CHAPTER 3
20 ROS SmarTrax™ Calibration & Operation Manual
WHEEL ANGLE SENSOR (SPS) CALIBRATION - IF APPLICABLE
IMPORTANT: The range of the SPS/WAS values is limited to 10-1010 to prevent damage to certain types of sensors.
Ensure the sensor is mounting securely to prevent damage during operation. The difference between the
Left and Center values and Center and Right values must exceed 100.
The SPS/WAS calibration is required only if a SPS/WAS is installed in the SmarTrax system. If no SPS/WAS is
detected by SmarTrax, the system calibration wizard will proceed to the next step in the calibration process. If a
SPS/WAS is installed, the following screen will be displayed:
FIGURE 16. SPS/WAS Calibration Screen
1. While driving slowly, turn the steering wheel fully to the left wheel lock.
2. Select Left.
3. Continue driving slowly and straighten the wheel until the machine is driving straight forward.
4. Select Center.
5. Turn the steering wheel fully to the right wheel lock.
6. Select Right.
7. Select Next.
CONFIGURING WHEEL BASE AND ANTENNA OFFSETS
If a generic machine profile was selected during the machine configuration process, the Wheel Base, Antenna
Position, and Antenna Height values must be entered into the SmarTrax system.
IMPORTANT: If a specific machine profile was selected during the machine configuration process, the Wheel base,
Antenna Position, and Antenna Height measurements will be automatically populated in the screen.
However, the antenna mounting position may vary on the machine, so it is important to re-measure the
Antenna Position and Antenna Height to verify that the setting in the Viper 4 is correct. The Wheel Base
value cannot be changed.
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