Hi Attila, I am out of the business now, well retired, so my opinion carries
little weight,
:-)) but for whatever it does, my thought is that MTBF is a pretty useless
parameter in general. This is a relatively low volume unit manufactured by a
variety of different firms with each their opinion on the best optimum.
The statistical base to MTBF is faulty and in my opinion its only use is to
indicate where a design might be improved by changing the component mix. The
actual value that falls out of the end of the calculation for a desgn is
completely meaningless, but the non-tech bean-counters wanted a way to
justify more expensive designs, and the purchase of expensive kit.
I would doubt that anyone collected the data on completed units, though
there may have been spec values quoted. I guess in this usage area most used
expected them to fail and guarded against it by duplication, the exception
may be the space environment but I have no experience there.
Good Luck with it
Alan
G3NYK
----- Original Message -----
From: "Attila Kinali" <[email protected]>
To: <[email protected]>
Sent: Sunday, March 27, 2016 12:53 PM
Subject: [time-nuts] Reliability of atomic clocks
Moin,
Maybe someone here can help me.
I am looking for data on the reliability of atomic clocks.
I.e. how often and, if possible, how they fail.
Unfortunately, if I google for reliability then all that pops up
are descriptions of the accuracy and stability of atomic clocks.
If I go for MTBF I only get two papers from the 70s that tackle
the problem in general, without giving any data.
Does someone know where I could find current data about MTBF and
failure modes of atomic clocks? Given the number of 5071's installed
in labs, there must be at least some data on them....
Attila Kinali
--
Reading can seriously damage your ignorance.
-- unknown
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