Hi Ok, so this question should not come as a great surprise: Does one of the 5065’s have about 3X the temperature sensitivity of the other? ( or pressure or humidity ).
Bob > On Jun 8, 2018, at 8:05 AM, tim...@timeok.it wrote: > > > Here a ten days simultaneously run of the A and B version compared with my > HP Z3816A GPSDO. > Luciano > > > Da "time-nuts" time-nuts-boun...@febo.com > A kb...@n1k.org > Cc "time-nuts" time-nuts@febo.com > Data Wed, 6 Jun 2018 08:18:27 +0200 > Oggetto Re: [time-nuts] Raw phase data of super-5065 > > Hi, > > certainly the environmental effects are significant and it is precisely for > this reason that > acquisitions have been made simultaneously on two 5065, one modified and > the other not. > To verify the results the same measures were taken with another pair of > 5065, one modified and the other not. > This second test was carried out at another site 300Km from the first one. > Both tests showed a better and more consistent medium/long term ADEV than > the unmodified HP5065A. > I want to clarify that these measures have the objective of verifying the > medium / long term stability and not the short term stability of the Super > version I agree it is improved.. > Luciano > > > Da "Bob kb8tq" kb...@n1k.org > A "Luciano Paramithiotti" tim...@timeok.it,"Discussion of precise time and > frequency measurement" time-nuts@febo.com > Cc > Data Tue, 5 Jun 2018 10:05:34 -0400 > Oggetto Re: [time-nuts] Raw phase data of super-5065 > Hi > > It is pretty well known that without “help” ( beyond the filter stuff on > the super) the 5065 has fairly poor temperature > stability and somewhat variable response to pressure and humidity. Taking > two samples right off the production line > likely would have given you different long term data as a result. > > If you are going to the trouble of watching these devices for a long time, > monitor temperature, pressure and humidity. > I suspect you will find correlations …. > > Bob > >> On Jun 5, 2018, at 5:44 AM, tim...@timeok.it wrote: >> >> >> Hi Attila, >> I am doing the long therm stability test on a couple of HP5065, one original >> A type, the second B or "super" compared with my best long therm stability, >> a GPSDO HPz3816A. >> This test will be 30 days long. It is a second test, with a second couple of >> HP5065A/B, to verify the long therm stability of both the version. >> >> Up to now the data available for version B or "super" only concerned the >> improvement of phase noise. >> >> From the first results it seems that the HP5065A is more stable within >> 30days than the modified version with the filter. >> It must be considered that the short-term stability of 5065 is better than >> the GPSDO / TICC up to 10-80k sec then, in this test configuration the valid >> data will be beyond these values. >> The results will be ready within 28 days and I will be happy to share them >> in order to have everyone's opinion. >> Regards, >> Luciano >> >> >> Da "time-nuts" time-nuts-boun...@febo.com >> A "Discussion of precise time and frequency measurement" time-nuts@febo.com >> Cc >> Data Mon, 4 Jun 2018 10:11:50 +0200 >> Oggetto [time-nuts] Raw phase data of super-5065 >> Hoi zäme! >> >> Would one (preferably multiple) of the owners of a super-5065 be so kind >> and share the raw phase data of an super-5065 against a stable reference >> with me? The longer the data trace, the better. >> >> Thanks in advance! >> >> Attila Kinali >> >> -- >> It is upon moral qualities that a society is ultimately founded. All >> the prosperity and technological sophistication in the world is of no >> use without that foundation. >> -- Miss Matheson, The Diamond Age, Neil Stephenson >> _______________________________________________ >> 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. > _______________________________________________ > 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. > <HP5065A-B vs Z3816A.xps>_______________________________________________ > 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.