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: [email protected] [mailto:[email protected]]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" <[email protected]> > To: <[email protected]> > 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 -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
