Figure 5-14 J3752 Connector (Looking At Unit); Table 5-6 J3752 Connector Pinout; J3752 44-Pin Hd-Dsub - Garmin GPS 175 Maintenance Manual

5.4.2

J3752 44-Pin HD-DSub

31
16
A
1
Ground
Reserved
Pin Pin Name
1 ARINC 429 OUT 1 A
2 ARINC 429 OUT 1 B
3 ETHERNET OUT(P)
4 ETHERNET IN(P)
5 RS-232 #1(T) / RS-422 A
6 RS-232 #2(T)
7 LATERAL +LEFT OUT
8 VERTICAL +UP OUT
9 TO FLAG
10 LOC COMPOSITE
11 OBS ROTOR H (GND)
12 OBS ROTOR C
13 APPROACH ANNUNCIATE
14 DISCRETE IN 2
15 REMOTE GO AROUND
16 RESERVED
17 RESERVED
18 ETHERNET OUT(N)
19 ETHERNET IN(N)
20 RS-232 #1(R) / RS-422(B)
21 RS-232 #2(R)
22 LATERAL +RIGHT OUT
190-02207-A2
Rev. 3
T R
R
R/B
B T
R T
T/A

Figure 5-14 J3752 Connector (Looking at Unit)

Table 5-6 J3752 Connector Pinout

I/O
OUT
OUT
OUT
IN
OUT
OUT
OUT
OUT
--
OUT
OUT
OUT
OUT
IN
--
--
--
OUT
IN
IN
IN
OUT
GPS 175/GNX 375/GNC 355 Part 23 AML STC Maintenance Manual
D F
R
U
L
T
Pin
23 VERTICAL +DOWN OUT
24 FROM FLAG
25 GND
26 OBS STATOR E (GND)
27 OBS STATOR D
28 LOI ANNUNCIATE
29 DEMO MODE
30 GND
31 RESERVED
32 RESERVED
33 DISCRETE OUT 4
34 GND
35 GND
36 LATERAL GND
37 LATERAL FLAG OUT
38 VERTICAL FLAG OUT
39 VERTICAL GND
40 OBS STATOR G (GND)
41 OBS STATOR F
42 GPS SELECT
43 TEST MODE
44 POWER INPUT
F
44
30
D
C
Pin Name
Page 5-27
15
I/O
OUT
--
--
--
--
--
IN
--
--
--
OUT
--
--
--
OUT
OUT
--
--
--
--
IN
IN