Guidance and GNSS Calibration

Note:  The following steps are intended to outline the calibration procedure. Some options shown will be dependent upon settings and options selected.

  1. Open the UTClosed A Universal Terminal (formerly Virtual Terminal) is an electronic display or console capable of interfacing with ECUs on an ISOBUS network. menu of the display or field computer.
  2. During the initial start-up of system, the operator will be presented with the Operator Liability prompt.

    Note:  Refer to the Operator Liability topic for more information.

  3. Select the guidance and steering terminal from the UT menu. The Machine Selection page is displayed.

    Note:  The Slingshot® terminal icon only displays when calibrating the Raven RS1™.

  4. Confirm that the correct ECUClosed Electronic Control Unit will be programmed by selecting the Information icon in the upper, right corner and matching the Hardware Serial Number to the ECU serial number mounted to the machine or implement.

    Note:  If the Machine Home page displays, the ECU is calibrated already for that terminal. Check other terminals for an ECU that has not been calibrated.

  5. The Machine Selection page will be displayed.

    Note:  System information, DTCs, and system test pages may be viewed during the initial calibration. For further information on these settings, review the following topics:

    Note:  The system health test pages provide additional diagnostic capabilities and allow the operator to test function of various machine controls and sensors.

  6. Use the drop-down options to set the Machine Type, Make, and Model.

    Note:  If using preconfigured (e.g. non-generic) tunesets, some machine/implement offset values will be pre-populated on the following pages of the initial calibration wizard. It is recommended to confirm these values on your specific machine and implement for best tuning and performance.

  7. Once the Machine options are set, select the Next page button to proceed with the initial calibration.
  8. On the next page, use the drop-down to select one of the following options for the Autonomy Level drop-down.

    GPS Only

    Stream GNSSClosed Global Navigation Satellite System correction information only. Select this option for guidance only applications or to stream corrections to a separate automated steering system.

    Steering Only

    Use the guidance and automated steering features of the device. Select this option for automated tractor or sprayer steering applications.

    Raven Autonomy™

    Select this option to enable features for autonomous systems such as OMNiDRIVE™ or Raven Cart Automation™.

  9. Select the Next page button to proceed.

    Note:  The following prompt is displayed if the SCUClosed steering control unit software is not compatible with the SGCClosed steering guidance controller.

    Select the Install button to update to the indicated software version. The SCU update must be completed to proceed with the calibration process. Once the update is complete, the system will attempt to detect the steering partner and allow the operator to proceed with the initial calibration process.

  10. The system will attempt to detect a steering partner.

    • If no steering partner is detected, or if steering will not be used in the current application, select the GPS Only Configuration button. In this configuration, auto-steer features will not be available.
    • If a steering partner is detected, select the Next button to calibrate both the GNSS and auto-steering features of the system. Recognized steering partners include:
  11. Enter the Antenna Fore/Aft measurement in the units displayed on the page.

    Note:  The Antenna Fore/Aft position is the measurement between the rear axle of the machine to the middle of the GNSS antenna unit. Enter a negative value if GNSS antenna unit is mounted behind the rear axle.

  12. Select the Next page button.
  13. Enter the Antenna Center offset measurement in the units displayed on the page.

    Note:  The Antenna Center Offset position is measured from the center line of the machine to the center of the GNSS antenna. A negative value should be entered if the GNSS antenna is located to the left of the center line.

  14. Select the Next page button.
  15. Enter the Antenna Height measurement in the units displayed on the page.

    Note:  The Antenna Height is measured from the ground to the center of the GNSS antenna.

  16. Select the Next page button to proceed.
  17. Enter the wheel base measurement in the units displayed on the page.

    Note:  The Wheel Base is the measurement between the center of the front tire to the center of the rear tire on both sides of the machine. Add these measurements together and then divide by two to get the average Wheel Base value.

  18. Select the Next page button.
  19. Select the appropriate GNSS DifferentialClosed Differential Global Positioning System is an enhancement to standard GNSS/GPS messages to provide better position accuracy. Source from the drop-down options list. Available options may include:

    Note:  Depending upon the number of feature unlocks purchased, all options may not be available for selection in the drop-down box. Contact your local Raven dealer to purchase additional unlock codes.

  20. Select the Next page button.
  21. Review the GPS Status Information page.

    Note:  The system must detect a converged GNSS status and display a green shield to successfully complete the terrain compensation calibration procedure.

  22. Select the Next arrow to proceed to the Terrain Compensation Calibration procedure.

Note:  The following steps are intended to outline the calibration procedure. Some options shown will be dependent upon settings and options selected.

  1. Open the UT menu of the display or field computer.
  2. During the initial start-up of system, the operator will be presented with the Operator Liability prompt.

    Note:  Refer to the Operator Liability topic for more information.

  3. Select the guidance and steering terminal from the UT menu. The Machine Selection page is displayed.

    Note:  The Slingshot® terminal icon only displays when calibrating the Raven RS1™.

  4. Confirm that the correct ECU will be programmed by selecting the Information icon in the upper, right corner and matching the Hardware Serial Number to the ECU serial number mounted to the machine or implement.

    Note:  If the Machine Home page displays, the ECU is calibrated already for that terminal. Check other terminals for an ECU that has not been calibrated.

  5. The Machine Selection page will be displayed.

    Note:  System information, DTCs, and system test pages may be viewed during the initial calibration. For further information on these settings, review the following topics:

    Note:  The system health test pages provide additional diagnostic capabilities and allow the operator to test function of various machine controls and sensors.

  6. Use the drop-down options to set the Machine Type.

    • DirecSteer® - Select "Front Steered Tractor" for the Machine Type when steering the machine using a DirecSteer® unit. The Make and Model options must be set to "Generic" when auto-steering with the DirecSteer® electric drive unit.

      Note:  CR7®+ must be using version 23.2.0.68 for use with DirecSteer®. Refer to Field Computer Updates for assistance with checking and updating the Raven field computer or Universal Terminal.

      Note:  If using preconfigured (e.g. non-generic) tunesets, some machine/implement offset values will be pre-populated on the following pages of the initial calibration wizard. It is recommended to confirm these values on your specific machine and implement for best tuning and performance.

  7. Once the Machine options are set, select the Next page button to proceed with the initial calibration.
  8. On the next page, use the drop-down to select one of the following options for the Autonomy Level drop-down.

    GPS Only

    Stream GNSS correction information only. Select this option for guidance only applications or to stream corrections to a separate automated steering system.

    Steering Only

    Use the guidance and automated steering features of the device. Select this option for automated tractor or sprayer steering applications.

  9. Select the Next page button to proceed.

    Note:  The following prompt is displayed if the SCU software is not compatible with the SGC.

    Select the Install button to update to the indicated software version. The SCU update must be completed to proceed with the calibration process. Once the update is complete, the system will attempt to detect the steering partner and allow the operator to proceed with the initial calibration process.

  10. The system will attempt to detect a steering partner.

    • If no steering partner is detected, or if steering will not be used in the current application, select the GPS Only Configuration button. In this configuration, auto-steer features will not be available.
    • If a steering partner is detected, select the Next button to calibrate both the GNSS and auto-steering features of the system.
      • DirecSteer®
  11. Enter the Antenna Fore/Aft measurement in the units displayed on the page.

  12. Select the Next page button.
  13. Enter the Antenna Center offset measurement in the units displayed on the page.

  14. Select the Next page button.
  15. Enter the Antenna Height measurement in the units displayed on the page.

  16. Select the Next page button to proceed.
  17. Enter the wheel base measurement in the units displayed on the page.

    Note:  The Wheel Base is the measurement between the center of the front tire to the center of the rear tire on both sides of the machine. Add these measurements together and then divide by two to get the average Wheel Base value.

  18. Select the Next page button.
  19. Select the appropriate GNSS Differential Source from the drop-down options list. Available options may include:
    • GLIDE®
    • SBAS
    • GS-Lite
    • Satellite GS or Satellite GS Pro
    • RTK

    Note:  Depending upon the number of feature unlocks purchased, all options may not be available for selection in the drop-down box. Contact your local Raven dealer to purchase additional unlock codes.

  20. Select the Next page button.
  21. Review the GPS Status Information page.

    Note:  The system must detect a converged GNSS status and display a green shield to successfully complete the terrain compensation calibration procedure.

  22. Select the Next arrow to proceed to the Terrain Compensation Calibration procedure.

Last Revised: Sep 2024