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

SAIDJACK at aol.com SAIDJACK at aol.com
Tue Jan 18 19:37:08 UTC 2011


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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