I have one of those modules but in a Telecom Solutions wrapping.
It seems like for your purposes, at least bypassing the output synthesis
would be a good thing.
Cheers,
Magnus
On 08/29/2014 10:06 AM, Javier Herrero wrote:
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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