[time-nuts] Symmetricom CSAC is Cs acting like a Rb unit

Poul-Henning Kamp phk at phk.freebsd.dk
Wed Jan 19 17:44:52 UTC 2011

In message <DBB70463B9D04F6589FBF97B2E4BE131 at vectron.com>, "Bob Camp" writes:

>Conventional gas cells have a finite lifetime on the

It used to be that Rb's would fail lock because the bulb dimmed from Rb
absorption into the glass, but I think they got that fixed with a teflon

Thes days most of them ultimately fail from the high operating temperature,
through a variety of mechanisms.

For the CSAC, my bet would be that the laser is the limiting factor.

Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.

More information about the time-nuts mailing list