[time-nuts] Symmetricom Launches CSAC Product for Precise Timing and Sync...

[paul swed]

Quick question is this a rb reference.
Looked at the symetricom site they never actually say or I missed it.

On Tue, Jan 18, 2011 at 2:37 PM, <SAIDJACK at aol.com> wrote:

> Here is a link to the press release with more technical details and
> pictures:
>
> _
> http://www.eetimes.com/electronics-news/4212176/Chip-scale-atomic-clock-app
> roaches-performance-of-modules-2_
> (
> http://www.eetimes.com/electronics-news/4212176/Chip-scale-atomic-clock-approaches-performance-of-modules-2
> )
>
>
> In a message dated 1/18/2011 11:32:33 Pacific Standard Time,
> brooke at pacific.net writes:
>
> Hi  Mark:
>
> I got the idea that it's a Rubidium clock.
>
> Have  Fun,
>
> Brooke Clarke
> http://www.PRC68.com
>
>
> Mark Spencer  wrote:
> > The long term aging spec is interesting to me, as a cesium  physics
> package is a
> > primary standard wouldn't there be an ultimate  limit to the total long
> term
> > aging ?  (I took a quick glance at  the full data sheet and didn't see
> any
> > reference to  this.)
> >
> >
> > ----- Original Message ----
> > From:  Julien Goodwin<time-nuts at studio442.com.au>
> > To: Discussion of  precise time and frequency
> measurement<time-nuts at febo.com>
> > Sent:  Tue, January 18, 2011 8:04:20 AM
> > Subject: Re: [time-nuts] Symmetricom  Launches CSAC Product for Precise
> Timing
> > and  Synchronization
> >
> > On 19/01/11 02:35, Pierpaolo Bernardi  wrote:
> >
> >> Though this could be of  interest...
> >>
> >>  http://www.insidegnss.com/node/2446
> >>
> >  "The SA.45s reportedly provides ... short-term stability (Allan
> >  Deviation) of 2E-10 @ 1 sec, long-term aging of 3E-10/month"
> >
> >  > From the data sheet of the bigger Rubidium micro-clocks:
> >
> >  SA.33/35m:
> > 1 Sec stability-<3E-11
> > 1 month aging - +/1  1E-10
> >
> > Neat, but only really of benefit to *really*  space/weight/power critical
> > devices.
> >
> > "The cesium atoms  are “excited,” or heated to a vapor state by a beam
> > generated from a  vertical-cavity surface emitting laser (VCSEL) that
> > passes between  upper and lower polymide heater/suspension strips. The
> > VCSEL was  designed by Sandia Labs, one of Symmetricom’s partners on the
> > CSAC  team."
> >
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