Garmin G3X Installation Manual page 160

9.3.5 Calibration Procedure E: Engine Run-Up Vibration Test
Calibration Procedure E is required for all installations to validate the vibration
characteristics of the installation. Calibration Procedures B through D are not required
prior to this procedure.
Passing the Engine Run-Up Vibration test does not remove the requirement to rigidly
mount the GSU 73 to the aircraft primary structure. The Engine Run-Up Vibration Test
is intended to help discover mounting issues but successful completion of the test does
not validate the mounting of the GSU and GMU, and does not account for all possible
vibration profiles that may be encountered during normal aircraft operation
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 9-2 and 9-3).
5. Use the FMS Joystick to select ENGINE RUN-UP TEST.
Page 9-20
Revision E
NOTE
NOTE
G3X Installation Manual – Post Installation Checkout and Calibration Procedures
190-01115-01