Hi With most modern lightweight Rb's the OCXO is integrated into the same heater block as the physics package. That makes it a bit tough to heat one without heating the other. …
Bob On Mar 11, 2013, at 7:03 AM, Magnus Danielson <mag...@rubidium.dyndns.org> wrote: > On 10/03/13 16:17, Bob Camp wrote: >> Hi >> >> Remember - OCXO's are going to be acceleration sensitive. As you bump about >> on back roads, the oscillator is likely moving around by a few ppb. If you >> are after a hertz at 10 GHz, that's a lot. >> >> Your GPS will be off by a fairly predictable amount based on it's idea of >> it's location. If you have a 3M position accuracy, then you will likely have >> 10 ns of time error. With a 10 second loop, you are right back to a ppb. >> >> A good Rb should be able to hit a sub ppb accuracy at 10 minutes. > > If you keep the OCXO on the Rb heated, you should get quicker on the mark. > Then it is mostly the heatup of the physical package which consumes power and > time then. > > Then again, pre-heating with the car cuts down warm-up times. > > Cheers, > Magnus > > > _______________________________________________ > 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.
