Use transient. Take samples of the output at the end of your hold phase. Use conservative settings. Use number of cycles of the input sine wave and number of points for the dft N that conform to the formula Fin = (cycles/N)*Fs. Chose cycles and N mutually prime numbers.
So, if I want to measure the SFDR or Dynamic Range in general, it is the same procedure as usual - run a transient, set the strobe period in options and as you said, make sure I have coherent sampling ? Is that correct ?
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Also, I want to find the IIP3 of this filter.
I want to run a two tone test with Vin at 10mv and 100mV.