Hi You have to measure two different outputs to do what you describe. The PPS measurements are limited to > 1 x10^-10 with most counters at tau = 1 second and 2x10^-11 with some exotic models. The mixer based stuff can get around three orders of magnitude past that at the same tau. Since a practical mixer system involves filtering one would expect some impact from that. The gotcha is the low resolution of the counter approach. You run out of resolution before you can really see anything.
All that said, yes, I have measured the same device both ways and the results do agree within the accuracy constraints imposed by the techniques. Bob > On Jan 16, 2018, at 11:58 AM, slawek dabrowski <slawd...@wp.pl> wrote: > > > Hello to the group! > > Have you ever measured frequency standard (or other precision oscillator) > simultanously by time interval method (difference between 1 pps ref and 1 pps > DUT) and dual mixer method (e.q. with phase/frequency comparator)? I'm very > interested in results. > > Slawek > > > > > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
