Emmanouil It sounds like you are very lucky to have obtained a working CS reference. I speculate it may be set for a different time scale. There is usually a setting that can be adjusted. Check the manual. That may be the harder item to find. Good luck. The other thing I have run into at least on HP 5061a is that the c-field was set for a different tube and that forced a offset that was large. Though I have to say .003 hz seems really large to me. Regards Paul WB8TSL
On Thu, Oct 31, 2019 at 8:02 AM EMMANOUIL MANTZARAS <[email protected]> wrote: > Hallo group > I recently acquired an FE-54440A cesium beam clock. I do not know nothing > about his history. Seems to be connected to the mains by the previous > owner (a > surplus broker). > The meter readings seems correct. Supply voltages are ok, Vac-Ion current > reading is about 0 (strange because that i believe that the unit was in > storage for a long time). > After about 20 minutes the cs and osc ovens stabilized. With loop open the > beam current peaks at the correct oscillator frequency. The unit turns in > "operate" condition when the loop is closed. The second harmonic level is > ok > with little fluctuation. With unit in "operate" condition and after 12 > hours > of warming, there is a constant frequency difference of about 0.003 hz > from my > two Z3801 gpsdos. Any idea about this condition? Any help is appreciated. > > Regards > > Emmanouil Mantzaras > sv1bke > > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
