Page 4-12 GMA 1347D Installation Manual
Revision C 190-00303-21
4.4.9 AUX, DME and ADF Audio
Table 4-19. AUX, DME and ADF Audio Pin Assignments, J3471
Pin Pin Name Description I/O
74 AUX AUDIO IN HI Extra switched audio input In
75 AUX AUDIO IN LO Ground reference for extra switched audio input In
15 DME AUDIO IN HI Distance measuring equipment audio input In
16 DME AUDIO IN LO Ground reference for DME audio input In
35 ADF AUDIO IN HI Automatic direction finder audio input
In
36 ADF AUDIO IN LO
Ground reference for automatic direction finder
audio input
In
4.4.10 Failsafe Audio
Table 4-20. Failsafe Audio Pin Assignments, J3471
Pin Pin Name Description I/O
FAIL SAFE WARN AUDIO IN (-00)
Audio summed to the pilot’s headset
left when power fails on GMA
In
1
FAIL SAFE PILOT SUMMED
AUDIO OUT HI (-20)
Audio summed output when power
fails on GMA
Out
4.4.11 Summed Audio
Table 4-21. Summed Audio Pin Assignments, J3471
Pin Pin Name Description I/O
53 SUMMED AUDIO OUT LO (-20)
Ground Reference for summed
audio output
Out
72 PILOT SUMMED AUDIO OUT HI (-20) Pilot summed audio output Out
73
COPILOT SUMMED AUDIO OUT
HI (-20)
Copilot summed audio output Out
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