190-00734-11
GTX 33X and GTX 3X5 ADS-B Maintenance Manual
Rev. 6
Page 5-10
5.3 GTX 33X Connector Pinout Information
5.3.1 GTX 33X (J3301)
Figure 5-6 Rear View, Connector P3301
Table 5-1 GTX 33X Pinout
Pin
GTX 33/33D Pin Name
GTX 330/330D Pin Name
I/O
1
RESERVED
AVIONICS MASTER ON SELECT
In
2
ALTITUDE A1
ALTITUDE A1
In
3
ALTITUDE C2
ALTITUDE C2
In
4
ALTITUDE A2
ALTITUDE A2
In
5
ALTITUDE A4
ALTITUDE A4
In
6
ALTITUDE C4
ALTITUDE C4
In
7
ALTITUDE B1
ALTITUDE B1
In
8
ALTITUDE C1
ALTITUDE C1
In
9
ALTITUDE B2
ALTITUDE B2
In
10
ALTITUDE B4
ALTITUDE B4
In
11
ALTITUDE D4
ALTITUDE D4
In
12
EXTERNAL IDENT SELECT*
EXTERNAL IDENT SELECT*
In
13
EXTERNAL STANDBY SELECT*
EXTERNAL STANDBY SELECT*
In
14
NOT USED
28 V LIGHTING BUS HI
In
15
AUDIO OUT HI
AUDIO OUT HI
Out
16
AUDIO OUT LO
AUDIO OUT LO
Out
17
SQUAT SWITCH IN
SQUAT SWITCH IN
In
18
RESERVED
RESERVED
--
19
ALTITUDE ALERT ANNUNCIATE*
ALTITUDE ALERT ANNUNCIATE*
Out
20
RESERVED
RESERVED
--
21
AIRCRAFT POWER 1
AIRCRAFT POWER 1
In
22
RS-232 IN 1
RS-232 IN 1
In
23
RS-232 OUT 1
RS-232 OUT 1
Out
24
RS-232 IN 2
RS-232 IN 2
In
59
58
57
56
55
54
53
52
51
43
44
50
49
48
47
46
45
62
61
60
25
24
23
22
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
1
2
3
4
5
6
7
8
9
10
11
13
14
15
16
17
12
19
20
21
18
