02-28-2014, 11:53 AM
If your gen has a separate audio output you can measure right from it. It should be in units of volts, or whatever the manual says.
Or as Mondial suggested use a scope to see the unmodulated frequency and then turn the modulation all the way up and see whether and how much it has changed.
Or as Mondial suggested use a scope to see the unmodulated frequency and then turn the modulation all the way up and see whether and how much it has changed.