Hi Dick, Back in 2004 Stefan Hegnauer reverse engineered the outer oven controller in the Z3801A and posted the schematics and a PSPICE simulation. Apparently they are no longer on the web, but his conclusion was:
"The outer oven of the Z3801A GPS disciplined crystal oscillator is used to keep the ambient of the inner oven of the oscillator (HP10811) at a roughly constant temperature of somewhere between +60...+65 °C. The exact value is not known to me. Because the Z3801A is specified from 0...+50 °C, and the HP10811 is specified for ambient temperatures of not more than +71 °C, I think this makes sense." Hope this helps, Richard > Hi folks, wondering if any of you can tell me the outer oven > temperature of the Z3801. Since the 10811As run in the range of 80-85 > deg C, I'm guessing it might be something like 40 deg C? > > Dick Moore > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
