Page 1 of 1
Trig Transponder Iefis Interface
Posted: Sun Apr 03, 2022 7:45 am
by peterfly
I have an Explorer Lite with TT21 transponder.
The Transponder status window is displaying E RF--
What does this mean?
Re: Trig Transponder Iefis Interface
Posted: Mon Apr 04, 2022 7:34 am
by rainier
This is explained in this document:
http://www.mglavionics.co.za/Docs/ModeS-ADSB.pdf
In your case it means - your Trig is using the GPS from the EFIS, the GPS is fine but does not have a current fix (check your GPS antenna).
It also means that there is seemingly no SP-12 GPS module connected (the second set of status indicators reads "--").
Re: Trig Transponder Iefis Interface
Posted: Mon Apr 04, 2022 2:00 pm
by PaulSS
"......the GPS is fine but does not have a current fix," does not agree with what is written in the manual, which says: "The first “RF” is for the EFIS. It means the transponder interface is receiving GPS information from the EFIS and this GPS has a valid FIX".
Re: Trig Transponder Iefis Interface
Posted: Tue Apr 05, 2022 10:06 am
by rainier
Sorry yes - you are correct. "NF" would be no fix.
Re: Trig Transponder Iefis Interface
Posted: Fri Apr 15, 2022 9:08 am
by peterfly
Hi Rainer
Thank you so much for answering this question - awesome !