Garmin GMA 1347D-00 Installation Manual - Page 36
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4.4.3 Com Audio and Mic Keys
Table 4-13. Com Audio and Mic Keys Pin Assignments, J3471
Pin
27
ON-SIDE COM MIC KEY*
33
CROSS-SIDE COM MIC KEY*
78
COM 3 MIC KEY*
7
ON-SIDE COM AUDIO IN HI
26
ON-SIDE COM MIC AUDIO OUT HI
8
ON-SIDE COM AUDIO LO
12
CROSS-SIDE COM AUDIO IN HI**
CROSS-SIDE COM MIC AUDIO OUT
32
HI**
13
CROSS-SIDE COM AUDIO LO**
58
COM 3 AUDIO IN HI
77
COM 3 MIC AUDIO OUT HI
59
COM 3 AUDIO LO
* Denotes Active Low (Inputs: ground to activate; Outputs: grounded when active).
** Denotes analog inputs not used in digital installations.
4.4.4 Nav Audio
Pin
Pin Name
6
ON-SIDE NAV AUDIO IN HI**
25
ON-SIDE NAV AUDIO IN LO**
CROSS-SIDE NAV AUDIO IN
14
HI**
CROSS-SIDE NAV AUDIO IN
34
LO**
** Denotes analog inputs not used in digital installations.
Page 4-10
Revision C
Pin Name
Nav Audio
Table 4-14.
Description
Enables audio into the respective
transceiver unit
COM 1 audio input for GMA #1
COM 2 audio input for GMA #2
COM 1 audio output for GMA #1
COM 2 audio output for GMA #2
Ground reference for COM 1 audio
(GMA #1)
Ground reference for COM 2 audio
(GMA #2)
COM 2 audio input for GMA #1
COM 1 audio input for GMA #2
COM 2 audio output for GMA #1
COM 1 audio output for GMA #2
Ground reference for COM 2 audio
(GMA #1)
Ground reference for COM 1 audio
(GMA #2)
COM 3 audio input
COM 3 audio output
Ground reference for Com 3 audio
Pin Assignments, J3471
Description
Nav 1 audio input for GMA #1
Nav 2 audio input for GMA #2
Nav 1 ground reference for GMA #1
Nav 2 ground reference for GMA #2
Nav 2 audio input for GMA #1
Nav 1 audio input for GMA #2
Nav 2 ground reference for GMA #1
Nav 1 ground reference for GMA #2
GMA 1347D Installation Manual
190-00303-21
I/O
Out
Out
Out
In
Out
--
In
Out
--
In
Out
--
I/O
In
In
In
In