190-01499-02
GTX 3X5 Transponder TSO Installation Manual
Rev. 4
Page 5-12
5.13
USB Interface
CAUTION
Use the USB cable shipped with the unit. Do not lengthen or tie up in bundles with other
electrical wires. Potential damage or interference due to coupling with other cables will
occur.
Only use the USB interface for unit configuration, software updates, and service while the aircraft is on the
ground. Do not use during normal operation or when airborne.
Table 5-18 USB Inputs and Outputs
Pin Name
Connector
Pin
I/O
USB DATA HI
P3251
2
I/O
USB DATA LO
P3251
24
I/O
USB VBUS POWER
P3251
44
I
USB GND
P3251
45
O