HP 5359A Time Synthesiser?
On 30/11/2017, at 10:24 AM, Leo Bodnar wrote: > I am looking for an established and widely accepted procedure for verifying > performance of high resolution time counters. > > I have designed a time stamping counter for qualifying 1PPS signal > performance against external reference (e.g. 10MHz master clock.) > > Simple design verification check I am doing at the moment is gating random > selection of master clock edges back into device's signal input and letting > the device measure this test signal offset against its reference clock - > which, for ideal design, should result in zero offset (modulo 100ns.) My > results are roughly in line with what I expect to see > http://leobodnar.com/balloons/NTP/time-sampler-test1.png > > Now, what would be recognised procedure for sweeping external input pulse > delay over few hundred ns in a controlled, measurable and repeatable way? > > I can see few naïve approaches: > 1) Using selectively gated (or divided) reference clock followed by > adjustable delay line. E.g. something like mechanically adjusted delay lines > used in HP test sets. Or, perhaps, calibrated rigid coax sections? > 2) Slightly offset another master clock (e.g. second Rb oscillator) gated in > a similar way but without delay line, followed by statistical data analysis > 3) Trusted pulse generator with high resolution delay adjustment fed from the > same master clock as the counter > > I am looking for something with ~10ps accuracy, 100ns+ range, and reasonably > low jitter (~5ps or better.) > It is possible that the range needs to be split up (e.g. fixed rigid coax > delay line followed by a mechanically adjust section.) > > This is a low budget fun project so something simple and common sense is > preferred to "price on application" NIST traceable equipment. > > Thanks! > Leo > _______________________________________________ > 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.
