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190-01499-02
GTX 3X5 Transponder TSO Installation Manual
Rev. 4
Page 5-11
5.10
Audio Output
The audio output is used to provide aural traffic alerts. The output is capable of 100 mW into a 500 ohm
load.
Table 5-15 Audio Inputs and Outputs
5.11
Time Mark
Table 5-16 Time Mark Outputs
With either a GTX 335 or GTX 345 with internal GPS, the TIME MARK can be used as an output to
provide 1PPS to other equipment in the aircraft.
5.12
Configuration Module
The configuration module interface is used for connection to either a configuration module or an optional
GAE module.
The configuration and GAE module kits include a wire harness for connection to the GTX 3X5 D-sub
connector. Connect using The wire colors are shown in table 5-17.
The configuration module stores the specified aircraft installation configuration settings.
The optional GAE module is used to provide the pressure altitude for the transponder. The GAE module
also includes configuration memory function to store the installation configuration. When used, A separate
configuration module is not necessary.
Table 5-17 Configuration Module Inputs and Outputs
Pin Name
Connector
Pin
I/O
AUDIO OUT HI
P3251
46
O
AUDIO OUT LO
P3251
47
O
Pin Name
Connector
Pin
I/O
TIME MARK A
P3251
4
O
TIME MARK B
P3251
26
O
Pin Name
Color
Connector
Pin
I/O
ALT ENCODER/CONFIG MODULE CLOCK
White
P3251
1
O
ALT ENCODER/CONFIG MODULE DATA
Yellow
P3251
22
I/O
ALT ENCODER/CONFIG MODULE POWER
Red
P3251
43
O
ALT ENCODER/CONFIG MODULE GROUND
Black
P3251
23
O