Receiver Output Tester

[Greatscott]

I have something kind of weird going on with one of my Spektrum receivers. I have a SR6100AT (DSMR) that is bound with a DX5C. Channels 1 - 3 work fine, but Aux 2 and 3 throw the servo hard one direction (Aux 4 on the RX will not work due to the radio only being five channels). I have tried this with three servos and get the same result each time. When I plug the servos into the steering port they work fine. I have also ran the servos off of Aux 1 with no issues. So, I am trying to figure out why the other aux channels are not working.

The RX is being powered by a CC 10A BEC set at 6.5VDC. The voltage on the receiver bus reads 6.45VDC, so no issues there. The ESC and winch ESC both have their red wires removed out of the connectors, and are not sending power to the RX.

With this, does anyone make a receive output tester? I have an analog and digital servo testers, but nothing to test the digital signals coming out of the receiver.

[bryantjt]

What does the servo monitor screen on the radio show it doing? Do you have the aux switches setup to do something specific? Do you have their travel setup correctly?

[Voodoobrew]

I use an arduino.

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[heyok]

Originally Posted by Greatscott

..snip.. I have an analog and digital servo testers, but nothing to test the digital signals coming out of the receiver.

A servo is a good tester for a receiver that is picking up a transmitter. Even better, use an oscilloscope.

[Greatscott]

Thank you very much for the responses!!!!

I figured out what was causing my issues, although I am not certain as to why.

I am adding a dig in a rig that already has its 3rd channel used by a winch. That rig had a 3-ch DSM2 RX set at 16ms. I bound a 6ch DSMR RX to the same profile, and neglected to change the frame rate to 22ms, didn't think it mattered. As a result, only channels 1-3 worked properly. After beating my head against my workbench for two days I noticed the frame rate, but didn't think it would help my problem, but changed it anyways. Like magic chs 4 & 5 started working properly. So, if you have this kind of issue, make sure your frame rate is set properly.

[Voodoobrew]

That's expected for 22ms only having 3ch. I think it's mentioned in spectrums instructions. You have to use faster signals for more channels. But yea, easy to overlook.

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