[time-nuts] Oscilloquartz 3210 Cesium Standard

Tom Van Baak tvb at LeapSecond.com
Wed Sep 3 21:01:57 EDT 2014

Hi Chris,

Sorry for a delayed reply. The OSA 3210 is one of the only cesium standards I don't have in the "museum". I've seen one or two on eBay over the past decade but not in worthwhile condition. I hope you can get yours working. If not, let me know...

The good news is that I have an original Oscilloquartz 3200 cesium manual. Today I scanned the first part of it for you. See:

If this is helpful to your efforts, I'll try to scan the schematics as well. The manual is an inch thick.

I don't know the model differences. I've seen 3000, 3020 and 3200, 3210, 3230, 3235 mentioned on the web. Maybe 3120. I'm also not clear about the differences in series-3000 vs. series-3100 vs. series 3200. If anyone knows, please post details.


----- Original Message ----- 
From: "Chris" <syseng.greenfield at btconnect.com>
To: <time-nuts at febo.com>
Sent: Wednesday, August 27, 2014 2:09 PM
Subject: [time-nuts] Oscilloquartz 3210 Cesium Standard

> Hi,
> I recently bought an Oscilloquartz 3210 cesium standard and although it does
> power up, it does not lock. All the parameters on the meter look 
> sensible, other
> than the 2nd harmonic, #9 parameter, which shows zero. Quart oscillator 
> output
> looks almost spot on in comparison with the lab Z3816. I have no info on 
> this
> unit at all, so this may either be a dead tube, or other electronic fault on
> one of the many pcb's in the system. Ion pump had a small reading on 
> power up,
> but now dropped back to zero.
> I am looking for a user guide for this unit, or even better, a manual 
> with theory
> of operation and setup info. Can anyone help with this, or perhaps suggest a
> source ?. Year of manufacture estimated 1984/85, from date code on ic's.
> I notice that the tube is from FTS, the same construction as in the FTS 
> 4060, but
> different part number and wonder if this was original fitment, or has been
> replaced at some stage...
> Regards & Thanks
> Chris Quayle
> Oxford, England

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