Garmin GTX 330 System Maintenance Manual page 39

7.3.1 DOWNLOAD PROCEDURES
1. Access the Dealer Resource Center on (www.flyGarmin.com).
2. Obtain the transponder software as specified in the AML Equipment List Doc. 005-00734-05.
3. Click on the hyperlink for the software download and download to a laptop computer.
4. Access the target directory for the software on the laptop computer.
5. Extract the files by double clicking on the downloaded '.exe' file.
7.3.2 GTX SOFTWARE LOADING
CAUTION
If the unit is removed from the aircraft and operated, always connect J3302 (GTX
33/330/33D/330D) and J3303 (GTX 330D/33D) to a 50 Ω 5 watt load. The GTX
transmits Mode S acquisition squitter replies once per second whether interrogations
are received or not. Failure to connect a dummy load or antenna during this procedure
will cause the transponder to fail.
1. Remove power from the GTX.
2. Connect the test harness to the GTX and laptop as shown in Figure 14.
3. Enable the TEST MODE switch on the test harness.
4. Power on the GTX.
5. Double click on the file 'UPLOADXX.BAT' ('XX' is an incremental number assigned to a specific
software version). The program will begin communicating with the GTX.
6. The upload process could take up to 6 (six) minutes to complete.
NOTE
GTX 330 transponders will show a dynamic display test screen.
7. Once the upload is completed, the unit will reset itself, and turn on.
8. Remove power from the GTX.
9. Remove the test harness between the laptop and the GTX.
10. Install GTX into aircraft and power up system.
11. Verify the software version is correctly displayed.
190-00734-11
Rev. 1
The document reference is online, please check the correspondence between the online documentation and the printed version.
GTX 330/33 with ADS-B Out
Maintenance Manual with ICA
7-3