Mag interference from TX

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BarneyG
Posts: 39
Joined: Tue May 07, 2013 4:42 pm

Mag interference from TX

Post by BarneyG »

I was doing some work on POT based PID tuning on the new 2.3 release and noticed that there was a regular blip on my Mags Yaw trace.

Screen Shot 2013-11-11 at 19.11.34.png
(10.85 KiB) Not downloaded yet


So basic hardware specs are :
Crius V2 FC.
FrSky D8R-II Plus with the D8R-XP 27ms CPPM firmware and a DJT module
Turnigy 9xr

The RX is connected using CPPM on the throttle pin.
When the 9xr is switched off the trace is flat when it is switched on there are these regular blips.

I've tried the following :
Reverting to 2.2
Removed the telemetry connection between the FC and the RX
Removed the define so the FrSky telemetry isn't built into the hex
Put the RX on an extension cable and moved it as far away as possible
Moved the TX to the other side of the room

None of which seemed to have any effect. The only other think I can think to try now is to try going back to non CPPM mode.
Anyone else seen this, anything else I could do to stop it and perhaps most importantly is it going to have a significant impact to make me care enough to stop it ?

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