Novatel GNSS Receiver and Antenna SMART-AG - Manual (Page 29)

Installation and Setup Chapter 2
SMART-AG User Manual Rev 5 29
The SMART-AG must be mounted with the connector facing the rear of the vehicle, as shown in
Figure 7:
Figure 7: SMART-AG Orientation
2.2.5.2 Height Measurement and Configuration
The height measurement should be made while the vehicle has the correct tire pressure and is parked
on a hard-packed and level surface. The measurement should be made from the ground to the bottom
of the SMART-AG connector. The measurement accuracy should be within 1 to 2 inches (2.5 to 5.0
cm).
Once the measurement has been made (in feet and inches, or metres), refer to Appendix B.5, $PMDT
Configure Tilt Compensation starting on page 76 for instructions on how to set the height in the
SMART-AG. The height must be saved after the height command is sent. This must be done so the
height data is saved between power cycles. Instructions on sending the save command are outlined in
Appendix B.5, $PMDT Configure Tilt Compensation starting on page 76.
Note that changes in tire pressure over time can potentially cause errors in tilt compensation. This is
because the height of vehicle can vary with tire pressure.
The SMART-AG is shipped from the factory with the height set to 0.0 metres.
2.2.5.3 Leveling the Tilt Sensor
The vehicle must be parked on flat ground when the level command is sent to the SMART-AG. Refer
to Appendix B.5, $PMDT Configure Tilt Compensation starting on page 76 for instructions on how to
send the level command.
After the tilt sensor has been leveled, the data must be saved to non-volatile memory using the save
command. Instructions on using the save command are outlined in Appendix B.5, $PMDT Configure
Tilt Compensation starting on page 76.
 The SMART-AG must be rigidly secured to the vehicle to minimize errors due to
vibration and motion.
Route cable
towards rear of
vehicle
Orient towards
front of vehicle