I ran into a nice Oscilloquartz 2200 digital clock / precision crystal oscillator from the early 80's that is in need of some care.
Please let me know if you have any manuals / data sheets / catalog pages or other information to share. At the moment I'm working on the faulty power supply. Any schematics, also from a 2210 that appears to have the same PS would be very helpful. The 2200 houses a B-5400 high performance oscillator that has been reported here: http://tf.boulder.nist.gov/general/pdf/26.pdf Any other information, data sheets etc. would be nice. I tested the oscillator on an external power supply. After about a day of continous operation it was obviously still running in, but first ADEV mesurements pointed into the low E-13's. Unfortunetely, it stopped then drawing current, so I had to take it apart. Out came a nice dewar-packaged cylindrical oscillator housing. When I pulled it out, the heater windings unwound like an untied spring. That will be a challenge to get nicely rewound but should be possible. Any advice what glue to use for fixing them permanently on the housing are welcome. The culprit was a hermetic tantalum cap in the 10V reference circuit. Adrian _______________________________________________ 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.
