Too funny. Well I've already got 5 meters of decent quality and I'm looking for more. It's also sad when I'm building up power supplies to get 1000v DC and 1000V AC at various frequencies to calibrate items like the DMM on my 2465BDM. I don't need 1000, buy hey I figured I may as well have overhead. Think those little gator clip wires from ebay are safe at 1000v, lol. I've already managed to kill 1000 piv rated diodes. I also partake in the crazy practice of joining my fixed 1000v supply with my 30 volt isolated lab supply to tweak to precise high voltages. Pretty stupid practice..but someones got to do it. The only saving grace is the current is at least limited to about 100ma..not that it would save me.
I have the dilemma that if I get a calibrated voltage reference and it disagrees with the 3457A then I'll naturally have to do one of two things. Send it off to Agilent to get the meter calibrated, or self calibrate so the 3457A agrees with my reference. The ladder has the advantage of not having a reference around that disagrees with the meter. If I send it off to Agilent I'll always question who was right, did the tech do a sloppy job..etc..etc. Ohh and the ranges also have to exactly agree with each other or it's back for calibration. Surprisingly they do now.
Insanity is doing the same thing over and over and expecting different results. Wonder how that plays in with calibration.
Jeff
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On 1/6/2013 5:02 PM, Don Black wrote:
he only sure way is to stick your finger in the light socket and guess.
Don Black.
On 07-Jan-13 10:08 AM, Dave Daniel wrote:
Unless all three voltmeters disagree. Then he needs n more until at
least two agree. Then again, what if more than one pair agree, but with
different values? Then I guess he needs a fifth meter which agrees with
one of the pairs which agree.
As you said, it's addicting and it makes my brain hurt.
Dave
On 1/6/2013 3:38 PM, J. L. Trantham wrote:
A man with one voltmeter knows what the voltage is. A man with two is
never
quite sure. Therefore he needs a third. :^)
Careful. This stuff is addicting.
Joe
-----Original Message-----
From: hp_agilent_equipment@...
<mailto:hp_agilent_equipment%40yahoogroups.com>
[mailto:hp_agilent_equipment@...
<mailto:hp_agilent_equipment%40yahoogroups.com>
] On Behalf Of Jeff
Machesky
Sent: Sunday, January 06, 2013 2:58 PM
To: hp_agilent_equipment@...
<mailto:hp_agilent_equipment%40yahoogroups.com>
Subject: Re: [hp_agilent_equipment] 3457A and other meter low
resistance
tips?
Thanks again for the info.
Hmm, to join such a group and come in as a total newb might be a
bit of
a humbling experience. Then again I have to admit I'm enjoying
attempting to get the precision. Even just working with the Hamon
dividers and monitoring temperatures and matching resistors to
precision
is kind of entertaining. It's however not very productive. I'm very
clear with my wife that my "hobby" is all about learning for me, it's
not about trying to improve the garage door opener. Once in a
while I'll
make something cool that gets used, but it's not my goal. I may join
them just to get an education on what I'm clueless about from their
point of view.
Thanks,
Jeff
On 1/6/2013 1:32 PM, Steve Byan wrote:
On Jan 6, 2013, at 3:07 PM, J. L. Trantham jltran@...
<mailto:jltran%40att.net>
wrote:
It's called 'volt-nuts'.
More fully, the volt-nuts mailing list -- volt-nuts@...
<mailto:volt-nuts%40febo.com>
To subscribe, go to
Best regards,
-Steve
-----Original Message-----
From: hp_agilent_equipment@...
<mailto:hp_agilent_equipment%40yahoogroups.com>
[mailto:hp_agilent_equipment@...
<mailto:hp_agilent_equipment%40yahoogroups.com>
] On Behalf Of Jeff
Machesky
Sent: Sunday, January 06, 2013 1:08 PM
To: hp_agilent_equipment@...
<mailto:hp_agilent_equipment%40yahoogroups.com>
Subject: Re: [hp_agilent_equipment] Re: 3457A and other meter low
resistance
tips?
Do they have a club for people with a certain number
of digits on their multimeters. I feel they should as it's a
whole new
world.
--
Steve Byan stevebyan@... <mailto:stevebyan%40me.com> >
Littleton, MA 01460
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