Hi,
I measured an amplifier a few weeks ago and the result was as expected.
I tried repeating the same measurement yesterday and this was the result:
I had this problem once before and after turning everything off and on again it went away. Now I can't get a normal phase response and I'm having the same problem with a second amplifier although the point of phase reversal is different.
Any suggestions as to what I might be doing wrong please?
I measured an amplifier a few weeks ago and the result was as expected.
I tried repeating the same measurement yesterday and this was the result:
I had this problem once before and after turning everything off and on again it went away. Now I can't get a normal phase response and I'm having the same problem with a second amplifier although the point of phase reversal is different.
Any suggestions as to what I might be doing wrong please?