Hi, they finish their life when the lamp fades out. When you stoke it up there is a lamp monitoring voltage that is about 10 volts when new but drops below 4 volts at end of life. Otherwise, if it will lock on it is probably a good unit. New users tend not to understand that the frequency trim only covers a range of a few millihertz, which is quite enough to set them right. I have seen comments like" it does not respond to the frequency trim..." by users that are used to OCXO standards. The manual is around. Cheers, Neville Michie
On 30/03/2009, at 8:41 PM, Ulf Kylenfall wrote: > > All, > > Does anyone have any experience with the Datum/Efratom LPRO-101 > Rubidium standard? There are large amounts of these on e-bay. > > The datasheet specifies life time to "at least" 10 years > and the one that I found on a flea market is dated 1999. > > I assume that they are replaced as a planned maintenance > and the unit that I found was said to be in good health. > > Comments invited > > Ulf Kylenfall > SM6GXV > > > > > _______________________________________________ > 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.
