attractive as 'insurance' on such an
expensive instrument.
Joe
-Original Message-
From: volt-nuts [mailto:volt-nuts-boun...@febo.com] On Behalf Of Dr. David
Kirkby
Sent: Tuesday, January 16, 2018 5:35 PM
To: Discussion of precise voltage measurement
Subject: Re: [volt-nuts] What
On 16 January 2018 at 23:06, Dr. Frank wrote:
> Surely the AC errors if any must be associated with the A2 AC Convertor
>>> board - 03458-66502? >> Dave
>>>
>>
> Why should this be a hardware error???
>
> It's much much more probable, that this is a natural drift phenomenon.
> This is 'as found'
Surely the AC errors if any must be associated with the A2 AC Convertor board -
03458-66502? >> Dave
Why should this be a hardware error???
It's much much more probable, that this is a natural drift phenomenon.
This is 'as found' and the 'as left' report is missing, that would tell
the whol
ility of a random used 3458A passing a
Keysight calibration?
I also saw this, so at least, they will have adjusted this range.
Yes you're right, the ADC is the A3 board. I confused that with the A5
controller board, which is the only one which had been redesigned to SMT
components.
There&#
I also saw this, so at least, they will have adjusted this range.
Yes you're right, the ADC is the A3 board. I confused that with the A5
controller board, which is the only one which had been redesigned to SMT
components.
There's no chance to identify a refurbished or replaced board, other
t
On 16 January 2018 at 17:33, Dr. Frank wrote:
> I meant to say, that the ADC ASIC determines crucially the stability.. and
> this special serial number US28032500 is eventually affected by the AN-18
> service note. So that may be the reason, why they claim 2100$ for repair,
> i.e. replacement of
I meant to say, that the ADC ASIC determines crucially the stability..
and this special serial number US28032500 is eventually affected by the
AN-18 service note. So that may be the reason, why they claim 2100$ for
repair, i.e. replacement of A5, the ADC PCB.. and that had nothing to do
with th
But the seller told me he had been quoted 2100 Euros for repair, so I
assume Keysight thought it needs repair, not just adjustment. Also, as far
as I know, all Keysight calibration do include adjustments.
I'd like one, but don't really have the money, but I thought the price
excessive.
Dave
Dr D
David,
that instrument on ebay is definitely from the agilent area, i.e. built
after 2000.
It is really ok, and does not need any repair.
Obviously, this AC range is a bit outside calibration @ 3V, 4MHz, but
that is normal after some years w/o adjustment, and not a defect at all.
Probably yo
ject: Re: [volt-nuts] What's the probability of a random used 3458A passing
a Keysight calibration?
On 16 January 2018 at 13:44, Dr. David Kirkby < drkir...@kirkbymicrowave.co.uk>
wrote:
> Maybe an Agilent meter might be a sweet spot - not as old as an HP, so
> but less stable than
On 16 January 2018 at 13:44, Dr. David Kirkby <
drkir...@kirkbymicrowave.co.uk> wrote:
> Maybe an Agilent meter might be a sweet spot - not as old as an HP, so but
> less stable than a newer Keysight.
>
> Dave
>
I meant to say, maybe an Agilent meter would not have the reliability
problems of an
On 16 January 2018 at 05:01, John Phillips wrote:
> my experience is that most of the eBay meters that do not give errors are
> very close to spec. These old meters do not drift as much as a new meter.
> If you have a good 10 volts and 10k resistor calibration is a snap...
> verifying cal in not
To: 'Discussion of precise voltage measurement'
> Subject: Re: [volt-nuts] What's the probability of a random used 3458A
> passing a Keysight calibration?
>
> Dave,
>
> I have three of these meters that have all been sent to Agilent/Keysight
> for the 'Agilent
e' other than the cost of the 'Repair Agreement' if
it ever fails during the covered time frame.
Hope this helps.
Joe
-Original Message-
From: volt-nuts [mailto:volt-nuts-boun...@febo.com] On Behalf Of Dr. David
Kirkby
Sent: Monday, January 15, 2018 3:56 PM
To: Dis
it ever fails during the covered time frame.
Hope this helps.
Joe
-Original Message-
From: volt-nuts [mailto:volt-nuts-boun...@febo.com] On Behalf Of Dr. David
Kirkby
Sent: Monday, January 15, 2018 3:56 PM
To: Discussion of precise voltage measurement
Subject: [volt-nuts] What's th
There's an "interesting" $5400 buy-it-now on eBay at the minute. It's
described as "Agilent 3458A 8.5 digit Multimeter CALIBRATED".
http://www.ebay.co.uk/itm/Agilent-3458A-8-5-Digit-Multimeter-CALIBRATED/
232593692038
When one reads the description, one can see it is an HP (not Agilent) 3458A,
th
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