Re: nice DVM

On Fri, 21 Sep 2007 10:05:36 -0700, Joerg
<notthisjoergsch@xxxxxxxxxxxxxxxxxxxxx> wrote:

Jim Yanik wrote:

John Larkin <jjlarkin@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote in
news:leu5f3p0o1l6r797oukq5j60hfmbdr3dir@xxxxxxx:


On Thu, 20 Sep 2007 20:56:53 GMT, Joerg
<notthisjoergsch@xxxxxxxxxxxxxxxxxxxxx> wrote:


John Larkin wrote:


http://www.keithley.com/products/dmm/dmms?mn=2100120


Neat.



Introductory price is $795 for another week or so. I just got a few,
one for each of my engineers. The packaging and display are beautiful,
and it seems to work nicely, once you figure out the menus, which are
obtuse at Agilent-like levels.

Comes with USB and a datalogger program, which I haven't tried yet.

The manual, pdf only and cleverly hidden on the terrible Flash
autostart CD, looks almost like it wasn't written in native English.
It has chapter headings like "How To Measure The Continuity."

It *is* made in Taiwan.


Maybe a re-branded local product from there?

I guess we'll all get used to "special English". When I come back from a
trip and forget to plug in the USB cable for my scope the PC says "DSO
not connect". But those instruments become quite international. Mine
came with UK and German power plus (no US plug...) and the screen was
set to Espanol.

Also interesting: it's not ROHS (has lead, mercury, cadmium, Cr4,
PBB's, and PBDE's) and uses old-fashioned AC votage jumpering, ie it
has a power transformer.

John



I don't think you want to use a switcher PS for a sensitive voltmeter.


Definitely not a switcher wall wart. Not in a lab where analog stuff
happens. I have a special mains connector box in the lab for cases where
I have no choice. Very heavily "toroided". One of the first questions I
want answered before buying anything is whether it has a built-in power
supply.

We use switcher warts for all our digital delay generators and
fiberoptic gadgets, and get jitters in the single digits of
picoseconds. It's not all that many dB separating switcher noise from
all the other crud floating around these days.

John

.

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