[volt-nuts] Which meter?

[The-al-bundy@home.nl]

Hi Greg,

Well I've made a design with the LTZ1000A and must test it's stability. The 
best DVM we have is the 34401, but with the 6.5dig you don't get far with a 
LTZ1000 as DUT. So we need something better. As far as I've seen the only 
options are the 8508A and the 3458A.

The 8508A is relativly new (2002 I thought), so one would expect better 
specifications than the 3485A and more options like other connectivity than 
GPIB.
However the 3458A is already around there for >20years and it seems to be 
one of the best DVM. The 100k sample rate is a feature which could be handy 
in the future.

Money is not so much an issue, just we have to make a good investment for 
the next 5+ years or so.
Of course we expect to use the DVM more often for ultra stabile 
circuits/sources (in currents as wel as volts).

Thanks,
Bram


----- Original Message ----- 
From: "Greg Burnett" <gbusg at comcast.net>
To: "Discussion of precise voltage measurement" <volt-nuts at febo.com>
Sent: Saturday, November 14, 2009 6:52 PM
Subject: Re: [volt-nuts] Which meter?


> Hi Bram,
> If you want to make high-speed measurements, the Agilent 3458A is the 
> clear
> choice (because it can take up to 100,000 readings per second). The same
> reasoning would apply if you need to use your DVM to make precision
> digitization of waveforms. (For example the 3458A's triggered, digitized
> measurements can be used to evaluate the linearity of a triangle 
> waveform.)
>
> For basic DC linearity (e.g., from full-scale to tenth scale or lower), 
> the
> 3458A is as good as it gets, as far as I know.
>
> Having said that, there might be a particular application where the Fluke
> 8508A would be your best fit? But I'm not sure about that. Do you have
> specific measurement applications in mind?
>
> I've personally always been extremely impressed with the 3458A 
> performance,
> so unless I had a specific measurement application (that I'd researched 
> and
> found that was addressed better by the 8508A), I'd buy the 3458A.
>
> Best,
> Greg
>
> ----- Original Message ----- 
> From: "The-al-bundy at home.nl" <the-al-bundy at home.nl>
> To: <volt-nuts at febo.com>
> Sent: Saturday, November 14, 2009 8:03 AM
> Subject: [volt-nuts] Which meter?
>
>
> Hi,
>
> I'm at a point to purchase a new 8.5dig DVM. Choices are the (good old HP)
> Agilent 3485A or the Fluke 8508A. The Fluke is almost 2x as expencive...
>
> My feelings say that the 3485A is still the best one out there, is that
> true?
>
> Thanks,
> Bram
>
>
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