Hi Alberto: I don't think so. The crystal oscillator is aging and so the EFC value should match the aging in the long run. See that plots at: http://www.rt66.com/%7Eshera/index_fs.htm
To see of a GPSDO is working compare it's 1 PPS output to the GPS 1 PPS. Have Fun, Brooke Clarke -- w/Java http://www.PRC68.com w/o Java http://www.pacificsites.com/~brooke/PRC68COM.shtml http://www.precisionclock.com Alberto di Bene wrote: >Didier Juges wrote: > > >>--- snip --- >>The question that comes up is: how do I know my GPSDSO is working and >>how do I evaluate its stability? >>--- snip --- >> >> > >Couldn't you plot the EFC value vs time, and check whether it tends >asymptotically towards a (pseudo-)stable value ? >Knowing the Hz/V parameter of the 10811 should also allow you to guesstimate >the quality of the lock obtained. > >73 Alberto I2PHD > > >_______________________________________________ >time-nuts mailing list >time-nuts@febo.com >https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > > > _______________________________________________ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts