End Point vs Trim vs Center

Note: I posted this message in Getting started ... forum but I had no replies. Maybe it is not the right place so I repost it here.


Hi everybody. Greetings from Spain.

I have one question for you. Maybe it is quite simple but I'm a bit confused.

Which is the diference between End Point, Trim and Center functions?. In my radio (Airtronics RD6000) they are named EPA, TRM and CNT.

I'm trying to adjust the thottle opening for idle. If I decrease EPA the engine revs up. But it also does if I increase the TRM or CNT functions. Which is the right procedure?.

I have also notice similar effects when balancing the swash plate with elevator and aileron channels. I can modifify the position at center with the three functions.

Thanks for you help. Best regards.