190-01499-02
GTX 3x5 TSO Installation Manual
Rev. 1
Page 5-3
5.2 ADS-B Board Connector – P3252
This section describes the ADS-B In board connector, which is available on only the GTX 345
configurations.
5.3 Power
The GTX 3x5 is compatible with 14 and 28 Vdc aircraft electrical systems. The AV PWR 2 input is for
connecting to an alternate power source, such as on an aircraft with two electrical buses.
Pin
Pin Name
I/O
1
HSDB 1 TX B
O
2
HSDB 1 RX B
I
3
HSDB 2 TX B
O
4
HSDB 2 RX B
I
5
RS-232 #4 TxD
O
6
HSDB 1 TX A
O
7
HSDB 1 RX A
I
8
HSDB 2 TX A
O
9
HSDB 2 RX A
I
10
RS-232 #4 RxD
I
11
RS-422 A
I/O
12
RS-422 B
I/O
13
DISC IO
I/O
14
DISC IO
I/O
15
GROUND (RS-232 sig ground)
O
Pin Name
Connector
Pin
I/O
AV PWR 1
P3251
21
I
AV PWR 1
P3251
42
I
AV PWR 2
P3251
61
I
AV PWR 2
P3251
62
I
GROUND (power ground)
P3251
20
I
GROUND (power ground)
P3251
41
I
SW PWR OUT
P3251
39
O
KEEP ALIVE
P3251
60
I
1
2
3
4
5
6
7
9
10
11
12
14
15
13
8