[time-nuts] chip scale atomic clock

[Bob Camp]

Hi

Not ment as a knock, just a comment that a lot of work is still being done on getting short term stability closer to a 100~1000X bigger device.

Bob


On Dec 26, 2009, at 10:36 AM, Robert Lutwak wrote:

> I pay pretty close attention to what people in this field are saying, and I've never heard anyone say "we'll get to 1e-11 short term stability at 1 second real soon now."
> 
> 1e-11 at 1 second is the XPRO spec (and 2X better than LPRO or PRS10). There are good (physics) reasons why those units all draw 100X more power than a CSAC.
> 
> CSAC is intended for portable battery-powered operation. Surely your basement has the space and wallplug power to support an LPRO. (p.s. don't cool the damn thing, heat it).
> 
> The cats were much happier during the CsIII development (see http://home.comcast.net/~rlutwak). It was bigger and warmer. Any Cat-Nuts out there who can help me find one with significantly lower SWAP?
> 
> -RL
> 
> At 10:08 AM 12/26/2009, you wrote:
>> Hi
>> 
>> 1x10-11 at 1 second,  going down by tau^0.5.
>> 
>> That makes them candidates for the basement system ....
>> 
>> Bob
>> 
>> On Dec 26, 2009, at 9:33 AM, Robert Lutwak wrote:
>> 
>> > How "good" do you want?
>> >
>> >
>> > At 09:13 AM 12/26/2009, you wrote:
>> >> Hi
>> >>
>> >> They still seem to be at the stage of "we'll get to good short term stability at 1 second real soon now".
>> >>
>> >> Bob
>> >>
>> >>
>> >> On Dec 26, 2009, at 8:23 AM, Ronald Held wrote:
>> >>
>> >> > I read about this a while ago. Has anyone seen anything recent about
>> >> > it, notably desktop or even portable units?
>> >> >        Ronald
>> >> >
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>> >>
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>> >
>> > -RL
>> >
>> > -----------------------
>> > Robert Lutwak
>> > Symmetricom - Technology Realization Center
>> > <mhtml:mid://00000000/mailto:RLutwak@Symmetricom.com>RLutwak at Symmetricom.com (Business)
>> > <mhtml:mid://00000000/mailto:Lutwak@Alum.mit.edu>Lutwak at Alum.mit.edu (Personal)
>> > (978) 232-1461                              (Desk)
>> > (339) 927-7896                              (Mobile)
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>> >
>> >
>> >
>> > -RL
>> >
>> > -----------------------
>> > Robert Lutwak
>> > Symmetricom - Technology Realization Center
>> > <mhtml:mid://00000000/mailto:RLutwak@Symmetricom.com>RLutwak at Symmetricom.com (Business)
>> > <mhtml:mid://00000000/mailto:Lutwak@Alum.mit.edu>Lutwak at Alum.mit.edu (Personal)
>> > (978) 232-1461                              (Desk)
>> > (339) 927-7896                              (Mobile)
>> > (978) 927-4099                              (Facsimile)
>> > _______________________________________________
>> > time-nuts mailing list -- time-nuts at febo.com
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>> 
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> 
> 
> 
> -RL
> 
> -----------------------
> Robert Lutwak
> Symmetricom - Technology Realization Center
> <mhtml:mid://00000000/mailto:RLutwak@Symmetricom.com>RLutwak at Symmetricom.com (Business)
> <mhtml:mid://00000000/mailto:Lutwak@Alum.mit.edu>Lutwak at Alum.mit.edu (Personal)
> (978) 232-1461                              (Desk)
> (339) 927-7896                              (Mobile)
> (978) 927-4099                              (Facsimile)
> 
> 
> 
> -RL
> 
> -----------------------
> Robert Lutwak
> Symmetricom - Technology Realization Center
> <mhtml:mid://00000000/mailto:RLutwak@Symmetricom.com>RLutwak at Symmetricom.com (Business)
> <mhtml:mid://00000000/mailto:Lutwak@Alum.mit.edu>Lutwak at Alum.mit.edu (Personal)
> (978) 232-1461                              (Desk)
> (339) 927-7896                              (Mobile)
> (978) 927-4099                              (Facsimile)
> _______________________________________________
> time-nuts mailing list -- time-nuts at febo.com
> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.
>