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GDU 37X Installation Manual – GDU 37X Page 2-1
190-01054-01 Revision B
2 GDU 37X
Figure 2-1. GDU 37X
2.1 Equipment Description
The GDU 37X is not suitable for installation in a type-certificated aircraft.
The GDU 37X provides a central display and user interface for the GDU. The display is mounted flush to
the aircraft instrument panel using four #6 screws. The GDU 37X is available in two models, GDU 370
and GDU 375. The GDU 370 is a Garmin Display Unit with a GPS receiver. The GDU 375 provides
these same features plus an XM receiver.
2.1.1 Navigation Functions
• Display of position and ground speed
• Display of stored navigation and map databases
• Area navigation functions using the determined position/velocity and stored navigation data
• Advisory approach navigation functions and associated databases
2.1.2 Interface Summary
The GDU 37X uses RS-232 communications interfaces. The GDU 37X communicates with the
following Garmin LRUs:
• SL30 Nav/Comm Transceiver
• SL40 Comm Transceiver
• GNS 400/500 Series Units
• GTX 327/330 Transponder