Hi 6.0 to 7.0 volts is a *very* typical lamp voltage on an early LPRO.
Later production runs did something that bumped the number up to around 9 volts. I've never seen any real data showing that the 9 volt parts are actually any better (or worse) than the 6.5 volt parts. The change could have just been a resistor value on a buffer amp... Bob -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of J. Forster Sent: Monday, August 27, 2012 9:34 PM To: Discussion of precise time and frequency measurement Subject: [time-nuts] Datum Lamp Voltage Hi, I'm just powering a new to me Datum Rb, Type 102500-001, LPRO for the first time. The unit locks up quickly, and after about an hour, I checked the Lamp voltage. My unit is sitting at 6.9 VDC. >From the manual on Didier's site, below 3.0 or over 14 indicate failure. Does anyone know whether the measured voltage should be for a new unit? I'm trying to guestimat the remaining life. Thanks, -John ============ _______________________________________________ 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.
