Throttle Not Arming Pixhawk new sounds

Hey guys,

I am working with Pixhawk, and for some reason my throttle is not activating. I know that the throttle/motor does work, because for some reason I bumped the throttle and it came alive for a second, but then it quickly stopped working.

This has only happened once or twice. Most of the time when I activate the Pixhawk, the system gives me a Do-Re-Mi sound that is not anywhere on the following link:

http://plane.ardupilot.com/wiki/common-autopilots/common-pixhawk-overview/common-sounds-pixhawkpx4/

In fact, here is a video of what I am hearing:

https://www.youtube.com/watch?v=s8qXUC-hfFk&feature=youtu.be

If anyone knows what this means and can help me out, it would be greatly appreciated. I might have some calibration/setting issues or something with the ESC, but I really have no idea what I should be doing as I have never had this problem before.

Cheers,

-Andrew

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