Garmin GTX 330 Series Supplement GRT Avionics
Revision A GTX 330-6
3.2 Configuring the GTX 330
Refer to the most current Garmin GTX 330 installation manual for instructions for accessing the
transponder Configuration page and setting up other important transponder characteristics. This
configuration information only applies to the settings that affect the transponder’s communication
with the EFIS system; there may be other settings required to make the transponder function
properly.
3.3 Post-Installation Checkout for the GTX 330
1. Check that the GTX 330 has a pressure altitude showing on the display.
2. With the GTX 330 turned on go to the Set Menu, General Setup. Check the designated
serial ports counter is active and counting.
RS-232 INPUT/OUTPUT page
INPUT
OUTPUT
CHNL 1*
FADC W/ALT
TIS w/REMOTE
* GTX 330 serial port pair wired to Display Unit
Multiple serial ports may be used to connect multiple displays for redundancy.
