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Look ahead delay time - In order to control blade height the software must receive an elevation from iGrade™, process that elevation, and then return a control signal to iGrade™. This control loop is quick but the time delay can cause inaccurate implementa...

Settings made in the project tab will not be represented in a project that is open when the settings are changed. Surface Pixel Size - The default pixel size of 2 meters (~6 feet) should be adequate for most purposes. In some situations, it may make sense...

Blade Shift Increment -Used to set the height adjustment value of the up/down elevation adjustments buttons in the implementation wizard step.  NOTE - recommended distance for the blade shift increment would be 0.03 - 0.06 feet (0.4 - 0.8 inches, or 0.01m - 0...

GPS - Displays the COM port that is used to communicate with the GPS. Ensure you have selected the correct port with the drop down menu. Baud (Rate) - The communication speed between the software and GPS (it should match the baud rate of the GPS). Scan...

'Enable GPS data log’  It is highly recommended to keep this enabled. The GPS data log is sent along with error reports to assist in finding a solution. ‘Enable diagnostic data’  It is highly recommended to keep this enabled because the data collected i...

Units: ‘Language’ - Changes the language ‘Length’ - Changes unit of distance measurement. ‘Area’ - Changes unit of area measurement. ‘Volume’ - Changes unit of volume measurement. ‘Estimated Cost’ - Set an estimated cost per volume of dirt moved. ...

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 o...

Both Mark Twain and Will Rogers shared a wise sentiment: “Buy land, they’re not making it anymore”. We can’t help you buy land, and we definitely can’t help you make more of it. What we can do is help you make your current land better.  This manual describes t...

Accurate machine control depends on the performance of the entire landforming system, not just the T3RRA software. T3RRA software works in conjunction with John Deere iGrade™, combining terrain design, guidance and implementation with iGrade's machine-control ...

Starting T3RRA Software On most installations, T3RRA software is configured to start automatically when the tablet PC boots. If the software does not start automatically and you would like this functionality enabled, refer to the accompanying troubleshooting g...

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 W...

T3RRA regularly releases software updates to improve reliability, introduce new features and enhance compatibility with supported hardware. Keeping your software up to date ensures you have access to the latest improvements and bug fixes. Checking for Updates ...

Transitioning from T3RRA Cutta V1 to T3RRA Cutta V2 has been designed to be as straightforward as possible. The familiar wizard-based workflow has been retained, along with the core operating principles used throughout V1. While the user interface has been ref...

T3RRA in-cab software is compatible with any 64-bit Windows 11 PC, including desktop computers, laptops and tablet PCs. While the software can be operated using a keyboard and mouse, it has been designed primarily for use with a touchscreen interface. For most...

John Deere iGrade™ is an integral part of the T3RRA machine-control solution. While T3RRA software provides terrain design, guidance and implementation functionality, John Deere iGrade™ performs the hydraulic machine control required to operate the implement. ...

As-Applied: Represents the current state of the field as work progresses. The As-Applied surface typically transitions from matching the original surface to matching the design surface as earthworks are completed. Also referred to as As-Built. Backslope (Batte...

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 app...

T3RRA software uses the T3RRA Project File (.tci) as its native project format. Data from supported external sources must be imported using the Import function before it can be used within a T3RRA project. T3RRA Design provides additional import and conversion...