Re: AD8307 probe-How is it used?
Jeremy,
Thanks.
I read all that, hand on heart.
Very interesting.
I saw some of that third harmonic variation with a quick test setup here, but I cannot control the phase of my second sig gen.
You have the benefit of owning two special sig gens.
If I vary the frequency of my third harmonic by 10 Hz (not the same but a minimum avbl step), I get "accuracy wobbles" on my AD8307 Milliwattmeter.
My two sig gens are M2018 and M2022 within 2 Hz by GPSDO.
The reason for your result with IMD two tone test is that the signals are not exactly coherent?
rgds
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