The time it takes to Lock has seemed to settle down to 20 minutes. That seems excessive if I read the manual correctly. How have other folks made out with theirs ?
73, Dick, W1KSZ -----Original Message----- >From: "Richard W. Solomon" <[email protected]> >Sent: Jul 25, 2009 10:09 AM >To: Discussion of precise time and frequency measurement <[email protected]> >Subject: Re: [time-nuts] LPRO-101 Status > >At first I did not monitor the Lock Voltage, just the frequency. After >it finally locked (~ 2 hours) the case temperature was not that hot. I >could leave my hand on it. >The frequency did vary about 10 MHz (+/- 200 Hz). The second time >I did monitor the Lock Voltage. It was stable (~4.6v) until Lock, when >it went to Zero. >I was hesitant to return it due to the Postage costs involved. Glad it >did Lock. > >73, Dick, W1KSZ > >-----Original Message----- >>From: Don Key <[email protected]> >>Sent: Jul 25, 2009 1:36 AM >>To: Discussion of precise time and frequency measurement <[email protected]> >>Subject: Re: [time-nuts] LPRO-101 Status >> >>I recently bought 2 LPRO-101's. The first worked perfectly, locking up >>within 5 minutes. >> >>The second one would not lock within 15 minutes, so I returned it (to China) >>for a replacement. As I didn't have a heatsink, I didn't want to leave it >>any longer. Besides, if it doesn't lock within 5 minutes, then I assume it >>is faulty. Instead of the frequency sweeping up & down, the Xtal volts >>started at around 6V2, then swept down to 0V & stayed there, leaving the >>frequency about 180Hz low, as seen on a HP 8591E analyzer. >> >>Out of interest, did your unit sweep up & down, or was it similar to mine? >> >>...Jim >> >> >>----- Original Message ----- >>From: "Richard W. Solomon" <[email protected]> >>To: <[email protected]> >>Sent: Friday, July 24, 2009 6:39 PM >>Subject: [time-nuts] LPRO-101 Status >> >> >>>I fired it up last night and it took about 2 hours to lock. >>> This morning it only took about 20 minutes to lock. >>> I guess I need to stir the electrons a bit more ?? >>> >>> It's sitting there on the counter, with a 1000 sec Gate time >>> and it is as accurate as I can measure (BTW, the counter >>> reference is a GPSDO - TrueTime). >>> >>> Looks like a keeper. >>> >>> 73, Dick, W1KSZ >>> >>> >>> >> >> >>_______________________________________________ >>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. _______________________________________________ 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.
