[volt-nuts] HP 3458A DC current accuracy

Steve steve-krull at cox.net
Fri Jul 13 16:42:06 UTC 2012


I avoided the effects of the most recent one by sneezing at exactly the right time. Not a popular thing to do at the dinner table but when ya gotta sneeze, ya gotta sneeze!

Dave, if we didn't exist who would drink the beer???

Steve


On Jul 13, 2012, at 11:23 AM, Artekmedia <henderson47 at embarqmail.com> wrote:

> Actually it is pretty easy to avoid leap seconds as they are usually introduced on June 30 or Dec 31 and only 25 leap seconds have been introduced in the last 40 years, the most recent one on June 30th, 2012...given that figure,  the implied error due to leap seconds is much much less than the simple example below.
> 
> Dave
> Now my head is beginning to hurt as I ponder the reasons why man exists and the statistical probability of sentiment life in the rest of the universe.  I am now going to find a beer and kill off a few of my 1.2 x 10^11 brain cells..hopefully I will get the ones that care about this stuff at all.
> 
> 
> On 7/13/2012 10:49 AM, Artekmedia wrote:
>> There are 1,209,600 seconds in a fortnight (14days/fortnight x 24 hours/day x 60 min/hour x 60 seconds/min) so the implied error is a bit less than 1PPM.
>> 
>> 
>> Dave
>> 
>> "Experience keeps a dear school ..but a fool learns in no other" ..Ben Franklin
>> 
>> 
>> On 7/13/2012 8:09 AM, Steve wrote:
>>> But what if a leap second occurs during the fortnight the standard is being set? ;)
>>> 
>>> Steve
>>> 
>>> 
>>> 
>>> On Jul 13, 2012, at 7:22 AM, "Poul-Henning Kamp"<phk at phk.freebsd.dk>  wrote:
>>> 
>>>> In message<4FFFEBEC.8030802 at embarqmail.com>, Artekmedia writes:
>>>> 
>>>> Yes, I'd expect the last non-metric country in the world to go for that :-)
>>>> 
>>>>> Coulombs per fortnight to be sure :-)
>>>>> 
>>>>> On 7/13/2012 2:40 AM, Poul-Henning Kamp wrote:
>>>>>> In message<CAE6XXrjKES2=BPCNyzOcbXFM73+4ztOTAkUEcTTaqTsDuvrJGw at mail.gmail.com>
>>>>>> , Will writes:
>>>>>> 
>>>>>>> No practical quantum Ampere so far?
>>>>>> It has always surprised me that the Ampere was not defined in terms of
>>>>>> electron charges per second...
>>>>>> 
>>>>> -- 
>>>>> Dave&   Lynn Henderson
>>>>> Manuals at ArtekMedia.com
>>>>> www.Artekmedia.com
>>>>> PO Box 175
>>>>> Welch,MN 55089
>>>>> 
>>>>> 
>>>>> _______________________________________________
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>>>>> 
>>>> -- 
>>>> 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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>> 
> 
> -- 
> Dave&  Lynn Henderson
> Manuals at ArtekMedia.com
> www.Artekmedia.com
> PO Box 175
> Welch,MN 55089
> 
> _______________________________________________
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