[time-nuts] Symmetricom chip scale atomic clock

Jim Palfreyman jim77742 at gmail.com
Thu Apr 24 21:33:10 EDT 2014


Out of curiosity, what's the current price for one of these for a time-nut
to play with?

Regards,

Jim Palfreyman



On 25 April 2014 11:26, Said Jackson <saidjack at aol.com> wrote:

> Hi Magnus, Bob,
>
> Thanks much for your kind words.
>
> The failure rate is thankfully so low that we are not greatly alarmed, and
> Microsemi has been a champ in resolving any failures with/for us when they
> did show up. We are awaiting the results of the full re-qualify that
> Microsemi is doing on the CSAC and were going to announce the issue at that
> time..
>
> Bye,
> Said
>
> Sent From iPhone
>
> On Apr 24, 2014, at 17:41, Bob Camp <lists at rtty.us> wrote:
>
> > Hi
> >
> > I seem to have been in exactly the same position many times before and
> also wish you well in resolving this (as I’m *certain* will be the case).
> >
> > Bob
> >
> > On Apr 24, 2014, at 7:48 PM, Magnus Danielson <
> magnus at rubidium.dyndns.org> wrote:
> >
> >> Said,
> >>
> >> I recognize this situation so well. Feel with you on the issue and hope
> you find that it resolve itself nicely.
> >>
> >> Cheers,
> >> Magnus
> >>
> >> On 04/24/2014 10:50 PM, SAIDJACK at aol.com wrote:
> >>> Hello everyone,
> >>>
> >>> let me address the below claims and commentary which was posted without
> >>> first consulting with us.
> >>>
> >>> Microsemi has recently seen a slightly higher failure rate of the CSAC
> >>> oscillators than expected. A small percentage of our customers have
> been
> >>> adversely affected by this issue. We have been, and will continue to
> take care
> >>> of this issue when it happens to units we sold by doing a warranty
> exchange
> >>> of  the CSAC for the affected customer unit, even if it should fall
> out of
> >>> its normal warranty period.
> >>>
> >>> We believe in supporting our customers to the maximum extent possible,
> and
> >>> of course want to deliver a product that has the highest level of
> quality
> >>> possible. That said, we must remember that the CSAC technology is a
> ground
> >>> breaking, never-before-done in commercial quantities, absolutely new
> type of
> >>> oscillator technology, and being at the forefront of such a technology
> >>> sometimes  means there is a bit of a learning curve to deal with. This
> is one
> >>> of the main  reasons why no one else in the world besides Microsemi
> makes
> >>> CSAC type products  for commercial sale.
> >>>
> >>> So all in all, if a customer unit should get affected by this problem
> then
> >>> the issue will be addressed by us and Microsemi with a quick turn
> around
> >>> and a "no questions asked" approach, and we hope that this approach
> sets us
> >>> positively apart from the competition.
> >>>
> >>> Lastly, we received the below comments/explanation from Microsemi
>  about
> >>> this issue which we have permission to share with you, and this
>  should help
> >>> alleviate the problem for new orders.
> >>>
> >>> Sincerely,
> >>> Said
> >>>
> >>>
> ****************************************************************************
> >>> ****************************************
> >>> Some Symmetricom (now  Microsemi) Chip Scale Atomic Clocks have shown a
> >>> failure mode that will manifest  itself as an inability of the clock
> to achieve
> >>> atomic lock.  If the CSAC’s  telemetry string is monitored, the failure
> >>> mode will show up as a Status Level  8.  Microsemi’s investigation
> into the
> >>> problem uncovered three distinct  root causes, although the symptom
> the user
> >>> observes is always a Status Level 8,  regardless of which root cause
> is the
> >>> underlying issue.  It is important to  note that all three root causes
> are
> >>> process issues, not design  issues.
> >>> All three root causes  have been addressed, and Microsemi is currently
> >>> producing CSAC’s with all three  fixes implemented.  A full
> re-qualification of
> >>> the CSAC is also being done,  to ensure that the fixes are effective.
>  CSAC’
> >>> s already in the field that  exhibit this failure mode have been, and
> will
> >>> continue to be, replaced under  warranty.
> >>>
> ****************************************************************************
> >>> ****************************************
> >>>
> >>>
> >>> In a message dated 4/24/2014 10:16:25 Pacific Daylight Time,
> >>> lester at veenstras.com writes:
> >>>
> >>>
> >>> Affected Products: Jackson Labs or Symmetricom time/frequency
>  reference
> >>> boards based on Symmetricom chip scale atomic  clock
> >>> _______________________________________________
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