I recently switched to the 9XR Radio with Orange RX modeule/ 9ch Reciever DSM2. (Previouly used 9X radio/ with 9ch RF Reciever)
I use an APM 2.5 on a bixler 1.1, with Arduplane v2.70 software.
When doing the intial radio calibration, while adjusting channel 3 (throttle), i noticed that Channel 1 PWM flickers and becomes erratic from 1500 to approximatly 1900 PWM. This ONLY occurs when the Channel 3 throttle is greater than 1500 PWM AND there is NO Channel 1 input being commanded. (For example if i touch only the chan 3 throttle above 50% the chan 1 output goes full PWM, but if i command a chan 1 (alerion) output the erractic behavior goes away)
I can not duplicate this problem with my old RF 9X transmitter /
Reciever.
i also can not duplicate this problem without the APM 2.5
connected to the Reciever.
If i just plug servos into the DSM2 reciever the issue does NOT occur.
The result of this is large uncommanded Chan 1 (Alerion) inputs with
greater than 50% eng power (chan 3). I have demonstrated this on the
aircraft with the engines unpowered and current draw minimal. I have also removed GPS/ Xbee TM/ power monitor to reduce noise.
I am not positive that it is an APM issue, but I cannot confirm its a
radio problem, because it only occurs with APM connected. Can you give
me any ideas or possible solutions to this problem? Has any one else
experienced this? I've got ferrite cores inbound, but i have low expectations that will cure the problem.
Servo Jitter / Channel Coupling Video
Thanks in advanced for any ideas or similar observations
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