
190-01499-02
GTX 3x5 TSO Installation Manual
Rev. 1
Page 5-1
5 CONNECTOR PINOUT INFORMATION
5.1 Main Board Connector - P3251
This section describes the main board connector, which is available on all unit configurations.
Pin
Pin Name
I/O
1
CONFIG CLOCK
O
2
USB D+
I/O
3
OAT INPUT
I
4
1PPS A
I/0
5
ARINC 429 TXA
O
6
ARINC 329 TXB
O
7
RS-232 #3 TxD
O
8
RS-232 #2 TxD
O
9
RS-232 #1 TxD
O
10
ALT A1
I
11
ALT B1
I
12
ALT C1
I
13
ALT D4
I
14
EXT STANDBY
I
15
DISC IO1
I/O
16
DISC IO2
I/O
17
ALTITUDE ALERT OUT
O
18
SUPPRESSION BUS
I/O
19
LTNG HI
I
20
GROUND (power ground)
I
21
AV PWR 1
I
22
CONFIG DATA
I/O
23
GROUND (config module)
O
24
USB D-
I/O
25
OAT POWER
O
26
1PPS B
I/O
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
21
20 19 18 17 16
15 14
13 12
11
10
9
8
7
6
5
4
3
2
1
Содержание GTX 325
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