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GDU 37X Installation Manual – PICP Page 5-1
190-01054-01 Revision B
5. Post-Installation Checkout Procedure
This section contains the post-installation checkout procedures which are recommended to be performed
after installing the GDU 37X. It is assumed that the person performing the post-installation checks is
familiar with the aircraft, has a working knowledge of typical avionics systems, and has experience using
the test equipment defined in this section.
NOTE
It is recommended that the installer read this entire section before beginning the checkout
procedure.
CAUTION
Be sure to check all aircraft control movements before flight is attempted to insure that
the wiring harness does not touch any moving part.
5.1 Required Test Equipment
The following test equipment is required to conduct and complete all post installation checkout
procedures in this section: (All test equipment should have current calibration records)
• Ground power unit capable of supplying 14/28 Vdc power to the aircraft systems and avionics
• Outdoor line-of-sight to GPS satellite signals or GPS indoor repeater
5.2 GDU 37X Test Procedure
Test the GPS Receiver:
1. Power on unit and use the FMS Joystick to select the Info Page.