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SSD120
Function
Cessna RT359A,
15 Pin
RT459A, RT859A Pin
Conn.
Number
1
D4
2
A1
3
A2
4
A4
5
B1
9
B2
10
B4
11
C1
13
C2
12
C4
Output
6
Enable
8 or
14 to
14
28VDC
*6
Input
15
Ground
Connect to
Serial Data Connection for the Garmin GTX327 Transponder
SSD120-(XX)A-RS DA-15S Conn.
4 or 12
1 or 5 or 8
Protocol, Connect pin 10 to ground.
To allow the Garmin GTX 327 transponder to communicate with the SSD120-(XX)A-RS go to the Setup Page and
set the Altitude Source (ALT SRC) to receive data in the Icarus RS232 format.
5
Data for this connection not available at this time.
6
Pins 8 and 14 are connected internally.
Narco AT-150 AT-50, AT-
50A Pin Number
10
*5
14
13
15
19
12
17
10
16
21
14
18
11
20
13
11
9
18
Connect to
aircraft
ground.
aircraft
ground.
Function
TxD to RxD
Ground
Table II
Narco AT-6A AT-5,
AT-6 Pin Number
*5
7
2
6
4
8
8
9
10
9
11
1
3
5
5
12
13
14
GTX 327 25 Pin
Conn.
19
13 or 25
-24-
Garmin GTX 327 Pin
Number
18
3
5
6
9
11
12
10
4
7
13 or 25 or
aircraft ground
14 to 28VDC
Input
Connect to
aircraft ground.
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