Table 5-5 J3751 Connector Pinout - Garmin GPS 175 Maintenance Manual

Pin Pin Name
PRESSURE SENSOR/CONFIG
1
MODULE(C)
2 RESERVED
3 OAT TEMP PROBE(I)
4 TIME MARK A
5 RESERVED
6 RESERVED
7 RS-232 #5 (T)
8 RS-232 #4 (T)
9 RS-232 #3 (T)
ALTITUDE GRAY CODE INPUT
10
(A1)
ALTITUDE GRAY CODE INPUT
11
(B1)
ALTITUDE GRAY CODE INPUT
12
(C1)
ALTITUDE GRAY CODE INPUT
13
(D4)
14 EXT STANDBY (DISCRETE IN 6)
15 DISCRETE I/O 1
16 DISCRETE I/O 2
17 RESERVED
18 EXT SUPPRESSION BUS
19 LIGHTING BUS(H)
20 POWER GND
21 POWER INPUT 1
PRESSURE SENSOR/CONFIG
22
MODULE(D)
PRESSURE SENSOR/CONFIG
23
MODULE(GND)
24 RESERVED
25 OAT TEMP PROBE(O)
26 TIME MARK B
27 ARINC 429 IN 1 A
28 ARINC 429 IN 1 B
29 RS-232 #5 (R)
30 RS-232 #4 (R)
31 RS-232 #3 (R)
190-02207-A2
Rev. 3

Table 5-5 J3751 Connector Pinout

I/O
--
--
--
OUT
--
--
OUT
OUT
OUT
IN
IN
IN
IN
IN
I/O
--
OUT
OUT
IN
--
IN
I/O
OUT
--
--
OUT
IN
IN
IN
IN
IN
GPS 175/GNX 375/GNC 355 Part 23 AML STC Maintenance Manual
Pin Pin Name
ALTITUDE GRAY CODE
32
INPUT(A2)
ALTITUDE GRAY CODE
33
INPUT(B2)
ALTITUDE GRAY CODE
34
INPUT(C2)
35 RESERVED
36 EXT IDENT (DISCRETE IN 7)
37 AUDIO MUTE (DISCRETE IN 9)
38 POWER CONTROL
39 SWITCHED POWER OUT
40 LIGHTING BUS(L)
41 POWER GND
42 POWER INPUT 1
PRESSURE SENSOR/CONFIG
43
MODULE(V)
44 RESERVED
45 RESERVED
46 AUDIO OUT
47 AUDIO GND
48 ARINC 429 IN 2 A
49 ARINC 429 IN 2 B
50 RS-232 #5 (GND)
51 RS-232 #4 (GND)
52 RS-232 #3 (GND)
ALTITUDE GRAY CODE
53
INPUT(A4)
ALTITUDE GRAY CODE
54
INPUT(B4)
ALTITUDE GRAY CODE
55
INPUT(C4)
ALTITUDE GRAY CODE
56
INPUT(GND)
57 AIR/GROUND (DISCRETE IN 8)
58 RESERVED
59 RESERVED
60 RESERVED
61 POWER INPUT 2
62 POWER INPUT 2
I/O
IN
IN
IN
--
IN
OUT
--
--
IN
--
IN
OUT
--
--
OUT
--
IN
IN
--
--
--
IN
IN
IN
IN
IN
IN
IN
OUT
IN
--
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