Page A-16
G900X/G950 Installation and Maintenance Manual – Pinouts
Revision D
190-00719-00
A.2.4.6 Reversionary Mode
Pin Name
Connector
Pin
I/O
REVERSIONARY MODE 1
P3472
36
Out
REVERSIONARY MODE COMMON 1
P3472
37
--
REVERSIONARY MODE 2
P3472
56
Out
REVERSIONARY MODE COMMON 2
P3472
57
--
The reversionary mode pins are used in installations having more than one GDU 1040 that have a
GMA 1347. The GMA 1347 contains a display backup button. This button is used to switch the PFD
and MFD display data.
A.2.4.7 Speaker
Pin Name
Connector
Pin
I/O
SPEAKER AUDIO OUT LO
P3472
41
--
SPEAKER AUDIO OUT HI
P3472
42
Out
The speaker output is capable of driving up to 10 Watts into a 4
Ω
or 8
Ω
speaker.
A.2.4.8 Digital Audio
Pin Name
Connector
Pin
I/O
ON-SIDE COM MIC DIGITAL AUDIO OUT
P3472
8
Out
ON-SIDE COM DIGITAL AUDIO IN
P3472
9
In
CROSS-SIDE COM MIC DIGITAL AUDIO OUT
P3472
47
Out
CROSS-SIDE COM DIGITAL AUDIO IN
P3472
48
In
ON-SIDE NAV DIGITAL AUDIO IN
P3472
28
In
CROSS-SIDE NAV DIGITAL AUDIO IN
P3472
68
In
CROSS-SIDE DIGITAL AUDIO CLOCK OUT
P3472
49
Out
CROSS-SIDE DIGITAL AUDIO CLOCK IN
P3472
50
In
VOICE ALERT DIGITAL AUDIO IN
P3472
29
In
COM
SWAP*
P3472 17 In
PROGRAM GROUND
P3472
18
--
RECORDER
PLAY*
P3472 4 In
PROGRAM GROUND
P3472
5
--
RECORDER OFF SELECT*
P3472
24
In
PROGRAM GROUND
P3472
25
--
A.2.4.9 PA MUTE
Pin Name
Connector
Pin
I/O
PA MUTE* OUT
P3472
64
Out
PA MUTE is an output that when pulled low is active. It is used to trigger the mute function on an
external PA system.