Hi Adrian, as you know, to get real data up to 100K sec range, you should acquire at least 500K 1M sec. I say this from my personal experience. Soon I will have my 30 days run for both the A and B version of the HP5065. Very interesting the response of the GPSDO in the range 1 to 100 sec that I had never had the chance to see for lack of an instrument as your A7. ciao, Luciano
Da "time-nuts" time-nuts-boun...@febo.com A time-nuts@febo.com Cc Data Fri, 8 Jun 2018 15:46:50 +0200 Oggetto Re: [time-nuts] Raw phase data of super-5065 This is a 6 days run of a modified 5065'B' against GPS. Adrian Am 08.06.2018 um 14:05 schrieb tim...@timeok.it: > 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. > > > _______________________________________________ > 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.