no, this is work and it is not that accurate. that is just our best guess
(about 1 ppm) of an old fluke 732B. We compare with our other 732Bs. Any
available 3458As are monitoring the Flukes. Each hour a program picks up
the Mean Max Min standard deviation from each meter average them together
and p
Do you really have a .01 PPM voltage reference? A personal JJ? That's taking
this hobby to a new level.
>
> Daniel,
> They are made like that... Problem is with drift.
> When you cal a 3458A the first step is to short the inputs and wait for
the
> thermals to die. Then you do a Cal 0 and the inc
Daniel,
They are made like that... Problem is with drift.
When you cal a 3458A the first step is to short the inputs and wait for the
thermals to die. Then you do a Cal 0 and the incitement stores all the 0
offsets for that set of terminals. they you switch to the other set and do
it again.
Next st
While Googling, I came across this on Craigslist:
http://phoenix.craigslist.org/nph/tls/3919599836.html
Out of curiosity, I called the guy. He says he still has it. I decided not
to buy it, as the shipping would probably be twice the $10 he is asking.
Besides, I have the 895A now.
If anyone here
Joe,
Sorry to be so late answering this post but I'm 'tied up' right now and
can't get to all my data.
However, I have sent DMM's to Agilent (3458A), Fluke (289 and 8846A), and
Ametek - Solartron (7081).
Agilent was for their 'Agilent Cal' and it included 'As Found' and 'As Left'
data with 'adju
Sorry if i´m being naive, but what´s the difficuty of making a digital
equipment with a memory to store the offset of each scale ans subtract
it before sending to the display, no pot trimming involved?
Why aren´t all of the ones made after, let´s say, 1995, like this?
Daniel
Em 14/08/2013 20
On 14 August 2013 06:41, Charles Steinmetz wrote:
> Joe wrote:
>
>> The way I read this is that if I send them a DMM that is within spec, they
>> won't adjust it or provide pre/post data. Is this the case? If I spend
>> over
>> $200 sending a DMM to them, I want it adjusted to the best possible sp
You can get two digits from the last dial scale. I didn't say I believed
them :-) In fact, given the age and history of this thing, I'm surprised
that even the first digit is believeable.
Joe Gray
W5JG
On Wed, Aug 14, 2013 at 12:43 AM, Charles Steinmetz
wrote:
> Joe wrote:
>
> Just messing ar
