Best Practices When Using Single-3D Guidance

The following best practices are recommended:

  • Check and update cutting edge wear regularly.
  • Maintain the machine in good condition to remove the play in joints that is caused by excessive wear.
  • Ensure that the system has an accurately calculated center of rotation by rotating the machine's cab whenever you move the undercarriage.
  • Ensure that the system has an accurately calculated center of rotation for operations that require high precision guidance, such as Avoidance Zones and Infield Surfaces.
  • Rotate the machine's cab in a smooth and even motion without pausing when the system is calculating the machine's position. For best results, ensure that the machine is on stable ground during the rotation.

UTS

  • Place the UTS on a tripod, free from vibrations caused by passing machinery or the wind.
  • For best accuracy, place the UTS between 15 meters (50 feet) and 200 meters (650 feet), up to a maximum of 300 meters (1000 feet), from the MT9xx target.
  • Set up UTS instruments accurately using a minimum of three survey control points in a good geometric pattern.
  • Optionally, check attachment tip elevation against an independent known elevation before starting work and remove any differences by benching.
  • Ensure that the UTS has a continuous line of sight to the MT9xx target. Check that the line of sight is maintained for all machine positions across the work area.

GNSS

  • Depending on your GNSS Precision Tolerance setting, you may have to rotate the machine's cab through a larger angle of rotation for the system to accurately calculate the center of rotation.

  • Select the GNSS Precision Tolerance suitable for your application from the System Settings menu.

    NOTE – The acceptable precision values are set in the Web Interface.

  • If the distance from the GNSS mast to the center of rotation is less than 1.4 meters (4.6 feet), you may have to rotate the machine’s cab through a larger angle of rotation. The Rotate Body progress bar may not update correctly while rotating.
  • For best accuracy with single GNSS, ask your technician to perform a Mast Measure‑up in the Web Interface using the Total Station method.