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 .

Hello, I've some manuals from an OSA-5585, one of them for the EUDICS 3120. The thing that Symmetricom calls EUDICS-3120 really is a FTS-5045 module (Symmetricom in my case), that I think that it is the same that is inside the FTS-4060. It seems that one common problem with these, discuted some times in the list, is an STEL-1173 IC that has a failure mode in which the outputs stop working (one after another, not all at same time :) ). Regards, Javier On 27/08/2014 23:09, Chris wrote: > 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 > . > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there.

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: http://www.leapsecond.com/museum/osa3200/ 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. Thanks, /tvb ----- Original Message ----- From: "Chris" <syseng.greenfield@btconnect.com> To: <time-nuts@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

Nice scan Tom. Clean. I most likely will never run across either unit. But always good to read about them. Regards Paul WB8TSL On Wed, Sep 3, 2014 at 9:01 PM, Tom Van Baak <tvb@leapsecond.com> wrote: > 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: > http://www.leapsecond.com/museum/osa3200/ > > 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. > > Thanks, > /tvb > > ----- Original Message ----- > From: "Chris" <syseng.greenfield@btconnect.com> > To: <time-nuts@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 > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there.