In italian: <http://www.crit.rai.it/eletel/2012-1/121-2.pdf> Can't find it in english...
On Mon, Apr 4, 2016 at 9:28 PM, Magnus Danielson <mag...@rubidium.dyndns.org> wrote: > Hi Hal, > > On 04/04/2016 05:39 AM, Hal Murray wrote: >> >> >> Has anybody studied what happens when a GPSDO comes out of holdover? Has >> anybody seen any specs? I don't think I have. >> >> I think you have a choice of quick recovery for time or frequency, but you >> can't get both. >> >> Suppose your setup has been in holdover for a while. The frequency is >> slightly off. The time offset of the PPS pulse will be the integral of >> the >> frequency offset. >> >> What happens when you come out of holdover? If you fix the frequency, the >> PPS will stay off. >> >> Suppose the PPS has drifted by 1 ns. If you correct that in 1 second, the >> frequency will need to be off by 1E9 during that second. > > > The RAI laboratory in Torino have made such tests and published measurements > and recommendations. For a long time it was only available in italian, but > there is now an english version available. > > Cheers, > Magnus > _______________________________________________ > 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.