John, I suppose this and all my measurenents are made in time stamp mode. Thanks for the work you have done. Luciano
Da "time-nuts" time-nuts-boun...@lists.febo.com A time-nuts@lists.febo.com Cc Data Tue, 8 Jan 2019 13:48:22 -0500 Oggetto Re: [time-nuts] Short term 10MHz source Hi Luciano -- Thanks for posting that. There's a subtle point about the noise floor that's forever been on my list of things to investigate: the noise floor should be lower in timestamp mode than in time interval (A->B) mode. That's because in timestamp mode there is jitter contribution only from a single measurement, whereas in time interval mode there is a measurement from each channel so you have two jitter components. So a guess is that the floor should be about sqrt(2) lower in timestamp mode. Someday I will test that theory. John ---- On 1/8/19 12:38 PM, tim...@timeok.it wrote: > > .gif of the TICC noise floor. > Luciano > > > Da "time-nuts" time-nuts-boun...@lists.febo.com > A time-nuts@lists.febo.com > Cc > Data Tue, 8 Jan 2019 18:31:02 +0100 > Oggetto Re: [time-nuts] Short term 10MHz source > > Hi Paul, > here the TICC noise floor. > Regarding the GPS/TICC versus a good Rubidium standard like the HP5065A , you cannot apreciate the Rubidium ADEV stability lower than 10Kseconds. > Luciano > > > Da "time-nuts" time-nuts-boun...@lists.febo.com > A "Discussion of precise time and frequency measurement" time-nuts@lists.febo.com > Cc > Data Sat, 5 Jan 2019 12:35:26 -0000 > Oggetto Re: [time-nuts] Short term 10MHz source > Hi All sorry for a new be question but what is a TICC regards Paul B UK > > -----Original Message----- > From: time-nuts [mailto:time-nuts-boun...@lists.febo.com] On Behalf Of Chris > Burford > Sent: 02 January 2019 03:56 > To: Time Nuts List > Subject: [time-nuts] Short term 10MHz source > > I have a situation in which I have access to a GPSDO 10MHz source but for > only about 10-12 hours at a time. My current residence does not allow a > permanent GPS antenna therefore I am limited in its use. > > I do realise that the long term stability of the GPSDO is somewhat superior > to a Rubidium source. I'm planning on using my TICC to validate both my > GPSDO and RFS. I'm aware that such a short "power on" period is somewhat > counterproductive but I have no other options. I'd like to know if a 6-8 > hour window for the GPSDO is sufficient for use as a 10MHz source for the > TICC. > > I appreciate any and all comments. > > Regards, Chris > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. > > > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. > > > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
