Plugging in a trainer cord turns on the controller, but doesn't trigger the PPM output.

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What steps will reproduce the problem?
1. Get a simulator that uses the JR trainer cord/protocol.
2. Configure a model for it on your controller (use PPM output protocol).
3. Turn the controller off.
4. Plug in the trainer cord to the simulator, and notice that the controller 
comes on, but there is no PPM output from it.

What is the expected output? What do you see instead?
When I plug in the trainer cord, I expect the controller to come on, and PPM 
output to be sent out via that cord.

What version of the product are you using? On what operating system?
r2413.

Please provide any additional information below.
I've been told, but not verified (sorry) that er9x does this properly. The 
sources were dissimilar enough that I couldn't see what might be causing such a 
difference.

Original issue reported on code.google.com by [email protected] on 10 Jun 2013 at 7:23