Hi If that data is correct, then the 10811 you have is defective.
Bob > On Aug 6, 2015, at 11:37 PM, tim...@timeok.it wrote: > > > here the ADEV of the two oscillator. I have added the Super performance of an > HP105B (old oscillator) bought in an Ham fest. > > Luciano > > > > On Fri 07/08/15 03:37 , Bob Camp <kb...@n1k.org> wrote: > >> Hi >> >> HP 10811’s vary over almost a 100:1 range in terms of ADEV performance >> at short tau. The standard model is un-sealed so it has some issues >> with humidity when it is in storage for a long time. In both the case of >> the 10811 and the 105, their stability will improve as they are >> on power. In the case of long term storage, they both may continue to >> improve for more than a month. >> >> All of this makes any sort of comparison between the two models a bit >> difficult. About all you can say is that on a given day, this example of >> one >> was (or was not) more stable than that example of the other model. >> >> Bob >> >>> On Aug 6, 2015, at 5:03 AM, tim...@timeok.it wrote: >>> >>> >>> >>> Hi, >>> >>> I have done some measurement comparing two HP OCXO, the HP10811 and the >> 105. >>> >>> These two oscillator are mounted in the HP5065A rubidium Standard, the >> 105 in the old models, the 10811 in newer, and for this purpose they are >> selected units. >>> >>> I have two HP5065A use the different oscillators. For the stability test >> I have set the two 5065A in Open loop so the OCXO are free running . >>> I have done the measurements using as reference a third HP5065A in >> closed loop operation. >>> >>> Here the files show the frequency and phase difference. >>> >>> The 00105-6034 appear to be more stable as frequency than the 10811. >>> >>> comments? >>> >>> >>> Luciano >>> www.timeok.it [1] >>> Message sent via Atmail Open - >> http://atmail.org/_______________________________________________ >>> time-nuts mailing list -- time-nuts@febo.com >>> To unsubscribe, go to >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts [3] >>> and follow the instructions there. >> >> >> >> Links: >> ------ >> [1] http://webmail.timeok.it/parse.php?redirect=http://www.timeok.it >> [2] >> http://webmail.timeok.it/parse.php?redirect=http://atmail.org/%26lt%3BHP >> [3] >> http://webmail.timeok.it/parse.php?redirect=https://www.febo.com/cgi-bin/ma >> ilman/listinfo/time-nuts >> > Message sent via Atmail Open - > http://atmail.org/<ocxo.gif>_______________________________________________ > 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.
