Calibrate Terrain Compensation Module (TCM)

PC19992-UN-04SEP14

PC19993-UN-03SEP14

A - TCM Toggle Button

B - Skip

C - Overlap

Select terrain compensation module (TCM) toggle button (A) to turn TCM on and off. When TCM is turned off, StarFire™ global positioning system (GPS) message is not corrected for machine dynamics or side slopes. TCM defaults to on when cycling power.

NOTE: TCM must be turned on for AutoTrac™ to activate.

Calibrate TCM so receiver can determine zero degree roll angle and pitch angle.

Before calibrating, ensure machine and implement are in proper working condition and ready for field work. Machine must be ballasted and tires properly inflated. Lower implement as close as possible to working position when calibrating.

Calibrate TCM every time receiver is removed from machine and reattached or if TCM angle in relation to machine has changed. Changes in TCM angle in relation to machine can create an offset and look like a consistent skip (B) or overlap (C) in pass-to-pass operation. Possible causes of this offset could be StarFire™ mounting bracket is slightly offset, machine cab is slightly offset, or uneven tire pressures from one side to other.

To eliminate offset, position machine and calibrate TCM, drive down a pass, turn around, and drive down same pass in opposite direction. If machine does not follow same pass, measure offset distance and enter in implement offset.