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
