Autopilot steering system 4 Vehicle guidance setup
Pre-calibration
1. Carry out pre-calibration on a hard, level surface that is free of obstacles.
2. Keep the tractor speed at approximately 1.6 kph (1 mph) during the test.
3. Calibrate the steering gain after calibrating the steering sensor.
4. Warm up the vehicle. The hydraulic fluid must be at normal operating temperature for
deadzone calibration.
Calibration
WARNING – During this procedure the wheels will move abruptly. To avoid injury, be prepared for vehicle
movements.
Note – To minimize the amount of open area required for completing the calibration, you may
reposition the vehicle between the phases of the test.
During this procedure the wheels will move abruptly. To avoid injury, be prepared for vehicle
movements.
1. Close fields on the display before performing the calibration.
2. Drive the vehicle to a large field that is without hazards or obstructions. The field should have
smooth soil conditions.
3. Run the calibration wizard, reading and following all on-screen instructions and taking note of
all warning messages.
4.
At the Autopilot Proportional Gain Adjustment screen, while moving, turn the wheels to full left
or full right and tap the opposite Test direction steering command.
ll The wheels will automatically turn to the opposing full turn position.
l The Slew and Overshoot percentages will be reported After the test has been completed
for the turn.
5.
After the Slew and Overshoot percentages display on the screen, keep moving and select the
opposing test direction to the one you selected in Step3.
ll The wheels will automatically turn to the opposing full turn position.
l The Slew and Overshoot percentages will be reported after you have completed the turn.
6. After you have run the slew test in both directions, adjust the P Gain (if required) by an
increment of 1 unit in the direction that provides the required vehicle response (higher for a
more reactive system, lower for a less reactive system).
7. Repeat the calibration procedure until the appropriate vehicle response is achieved and then
tap to complete the calibration.
Version 7.0, Revision A CFX-750 Display User Guide 77
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