[volt-nuts] JJA progress report

[cheater00 .]

How do you know the primary standard is not off? That is, how do you
know it's still "primary"? Maybe a gamma ray burst from a supernova
damaged some of the machinery inside, or a colony of crazy ants
crawled in and died inside.

D.

On Sat, Feb 15, 2014 at 10:10 PM, Joe Hobart <nova at npgcable.com> wrote:
>
> These devices are primary standards; you don't need three; you probably don't
> even need two.  If certain conditions are met, conditions you can check/verify,
> they will accurately generate the desired voltages.
>
> What you will probably want are at least three good zener type voltage standards
> and a constant temperature environment.  The three will serve as a day to day
> standard and reality check on the JJA.  And you need to really learn how to
> operate the JJA standard, so you can detect and correct any problems.
>
> Joe Hobart
> Flagstaff, Arizona
>
>
> On 2/15/2014 1:17 PM, Gordon DeWitte wrote:
>> Clearly need three (or some higher odd number) so they can vote...
>>
>> Gordon
>>
>>
>> On Sat, Feb 15, 2014 at 2:51 AM, Poul-Henning Kamp <phk at phk.freebsd.dk>wrote:
>>
>>> In message <1392413149.25851.YahooMailNeo at web142405.mail.bf1.yahoo.com>,
>>> Randy
>>> Evans writes:
>>>
>>>> We'll all probably want a spare unit also.
>>>
>>> Two, how can you know which one fails, if you only have two ?
>>>
>>> --
>>> 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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