[time-nuts] MTBF (was Rubidium standard)
hmurray at megapathdsl.net
Thu Nov 19 09:06:46 UTC 2009
james.p.lux at jpl.nasa.gov said:
> What they do is buy good parts, use really skilled people and
> consistent processes, check everything 20 times (and how many times
> did we look at each solder joint), test the bejeebers out of the box
> at many stages, put a couple thousand hours on to get past infant
> mortality issues, and hope for the best.
I think you missed a critical step. When something breaks, a group of very
smart people carefully analyze the event in case they can find an interesting
How many other important steps have I overlooked?
> This is a somewhat conservative approach, which is why Mars rovers
> with a requirement for 90 day life are still going some 6 years later.
It's really neat to have a successful project like that happen occasionally.
These are my opinions, not necessarily my employer's. I hate spam.
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