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Page A-38
G900X/G950 Installation and Maintenance Manual – Pinouts
Revision D
190-00719-00
A.3.12.3 Com/VOR/ILS Audio
Pin Name
Connector
Pin
I/O
COM 500
Ω
AUDIO OUT HI
P601 9 Out
COM 500
Ω
AUDIO OUT LO (GROUND)
P601 10 --
VOR/LOC 500
Ω
AUDIO OUT HI
P602 16 Out
VOR/LOC 500
Ω
AUDIO OUT LO (GROUND)
P602 17 --
VOICE ALERT 500
Ω
AUDIO OUT HI
P604 2 Out
VOICE ALERT 500
Ω
AUDIO OUT LO (GROUND)
P604 3 --
500
Ω
COM AUDIO and 500
Ω
VOR/ILS AUDIO each supply 100 Mw into a 500
Ω
load. These are
balanced outputs and the LO output must be connected.
500
Ω
COM AUDIO is the summation of the COM receiver audio, COM sidetone audio, and
INTERCOM MIC audio.
A.3.12.4 Digital Audio
Pin Name
Connector
Pin
I/O
COM DIGITAL AUDIO OUT
P601
13
Out
COM MIC DIGITAL AUDIO IN
P601
14
In
VOICE ALERT DIGITAL AUDIO OUT
P603
69
Out
VOR/LOC DIGITAL AUDIO OUT
P602
59
Out
When interfaced to a GMA 1347 audio panel, these can be used in place of analog audio lines.
A.3.12.5 Discrete Inputs
Pin Name
Connector
Pin
I/O
TRANSMIT INTERLOCK
P601
11
In
COMM REMOTE TRANSFER
P601
12
In
VLOC/ILS REMOTE TRANSFER
P602
28
In
INACTIVE: 10
≤
Vin
≤
33VDC or Rin
≥
100k
Ω
ACTIVE: Vin
≤
1.9VDC with
≥
75 uA sink current, or Rin
≤
375
Ω
Sink current is internally limited to 200 uA max for a grounded input
COM REMOTE TRANSFER and VLOC REMOTE TRANSFER are momentary inputs.
A.3.12.6 Marker Beacon
Pin Name
Connector
Pin
I/O
OUTER MARKER LAMP IN
P605
56
In
MIDDLE MARKER LAMP IN
P605
57
In
AIRWAY/INNER MARKER LAMP IN
P605
58
In
Active high inputs used for outer/middle/inner marker lamp inputs.