Hi Pops are indeed another reason to keep a GPSDO powered on all the time.
Bob > On Nov 7, 2014, at 2:44 PM, ed briggs <edbri...@outlook.com> wrote: > > I wanted to share an observation about my Z3816a which may be relevant to KS > 24361 users. > Both units use the same oscillator and GPS receiver. > > When I first powered up my Z3816a, I noticed there were very infrequent Time > Interval offset spikes > of 100 ns or more. Once every 4 days to start, then once a week, then > longer. > > Researching the time-nuts posting, I found others who had seen this and had > offered different explanations, > including bad GPS receiver, damage to connections during transit, receiver > overload, mistreatment by the surplus vendor. > > In my case, it was neither of these. Simply allowing the unit to run for a > month remove all the spikes. In my Z3816a now shows a predicted uncertainty > in the 100-200ns/24 hour range. No spikes. > > So, if you see similar spikes on your KS 24361, you might want to resist the > urge to power it off and 'try stuff' until next month. The oscillators in > these units may not have been used on 12 years, and it maybe they need time > (and a little controlled heat) to get comfortable in their new environment. > > This is offered in the hope it may save some unnecessary head-scratching, and > not as a refutation of alternative theories. > > Ed > > > > _______________________________________________ > 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.
