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Page 8-8 G3X Installation Manual – Post Installation Checkout and Calibration Procedures
Revision A 190-01115-01
8.3.2 Calibration Procedure B: Pitch/Roll Offset Compensation by Aircraft
Leveling
1. Enter configuration mode by holding down the left-hand softkey while powering on the
GDU 37X (if needed).
2. Use the FMS Joystick to select the GSU Page (if needed).
3. Unlock the GSU Page by pressing softkeys 2, 3, 4 in order (if needed).
4. Ensure that all the required status boxes are checked (Tables 8-2 and 8-3). The GMU 44 and
GSU 73 units must be communicating with the GDU 37X, and the GPS antenna must have
clear view of the sky or a GPS repeater to produce positive status indications.
5. Use the FMS Joystick to select PITCH/ROLL OFFSET.
6. Use the FMS Joystick to highlight the Calibrate button, press the ENT Key.