Garmin G900X Installation And Maintenance Manual page 310

A.2.4.6 Reversionary Mode
Pin Name
REVERSIONARY MODE 1
REVERSIONARY MODE COMMON 1
REVERSIONARY MODE 2
REVERSIONARY MODE COMMON 2
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
SPEAKER AUDIO OUT LO
SPEAKER AUDIO OUT HI
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
ON-SIDE COM MIC DIGITAL AUDIO OUT
ON-SIDE COM DIGITAL AUDIO IN
CROSS-SIDE COM MIC DIGITAL AUDIO OUT
CROSS-SIDE COM DIGITAL AUDIO IN
ON-SIDE NAV DIGITAL AUDIO IN
CROSS-SIDE NAV DIGITAL AUDIO IN
CROSS-SIDE DIGITAL AUDIO CLOCK OUT
CROSS-SIDE DIGITAL AUDIO CLOCK IN
VOICE ALERT DIGITAL AUDIO IN
COM SWAP*
PROGRAM GROUND
RECORDER PLAY*
PROGRAM GROUND
RECORDER OFF SELECT*
PROGRAM GROUND
A.2.4.9 PA MUTE
Pin Name
PA MUTE* 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.
Page A-16
Revision D
Connector
Connector
Connector
Connector
G900X/G950 Installation and Maintenance Manual – Pinouts
Pin I/O
P3472 36 Out
P3472 37
P3472 56 Out
P3472 57
Pin I/O
P3472 41
P3472 42 Out
Pin I/O
P3472 8 Out
P3472 9 In
P3472 47 Out
P3472 48 In
P3472 28 In
P3472 68 In
P3472 49 Out
P3472 50 In
P3472 29 In
P3472 17 In
P3472 18
P3472 4 In
P3472 5
P3472 24 In
P3472 25
Pin I/O
P3472 64 Out
190-00719-00
--
--
--
--
--
--