If the unit cannot lock up to GPS, it may be sending bad electronic control voltage to the rubidium. I would look at the "lock" signal from the rubidium to see if its on or off.
If its off, I would disconnect the EFC voltage from the GPS unit to the FRK, and see if the rubidium locks (should happen under 5 mins from a cold start). A bad lamp can cause a lot of different problems. You also need to look at the xtal signal voltage test point on the FRK. Brian Glenn Little WB4UIV wrote: > I have a GPS disciplined Rubidium Standard. I know that it has a 1024 > week problem. The engine was made by Trimble. They cannot locate any > information on this engine. > > The time displayed is off by as much as 30 minutes in 24 hours. The > amount that the clock is off varies. The displayed frequency error > after cold power up on day 1 was 756 E-12. On day 2 it displayed 1256 > E-9. I suspect that the Rubidium standard has a problem. The Rubidium > standard id an FRK. > > What might be causing the problem with the time display? Could a bad > Rubidium lamp cause this? > > Thanks > 73 > Glenn > WB4UIV > > > > > _______________________________________________ > 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.
