Yep, it's just a matter of laziness on my part. Frequency input is one of several dozen items that were on my to-do list when I got sidetracked with the ADCs, and which are almost all still there...
-- john, KE5FX > -----Original Message----- > From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com]on > Behalf Of Tom Van Baak > Sent: Sunday, January 10, 2010 3:09 PM > To: Discussion of precise time and frequency measurement > Subject: Re: [time-nuts] AVAR calculation > > > John, > > You can convert frequency to phase (time interval) > using fr2ti under www.leapsecond.com/tools/ > > /tvb > > ----- Original Message ----- > From: "John Miles" <jmi...@pop.net> > To: "Discussion of precise time and frequency measurement" > <time-nuts@febo.com> > Sent: Sunday, January 10, 2010 3:04 PM > Subject: Re: [time-nuts] AVAR calculation > > > > Ulrich's PLOTTER application is a good tool for that; mine > doesn't support > > frequency input yet. If you haven't tried PLOTTER, it's the > second download > > on the page at http://ulrich-bangert.de/html/downloads.html . > Be sure to > > select "Data is frequency" from the Time Stability Statistics menu. > > > > -- john, KE5FX > > > >> -----Original Message----- > >> From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com]on > >> Behalf Of Tom Van Baak > >> Sent: Sunday, January 10, 2010 2:01 PM > >> To: Discussion of precise time and frequency measurement > >> Subject: Re: [time-nuts] AVAR calculation > >> > >> > >> Hi Filip, > >> > >> See attached. Let me know how your results differ from this. > >> > >> It looks like 1.75 hours of frequency data of a 250 MHz DUT. > >> > >> You first convert your raw frequency measurement data into > >> normalized frequency error data (i.e., subtract and divide by > >> f0 = ~250 009 770 Hz). > >> > >> You can run the y- form (frequency) of an adev calculation > >> directly, or integrate the frequency error series into a time > >> error series and run the x- form (phase) of adev calculation. > >> > >> I can explain more if you wish. > >> > >> JohnM and UlrichB can double check this plot with their tools. > >> > >> /tvb > >> > >> ----- Original Message ----- > >> From: "Filip Ozimek" <me_su...@o2.pl> > >> To: <time-nuts@febo.com> > >> Sent: Sunday, January 10, 2010 1:20 PM > >> Subject: [time-nuts] AVAR calculation > >> > >> > >> > > >> > I'm trying to calculate AVAR from collected data, but I would > >> expect a different behavior of my DUT. Does anybody can > >> > calculate the AVAR for me? > >> > Gate time was 1s, without any deadtime between measurements, > >> > this is a file http://www.fuw.edu.pl/~fozimek/pomiar61-frep.txt > >> > with collected data. > >> > > >> > Thanks, > >> > > >> > Filip Ozimek > >> > > >> > > > > > > _______________________________________________ > > 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. _______________________________________________ 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.