Ads-B Board Connector - P3252; Power - Garmin GTX 3x5 Series Installation Manual

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.
Pin
1 HSDB 1 TX B
2 HSDB 1 RX B
3 HSDB 2 TX B
4 HSDB 2 RX B
5 RS-232 #4 TxD
6 HSDB 1 TX A
7 HSDB 1 RX A
8 HSDB 2 TX A
9 HSDB 2 RX A
10 RS-232 #4 RxD
11 RS-422 A
12 RS-422 B
13 DISC IO
14 DISC IO
15 GROUND (RS-232 sig ground)

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 Name
AV PWR 1
AV PWR 1
AV PWR 2
AV PWR 2
GROUND (power ground)
GROUND (power ground)
SW PWR OUT
KEEP ALIVE
190-01499-02
Rev. 1
5 4 3 2 1
10 9 8 7 6
15 14 13 12 11
Pin Name
Connector
P3251
P3251
P3251
P3251
P3251
P3251
P3251
P3251
Pin
21
42
61
62
20
41
39
60
GTX 3x5 TSO Installation Manual
I/O
O
I
O
I
O
O
I
O
I
I
I/O
I/O
I/O
I/O
O
I/O
I
I
I
I
I
I
O
I
Page 5-3