Page 1-2
GMA 1347D Installation Manual
Revision C
190-00303-21
1.2.1 Features Summary
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Logical front panel layout
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LED annunciators indicate selected function
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Five position intercom: pilot and four passengers
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Two stereo headset amplifiers: one for the pilot and one for the passengers
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Two stereo music source inputs
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Two selectable intercom operational modes
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VOX control for mic inputs
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Automatic selection of radio audio source when corresponding mic is selected
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MASQ
TM
Processing
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COM swap function
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TX indication
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SmartMute
TM
marker audio muting
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Speaker output for radios
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Power-off fail safe connection for Pilot PTT, mic and Pilot’s Headset-Left to ON-SIDE COM
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Digital audio interface
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Voice Recorder
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Cockpit Call (-20 only)
1.2.2 Interface Summary
The following is an interface summary for the GMA 1347D. See Section 4 and Appendix B for
connection details.
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3 Transceiver Inputs/Outputs (Figure B-4)
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1 Speaker Output (Figures B-1 and B-2)
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2 Headset Outputs (Figure B-3)
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5 Microphone Inputs (Figure B-3)
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5 Receiver Inputs (Figure B-4)
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4 Unswitched Inputs (Figure B-4)
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6 Digital Audio Inputs (Figure B-5)
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2 Aircraft Power Inputs (Figures B-1 and B-2)
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Discrete Inputs/Outputs (Figure B-6)
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PFD/MFD Reversionary Mode outputs (Figures B-1 and B-2)
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2 RS-232 Inputs/Outputs (Figure B-5)
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Marker Beacon Antenna Input (Figures B-1 and B-2)
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External Marker Beacon Lamp Driver Outputs (Figure B-6)
