I have been in contact with Keysight US sales team and I'm getting ready to
sign a 5-year contract for yearly calibration and any service or repair needed
during the agreement period. The agreement is for the lowest level of
calibration service "Keysight Calibration Agreement" with a yearly
rement of some of
these "shorts" using an appropriate low-resistance instrument.
Jeremy
N6WFO
On Sat, Nov 11, 2017 at 8:09 AM Don@True-Cal <truecalservi...@gmail.com>
wrote:
> Mark,
> I would recommend duplicating the Fluke 8508A-7000K 4W Short
> Calibration Board design. T
Mark,
I would recommend duplicating the Fluke 8508A-7000K 4W Short Calibration
Board design. This board fits my 3458A & 3457A exactly and drops in place
nicely from the top after the binding posts are opened sufficiently. I also
have the banana plug style 2001-182-01B Cal Short that fits my
I will argue that this issue is extremely relevant, especially in low voltage
and low resistance measurements. You are correct in your position if the entire
junction is in thermal stability. If however, the junction is exposed to a
sudden change in temperature, air drafts being the most
Randy,
Here is the Cal Lab standard solution but the most expensive:
http://us.flukecal.com/secure-download?u=http%3A%2F%2Fdownload.flukecal.com%2Fsecure%2F54407002iseng0200.pdf%3Fnvb%3D20150721204511%26amp%3Bnva%3D20150721210011%26amp%3Btoken%3D0a3239567a669e8c502a5n=44512r=Literature
The
Steve,
I don't have immediate access to the User's Guide right now to help you with
the exact front panel procedure but you can fully program multiple commands
into the numbered keys via front panel. I used the front panel to program the
#1 key for best resolution DCV measurements as defined
The 3458A DISP? command, rather entered from the front panel or via a GPIB
Command is not adequately discussed in the User's Manual IMO. There are four
numeric values 0,1,2 3 plus the ability to enter a string value as mentioned
below. All four values are supported via the GPIB, but only 0,1 2
Charlie,
Did my reply to your question along with my lab temperature graph link come
through? Just checking as there has been some issues with the posts.
I don't like the feature where you don't see your own posts.
Don
-Original Message-
From: volt-nuts
Hi Charlie,
Yes, in the summer time my lab runs between ~24.5 26.5 C with an occasional
excursion beyond either of those limits on extreme days. It is a basement
(walkout type) lab with ceramic tile floor which helps account for the muted
extremes, and also not having an extreme hot or cold
Woops sorry, meant to type don't use an NPLC setting over 300 (5-sec) not
5-min. Actually, with AZERO=on, I guess that's 5 seconds of integration over 10
seconds or time.
Don
-Original Message-
From: volt-nuts [mailto:volt-nuts-boun...@febo.com] On Behalf Of Charles Black
Sent: Friday,
I have included a link to an ~30-hour measurement run that I consistently do
that should give you some idea of expected measurement drift over time.
Virtually all of the measurement drift is due to the 3458A internal temperature
differences around the 7V reference caused by ambient temperature
good
temperature variations from day to night, but less inside the house.
I need to figure out how to share files in Dropbox since I don't have my own
web site. Good idea.
thanks,
Randy
On Wed, Aug 27, 2014 at 7:40 AM, Don@True-Cal truecalservi...@gmail.com
wrote:
I have included a link
more than a year using them.
Gesendet: Montag, 25. August 2014 um 06:33 Uhr
Von: Orin Eman orin.e...@gmail.com
An: Discussion of precise voltage measurement volt-nuts@febo.com
Betreff: Re: [volt-nuts] 732A and Prologix received
On Sun, Aug 24, 2014 at 1:46 PM, Don@True-Cal truecalservi
received
On 8/25/2014 11:02 AM, Don@True-Cal wrote:
Silver or Gold plating on the terminal or wire will introduce the
undesirable dissimilar metal properties, both at the plating junction
and at the plating metal to DUT terminal.
Why?
Any Seebeck effect is immediately offset in the opposite
Randy all,
You have correctly concluded that some (maybe not all) of your measurement
problem is thermal EMF being added or subtracted in series within your
measurement interconnect. This thermal EMF is generated at the junction of
dissimilar metals when accompanied with thermal gradients
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