in a project, bring it into the project with Import.
T3RRA Design offers additional import and conversion capabilities for preparing many other file formats for use with T3RRA software.
T3RRA Apply does not support data import. It can only use designs created in, or provided by, other T3RRA projects.
Loading and importing
In T3RRA software and this manual, loading and importing are distinct operations:
Loading opens an existing T3RRA 
.tci project file.
Importing brings external or third-party data into a T3RRA project.
A 
.tci project can normally be loaded directly. External data may need extra import steps: T3RRA may require information about the source data, or may need to interpret or convert it before use.
Import a file
Import external data while creating a project, or add it to an existing project at any time.
1. Open the Import window
Select Import on the Main Page or in the Wizard's Collect step.
With a keyboard connected, you can also open the Import window by pressing Ctrl+I.
Import button.
2. Select the import type and file
Choose the appropriate data or file type from the left side of the Import window.
Select Pick File, then browse to the file you want to import and select it.
Import window: import types on the left and Pick File for the selected type.
3. Configure the import
Some file types need additional information before they can be read, such as the coordinate system or projection.
Enter the required information, then select Read in the lower-right corner.
CSV data containing latitude and longitude coordinates must use WGS84 for those coordinates.
4. Review the data
After the file has been read, select the data to import. The right side of the window shows a preview of the available data.
T3RRA attempts to identify the file's data type automatically. If it identifies the wrong type, select the correct type using the available drop-down menus.
Review the data and your selections, then select Import.
Data selection and previews in the Import window.
5. Continue with the imported data
After the import finishes, the data is available in the project for surfacing and design operations as required.
Importing elevation survey point data automatically creates the corresponding surface in T3RRA.
Design step with design tools and surface status.

4.4 | Loading a Project
Load proj. button
Use Load proj. to open an existing T3RRA project (
.tci) from the standard project structure, another location on the tablet PC, or external storage such as a USB drive.
Start by selecting Load proj. on the Main Page.
Loading from Grower/Farm/Field
The standard T3RRA file structure organises projects by Grower, Farm and Field profiles.
Choose the appropriate Grower, Farm and Field. Then select the project and press OK.
See the section later in this chapter for information on creating and managing Grower, Farm and Field profiles.
T3RRA Projects: Grower/Farm/Field hierarchy and project list
Managing Saved Projects
Rename, Delete and Move project buttons, left to right
Each project has three management buttons:
Button
Function
Rename
Renames the selected project file.
Delete
Deletes the selected project. Deleted files are moved to the Windows Recycle Bin.
Move
Opens the project location window, allowing the selected project to be moved to another Grower, Farm, Field or file location.
Use these controls to organise existing project files within T3RRA software.
Finding a Project Manually
T3RRA projects are standard Windows files; they do not have to be kept in the default T3RRA folder structure.
For a project saved elsewhere, select Find manually.
Project browser: Show all files and Find manually
Browse to the required T3RRA project (
.tci) in Windows File Explorer. Select the file, then select Open.
Windows Open dialog listing .tci projects
You can also use this option to open a project on external media, such as a USB drive.
Finding All T3RRA Projects
If the saved location is unknown, select Show all files.
T3RRA scans the computer’s C: drive for compatible project files, adding them to the list as they are found. The lower-right progress bar shows that scanning is still underway.
Filter the results by project filename using the Search field.
Project scan: Search field and lower-right progress bar
Select the required project once you find it, then press OK.
Continuing a Loaded Project
Loading a project opens the Wizard at its appropriate stage. Saved progress is retained so you can continue where you left off.
If the project is ready for machine control, proceed directly to the Apply stage.
Apply stage with Start button and example design, drain and levee status
When ready to implement the project, select Start. You must accept the displayed Disclaimer before machine control can begin.
Disclaimer: inappropriate-design warning, Ok and Cancel

4.5 | Saving and Auto-Saving Projects
Saving a project retains its survey, design and other associated data so you can close T3RRA software and resume work later.
Although T3RRA software includes an automatic backup system, regularly saving your project is strongly recommended to minimise the risk of data loss.
Saving a Project
The Save project button is available from the main Wizard pages.
Select Save project to open the project save window. T3RRA's standard project structure organises projects using the following information:
Grower
Farm Name
Field Name
Project Name
Enter the required information, or use the drop-down lists to select an existing Grower, Farm or Field.
Select OK to save the project within the standard T3RRA project structure.
Saving to Another Location
T3RRA project files are standard Windows files and can also be saved outside the default T3RRA project structure.
Select Manually Choose Location to specify an alternative save location.
The save window can be navigated using either the folder tree on the left or the main file browser. Navigate to the required location, enter a filename, then select Save.
You can save elsewhere on the tablet PC or to another available storage location.
Important — Back Up Your Projects
Regularly copy important project files to a location separate from the in-cab tablet PC. This provides an additional copy of your project data if the tablet is damaged, lost or experiences a hardware failure.
Consider backing up at appropriate stages during a job instead of waiting until all work is complete.
Auto-Saving
T3RRA software automatically creates backup copies of project data while you are working. Autosaving helps protect against data loss if the application closes unexpectedly or the tablet PC experiences a software or hardware failure.
The autosave interval can be configured under Settings > Advanced.
Autosave files are stored in the same location as the active project and use the same project filename with an additional 
.backup suffix.
Recovering an Auto-Saved Project
When you load an existing project, T3RRA checks for its corresponding autosave file.
If an autosave exists and has a newer date and time than the saved project, T3RRA will prompt you to choose whether to load the newer autosaved version.
After an unexpected shutdown or other interruption, this can recover work completed since the last manual save.
Manually Recovering an Auto-Save
An autosave contains the same project data format as a regular T3RRA project and can also be recovered manually if required.
Using Windows File Explorer, locate the appropriate autosave file and make a copy before modifying it. Rename the copied file by removing the 
.backup suffix:
ExampleProject.tci.backup → 
ExampleProject.tci
Open the recovered copy as a normal T3RRA project, keeping both the original project and the autosaved version.

5 | Settings

5.1 | Application Tab
Application tab settings
Units
Language changes the application language.
Length selects the distance measurement unit.
Area selects the area measurement unit.
Volume selects the volume measurement unit.
Estimated cost
Estimated Cost sets the estimated cost per volume of dirt moved. To customise the currency format, click the button to the right. Enter custom text before and/or after the amount, such as a currency code or other information. The Custom currency example shows the resulting format.
The cost is per cubic meter or cubic yard and is calculated for cuts only.
Custom currency example: $1,234.56+tax (Before $, After +tax; two decimals)
Elevation map: 200ft x 200ft grid dimensions (red arrow)
Map display
Surface Grid controls whether grid lines appear on the map. By default, the grid resizes to best fit the field. The grid dimensions appear in the lower-right corner of the scanned area.
Lock grid size to: sets the grid size manually. Set it to 0 for auto-size.
Cut/Fill Color Style selects Magenta/Green or Red/Green/Blue. In Magenta/Green, magenta represents cuts and green represents fills. In Red/Green/Blue, red represents cuts, green is neutral and blue represents fills.
Surface Color Style (Low,High) changes the colours representing surface highs and lows. Choose from the drop-down menu; choices are limited to that menu.
Zero Cut/Fill Range sets the vertical range considered “on-grade”, helping identify areas requiring heavy earth moving. It does not change the design height or scraper blade height.
Slope Display shows slope as a Percentage or Ratio, for example 0.1% or 1/1000.
Buttons
Show zoom buttons enables buttons for zooming in and out instead of two-finger touch zoom.
Check Big buttons to enlarge the menu buttons.
Show Project Swapper button controls whether the project swapper button is displayed.
Transparent button background switches button backgrounds between gray and transparent on the design or implementation screens.
Input options
Show screen keyboard opens the keyboard automatically when needed.
Show Calculator displays a calculator when needed while entering values.
Behaviour
With Hide buttons after delay checked, buttons fade after 15 seconds on the implementation screen. Touch the screen to retrieve them.
Collection Beep enables audible notifications when elevation points are collected.
Updates and support
Use Download Updates to update to the latest version when connected to the internet.
Show update log lists software update details.
Set Support helps your dealer provide remote support. An Internet connection is required.
Click the Setup remote support button.
Get Support before installation: Setup remote support; Not installed
Get Support after installation: remote-support code and online status
After installation, a code appears. Your support person uses this code to connect to your computer and help you. When they connect, AnyDesk opens a confirmation window. Click the green [Accept] button to accept their help.
Select Close to save settings and exit the settings dialog.

5.2 | Equipment Tab
Equipment Tab Settings
Look ahead delay time
To control blade height, the software receives an elevation from iGrade™, processes it, then returns a control signal to iGrade™. Although this control loop is quick, its delay can cause inaccurate implementation in some situations.
A normal “Look ahead” time is 0.3 to 0.5 seconds. The exact time is machine specific and can be determined by experimentation; see Bi-Directional error in T3RRA in the troubleshooting section. Look ahead time helps account for the control-loop delay.
If look ahead time is not set, the delay can cause a consistent “bi-directional error”: the blade offsets incorrectly, moving up when travelling down a slope and down when travelling up a slope. If the time is too LOW, the implement always grades high down-slope and low up-slope; if it is too HIGH, the opposite occurs. Bi-directional error is most noticeable on steep slopes at higher speeds.
Blade positioning
Blade positioning specifies which part of the soil profile under the blade has priority in determining blade position. This option is available only after you enter ‘Implement width’ and enable ‘Output cross slope commands’.
Blade positioning options
Classic uses the design elevation as the target under the blade centre. Cross-slope is determined by design elevations under the left and right blade points. This makes it easy to over-dig down the midline of ditches or clip the top off a bank when straddling its ridge.
Average follows the overall trend of the design surface under the blade. It works well for reproducing a full-field design, but is less suited to abruptly changing slopes.
Average, on top determines slope in the same way as Average, but positions the blade above that trend to always avoid overcutting.
Snap fit attempts to find the best blade position without overcutting. As you traverse a break line, the blade snaps from one position to another. This is intended to cut and fill most efficiently, minimising passes and rework risk, and is tailored for abruptly changing slopes.
Single point provides Control-by-point: choose a blade position represented by the red arrow. That point follows the design elevation and cross slope even if the blade cuts below the design elsewhere. This is envisioned to work well for features such as V-ditches.
As-applied tracking
Enable As-applied calculations shows a graphic representation of the surface’s current state as work progresses. See Understanding how “As-applied” works.
NOTE: ‘Implement width’ is required to enable the As-applied feature.

5.3 | COMMAND Tab


5.4 | Limits Tab
Blade shift increment
Blade Shift Increment sets the height adjustment applied by the up/down elevation adjustment buttons in the implementation wizard step.
Limits tab with Blade Shift Increment, Static Blade Limit and Dynamic Blade Limit controls; As Applied is required
NOTE — The recommended blade shift increment is 0.03 - 0.06 feet (0.4 - 0.8 inches, or 0.01m - 0.02m).
Static blade limit
Static Blade Limit temporarily changes target design heights by a specified amount. At 50%, target cut and fill heights become 50% of the design values. It can also overfill a design by a percentage to allow for soil to sink over time: at 110%, a 100mm fill becomes 110mm to allow for future compaction.
Build banks, roads or mounds in gradual steps to allow even compaction of dirt.
Ignore cuts is useful when gradually building a mound. Use the vertical nudge to lower the design surface below the current surface, then slowly nudge it upwards so filling begins at the apex and proceeds outwards. In this case, avoid cutting where the nudged mound design is below the original surface. NOTE: Ignore cuts can be activated even when Static Blade Limit is set to “None”.
Set the static blade limit amount on the implementation screen.
Methods for progressively adding layers of dirt to a fill area
Static Blade Limit by Percent — Static Blade Limit by Percent: dashed curved layers progressing from the original surface towards the mound design
Static Blade Limit By Absolute Value — Static Blade Limit by Absolute Value: horizontal dashed fill layers beneath a curved mound design
Combination of vertical blade offset + Ignore cuts — Vertical blade offset with Ignore cuts: dashed mound profiles rising from below the original surface

5.5 | GPS Port Settings Tab
GPS connection settings
GPS settings with Raw GPS Data displayed
GPS displays the COM port used to communicate with the GPS. Select the correct port from the drop down menu.
Baud (Rate) sets the communication speed between the software and GPS. It should match the GPS baud rate.
Scan for GPS checks available COM ports and usual baud rates for valid GPS data.
NOTE: T3RRA software and iGrade™ must have identical Com port and Baud Rate settings in order to communicate.
Configuration and diagnostics
Warning/Error Configuration settings changed on this page remain in effect after the system is turned off.
Current displays the most recent GPS information received in a table.
Raw GPS data displays the most recent GPS data received. It is primarily used for diagnostics when support is required.
Output Data displays the most recent outgoing communications. It is primarily used for diagnostics when support is required.
Recent GPS errors lists the most recent GPS errors so that intermittent errors can be reviewed.
Open Device Manager is used to investigate COM port issues when required.
Connect and Disconnect manually start or stop communication with the app controller.
Serial port parameters
Com port: The adapter assigns the Com port #. The drop-down box lists all available com ports. Select the serial port physically connected by cable to the iGrade™ Application Controller. Windows Device Manager provides diagnostics for the current serial ports; you can open it using the button at the bottom left of Settings > GPS.
Baud rate: This is the speed of communication with iGrade™. It must match the iGrade™ settings, or T3RRA software cannot communicate with iGrade™. For iGrade v1, the recommended baud rate is 38400. For iGrade™ v2, the recommended baud rate is 115200, with NMEA Message Type set to “All”.
Warning Thresholds
Idle timeout: An error warning appears if no GPS messages are received within this time period.
RTK Timeout: This monitors the time since the last good RTK correction packet. It should not normally be set above 10-20sec.
Max VDOP: Vertical Dilution of Precision measures altitude accuracy. Keep this value as low as possible for the most accurate implementation, but setting it lower than 2 may interrupt use of T3RRA software.
Min Satellite Count: Sets how few satellites the GPS needs to see before a warning appears.
Input/Output
Field
Meaning
Current & Raw GPS Data:
Current shows the receiver’s current position data. Raw GPS Data shows all incoming messages.
Output Data:
Outgoing command messages 
Recent GPS errors
Current GPS state and any errors 
Lat & Lon:
Your current location coordinates (latitude and longitude).
Altitude:
Your current height above sea level, displayed in the chosen measurement format.
Num Sats:
The number of satellites currently tracked by your GPS. It is linked to Min Satellite Count in Warning thresholds: an error appears if the count drops below that setting.
Fix:
The type of position solution calculated.
Time:
The current GPS time.
Last Correction:
The time since the last differential correction message from the base station. Keep it as low as possible for the most accurate readings. It is linked to RTK Timeout in Warning thresholds: an error appears if it exceeds that limit.
VDOP:
Vertical Dilution of Precision. An error appears if this number exceeds Max VDOP in warning thresholds.
Speed:
Your current travel speed
Heading: 
Current heading out of 360 degrees

5.6 | Advanced Settings Tab
Advanced tab in Settings
Logging
Enable GPS data log
Keeping this enabled is highly recommended. The GPS data log accompanies error reports to help find a solution.
Enable diagnostic data
Keeping this enabled is highly recommended: the collected data helps support assist you when issues occur.
Use early access for update
Enables software updates to early access (preview) versions of the software. Opt in to receive new features, enhancements and fixes before they are included in a stable release.
Root save folder
Specifies the default location where T3RRA saves project files and associated data. Users can manually enter a folder path or select the folder icon to browse for a different location. The reset icon restores the default save location (
C:\ProgramData\T3RRA\Saves).
Troubleshooting tools
Open Task Manager opens the computer's task manager tool, which displays all systems currently running on the computer.
Show Wi-Fi networks opens the computer's Wi-Fi network panel. The tablet needs to be connected to Wi-Fi to enable the use of the remote support tools. 
Explore error logs area opens the Windows folder on the tablet containing all error log files. If an issue occurs, send support the latest file to help identify and correct the cause quickly.
Version Manager
Use Version Manager to downgrade the software version if you experience a particularly bad error. Adding a support request when you use this is highly recommended.
Disable serial mouse
Disabling the serial mouse can correct a cursor that jumps around the screen or “COM in use” errors.
Reset to Default resets all settings to default.
Saving Settings 
Save settings will save the current software configuration and preferences for future use. 
Load settings will load previously saved settings. 
Reset to default will restore all software settings to their original default values.
Backup and display settings
Automatic backup frequency is a drop-down menu for changing how often T3RRA Software backs up your work. Options are Never, Low, Medium and High.
Terrain model Quality defaults to High. Its effect is most visible on surfaces in 3D: lowering it may smooth out displayed details. The details and depressions remain, but are not represented in the 3D display.
Map update rate changes how often the map updates during Surveying and Implementation.

6 | Wizard

6.1 | The T3RRA Wizard
The wizard guides you through the 4 logical steps in the T3RRA software process.
To start a new project, press New proj. in the top left corner of any wizard page. This returns you to the Main Page/New Project Page.
T3RRA Survey 3 does not include the Design or Apply (Implementation) wizard steps. Manual sections about these steps do not apply to T3RRA Survey 3.
 

6.2 | Common tools found in the Wizard
Several buttons appear on multiple wizard pages. The reference below shows the tools and any limits on where they are available.
Tool and availability
Controls
Zoom Controls
Choose Model/Layer
Markers (limited to surveying and implementation)
Start, Stop, and Pause Survey
 
 
Edit Drain (limited to surveying and surfacing)
Extend Drain (limited to surveying and surfacing)
Split Drain (limited to surveying and surfacing)
Delete Points (limited to surveying and surfacing)
 
Tracking Options 2D View(limited to surveying and implementation)
 
 
Tracking Options 3D View(limited to surveying and implementation)  
 
Screenshots
Battery power indicator

6.3 | Zoom Controls
Pinch to zoom
Use a two-finger pinch on the screen: move your fingers together to zoom out, or apart to zoom in.
Enable zoom buttons
Alternatively, use the zoom in and zoom out buttons on the bar at the top right.
The zoom buttons are hidden by default. Under Settings > Application, select Show zoom buttons to enable them.
Show the entire surface grid
The Zoom to full button works independently of these zoom controls and does not need to be enabled. Press it to zoom in or out to the largest map view that shows the entire surface grid.

6.4 | Image Overlays
Image overlays imports geo-referenced image data into a field.
To access the image overlay, press the view button on the top of the screen. 
Load image
Use Load image as the primary method of adding overlay images to the field. Press the button to open a file window, then select the desired file. Supported overlay image types are .KML, .TIFF, .JPG, .JPEG, .PNG, .GIF, .BMP, .JSONGRID and .KMZ.
Load image from JDOC
Download images from the John Deere Operations Center into the image overlay to compare previous data, such as yields, with current survey data.
Delete images
To delete an overlay image, uncheck the box next to it, then press the delete images button. This removes the layer from the available list. Images can only been deleted if they are not selected in check box and currently visible. 
Transparency
To see the layers below an overlay image, check the box to the left of its layer, then press the transparency button on the right side.
Layers
Press a layer to display it over the other layers.

6.5 | Choose Mode/Terrain/Layer
Mode
2D View displays the map as a 2D aerial view by default.
3D View shows terrain as small hills and valleys. Press the vertical scale magnifier shown below to exaggerate the hills and valleys, making them easier to identify. To change the focal point in 3D, quickly double tap a position.
View
A map has several display options.
Surface
Surface selects the source of the map’s 3D topography and coloring. There are 6 options:
Elevation shows the original surface before any dirt is moved. Its Red to Blue gradient shows low areas in Red and high areas in Blue.
Design shows the applied design: the surface you are trying to reach at the end of the dirt moving process. It uses the same color scheme as Elevation.
Cut/Fill shows where the design will take dirt from and where it will put dirt. The layer’s coloring depends on the current Cut/Fill color scheme in Settings > Application.
As applied shows changes as they occur, providing a real-time view of work progress. It uses the same color scheme as Elevation.
This terrain is only available if As Applied mapping has been enabled in the machine tab of Settings.
As Cut/Fill shows where the design will take dirt from and where it will put dirt. The layer’s coloring depends on the current Cut/Fill color scheme in Settings > Application.
Pass Count shows how many passes you have made over an area.
This layer is only available once pass count tracking has been enabled in Settings > Machine.
Layers
Turn defined layers on or off here, including the current surface described above, depressions, drains, linework, and loaded overlays such as KML. The buttons at the top load and clear layers. Each layer has a transparency toggle button beside it; click that button to change the layer’s transparency.
NOTE: The depressions layer is not shown if the project only has drains (and no elevation surface).

6.6 | Markers
Markers identify points of interest at user-selected locations on a design. A marker can also serve as a benchmark “control point” location. For instructions on using a marker as a Benchmark location, see Set Zero using a marker in this manual’s Implementation section.
Use Set marker to place a marker on the map. Markers are always placed at the current location.
Creating a new marker opens a window where you can enter its name.
Edit Marker opens a window where you can select and edit any marker on the map.
The Edit Marker window displays information about each placed marker, including its heading, distance and height relative to your current position.
To rename a marker, press the button next to its name.
Use the buttons at the bottom of the window to select all markers, delete the currently selected markers, export the currently selected markers or close the window.

6.7 | Start, Pause and Stop Survey
On the Surveying screen, Start, Pause, and Stop control the beginning and ending of the relevant activities.
Normal function
Start begins surveying data. The button’s title reflects the action it will start.
Pause lets you continue a path after moving around obstacles. For example, while surveying a drain, press Pause, move around the obstacle, then press Start. The system treats the drain at your new position as a continuation of the same drain.
Stop ends surveying the area. The next Start begins a separate area. For example, while surveying a drain, press Stop, move, then press Start. The system treats this as a new, separate drain.
Drain Surveying function
When the software is set to survey drains, the functions of Start, Pause, and Stop change slightly.
Start starts surveying a drain.
Stop ends the current drain survey. Pressing Start afterward starts a new drain.
Pause collection when the collecting vehicle cannot physically traverse a section of drain line.

6.8 | Drain Surveying specific edit controls
These tools are available in the Collection and Surfacing stages when drain survey points exist.
Edit Drain
Merge Drains
Extend Drain
Split Drain
Edit Drain
Use this button to edit complete drain paths in the project.
Press Edit drain to open a window listing the available drain paths. Select a drain, then press the corresponding button to rename or delete it.
Merge drains
Use this tool to join two drains at either end. Merging creates a copy of the original drains with a joining line. You then have the option to delete the originals.
Extend drain
Use this tool to extend a drain from either end of its surveyed path. This is useful when the drain needs to reach a location that the surveying vehicle could not access directly.
Press Extend Drain to open the extension screen. You can extend the drain in any direction.
The red arrow indicates both the direction of the extension and the end of the drain that will be extended.
Use the controls on the left to select a drain. Then choose the extension’s length, elevation and direction.
Rel elevation adds or subtracts the entered value from the existing drain end’s elevation to calculate the extended end’s elevation.
Abs elevation sets the extended drain end’s elevation to the entered value.
For example, to extend a drain 1ft below an ending elevation of 100ft, use either of these values:
Rel elevation value: -1ft
Abs elevation value: 99ft
After making the adjustments, press Extend Drain.
Split drain
Use Split drain to divide one drain into two separate drains.
First, select the drain from the Which drain to split? drop-down menu at the bottom center.
After selecting a drain, press anywhere along its profile. A blue arrow shows where the split will occur. You can also move the arrow using the left and right arrows to the right of Split at Distance.
Choose the Marker button to create a Marker for reference.
Enter a name in New drain name. When the settings are satisfactory, press Split Drain At Point to apply the split.
NOTE: The new drain name must differ from every existing drain name. If it matches an existing name, Split Drain At Point is disabled.

6.9 | 2D Current Position Tracking Options
When surveying or implementing, four options control how the vehicle location is tracked on the screen in 2D: Scroll, Center, Dir. up, and Manual.
Scroll
The GPS position indicator moves freely on the screen. As it approaches the edge, the screen moves to keep the indicator visible.
Dir. Up
When Direction Up is active, the map rotates so that the direction of travel is always at the top of the screen.
Center
The Center option has two parts: it locks the indicator to the center of the screen, moving the map as the indicator moves to keep it centered; it also locks the map orientation with north always at the top of the screen.
Manual
Manual does not lock the map direction or fixate on the indicator location, so you can inspect other sections of the map while surveying or implementing.
Caution: in this mode the vehicle icon can move off the edge of the map.

6.10 | 3D Current Position Tracking Options
When surveying or implementing in 3D, choose between two tracking options: Follow Tractor and Stop Following.
Follow Tractor
Follow Tractor button.
Press Follow Tractor to place the camera behind the tractor. This option keeps the tractor at the center of the screen at all times. In 3D, the camera can only be moved to view the tractor from different angles; it rotates with the tractor as the primary focus.
Stop Following
Stop Following option: the button shown reads “Stopped Following”.
With Stop Following, the camera stops following the tractor. The tractor can drive off the edge of the screen without the camera following it. However, whenever you change the camera angle, the camera snaps back to the tractor's current position and uses the tractor as the focal point.

6.11 | Screenshot
To capture the current screen, press the camera button at the top right of any mapping window.
A pop-up appears after the screenshot is taken. Press ‘Yes’ to open the folder where the screenshot is saved.

6.12 | Battery Level
To capture the current screen, press the camera button at the top right of any mapping window.
A pop-up appears after the screenshot is taken. Press ‘Yes’ to open the folder where the screenshot is saved.

7 | Surveying

7.1 | Surveying Overview
The ‘Collection’ wizard step allows you to collect elevation heights from your field. This is done to create a topographic representation of the field surface. 
In T3RRA software collection is normally accomplished by driving over the surface of a field while logging GPS elevations. Once sufficient points have been collected (surveyed) they are then processed in order to create a Digital Elevation Model (see definitions). In T3RRA software we refer to this process as ‘Surfacing’ and this is performed in the next wizard step.
The key concept with surveying is: “Collect enough points to create a good surface, but no more”.
If you do not collect enough points from the field you will end up with a poor representation of the field. If you collect too many points you will have wasted time and fuel in order to create a surface that is not markedly better than one created from fewer points. As well as the number of points collected, the accuracy of the final surface depends on where the points are collected. 
Getting a good representation of the field surface is not a difficult task. Getting a good surface representation while minimizing time spent doing it requires more effort and experience. Figuring out the total number of points to collect, and the best pattern to collect them in, is an art that requires experience. If you do a lot of it you will soon start to understand how to improve and optimize your surveying technique.
However, new and casual users need not despair. In general, we would advise users not to attempt to optimize this activity too much. Extra time spent getting a good survey is usually insignificant relative to the time spent moving dirt. A thorough survey and an appropriate design will save far more dirt moving time than any time added while over-surveying.
Also, be sure to read the section ‘Surveying tips’ later in this document.

7.2 | The 'Collect' wizard page
Open the Collect Wizard
If you are at the Main Page and want to begin surveying first press the 'Wizard' button.
Import or Begin a Survey
You are able to import survey data from other sources as CSV for Field and Drain surveys or as KML for Boundary Surveys. Press the 'Import' button to import existing survey data in CSV format.
Hint: If you would like to examine the CSV format used by T3RRA software to import/export survey points, simply export some collected data and open the resulting file in a text editor.
To begin collecting elevation points use the ‘Start’ button (in the centre section of the screen). If data has previously been collected this will still be present when you enter the mapping screen.
 
 
 
We consider it best practice to drop a marker for reference prior to beginning any survey. Do this at a location you know you can return to reliably. This will assist you in shifting the survey points in the future should it become necessary to do so.
Choose a Survey Type
Before collecting elevation points you must decide whether you are collecting data for a full field, for a drain or a boundary. We distinguish between these three collections because the way the data is processed in subsequent steps is quite different. You can however collect drains, full field and boundary surface points at the same time by swapping between them as required. Survey modes are swapped between by pressing the survey button in the bottom right of the screen until the icon for the type of surveying you wish to do is displayed or until the text in the top left corner of the screen reads as the type of surveying you would like to do. 
NOTE: Best practice is to not overlap different survey types. Instead, press Pause when traveling over different survey points then Resume once clear.
(the icons below: Field survey on left, Drain survey in center, Boundary survey on right)
Collect and Edit Survey Points
To begin collection select the ‘Start’ button.
The ‘Pause’  button is used to finish data collection while moving around obstacles or avoiding replication of survey points, while the ‘Stop‘ button is used when data collection is finished.
You can edit your survey data at this point. For more information, see “Survey point edit controls”. These options are documented under the collection page, and operate the same way.
When all collection and editing of data points is complete use the 'Return' button to return to the main ‘Collect’ wizard page. You will be asked to confirm keeping changes to the elevation data.
Save the Project
At this point it is recommended that you save your project. If you wish to save the file externally use 'Export' step of the wizard found at the bottom of the page. Field and Drain Surveys data will be exported as CSV files, Boundary survey data will be exported as KML files
NOTE: You should always use ‘Save proj.’ to save your T3RRA project. This saves in the native file format and is the easiest file type to reopen in T3RRA software. Exporting is optional, and depending on the type of export you perform you may not always be saving all the information that exists with your T3RRA software project.
Video: Watch the surveying workflow video on YouTube.

7.3 | Field Surveying
When you enter surveying you will be in Field surveying mode (except in T3RRA Ditch where Drain survey mode is the default). Points that are collected in field survey mode are shown on the map as circles.
We do not require you to collect a field boundary when surveying. Some do consider it best practice to drive the perimeter of a field regardless, collecting elevation points as they go.
When surveying fields travel slowly across the field to ensure that plenty of data is recorded for an accurate representation in later stages. 
We recommend between 30-50 feet (9-15 metres) between survey passes to ensure that enough information is gathered. The “best” spacing is dependent on the specifics of the work being done. The wider the swath that is taken the less information that is gathered.
Collected points can be deleted using the two available methods:
Delete in a circle.
Delete points in line. 
Markers can also be placed and deleted.

7.4 | Magic Plane
The Magic plane is a shortcut method for creating a plane of survey points without actually having to collect them. This can be used when the grade and direction of the desired plane is known and getting accurate cut/fill volumes is not required. An example would be a building pad.
NOTE: If you use ‘Magic plane’ as your original surface you are unlikely to be able to create an accurate cut/fill map. This is because the newly created plane is unlikely to match the actual real world surface. Any cut/fill map created from a design you place on a ‘Magic plane’ will be relative to it, and not the real world surface.
Start Point - The 2 options available are center or edge, this will generate the magic plane with your current location (or the  location of some pre-existing surveyed points) at the center, or at the center of an edge.
Field Length - This is the length of the magic plane and can be adjusted as needed.
Field Width - This is the width of the magic plane and can also be adjusted as needed.
Direction - This sets which direction the magic plane is oriented.
Slope Percentage - This sets the degree of the slope.
Secondary slope - This is enabled by selecting the “Enable secondary slope” check box. (the secondary slope runs at 90° to the primary)

7.5 | Drain Surveying
T3RRA has a drain collection mode that you must use when surveying drain lines. The button is at the bottom right of the survey collection map window. 
When in 'Drain survey' mode you must drive the length of the drain in order to collect the data. It doesn’t matter whether you drive from source to outlet or vice versa. When points are collected in 'Drain survey' mode the data points are displayed as squares.
Available features:
Delete all or portion of drain line.
Extend drain’s length.
Split drains.
(see Drain specific edit controls)
After you have finished surveying:
Design drains from either direction.
Choose Best-Fit, Multi-Fit, or Linear-Fit drain design.
Add batters/backslopes to drains.
Export drains as guidance curves.

7.6 | Boundary Survey
Boundary surveying allows you to survey the outer perimeter of a field which can be used for Design purposes. 
In T3RRA software the boundary survey mode is located in the bottom right corner of the survey screen and is accessed by pressing the survey mode button until the boundary survey mode icon is displayed and ‘Boundary’ is displayed in the top left corner of the screen.
When using Boundary survey it is not required to survey the entire perimeter of the field. If you start your system in one corner of your field but you know the position you want to start from is directly across from you, you can survey the rest of the sides of the field and the Boundary survey tools will automatically close the boundary line once you press the stop collection button.
To make a boundary with few points (as shown above), simply start collecting a boundary while stationary, then pause collection while traveling to the next corner. Once at the next corner, resume collection for a few seconds, then pause to go to the next corner. In this way you can collect a boundary with only the points you want, but you can use the delete points tools to thin out extraneous points as necessary afterwards.
There are 2 tools specific to only Boundaries: Delete boundary, and Scale the boundary.
Delete boundary: allows you to delete a specific boundary if multiple have been recorded or if you wish to start the surveying over again. Elevation points that are collected while recording the boundary will remain even after the boundary has been deleted.
Scale the Boundary: this tool allows you to expand or retract the size of the boundary lines by moving each boundary line a set distance away from the original position to a maximum of 98ft (30m) and a minimum of -98ft (-30m). 
Exporting boundary information: Boundary survey information can be exported as Shapefiles or as KML files
Watch the Boundary Survey video on YouTube.

7.7 | Survey Guidelines
No matter what type of surveying you are doing you are able to implement guidance lines on the survey surface by pressing the guideline button at the top of the screen.
The 'Guidance' button will cause a pop-up window to appear on the screen with a two design options for AB lines in the 'Type' dropdown menu.
The default type is 'point A + Point B'  which draws AB lines based on 2 set points on the field. The location of these points can be set in 3 different ways 
If you know the latitude and longitude for the points they can be input manually.
Drive to Point A and click “Set” then drive to Point B and click “Set”.
If you have recorded markers you are able to use their GPS locations for either or both of the points.
A single point can be used by selecting the 'Point A + Heading' type. Like with using 2 set points Point A can be set using the same methods mentioned above. The 2nd point is replaced with your current heading and can be adjusted to a heading of your choice.
Once the 'Type' is selected the guidelines will then create a central line from the information provided and duplicate lines parallel to it, spacing the to what has been set in the ‘Track spacing’ field at the bottom of the pop-up window. 
The lines made with the guidance tool will be blue and the centre line will be red.
The nearest line to your current location will be highlighted bright purple.
As shown below when surveying a light bar at the top of the screen will display how far you are from the nearest line, which side of the line you are on, and which line you are on (e.g. E2 is 2nd line east of the centre line).

7.8 | Surveying Tips and FAQ
Tips for Collecting Elevation Data
Use a vehicle where the GPS-to-ground offset will remain constant (such as a tractor, truck, or ATV – not a harvester or self-propelled sprayer that will shift vertically depending on load).
If the field you are surveying has wheel ruts, either stay in them or stay out of them. Do not alternate between them.
Do not survey in fields where there will be variable wheel sinkage – ie., if part of the field is wet and part is dry.
Trace the course of any waterways and banks you want to include in the elevation model. Drive the centerlines of such features, and also drive the shoulders.
Ensure that your base station is within 1.5 miles (2.4 km) of the area you are surveying.
Areas that exhibit a rapid change in slope will need to be surveyed more intensely (closer swatch widths)
Survey at a slow enough speed so the vehicle does not rock or bounce measurably.
If you are using an implement based receiver to survey with, DO NOT alter the elevation of the implement while surveying. If using a scraper mounted receiver, raise the blade to full height before starting the survey and leave it at this position for the duration of the survey.
Save your data as often as necessary. Consider how long it would take to re-do the work you would lose if your computer crashed at any point in the survey.
Use markers to set benchmark height/control points.
Collect elevation data on 30-50ft (9-15m) passes (no more than 80ft/24m). Complete more passes in areas of the field with detailed terrain.
Try not to double survey areas. Use the pause button to skip over the already surveyed area before recommencing.
Drop markers as required.
Points are logged once every 2 meters (6.6 feet). The data received between these points will be averaged. This reduces the effect of noisy GPS (bumpy ground or bouncy implements).
Preferably use 5Hz, as it will allow us to better compensate for noisy data.
Surveying FAQ
Q: Why are there gaps in the GPS surveyed data? 
A: This can be caused because the GPS has stopped transmitting (check the connection) or it can be that the user has hit “Pause” or “Stop” on the T3RRA Display. Pausing can be used when one needs to stop surveying for a time and then resume from the same point. (i.e., for a lunch break)
Q: Are there any limits on logged data? 
A: We will only record a data point once every 2 meters (6.6 feet). Any data received that’s less than 2m from the last logged point will be averaged into one record.
Q: What do we mean when we say we “average” the collected data into one record?
A: If we receive a GPS read every 50cm, we get 4 GPS reads every 2 meters. We take all of those data points and average their position (latitude and longitude) and their elevation to produce the dropped point. This allows us to compensate for the fact that the surface can be quite rough when surveying.
Q: Why does the logged point always appear about 1m behind the tractor?
A: This is because of the averaging. As we average the position as well as the elevation it will drop ½ the collection distance behind the tractor.

7.9 | Surveying with extra sensors (T3RRA Survey 3 only)
T3RRA Survey 3 allows you to bring data in from additional survey types. When you hit the “start” button to begin surveying, you will be presented with various options. 
Choose the first option (GPS data) if you don’t have anything additional to collect with.
After choosing your sensor, the collected elevation points will be based on the sensor, so you get a color gradient showing the collected sensor data. The “Current” in the top left of the screen will also show your current sensor value.
The GPS screen will allow you to debug the sensor data
After you’ve selected your sensor, surveying works the same as for the other tools, so read on to learn more about the available options to you.
How to export/view surveyed data
To export all the data gathered in the survey, go out to the wizard step and go to the final step “Export”. Currently, “CSV” and “PCT AgCloud” exports will allow the sensor data to be retrieved.

8 | Surfacing

8.1 | Surfacing
"Surfacing" is a term used to describe the process of creating a continuous map (i.e., a “surface”) from all the discrete elevation data points collected in the 'Collect' wizard step. 
This is done so that every location in the field (or work area) has an elevation point associated with it, not just the places where GPS data was physically collected. The software estimates values in all the blank areas between the survey dots. 
For every blank position on the map it looks a set distance in every direction to find actual surveyed points. This distance is called the ‘Search radius’. Once it finds enough points it will estimate the blank location based on these points.
Upon exiting the 'Collect' step, T3RRA will attempt to automatically calculate the best search radius and create a surface from the collected data. If you wish to view the surfaced data before going to the ‘Design’ wizard step, pressing the 'Surface' wizard button (at screen bottom) will allow you to both view it and make manual changes (if it does not match your expectations). 
NOTE: If you make a change to the collected elevation points (for example: by deleting a drain) you should re-run the surfacing step.

8.2 | Setting the Search Radius Manually
If the automatically generated search radius does not achieve what you expect it is possible to manually adjust the search radius in the bottom left corner of the surfacing page. There are a few things to take into account when manually adjusting the search radius.
When converting discrete elevation points into a continuous surface, a ‘Search radius’ is required. To estimate the elevation at any point on the surface which was not directly measured, we look at the surrounding measured points. The distance the surfacing algorithm will look for surrounding points is determined by the search radius.
Gaps will appear on the surface if the search radius is smaller than required. There is normally no visible effect on the resultant surface if the search radius is larger than required (although the surfacing will take longer to complete).  In some instances surface artifacts will occur where the surface bridges across sections of the field where you would not expect it to. Examples might be a pond in a field, or the inside corner of an “L” shaped field. You can sometimes remove these areas by choosing a smaller search radius. Normally the effect of these artifacts is not great, although they can have impacts on your area and dirt volume records.
In general, a search radius should be about 2 times the swath width at which the data was collected. This sizing should ensure that the time it takes to apply the surface is still short but that as much data as possible is used to generate a representative map.

8.3 | Inline Offset
'Inline Offset', also known as 'Fix Lag', is a surfacing tool that assists in making corrections to elevation data that is imported from other sources.
To access this tool press the ‘Fix Lag’ button located at the left end of the tools at the bottom of the screen. Pressing this button will open a pop-up window that will provide you with the options to correct elevation alignment. 
Video: Watch the Inline Offset video on YouTube.
When correcting elevation data adjustments will be updated in real time on the map. 
This will help to make sure that the changes you are making are correct before accepting them. 
There are 2 settings that control the correction of elevation data. 
'Shift distance' moves the data points along the recorded path and can only adjust data to a maximum distance of 30m/100ft. The distance can be manually set or adjusted using the slider.
'Pass Separation' is how far must be between any point and the next point along before it is considered to be a new segment. There is no limit to this distance.
When making changes to the data in the inline offset window they will be reflected on the surface on the map - Check that your change has the desired effect before accepting.

8.4 | Surfacing a Survey also creates a design
This is a concept that can be confusing at first. When you surface a set of collected survey points you create a terrain model of the original elevation in the field. This is expected. But T3RRA software also automatically creates a design surface for you as well. This design surface is an exact duplicate of the original elevation surface.
Because T3RRA software allows you to create design surfaces in separate regions of a field, and also create design surfaces based on existing design surfaces, it makes sense to always have a base layer to work off. And this base layer is an exact duplicate of the original surface.
A side effect of this automatic creation of design layers is that you can go straight to implementation after surfacing even if you have not specifically created a design (surfacing is normally automatic, so really you can usually skip directly to implementing directly after collecting!).  A design surface does exist, it’s just that the cut/fill map is made up of 0 values for the whole field.

8.5 | Survey point edit controls
During surveying and surfacing, there are various different ways to edit/remove drain and survey points. Field survey points are small circles, and drain survey points are small squares. The available tools include selecting by Z (indicated with a histogram), select by lasso, select by circle, and select by path:
Most of the “Select by” tools operate in very similar ways. Press down on the screen at a starting position and then drag away from that position to define the extent of the deleted area.
'Select by Z’ allows you select elevation points by their height. After you click on it, you’ll see a graph of all your elevation data. Choose the data you want to select by clicking on the two dashed lines and using them to ‘wrap’ the data you want to select. When you click “Apply” you will be able to see the selection on the map, the selected points will be black.
'Select by circle' will select everything within the circumference of the drawn circle. Press down at the center of the circle and then drag outwards. A blue dotted line will show what you are about to select. The data will be selected when you release your finger.
 
‘Select by lasso’ allows a freeform selection. Click on the map and drag your finger to draw around the data you wish to edit. A blue dotted line will show what you are about to select. The data will be selected when you release your finger.
'Select by path' will delete all consecutive points between point A and point B. Press down on the point where you would like to start, drag the point to an end point. All points that had been collected on that path between these two points will be selected. The data will be selected when you release your finger.
 
While these functions are in use their buttons will display large red circles on them. This indicates that deleting is active. This is to help make sure you do not accidentally select things while trying to perform other tasks such as moving the screen or zooming. Pressing the buttons will cancel selection.
Once selections have been made you have two options.
Deleting Survey/Drain Points
Click on the “Delete” button that appears after selecting points. This will immediately delete the selected points. It’s recommended to save before doing this as the change is permanent.
Changing height of Survey/Drain Points
Click on the “Modify Elevation button” and you will then see the below screen. Enter the amount to change the elevation by and click “Apply”. Your data will immediately be updated and you will be able to see the change on screen. It’s recommended to save before doing this as the change is permanent.

8.6 | Survey Point edit controls
During surveying and surfacing, there are various different ways to edit/remove drain and survey points.
'Select by Z’ allows you select elevation points by their height. After you click on it, you’ll see a graph of all your elevation data. Choose the data you want to select by clicking on the two dashed lines and using them to ‘wrap’ the data you want to select. When you click “Apply” you will be able to see the selection on the map, the selected points will be black.
'Select by circle' will select everything within the circumference of the drawn circle. Press down at the center of the circle and then drag outwards. A blue dotted line will show what you are about to select. The data will be selected when you release your finger. 
 
‘Select by lasso’ allows a freeform selection. Click on the map and drag your finger to draw around the data you wish to edit. A blue dotted line will show what you are about to select. The data will be selected when you release your finger.
'Select by path' will delete all consecutive points between point A and point B. Press down on the point where you would like to start, drag the point to an end point. All points that had been collected on that path between these two points will be selected. The data will be selected when you release your finger.
While these functions are in use their buttons will display large red circles on them. This indicates that deleting is active. This is to help make sure you do not accidentally select things while trying to perform other tasks such as moving the screen or zooming. Pressing the buttons will cancel selection.
Once selections have been made you have two options.
Deleting Survey/Drain Points
Click on the “Delete” button that appears after selecting points. This will immediately delete the selected points. It’s recommended to save before doing this as the change is permanent.
Changing height of Survey/Drain Points
Click on the “Modify Elevation button” and you will then see the below screen. Enter the amount to change the elevation by and click “Apply”. Your data will immediately be updated and you will be able to see the change on screen. It’s recommended to save before doing this as the change is permanent.

9 | Design

9.1 | Design
Measure twice, cut once. 
It’s an old maxim but a good one. You can do as many designs as you want in T3RRA software before you ever put your tractor into gear. Use our 3D visualization and rainfall simulation tools to carefully examine the effect of any design. Evaluate the volumes of dirt being predicted and ensure that they are within expectations. Catching a design error in the software is much less painful than having to redo many hours of dirt moving.
Remember that computers are fallible. Never blindly follow a design you are given. Critically assess whether the computer output matches what is happening in the real world. It is not a given that it will!
Try to start small with simple designs and little fields. Mistakes, and the lessons learned from them, build your experience and capability - but it is far better to do your learning on small jobs!
If you are in doubt, please seek the advice of a professional irrigation designer or engineer. 
The design step is not compulsory and can be skipped if desired. HOWEVER this is not recommended unless you have a specific task where only a copy of the surveyed data is required.
Design capabilities present in different T3RRA software packages
The ‘Create design’ page is presented to you when you advance to the ‘Design’ wizard step. The tools you will see differ based on the specific T3RRA software you are using. This is because each package is aimed at a certain user type and market segment.
A surfaced elevation map is the starting point for creating a new field design. Determining an optimal terrain design is very specific to the conditions that exist on an individual farm. Cropping practices, existing topography, soil types, costs, available machinery, and many other factors apply. Even if you are not intending to do full field land forming (such as is the case when only creating ditches) we still see great value in fully surveying a field. All of our packages allow you the capability of doing this. All of our design tools show you the surface in 3D and can run a rainfall simulation on it. 
In general, the design aims of each package are explained over the next few pages:
T3RRA Cutta 3 provides tools for GPS based land-forming, ditching, and levee creation.
In order to provide solutions that are as broadly applicable as possible T3RRA Cutta includes a variety of design  methods:
Single or dual best-fit planes
Multi-fit optimization
Smoothing
Offsetting
Drain profile and cross section design
Automated drain path creation
Pattern drain design
Levees
NOTE: A powerful capability of T3RRA Cutta is the ability to “chain” designs together. As well as performing designs on the original field surface, you can also perform designs on an existing design. For instance, after performing a multi-fit design, you can then go and use the 'Smoothing' tool to smooth the multi-fit design. Use this capability methodically and with care - it is easy to get confused!
T3RRA Ditch 3 provides tools for ditching and levee work
Drain profile and cross section design
Automated drain path creation
Pattern drain design
Levees (including regions)
Manual drain design
T3RRA Plane 3 provides tools for laser based levelling and ditches
T3RRA Plane 3 can’t do non-linear surface designs. But we wanted to make sure that it can do anything you can do with a laser level. 
Single or dual best-fit planes
Linear Drain profile and cross section design
Design icons.
T3RRA software attempts to divide design functionality into discrete tools.  
Select Best-fit, Multi-fit, Smooth & Offset to design a field surface area. 
Select Auto-Drains or Pattern Drains to place drain paths on the surface. 
Select Drain design to design the profile and cross section of drains.
Select Levees to add levees to the surface. 
NOTE: If you have a drain/field combination to design, always design the field first and the drain second.

9.2 | Rainfall Simulator
One of the many unique features of the T3RRA product suite is our inclusion of a rainfall simulation tool. This allows a very visual and easily relatable analysis of how a field surface affects water runoff and ponding.
It should first be used after a survey and prior to any design being placed on the field. The intent of this is twofold:
To verify that the created surface does in fact truly represent the field. By looking at the water flow, a person familiar with the field will usually be able to say “Yes, that is the normal pattern of water runoff I would see”. In this case the operator can be confident that the survey has created an accurate model of the field. On the other hand, if the simulation produces results that are not expected it may be wise to critically revisit the survey and perhaps collect more data.
To compare the design with the original surface. It is expected that the design will result in a pattern of drainage different to the original. Analyzing the design will quickly tell you if the new surface is going to have the effect on drainage that you expect.
The rainfall simulator cannot tell you how long a field will take to drain. There are simply too many variables, such as the soil type, the soil moisture level and the soil depth before reaching hardpan. Such a calculation is beyond the scope of this software. It can however provide you with an indication of how much faster one design will be over another. You can do this by comparing the iteration counter value of two different designs at a given drainage % value. Even so, be aware that the timing information of the simulation is qualitative in nature, not quantitative.
Video: Watch the Rainfall Simulator video on YouTube.
Alternate between design surface and original surface to view changes in water flow.
Counter is used for comparing drainage time differences between design and original surfaces.
View simulation in 2D or 3D.

9.3 | Regions
To create regions, press the ‘Regions’ button (regions are not available in drain related functions).
The ‘Regions’ tool is used to split a field into multiple workable areas. Different design options can be applied to multiple different regions. For example, you can apply different primary and secondary slopes, or different levee designs in each region.
NOTE: It ispossible to create different design types in different regions. You can have a best-fit plane in one region, and a multi-fit surface in another, for instance.
Video: Watch the Regions video on YouTube.
Regions are created by moving a splitting line across two edges of an existing region, or whole field if no regions exist. The split line is set by moving Point A and Point B into position. The line can be positioned by pressing the up, down, left, or right arrow buttons or moving the points directly using the touchscreen. The split lines straight, but by using the white nodes on the line or merging regions it is possible to achieve region boundaries that are not straight.
 
The 'Split' button confirms the “split” on the selected area.
The 'Merge' button will merge regions selected in the list into one region.
The ‘Hide’ button will delete whatever design exists with the selected region(s). At this point the region will not exist as a separate area that can accept designs. It can still have full-field designs applied to it.
The ‘Restore’ button will restore all deleted regions.
To create non-linear split lines first create multiple splits that intersect, and then merge the regions that are not wanted. See below for an example.
Press the 'Back to Design' button when you have finished adding your regions. 
In certain design functions (multi-fit, best-fit, smoothing, and levees) different regions can be selected from a drop down menu allowing you to make design changes to only the selected region.
Choose to apply your design to the original elevation surface or to the design surface.

9.4 | Earthworks information
Press the 'i' button to view earthwork details.
Note: pressing within the ‘Info’ text box will expand the view to full screen.
Each region will have its own set of  earthworks details and cut/fill summary.
Press the 'Records' button (shown as a printer) to save design details (in PDF format) to a folder for record keeping and documentation purposes.
Press the 'Activity Log' button (shown as a clipboard) to view the activity that a file has undergone. This includes things like file save times and when/what design functions have been applied to a file.
Video: Watch the Earthworks information video on YouTube.
Notes on printing records
The ‘Records’ feature in T3RRA software creates a PDF document and saves it to the hard drive. This document is meant to give an overview of the operation being performed by the software. It is suitable for record keeping purposes, or for supplying to field managers or clients.
It includes the following:
Map of the original surface
Map of the design surface
Map of Cut and Fill areas
Statistics relating to the earthworks
The maps created in the report will include a grid overlay showing data values.
Notes on the Activity Log
The ‘Activity Log’ is designed to provide a history of the user actions that were performed in a project. It keeps a sequential history of the design actions that have 
been performed. This is helpful in understanding what methods were used in order to go from the original design surface to the final design surface. Where possible a record of slopes, directions, and design tools utilized are kept. As we allow designs to be performed on existing designs and differently in different regions, the steps and actions taken to go from the original surface to the final design surface can be quite complicated. 
The ‘Activity Log’ also keeps a record of the results of a design action (in the form of the resulting dirt balance statistics).
If the user is in doubt about steps taken or parameters used, they can refer back to this log. The log entries include a date and time in order to remove confusion about when the actions were performed.
The log can also be used to compare two or more design options. Because the results of each design operation are kept in the log it can be easier to simply compare them there rather than trying to remember them, or write down the results.
If you want to save or email the log you can copy it into the clipboard using the ‘Copy’ button. Then paste it into any other application.

9.5 | Calculator
In some tools that require a value to be input a calculator will be available.
The purpose of the calculator is to take some of the stress away from creating field and drain designs.
In addition to being able to calculate, the calculator comes with a function to add quick values.
These are helpful if you are not wanting to find the exact value and just want to get moving as quickly as possible.

9.6 | Best-fit Design
 Select the 'Best-fit' button to create a plane of best fit for a field.
Video: Watch the Best-fit Design video on YouTube.
A Best-fit design provides a single plane that most accurately fits the existing topography. Using a Best-fit plane ensures that you move the least amount of dirt possible to create a single plane for a field. Note that this can still result in large amounts of dirt being moved.
Tip: Dividing the field into regions, then fitting single planes to each region can help to decrease dirt volumes.
Enter design details to create a plane, or instruct the T3RRA software to auto-calculate your design details.
Setting slope parameters
The software will try to find the most appropriate line of best fit, however the primary and secondary slopes can also be manually set.
(It is recommended that only users with a good understanding of Laser Plane systems use manual settings) 
To manually set the primary slope direction check the box labeled 'Manually set primary slope direction'. 
When in doubt, consult an irrigation engineer. 
Cut/fill ratio, Max cut depth, & Import can be set in 2 locations. The defaults that will be applied to new projects can be set in the Project tab of settings (see section B) or in the lower left corner of the Best-Fit (and Multi-Fit) page.
The 'Cut/fill ratio' is determined by the type of material being moved and how much of it will “settle” or “shrink” once compacted. This value depends on soil characteristics.
Enter a 'Max cut' for the maximum allowed cut depth. The following warning will appear to notify you if any points on the map exceed the max cut depth. adjustments may be required.
 
The 'Import' section is used when you need to bring in dirt from a stockpile or export dirt from the field to another area. Change the amount to a negative value for exporting.
Once you are happy with the design follow the steps in the 'completing your design' section.

9.7 | Multi-fit Design
'Multi-fit' creates an optimized non-linear surface with slopes between the entered minimum and maximum. Multi-fit balances the dirt down the field in the direction you specify. The balancing occurs within strips, and is great for working within rows and moving minimal dirt.
Watch the Multi-fit Design video on YouTube
 
A Multi-Fit design allows the slopes to vary within set tolerances and can greatly reduce the amount of dirt moved.
Dividing the field into regions can further decrease the dirt movement required. Enter details in the below panel and into all fields to generate a Multi-fit plane. 
'Set slope range'
You can use the iGrade™ Plane Calculator to find out the average slope percentage. Alternatively you can find this in T3RRA Cutta by doing a plane of best fit in a direction and then looking at the primary and cross slopes in the plane statistics window. If in doubt, consult an irrigation engineer.
If ‘min%’ or ‘max%’ are left blank the design results will not be desirable.
'Perform cross-strip optimization'
This will attempt to tilt the strip sections to match the actual side slope present. Use in fields that have high side slopes (>2% slope). It is unlikely to provide any benefit in relatively flat fields. This is enabled by default.
'Perform preliminary side slope adjustment'
This will cause an initial side slope adjustment to occur. It will attempt to ensure that the side slope is no greater than the minimum row slope. Use if water might have a tendency to run across rows rather than down the rows.
Cut/fill ratio, Max cut depth, & Import can be set in 2 locations. The defaults that will be applied to new projects can be set in the Settings menu>Project tab or in the lower left corner of the Multi-Fit (and Best-Fit) page.
'Cut/fill ratio' - Determined by the type of material being moved and what percentage of it will “settle” or “shrink” once compacted. T3RRA software does not calculate this value.
'Max cut depth' -  The maximum allowed cut depth. The warning (shown right) will appear to notify you if any points on the map exceed the Max Cut depth.
'Import' - Used when you need to bring in dirt from a stockpile or export dirt from the field to another area. Change the amount to a negative value for exporting.
Once you are happy with the design follow the steps in the 'completing your design' section.

9.8 | Smooth Design
Select the 'Smooth' button to create a more regular surface with fewer and more gradual hummocks and dips. The smoothing strength can be adjusted to produce a stronger or lesser effect as needed.
Watch a Smooth Design video on YouTube
Regular Smoothing
Regular smoothing applies an averaging filter to the surface of the field to remove bumps and dips. 
The ‘Smoothing strength’ slide bar controls how smooth it is by increasing the radius that is used in calculations. The smaller the slider value, the less of an effect the smoothing will have. 
Smoothing can be applied to the whole field, or to individual regions. It can be applied to the original surface, or to an existing design.
Directional Smoothing
'Directional smooth' is a check box just below regular smoothing. 
Directional smoothing causes the smoothing effect to be stronger in a particular direction and weaker in the perpendicular direction.
Enter the primary smoothing direction in the provided text box.
'Smoothing strength in the primary direction' allows you to set the influence radius in that direction.
'Smoothing strength in the secondary direction' controls the influence radius at a 90 degree angle to the primary direction.
Region Blending
Region blending allows you to “feather” the edges of regions to allow for smooth transitions between regions.
'Max Allowable slope' lets you set the maximum steepness that can be used to achieve a region blend.
'Distance from Region line' limits how far into each region the blend can go, in order to help make sure that other design elements are not affected.
NOTE: changes made with region blending may not be obvious in 2D view but can be much more prominent in 3D view, or in the cut/fill map.
Press 'Apply' after parameters are entered in order to see effects.
Once you are happy with the design follow the steps in the 'completing your design' section. Watch another Smooth Design video on YouTube

9.9 | Offset Design
 Select the 'Offset' button to raise or lower the surface height of a field or  region. This can help with:
Importing and exporting dirt
Addition or removal of topsoil
Raising pads
 
Watch the Offset Design video on YouTube
You can either:
Manually enter the desired offset amount (This can also be adjusted in set increments using the arrow buttons). 
Use the calculator to adjust the offset amount. The calculator is useful if you want to offset the surface by a certain volume of imported or exported dirt. 
Formular (Click '?' button to see)
Left over volume = (Cut/Fill ratio * Volumn of cut) + Volume of fill.
Result = (Import + Left over volume) / Selected area
Negative import values are considered exports.
Press 'Apply' (shown as the offset design icon) after parameters are entered.
Once you are happy with the design follow the steps in the 'completing your design' section.

9.10 | Drain Design Tools
When designing drains, there are several aspects that you will find that are across all the different Drain Design tools. 
The most important feature of the drain design tools that you will find will be the cross section found at the bottom of the screen.  The cross section displays all the ups and downs along the drain surface.
The cross section is made up of three different lines. The Red line is the proposed design that you are currently working on. The Blue line is the existing surface that has been surveyed. The Yellow dotted line is the current design surface, when starting a new design this will be overlapped with the Blue line and when a design is applied it will overlap with the Red line UNLESS a second design is being made on top of that. The Green dotted line shows any markers along the drain path.
In the chart, Proposed Design is the straight descending line; Existing Surface is the uneven terrain profile; Current Design Surface is dotted; the vertical Drop box marker is labelled.

9.11 | Auto-Drains Design
You can use Auto-Drains to automatically generate drain paths for wet areas in your field. It will calculate optimal ditch lines to drain depressions. There are two tabs in Auto-Drains:
‘Create’ controls the parameters that must be met before drains are applied to the surface.
‘Edit Drains’ allows for editing of the drain paths.
Create Drains
Watch the Create Drains video on YouTube
‘Line smoothing strength’ - Adjusts how many sharp turns and how smoothly the drain lines flow. The further to the right the slider is the more rounded the lines will be (with decreased sharp turns).
‘Surface smooth strength’ - Adjusts the surface by applying an averaging filter to the surface of the field to remove bumps and dips without creating a full field earthwork design.
'Min. drain length' - Sets the minimum length a drain must be to be displayed on the surface.
‘Min. depression area' - Sets the minimum surface area a depression must cover before T3RRA software will consider draining it.
'Min. depression volume' - Sets a minimum volume for a depression before a drain will be implemented.
(A depression will only be drained if it meets all of the minimum length, area, and volume criteria.)
‘View Depressions’ - All depressions will be made visible (including those that did not meet above requirements).
‘Add Stop Line’ - Creates a line on the screen with red anchors at each end. Drain lines will not cross this line. 
To confirm the placement, press the ‘Lock Stop Lines’ button. Pressing the white anchor in the centre of the lines will create another red anchor so that lines can be adjusted. Additional stop lines can be added by pressing the ‘Add Stop Line’ button again.
Edit Drains
The ‘Existing Drains’ list will show all drains in the current project.
Tapping on any of the drains in the list will select or unselect it. Multiple drains can be selected at once.
‘Delete’ will delete all of the selected drains.
‘Delete All’  deletes all drains in the list (even if they have not been selected).
‘Move Lines’ will allow all the drain lines on the surface to be edited(shown in bottom image).
Drain lines will have blue dots along them to indicate they can be moved to adjust the drain path.
Always start at the origin point (which can also be moved) and move downhill when moving drain lines. 
The drain lines will automatically adjust their paths according to your changes to ensure they flow off the edge of the surface.
Press 'Save Changes'  to keep changes or ‘Discard Changes’ to revert to the original paths.
NOTE: If you make an adjustment on a drain line and make a second adjustment closer to the origin point the first adjustment will revert to the line's original state. Auto-drains ALWAYS flow downhill from the point of the last change.
Once you are happy with the drains go back to the wizard page and use the ‘Drain Design’ function  to set their profiles and cross sections.
Watch the Edit Drains video on YouTube

9.12 | Pattern Drain Design
This design tool allows for simple design of many parallel drains at once. 
Watch the Pattern Drain Design video on YouTube
The pattern drain window allows you to select specific drains to delete.
The 'Delete' and 'Clear All' buttons allow you to either delete selected drains or all pattern drains.
'Drain length' can either be set here or by moving the red circle on the design map.
'Drain Heading' is the direction that the drains run (represented as degrees).
‘Padlock’ button changes the behaviour of the copied drains in relation to the original.
locked - This locks ‘Drain Heading’ to ‘Offset Direction’ so if either are adjusted the other will change to match.
Unlocked - ‘Drain Heading’ and ‘Offset Direction’ can be set independently of each other.
'Offset Direction' sets the direction in which copy drains will be created from the original.
'Drain Count' is the number of drain copies you want to add (not including the original drain).
'Drain Offset (Parallel)' is the distance between each line of the copies. (if the padlock is unlocked this will not show in the example until it is manually updated.)
‘Drain Offset (Origin)’ is the set distance between the origin point of each copy.
Press 'Apply' (shown as the pattern drain icon) after parameters are entered.
Once you are happy with the drain paths use the ‘Drain Design’ function to design the profile and cross section of the drains.

9.13 | Drain Design
Drain paths can be created by:
Surveying them in the 'Collection' wizard step
Importing them
Using the Auto drains tool
Using thePattern drains tool
Drain Design allows slope profile and cross section design choices before “burning” (embedding) drains into the map for implementation.
NOTE: If a surface & drain exist, the surface should be designed first & the drain second. If you need to edit drain elevation data you can return to the 'Collect' wizard step to edit the drain line. However you will lose current project designs.
Select a drain and the depth/elevation profile of the drain will show in the plot at bottom right (this chart may need to be dragged up into view).  Use the 'AB Reverse' button to make sure your drain is falling from left to right in the profile chart, this will make sure that slope values are all positive and make adjustments a lot easier.
Drain paths can be changed into roads by selecting the checkbox. By selecting ‘Road’ the drain design will be inverted.
NOTE: The positioning/layout of drain paths is not considered part of 'Drain Design'. They can be adjusted in the surfacing step for driven drains or in auto drains/pattern drains.
When applying drain designs there are 3 different modes that adjust the path of the drain which are Linear fit, Best fit and Multi fit.
Watch Drain Design video 1 on YouTube
Linear fit
Creates a single straight plane along the drain path. 
'Slope'- is the gradient at which the drain is installed to ensure that water flows in the direction you want.
'Offset'- allows for vertical offsetting of the drain. Setting a positive value will lift the offset creating a fill effect along the entire drain, while a negative value in the offset will lower the design height creating a deeper cut drain.
Best fit
Adjusts the slope to try and follow the natural curve of the field. Similar to multi-fit field design. 
NOTE: Best-fit in drains is equivalent to Multi-fit in full field design. This incongruity comes from a desire to try and match the naming conventions of the John Deere SWP+ product (which is superseded by T3RRA Cutta and T3RRA Ditch).
‘Min. Slope’- The lowest gradient of slope you will accept in the drain. 
‘Max. Slope’- The highest gradient slope you will accept in the drain
‘Min. Cut’- ensures the design will consistently cut at least this amount.
‘Max. Cut’ sets the maximum depth that the design will cut to and ensures that it never exceeds this point.
Multi fit
Applies both cut and fill, and can be used to remove points of erosion and build up that would cause issues. Best used when maintaining existing drains.
‘Min. Slope’-  The minimum allowable gradient of the slope.
‘Max. Slope’- The maximum allowable gradient of the slope.
‘Start Elevation’- The desired elevation point at which the design will begin (at point A). Set to be greater than, equal to, or less than the set value adjusting the start elevation value of the design to be no higher or lower than the set value 
‘End Elevation’- The desired elevation of the final point on the design also referred to as (point B). Set to be greater than, equal to, or less than the set value  to ensure that the final elevation of the design is not higher or lower than the set value.
NOTE: Multi fit tries to balance the cuts and fills using the start and end elevations. If the design parameters won’t work you will see the message: “Model is too constrained” .
Watch Drain Design video 2 on YouTube
General settings
These settings are present in all drain design modes.
‘Cut/Fill ratio’ - please refer to definitions in appendix. The following settings and buttons are all constant between all three modes in Drain Design.
'Copy Settings To All' - copy the settings of the currently selected drain to all other drains present in the project. If all drains are likely to require similar parameters this can be a big time saver.
'Backslope' (batter) is the gradient of the drain walls. A higher backslope value means a sharper drop into the drain. (If no backslope is desired enter 0 as the value.) If you wish to make a road switch the selected Road/Drain option (below Drain Bottom Width). 
‘Lock Backslope’ is mainly intended to be used when working with drain lines - not full surfaces. Will cause the surface to be ignored and the backslopes will be created to their maximum extent.  Note: that the drain bottom will always be burnt in, regardless of the surface elevation. I.e., if you offset a drain up 5m, you would always have a drain bottom burnt in, regardless of if lock backslope is on or off
'Drain Bottom Width' allows you to control how wide the bottom of the drain is. The drain bottom is always horizontal. If you want a drain bottom with a defined non-zero cross slope you should manually set the cross slope control on your implement in the ‘Implementation’ stage of operation.
'Cut/fill ratio' allows you to compensate for soil compaction characteristics.
'Apply All' allows you to apply all the drains in the field, not just the drain that is currently selected.
The 'AB' button reverses the drain direction. It effectively reverses the direction calculations are performed on the drain.
Choosing to apply ‘on elevation’ or ‘on design’ chooses the elevation profile that is used to calculate the designed surface. For example, one drain requires a different design than the others present, you will apply the design ‘on elevation’ to All then select the drain from the drop down and apply a different design ‘on design’ to that drain alone.
NOTE: choosing to design on a design will continue to lower the surface of the drain.
The swap ‘A-B’ button reverses the profile as it is displayed in the profile view. This also affects how the software designs the profile as the software will always try to slope the design from left to right.
Press 'Apply All'  (the image of 3 cogs) to apply all drains at once
Press 'Apply'  (the image of 1 cog) to apply only the currently selected drain.
After editing your drains in the surveying step, return to create a new drain design in the 'Design' wizard step. If a surface and drain exist, the surface should be designed first and the drain second.
Watch Drain Design video 3 on YouTube
After designing the drain and applying it, it is “burned” (embedded) into the field surface model. At this point you can begin implementing in the same way you would a normal field design. If you are using a constant depth drain cutting implement you may not be interested in the depth profile. You may want to only rely on the paths for guidance and not elevation control. In this case there is no need to create the drain profile (unless you want to look at the effects of the drains in the rainfall simulation).
Option: Use the 'Export' button on the wizard screen to export the drain paths to an RCD folder structure (JD Guidance lines). You can export ditch track guidance lines that will steer your tractor on exactly the right path to accurately and efficiently remove your wet areas (John Deere AutoTrac™ required). 
Once you are happy with the design follow the steps in the 'completing your design' section.

9.14 | Levee Design
'Levees' allows you to create repeating or singular levees at set elevations.
Levees can be added at set intervals.
Levees can be smoothed.
Levees can be selectively deleted.
Levees can be applied selectively to field regions.
Levees can be exported as guidance curves for use with John Deere AutoTrac™.
Levee Creation Parameters
'Start Elevation' will be populated automatically. You can also choose the ‘Start Elevation’ by manually pressing on the ‘Start Elevation’ button and then touching the design map at the location you would like to start the levees from. Press Finish selecting to apply.
'Vertical interval' tells T3RRA Cutta and T3RRA Ditch how much elevation change from the previous levee is needed before adding another levee.
'Min. size' determines the minimum length a levee must be before it is included as a drivable path. Levees that are shorter than this will appear greyed out and not be available as paths.
'Reverse numbering' – By default levees are numbered from highest elevation to lowest, reverse numbering switches it to count up from the lowest elevation.
‘Line smooth levees’ adjusts how many sharp turns and how smoothly the levee lines will be created. The further to the right the slider is the more round the lines will be (with decreased sharp turns).
‘Surface smooth strength’ adjusts the surface by applying an averaging filter to the surface of the field to remove bumps and dips without creating a full field earthwork design.
'Delete a levee' will bring up a window allowing you to enter the number associated with the levees you want to remove.
Like other design tools, Levees allows you to use either the original elevation surface, or a design surface as the basis for the calculations. It may be beneficial to perform a landforming operation on this field prior to putting in levees and then base the levees off the design surface. 
Even if you are not performing a landforming operation it can sometimes be useful to perform a smoothing design on the surface first before attempting to lay out levees (ie, to work around poor data). 
Press 'Apply' (shown as the levees icon) after parameters are entered.
Levees can be applied separately to individual regions. It may be advantageous to do this if you have differently spaced levees in different sections of a field. 
NOTE: Levees can be added to each region individually.
Once you have finished designing your levees and are happy with them there are two options available:
export levee paths as guidance lines.
begin implementation.
Exporting will allow the lines to be saved as guidance curves that can be loaded to John Deere’s guidance system.
 
Select the Export button on the main design page to save as guidance curves (John Deere AutoTrac™ required).
If you want to continue and manually implement the levee paths or just display current position on the map while pulling levees, you can follow the instructions to begin implementation on the following page.
Watch the Levee Design video on YouTube

9.16 | Completing your design
Once satisfied with your design surface and/or drain.
 1. Select the 'Return' button. (Top right corner)
 2. Select 'Yes' to keep the design surface.
 3. Select the 'Save proj.' button to save the T3RRA project.
Once you have finished making all your design changes, move onto step 4.
 4. Select the 'Apply' button and follow on screen steps to begin implementing your design.

9.15 | Exporting Guidance lines from T3RRA and importing into AutoTrac
Remember that guidance lines are only available for Drains and Levees.
Should you wish to export guidance lines from T3RRA software for use with AutoTrac™ be sure to follow the following steps to be sure that the process is successful.
Exporting begins by pressing the export button next to the information that you want to export that appears once that data is present at the bottom on the ‘Design” home screen.
How to export guidance lines from T3RRA
A window should appear similar to the image to the right when you select ‘Export’.
Select curve type.
Set the display to the model number of the John Deere display you will be using.
Input project information into client, farm, field and profile.
Press “Save” and a file with your guidance lines will be saved in the set location.
Press “Upload” and a file will be uploaded to JDOC where it can be assigned to equipment.
How to transfer guidance lines to a John Deere display
(Instructions given are for the GS3 2630 Display, steps for other displays may vary: refer to the appropriate display manual)
Insert USB with guidance lines saved on it into John Deere Greenstar display. (The display will automatically detect the USB and display the available options.)
Select “Import Guidance Lines” which should be the bottom option.
Select the desired profile and press “Begin Transfer”.
 
On this screen select which client, farm, field and tracking option of the file you want to import and press “Accept”. (The tracking option should be set to adaptive curves.
Make sure the correct line/s you want to import are ticked and press “Accept”.
A loading bar should appear, if everything has been successful the Data Transfer Complete screen should appear and you will be able to press “Accept”.
Your guidance lines have been imported to your John Deere Greenstar display and are now ready to be used with Autotrac™.

9.17 | Terrace Design
'Terraces' allows you to create Guidance curves to mark terraces for erosion control.
When you first enter the terraces tool, a start line is displayed on the map. This is where your terraces will start from. There are a few parameters for terraces:
‘Bank grade’ allows you to control the slope of the terraces. This will affect how quickly water flows down each terrace.
‘Direction’ controls how terraces flow from the start line. To the left, right or to the left and right (both) of the start line. If you want the terraces to flow towards the start line, make the bank grade negative (e.g. 0.2% to -0.2%).
‘Spacing’ controls whether the starting positions of the terraces are controlled by Vertical distance (elevation drop) or Horizontal distance (distance travelled along the start line). Each time a terrace is added (with the [Add Terrace] button in the lower right of the design pane), it updates the ‘Next’ distance on the right.
Each terrace added is listed in the center. In the list, you can change each terrace’s start distance, or delete it. It also shows you how far the terrace extends.
‘Smoothness’ controls how much the surface irregularities are smoothed out. If your terrace lines are too jagged, you may increase this slider. Note, however, that high smoothing will lead the terraces to not follow the ‘Bank grade’ as closely. This may lead to wet spots and/or require earth moving to ensure drainage.
‘Add Stop Line’ adds a new black line to the map with large red circles at each end. Position one or more stop lines using the red circles to terminate terrace lines at the right location (e.g. a waterway).
Once you’ve created terraces with one start line (also called a ‘set’), you may use the smaller Plus button at the top to add a new start line. You can add as many start lines as desired. To switch between start lines, use the ‘Set’ drop down, or simply tap on one of its purple circles on the map. If you want to remove a start line (including the full terrace set), select it and click the delete button at the top.
Once you’re done creating and laying out the terraces, you may export them as guidance lines, etc.

10 | Implementation Screen

10.1 | The Implementation Screen
When you begin implementation of your design, the display will show a cut/fill map as well as tools to assist in the implementation of the design.
 
Screen features of interest include include:
Setting Zero button.
Cross-slope nudge control buttons.
Vertical blade shift control buttons.
Cut/Fill Information & horizontal colour bar.
Progress Indicator.
On-Grade Indicator.
Blade and Tractor Indicators.
Map display.
Drain profile and cross section.

11 | Implementing

11.1 | Understanding how "As-applied" works
Earthmoving has three states:
What you started with.
What you intended to do.
What you actually did.
The original field surface is your starting point; the intended result is a field surface that matches your design. An “As-applied” (or “As-built”) map records what you actually did.
The “As-applied” map continually records both completed work and work still to be done. At the start of a job, no work has been done, so the map is exactly the same as the original surface. At the end, the field surface will match the design surface, and the “As-applied” map should match the design map. During the job, both the map and the actual field surface will be somewhere between the original and design surfaces.
The software constantly tracks the blade and updates the “As-applied” map as cuts and fills occur. Initially, it knows only that the field matches the original surface map. When the blade goes below that surface, the software records a cut and updates the “As-applied” map, which then differs from the original surface map. As the blade cuts progressively lower, the map continues to update.
Cut measurements tend to be quite accurate: when the blade goes below a previous cut, the new cut level must be the new true earth surface. Fill measurements are more difficult. A blade above the surface does not necessarily mean that dirt is leaving the scraper pan; the implement may simply be travelling between locations. The software accounts for whether the design calls for a cut or fill and for the blade’s position relative to the design height, but fill measurements will not be perfect.
T3RRA software tracks activity over time, continuously surveying the current state of the job surface.
Important: T3RRA software cannot know what other equipment is doing. If another machine operates in the same work area as you, your “As-applied” map will not be accurate. You can track only your own activities.
Important: T3RRA software cannot know what work was done before you arrived. If the original surface map does not represent the terrain on arrival because another operator has already completed part of the job, the “As-applied” map will not be accurate. To make it accurate, drive over the entire surface again to calibrate the as-applied map. It only knows what it has surveyed.

11.2 | Understanding the relationship between the "As-applied" surface and the Dynamic Blade Limit
The Dynamic Blade Limit depends entirely on “As-applied” functionality. If “As-applied” is not activated or is not working properly, the blade limit will not work. To distinguish this from “Static Blade Limit”, see that section in the Limits Tab.
GPS tells T3RRA software where the cutting edge currently is, and the software also knows the original surface. With “As-applied” functionality turned on, it tracks changes to the current (“As-applied”) surface, so it knows the actual surface height wherever you are in the field. It uses this information to limit the cutting edge’s target elevation to a certain amount below or above the “As-applied” surface.
If T3RRA software loses track of the current surface, the Blade Limit will no longer work. For example, on an untouched part of a field requiring 6 inches of cut, a 2 inch blade limit means you would expect 3 passes to reach final grade. If another operator has already removed the top 4 inches, you may expect to finish in one pass. However, T3RRA software does not know that those top 4 inches are gone. On your first pass, the blade limit will keep the cutting edge two inches above the current surface; on the second pass, it will only skim the surface. The blade will enter the ground only on the 3rd pass.
T3RRA software surveys as it goes, tracking blade heights to determine the surface. Any change to the surface since the software last surveyed it will cause Blade Limit errors. Blade Limit guides the blade relative to where it thinks the dirt surface is, not where it actually is. As long as you alone change the field, those positions will be the same. If someone else makes changes, that relationship cannot be relied on.
Do NOT expect Dynamic Blade Limit to work properly if anyone other than you is working in a field OR if anyone else has worked on the job since the original surface was surveyed.

12 | Export