I wrote:
Regardless of what mode is selected in the GUI, Commander sends the exact same RF code (say for Power and Channel numbers) according to the output I see from a MR26A. I've tried two different UX17A units with the same result.
OK, I've finally got this figured out. The problem is that the UX17A Commander software (xcom27.exe) is buggy and doesn't send any code to switch modes between TV, VCR, DVD, etc., when the Commander MODE menu item is clicked. However I was able to discover the correct switch codes and send them with the CM17A Firecracker using my own software. They can also be sent with the AHP SDK.
Unfortunately the SDK code for UX17A TV mode is not the "e3 00TV", nor does "e3 03Power" control the power switch. But the following work:
To switch to TV mode:
ahcmd sendrf e3 29MenuToggle
ahcmd sendrf e3 63Release
To switch to VCR mode:
ahcmd sendrf e3 28Six
ahcmd sendrf e3 63Release
To turn Power On/Off in either mode;
ahcmd sendrf e3 30MouseAuxB
ahcmd sendrf e3 63Release
When I get a round tuit, I'll try to post the equivalent SDK commands for the rest of the UX17A functions (assuming anyone really cares).