[time-nuts] Oscilloquartz 3210 Cesium Standard

[Javier Herrero]

It seems that later, they decided to shameless use the 
FTS/Datum/Symmetricom FTS-5045 module 
http://www.gigatest.net/datum/5045txt2.pdf

The OSA-5585 I've has one inside, labeled Symmetricom everywere, and the 
Oscilloquartz contribution is a subrack containing the DC-input and 
AC-input power supplies, a controller that manages the FTS-5045 through 
its serial port, and some clock synthesis and distribution cards to 
provide PPS, 10MHz and 2.048MHz, with a spectral quality a lot worse 
than the output from the FTS-5045. I find the Oscilloquartz part of the 
equipment not very good nor very usefult to my purposes, to a point I'm 
thinking on to remove it completely an control/monitor directly the 
FTS-5045 with whatever thing with a serial port and a display (my 
Blackfin module, a Beaglebone o whatever similar)

Regards,

Javier

On 29/08/2014 1:23, Magnus Danielson wrote:
> FTS had a patent on microcontroller steered cesium, which could 
> naturally have limited the spreading time of that technology.
>
> Oscilloquartz at the time where more focused on the telecommunication 
> market and meeting the ITU-T G.811 PRC quality requirement, keeping 
> within +/. 1E-11 in frequency, and that is achievable with the analog 
> design, so no rush changing it.
>
> FTS and HP where more into time-keeping, so therefore improving the 
> design made more market sense for them.
>
> Anyway, that's about how I have perceived the market at the time.
>
> Cheers,
> Magnus
>
> On 08/28/2014 11:47 PM, Chris wrote:
>> On 08/28/14 19:53, Javier Herrero wrote:
>>> Hello,
>>>
>>> Then it is a quite different beast to the EUDICS 3120, that they also
>>> call OSA-3120... I note now that yours is a 3210, not 3120 :)
>>>
>>> Regards,
>>>
>>> Javier
>>
>> The 3210 looks like a much earlier design, prior to the inclusion of
>> microprocessor control. Date codes look mid eighties, by which time
>> companies like FTS did have microprocessor control. Maybe their later
>> design products ran in parallel because of gov or esa contracts. In
>> theory, the more straightforward hardware design should make it easier
>> to keep running, tube life permitting, assuming the info can be found.
>>
>> Thanks for sending it anyway - it all adds to the sum of knowledge...
>>
>> Regards,
>>
>> Chris
>>
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