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SR5500:Why I am seeing 1,-200,"Execution error" when I switch different channel model?

You will see below error when you switch channel model if AWGN is enabled

The output signal will be disabled when you play the fading, there are two workaround available:
1, Before switching channel model, disable AWGN, after channel model has been switched, enable AWGN again
2, Save the new channel model with AWGN in a new setting file, reload the setting file if neccesary.

Product : VR5