GPS Port Settings Tab 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 for GPS - Checks the available COM ports and usual baud rates for valid GPS data. Warning/Error Configuration - Settings changed on this page will stay even 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. Primarily used for diagnostics, should support be required. Output Data - Displays the most recent outgoing communications. Primarily used for diagnostics, should support be required. Recent GPS errors - A list of the most recent GPS errors, for review in case they are intermittent. Open Device Manager - Used to investigate COM port issues if required. Connect and Disconnect - Manually start or stop communication with the app controller. NOTE: T3RRA software and iGrade™ must have identical Com port and Baud Rate settings in order to communicate.