Re: [time-nuts] Symmetricom Launches CSAC Product for Precise Timing and Sync...
Quoting from a white paper on their site: "it uses a tiny hollowed-out silicon cube filled with cesium gas." On 01/18/11 20:17, paul swed wrote: 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, 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, bro...@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 To: Discussion of precise time and frequency measurement 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." ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Symmetricom Launches CSAC Product for Precise Timing and Sync...
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, 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, > bro...@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 > > To: Discussion of precise time and frequency > measurement > > 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." > > > > ___ > > time-nuts mailing list -- time-nuts@febo.com > > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > > and follow the instructions there. > > > > > > > > ___ > > time-nuts mailing list -- time-nuts@febo.com > > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > > and follow the instructions there. > > > > > > > > > > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Symmetricom Launches CSAC Product for Precise Timing and Sync...
Looks familiar Said. Regards - Mike Mike B. Feher, EOZ Inc. 89 Arnold Blvd. Howell, NJ, 07731 732-886-5960 office 908-902-3831 cell -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of saidj...@aol.com Sent: Tuesday, January 18, 2011 2:37 PM To: time-nuts@febo.com Subject: Re: [time-nuts] Symmetricom Launches CSAC Product for Precise Timing and Sync... 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) ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Symmetricom Launches CSAC Product for Precise Timing and Sync...
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, bro...@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 > To: Discussion of precise time and frequency measurement > 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." > > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > > > > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > > > > ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
