Accelerometer Calibration - Novatel RTT2211 User Manual

The device starts the accelerometer auto-calibration process immediately after
the device is installed and the vehicle's ignition is turned on.

Accelerometer Calibration

The accelerometer undergoes an automatic calibration sequence on the first drive after any of
the following events:
Device installation
l
Software upgrade
l
Vehicle battery replacement (or recharge if battery was fully discharged)
l
Device auxiliary processor reset
l
Failure to follow the process below could cause an undesired behavior of the
motion feature. Failure to drive straight on level ground during the automatic
calibration may reduce the accuracy of the accelerometer and have an adverse
impact on events triggered by accelerometer readings.
Figure 3-6 Typical OBDII Socket Location
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