Hi As far as anybody knows (which *is* a big qualifier indeed ….), the TBolt family only does it’s “temperature compensation” stuff when it’s in holdover. While it’s locked, there *appears* to be no compensation being done. If it’s doing anything while locked, it’s learning what the TC is, so it can use that information while in holdover.
Bob > On Sep 12, 2020, at 3:52 PM, Matthias Welwarsky <[email protected]> > wrote: > > Kevin, > > how long has it been in storage? I expect the GPSDO doing quite clever things > to compensate for temperature effects. There may be some parameters stored on > the device and the characteristics of the OCXO may have changed after being > turned off for an extended period. > > Regards, > Matthias > > On Samstag, 12. September 2020 18:13:35 CEST Kevin Schuchmann wrote: >> Matthias, >> You are correct, having spent hours looking at all the stable areas >> and cooling and heating the gpsdo I find that when it reports that it is >> 116.25 F then it is stable. >> So now I guess I need to figure out why it is so picky. I will measure >> the current draw from a cold start and see if I see the oven warming up >> and then stabilizing and then heat and cool it and see how it reacts, >> and also look at the electronics and see if an area is overly sensitive >> to temperature. >> >> Thanks >> Kevin >> >> On 9/11/2020 2:26 AM, Matthias Welwarsky wrote: >>> On Freitag, 11. September 2020 01:08:09 CEST Kevin Schuchmann wrote: >>>> Guess my image didn't make it, I will add it as an attachment this time. >>> >>> The temperature curve seems to show some correlation to what is happening >>> with the DAC. Seems that the DAC and OSC jumps are mostly during periods >>> of some thermal perturbation. >>> >>> Regards, >>> Matthias >>> >>> >>> >>> _______________________________________________ >>> 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. > > > > > > _______________________________________________ > 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.
