[time-nuts] Repeatability of stability measurements

hans-georg at lehnard.de hans-georg at lehnard.de
Thu Jun 23 20:56:52 UTC 2022


I am trying to find out the limits of my measuring devices and
oscillators. Therefore I made 2 series of measurements with the same
conditions. In the first series I got 1 out of 10 and in the second 2
out of 10 results with much less noise. I looked at the results in
Timelab and then exported one good and one not so good result (recorded
4 minutes earlier) to stable32 for further analysis. Is this a problem
of my measurement setup or an artifact in the measurements. My
measurement device is a HP E1740A Time interval analyzer with about 50ps
(4.8828124999999998046875e-11) resolution. A Samsung STP2945LF (free
running) from my GPSDO as reference and the reference output of my
BG7TBL FA2 as measurement object. Attached are the results from the 2
series and the 2 further analyzed from the first series.
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