[volt-nuts] 3458A - To Modify or Not To Modify?

[Steve]

Joe,

I'm happy to be able to help, that's what the hobby is all about! It would be interesting to see how far off your meter appears to be when using the data from my chip. I wonder if Loveland keeps any data on the cal constants. It would be interesting to see the range of values over 10's or 100's of units.

Steve


On Nov 7, 2011, at 7:41 PM, "J. L. Trantham" <jltran at att.net> wrote:

> Steve,
> 
> Once I get my new chips and install the sockets, I'll burn one with your
> image and see what happens.  If I am correct, I suspect it will work fine
> but not be accurate.  I'll also do a simple 'cal' with my 10K resistor (good
> to a few ohms) and 10 VDC reference (good to about 20 uV I think) and see
> what happens as well.
> 
> Thanks for the images.  I really appreciate your help.
> 
> Joe
> 
> -----Original Message-----
> From: volt-nuts-bounces at febo.com [mailto:volt-nuts-bounces at febo.com] On
> Behalf Of J. L. Trantham
> Sent: Monday, November 07, 2011 7:37 PM
> To: 'Discussion of precise voltage measurement'
> Subject: Re: [volt-nuts] 3458A - To Modify or Not To Modify?
> 
> Steve,
> 
> Got em.  U132 image is TOTALLY different from mine and much more of what I
> expected.
> 
> I re-read U132 and it is somewhat different every time I read it.  Sounds
> like it is 'toast'.
> 
> Joe
> 
> -----Original Message-----
> From: volt-nuts-bounces at febo.com [mailto:volt-nuts-bounces at febo.com] On
> Behalf Of Steve
> Sent: Monday, November 07, 2011 7:20 PM
> To: Discussion of precise voltage measurement
> Subject: Re: [volt-nuts] 3458A - To Modify or Not To Modify?
> 
> Joe,
> 
> On the way!
>