----- Forwarded message from [EMAIL PROTECTED] -----
Date: Fri, 17 Oct 2008 12:02:48 +1300
From: [EMAIL PROTECTED]
Reply-To: [EMAIL PROTECTED]
Subject: Re: [time-nuts] Frequency Stability of Trimble Mini-T
To: Mike Monett <[EMAIL PROTECTED]>
Quoting Mike Monett <[EMAIL PROTECTED]>:
> "Lux, James P" <[EMAIL PROTECTED]> wrote:
>
> [...]
>
> > Even without TMR or other similar schemes, the probability of
> > upset IS pretty low. However, as Black or Scholes said (I can't
> > remember which), "One should not confuse very low probability with
> > impossible". If it absolutely, positively can't take any hit, then
> > some more work is involved.
>
> > James Lux, P.E.
>
> How do you do that? Any web links to study?
>
> As far as I know, it is impossible to absolutely guarantee against
> metastability. Do you wait a week for the metastability to settle?
>
> If zero probability of failure is so important, you would also have
> to include the probability of a solder joint opening, or a chip
> failing due to metal migration or latent ESD damage. That is never
> zero.
>
> Of course, after the system is perfect, someone will take it and put
> it on a destroyer running Windows:)
>
> Best Regards,
>
> Mike Monett
>
> _______________________________________________
>
Mike
You could always look at: United States Patent US4820939.
But dont bet on it.
Bruce
----- End forwarded message -----
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