Thanks for your answer. Actually, I use a 5334B counter locked on a GPS to record the output of the rubidium 24/7, with gate times of 10s and 100s . The measurements are constants between 10,000,000.002 and 10,000,000.004 Hz, the resolution is 1 mHz for 10s and 0.1 mHz for 100s. I have not enough records to see a drift.
In your opinion, with this method, when the Rb will become older, I will see some short "jumps" in frequency from time to time ? I agree this is an heavy method compared to your blink-ometer but I am still learning ! Claude ________________________________ De : paul swed <[email protected]> À : Claude Fender <[email protected]>; Discussion of precise time and frequency measurement <[email protected]> Envoyé le : Samedi 20 avril 2013 17h58 Objet : Re: [time-nuts] How dies a Rubidium ? In my experience with numbers of less expensive cel tower pulls, they blink out and re-ignite and then relock this is infrequent. But occurs more and more often. If RB is suspected of going to the darkside, I use the blink-ometer to catch this. What the heck is a blink-ometer? Simply one of those little pedometer counters that I have tapped into and through a opto coupler allow the blink to trigger a count. Happy to sell you one for $199 plus shipping and if you act now will include another for postage and handling.... The other clue is the lamp voltage. This is a relative clue if your unit even gives you access to it. The FRS start at 9 or so volts and seem to start to blink about 3. Its relative and your milage will vary. Regards Paul WB8TSL On Sat, Apr 20, 2013 at 5:13 AM, Claude Fender <[email protected]> wrote: Hi, > >I would like to know if there is a way to know if a Rubidium is at his end of >life or not : when it stops working, does this happen suddenly or are there >percursory symptoms ? >I am looking fora method that does not need to open the case (I have a 5680A >and I am waiting a Racal Dana). > >Thanks for your advices ! > >Claude >_______________________________________________ >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.
