I guess what I am saying is if I discipline the counter with 10MHz and then measure the same 10MHz. Just making sure we are on the same page.
Doc Sent from my iPad On Nov 4, 2012, at 10:22 PM, "Tom Van Baak" <[email protected]> wrote: > Bill, > > This is usually a good idea, since the counter then has both a good short- > and long-term stable/accurate timebase, inherited from the GPSDO. It means > the internal timebase of the counter is no longer a factor in measurement > stability or accuracy. There are exceptions to this, but I'll guess your > setup is not one of them. This configuration is especially good for 1PPS TI > measurements since it means a short 100 ns TI measurement is just as accurate > as a long 0.999999900 s measurement. > > I'm not sure I'd call this a "reference independent" system; it's simply > using a GPSDO as the reference instead of the internal XO timebase of the > counter. > > /tvb > > ----- Original Message ----- > From: "Bill Dailey" <[email protected]> > To: "Time Nuts" <[email protected]> > Sent: Sunday, November 04, 2012 7:19 PM > Subject: [time-nuts] Measuring gpsdo vs itself > > >> If I use a gpsdo as my reference and feed the same 10MHz into a counter does >> that yield the reference independent noise floor of the measuring system? >> Seems to me it would look like an ideal reference with respect to the >> measuring system. Thanks, >> >> Doc >> KX0O > > > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
