D180 to GTX 327 - Altitude Encoding

[scgarrett3037]

Hello, I have a RV12 with the D180 avionics package. My transponder (GTX 327) does not show the pressure altitude.  I've checked the D180 configuration and it shows Format 4. I believe this is correct. Assuming the wiring harness is correct, any suggestions to get Pressure Altitude to show on GTX 327?

 

[Dynon]

If the harness is correct, that's all you need to do on the D180 side. The 327 also has a setting in its setup menu system. Its input should be set to receive what it calls "icarus" format.

 

[dynonsupport]

Has it ever worked? If no, then it's likely a wiring issue.

This signal originates from the FlightDEK-D180's 25-pin Male connector, Pin 13, with the corresponding Ground coming from Pin 21.

(Transponder Pressure Altitude output) Format 4 is the correct setting for a GTX-327.

Hello, I have a RV12 with the D180 avionics package. My transponder (GTX 327) does not show the pressure altitude.  I've checked the D180 configuration and it shows Format 4. I believe this is correct. Assuming the wiring harness is correct, any suggestions to get Pressure Altitude to show on GTX 327?

 

[scgarrett3037]

No, it has never worked.  I went into the config of the GTX327 and found RS232 Channels 1 & 2 set to off. I believe it says output and that was set to ICARUS. I'll check again tomorrow.

 

[jakej]

Whichever channel, usually 1, the wire from the Dynon is connected to the GTX 327 should be set to INPUT Icarus Alt - Then if the wiring is correct & you have format 4 set on Dynon then it will work

Jake J

 

[scgarrett3037]

Jake J..... Thank you for your suggestion.  I reconfigured channel 1 to show Input Icarus ALT and my transponder now shows a pressure altitude!  I left all other fields unchanged.
Thanks again.