Hello,
I have just uploaded to Didier Juges website the manual for the
Oscilloquartz 2200 with clock option 2205, complete with schematics.
Best regards,
Jean-Louis
On 21/01/2015 13:43, Tom Van Baak wrote:
Hi Adrian,
I have a working Oscilloquartz B-5400. A copy of the data sheet is at:
http://leapsecond.com/museum/osa5400/1982-OSA-B-5400-ds.pdf
but I do not have a manual for it.
Did you happen to take some photos when you did the repair? I'd like to see the
inside, but since mine is working I'm hesitant to open it and take a close
look. Also, what is your measurement and reference, where you can measure to
the low -13's?
Thanks,
/tvb
----- Original Message -----
From: "Adrian" <rfn...@arcor.de>
To: "Discussion of precise time and frequency measurement" <time-nuts@febo.com>
Sent: Tuesday, January 20, 2015 2:32 PM
Subject: [time-nuts] Oscilloquartz 2200 Clock / B-5400 Oscillator
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
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--
Jean-Louis Oneto
email: jl.on...@free.fr
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