Thank you both for your replies. Yes, irig b is modulated with a 1khz sinewave. But it also contains encoded digital data and I am wondering if that data is what makes the freq
counter vary within a range, rather than stay locked at 1 khz solid. I believe the digital data is pulse width...
I am checking an irig b signal which in this case is modulated with a 1 khz signal. Being as it is amplitude modulated I would expect a solid 1000 cycle rate to show on the frequency counter. When I measure the signal it ranges from 994 hz to 1002 hz, transitioning back and forth at a regualar...
