4 Vehicle guidance setup Autopilot steering system
Load VDB
Note – Before loading a vehicle database into the CFX-750 display, go to Partners or contact your
local reseller to obtain the most current Trimble VDB files and to determine which vehicle model is
recommended for your installation.
To load a vehicle profile file from the Trimble Vehicle Database file:
1. Copy the vdb file to this location on a USB drive: Root / AgGPS / Autopilot/ VDB.
2. Insert the USB drive into the back port of the CFX-750 display.
3. At the Autopilot Setup screen, tap Load VDB. A number of upload warning messages displays.
4.
Select the appropriate vehicle file for your vehicle based on recommendations from Partners or
your Trimble Reseller and then tap .
A number of upload warning messages displays. The system restarts communication with the
NavController II.
Manual Override
WARNING – Incorrect adjustment of the Manual Override Sensitivity calibration could cause this critical safety
feature to fail, resulting in personal injury or damage to the vehicle. Do not choose a setting that is either too
sensitive or not sensitive enough. It is vital to avoid setting the sensitivity so low that the system will not detect
any steering wheel motion.
Note – The manual override sensitivity calibration is only valid for those platforms employing a
pressure transducer for the manual override function.
It is strongly recommended that you perform this calibration only if it is determined that the default
sensitivity is unacceptable under all operating conditions. The default sensitivity setting provides a
balance between rapid activation of the override function and rejection of steering wheel motion
due to incidental contact (for example, due to travel in a rough field).
Adjust the setting by incrementing the voltage setting up or down in increments of 0.10 V.
Maximum and minimum voltage is established by vehicle and operational parameters.
The Current Sensor Value voltage or sensitivity is displayed along with the Override status that is
based on comparing the setting value to the reported sensor value.When the threshold value is:
l Increased, the manual override function less is sensitive to steering movements.
l Decreased, the manual override function is more sensitive to steering wheel movements and
will disengage Autopilot function sooner.
With the vehicle at a standstill:
1. Turn the steering wheel and notice the effort required to activate the Override status on the
display.
70 CFX-750 Display User Guide Version 7.0, Revision A
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