Installation Instructions

190-01007-A3 GTN 6XX/7XX AML STC Installation Manual
Rev. 4 Page 1-7
1.4.4 GMA 35 Interface Summary
A summary of the GMA 35 interfaces is shown in Figure 1-2.
Garmin
GMA 35
Audio Panel
GTN 7XX Control
Head
COM 1
Transceiver
Cockpit Speaker
Unswitched,
Unmuted Audio
Input (x 4)
Marker Beacon
Antenna
RS-232
COM 2
Transceiver
COM 3
Transceiver
NAV 1 Radio
NAV 2 Radio
DME Radio
ADF Radio
Telephone Audio
Pilot/Copilot
Headsets (x 2)
Passenger
Headset (x 4)
Music Input (x 2)
Marker Beacon
Annunciators
Figure 1-2. GMA 35 System Interface Overview
The GMA 35 utilizes RS-232, discrete inputs/outputs, and analog audio inputs/outputs to communicate
with other systems on the aircraft. For more detail, refer to Appendix F.