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

paul swed paulswedb at gmail.com
Wed Jan 19 18:06:11 UTC 2011

Well just about the very next project for me is to try the trick magnus
Heating the bulb up on a failed unit.
Its life went down as would be typical with age.
I indeed have exactly run into the bad caps failures from the hot
environment and other cranky but typical old age issues. Like even solder.
Will be really really interesting to see if indeed heating the bulb gets the
system going again.

On Wed, Jan 19, 2011 at 12:44 PM, Poul-Henning Kamp <phk at phk.freebsd.dk>wrote:

> In message <DBB70463B9D04F6589FBF97B2E4BE131 at vectron.com>, "Bob Camp"
> writes:
> >Conventional gas cells have a finite lifetime on the
> >lamp.
> 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
> coating.
> 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.
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