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You have to be careful of false responses. Let's imagine you are testing a bandpass filter at 6 mhz. As the si5351 sweeps from 1 mhz to 10 mhz, at 2mhz, the si5351's output will also contain 6 mhz harmonic and this will pass through the 6 mhz filter giving a false response that will lead you to believe that the filter is passing signal at 2 mhz as well.
On Sun 10 May, 2020, 12:40 PM , <ashok.das81@...> wrote: