Chris, Thanks for sharing the plot.
What instrument are you using to make the measurements? And what frequency reference is being used? Is this a free-running PRS10, or is it locked to GPSDO with some time constant? Is that same GPSDO being used as a reference for your measurements? The plateau looks very much like GPSDO behavior and the slide into e-14 and e-15 territory looks like you're measuring a PLL. /tvb ----- Original Message ----- From: "Chris Burford" <[email protected]> To: <[email protected]> Sent: Sunday, October 14, 2018 7:07 PM Subject: [time-nuts] PRS10 MDEV > Hello All, > I've collected several data sets over the last few days from my RFS > and I'm puzzled by what I'm seeing. A link to the plot is here: > https://drive.google.com/open?id=10Kk8Cqx7es0SXf2H5AldiQkBo8nIfNMT > I'm looking at the averaging periods from about 100 thru 400 tau and > noticed a "plateau" or a brief level off period and then it proceeds > down and right again. Is this flat area a function of the averaging > algorithms for the MDEV or is it something else? > I have spent considerable time in reading "Techniques for Frequency > Stability Analysis" by W.J. Riley and a host of other publications > (NIST, etc) in preparation for this. I would enjoy hearing from any > readers that may have some insight as to what I'm seeing and or > possible causes. > Thanks for reading. > Chris > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
