Garmin G300 Installation Manual page 64

9.3.2 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 three status boxes indicate a positive state (green check marks). 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.
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G300 Installation Manual – Post Installation Checkout and Calibration Procedures
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