Connector Pinout Information; Figure 9. Rear View , Connector; Table 9. Connector Pinout - Garmin GTX 330 System Maintenance Manual

Failure Message
TRANSPONDER 1 –
Transponder 1 is inoperative
or connection to GTN is lost.
TRANSPONDER 2 –
Transponder 2 is inoperative
or connection to GTN is lost.
TRANSPONDER –
Transponder 1 and 2 Mode S
addresses do not match.
5.3

CONNECTOR PINOUT INFORMATION

Pin
1 RESERVED
2 ALTITUDE A1
3 ALTITUDE C2
4 ALTITUDE A2
5 ALTITUDE A4
6 ALTITUDE C4
7 ALTITUDE B1
8 ALTITUDE C1
9 ALTITUDE B2
10 ALTITUDE B4
11 ALTITUDE D4
12 EXTERNAL IDENT SELECT*
13 EXTERNAL STANDBY SELECT*
190-00734-11
Rev. 1
The document reference is online, please check the correspondence between the online documentation and the printed version.
Cause
The GTN cannot communicate
with the transponder or the
transponder is reporting a
system failure.
The transponders are
configured for different Mode
S addresses.
Figure 9. Rear View, Connector P3301

Table 9. Connector Pinout

GTX 33/33D
Pin Name
If two transponders are installed,
ensure both GTNs are powered on.
Check for proper configuration.
Check for correct wiring.
Verify the Mode S address for each
transponder and verify that they
match.
GTX 330/330D
Pin Name
AVIONICS MASTER ON SELECT
ALTITUDE A1
ALTITUDE C2
ALTITUDE A2
ALTITUDE A4
ALTITUDE C4
ALTITUDE B1
ALTITUDE C1
ALTITUDE B2
ALTITUDE B4
ALTITUDE D4
EXTERNAL IDENT SELECT*
EXTERNAL STANDBY SELECT*
GTX 330/33 with ADS-B Out
Maintenance Manual with ICA
5-3
Solution
I/O
In
In
In
In
In
In
In
In
In
In
In
In
In