I bought my used 3458A ref board on eBay about 5 years ago from a seller in CO.
It is the genuine article. I can't see how or why anyone would bother to make a
really good fake board (complete with Vishay metal foil resistors) with a fake
LTZ 1000A and sell it for $99 If these boards were co
The original reference has a shorted Zener. I verified that with a curve
tracer (that was a couple years ago, but I remember it well.
I saw the post from Hank, and have emailed him about the 732A stuff that he
has.
I think my easiest and least expensive approach to getting this instrument
b
Didier only seems to have the User Manual ...
Regards,
David Partridge
-Original Message-
From: volt-nuts [mailto:volt-nuts-boun...@febo.com] On Behalf Of
ludger.len...@gmx.de
Sent: 14 September 2015 23:34
To: volt-nuts@febo.com
Cc: volt-nuts@febo.com
Subject: Re: [volt-nuts] Looking fo
FWIW-I recently contacted a seller of 3458A ref boards asking how/where he was
able to get them. He claims that he received many as NOS from a closed
assembly plant-you folks would know better than I if that story holds water. He
also says that many are purchased when folks upgrade to the 4ppm
Dave,
What is the problem with the original reference? I have not heard of too
many failing. There was also a reply from Hank on another message. Perhaps
he can provide the needed parts from a 732A?
Todd
On Mon, Sep 14, 2015 at 6:45 PM, Dave M wrote:
> After making a mess in my garage while se
You may look at KO4BB / Manual
http://www.ko4bb.com/getsimple/index.php?id=manuals
BR
PeLuLe
Gesendet: Montag, 14. September 2015 um 21:25 Uhr
Von: "Joe D'Elia"
An: volt-nuts@febo.com
Betreff: [volt-nuts] Looking for Datron 4808 Service Manual
Having recently acquired a Datron 4808 calibrato
After making a mess in my garage while searching for it, it turns out that
that my Fluke is a 731B. It appears to use the same Voltage Reference IC as
the 731A, so no big deal there.
I found a previous discussion about the 731/732 reference ICs. Seems that
the ICs are either from Motorola (MC
On 14/09/2015 12:08, Dr. David Kirkby (Kirkby Microwave Ltd) wrote:
On 13 Sep 2015 09:15, "M K" wrote:
There has been some of those references available second hand from ebay,
mostly pulled, but some may be counterfeit, so look for sellers with
pictures showing it as old..
Several sellers hav
Having recently acquired a Datron 4808 calibrator in need of restoration I
am now looking for a Service Manual (Vol 1 & 2) so that I can restore it to
pristine condition. If anybody has a PDF then I'd be very happy to get that,
alternatively if they have an actual manual I'd be happy to discuss pri
Have a bunch of Fluke 732a PARTS AND BOARDS IF THAT WOULD HELP.
Contract me directly via email.
Hank
KZ4HE
weys...@cfl.rr.com
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We upgraded about 20 3458As to the 4 ppm reference for a local equipment
rental co.
Others may have done the same to and are selling the old boards that may be
even more stable than 4 ppm because they have aged for years.
The difference between references is aging and screening.
On Mon, Sep 14,
In message
, "Dr.
David Kirkby (Kirkby Microwave Ltd)" writes:
>A used 3458A fetches several thousand USD,
There's actually one in france for EUR1500 right now...
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committ
On 13 Sep 2015 09:15, "M K" wrote:
> There has been some of those references available second hand from ebay,
mostly pulled, but some may be counterfeit, so look for sellers with
pictures showing it as old..
Several sellers have more than 1, but with one photo, so you would have a
hard time argui
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