Trimble TMX-2050 - Page 155

Autopilot system calibration 6 Vehicles
Note – Complete this calibration before you attempt the steering deadzone (Automated steering
deadzone calibration, 156) or roll correction (Roll correction calibration, 162) calibrations.
1. Drive the vehicle to a field with a hard, level surface without obstructions.
2.
At the Vehicle setup panel, select the vehicle you want to work with. See Select a vehicle, 145 for
detailed instructions.
3. Tap Calibrate.
4.
Tap Steering Sensor. The calibration tool displays.
5.
Read the instructions and tap the Next.
6.
Steer straight ahead and drive forward slowly. Maintain a tractor speed above 1.6 kph (1 mph).
Tap Next.
7. Turn the steering wheel all the way to the left and continue moving forward.
a. Note the sensor voltage value.
b. While the steering wheel is at the full left position, tap Next.
8. Turn the steering wheel all the way to the right.
a. Note the sensor voltage value.
b. While the steering wheel is at the full right position,tap Next.
9. Steer straight ahead and drive for a while to ensure you are traveling straight.
10. Check the value. The center should be approximately 2.5 volts. The calibration process
attempts to map the values for a full left turn, a full right turn and center steering.
a. Note the sensor voltage value.
b.
When the vehicle is going straight, press Next.
11. Turn the steering wheel to full left and full right.
a. Check that the voltage value and degree value does not stop changing before the steering
articulation hits the end stops.
b. Ensure that the full left turn and the full right turn are at approximately the same value.
c.
If the values are not approximately symmetrical, tap to discard the calibration and
repeat step 6 through step 9. The steering sensor may require adjustment or replacement
if:
The value... Outcome
For sensor volt Not symmetrical for full left and full right turns
For degrees Not near 0
For voltage Stops changing before the articulation of the steering is
to the full left or full right position
Version 1.075, Revision C TMX-2050 Display User Guide 155