On 24/01/14 09:12, Azelio Boriani wrote:
This issue has been discussed at length several times. Too much insulation is not necessarily desirable since the oscillator power has to be dissipated and the oven design of the MV89 wasn't meant to be put in a dewar. Better reduce the temperature gradient then fully isolate the OCXO. The upside-down position is not an issue in my opinion.
Running it upside-down is by itself not an issue, but do expect that the frequency will shift when you turn it over and do expect that it will be starting a new drift period from the new frequency until it has relaxed.
Always be careful with isolation and thermal loading, as the oven loop can turn nasty on you if you are not careful.
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.
