AXP340 Transponder Installation Manual
10 March 2014
01201-00
Issue AF
AVIDYNE CORPORATION
Page 7
Altitude encoder. You require an encoding altimeter or a blind encoder with either parallel Gray
code or RS232 serial output. For best results, and simpler installation, an encoder with a serial
output is recommended.
Cables. You need to supply and fabricate all required cables. Guidance on cable types is given in
section 5 below.
Fixings. To secure the transponder tray to the airframe you will need at least 6 flat head screws
and six self-locking nuts. If the aircraft does not have existing mounting provisions you may need
to fabricate additional brackets to support the transponder tray.
To support the optional ADS-B features a GPS receiver with an appropriate serial output is required.