Re: [volt-nuts] What's the probability of a random used 3458A passing a Keysight calibration?

I think the only option for repair, out of warranty or out of repair agreement, is 'Per Incident' which the KS website lists as $2851.00. This is a 'one charge fits all' kind of repair price. It comes with a calibration as well. It's what makes the repair agreement attractive as 'insurance'

[volt-nuts] What's the probability of a random used 3458A passing a Keysight calibration?

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

Re: [volt-nuts] What's the probability of a random used 3458A passing a Keysight calibration?

Surely the AC errors if any must be associated with the A2 AC Convertor board - 03458-66502? Dave -Original Message- From: volt-nuts [mailto:volt-nuts-boun...@febo.com] On Behalf Of Dr. Frank Sent: 16 January 2018 22:39 To: volt-nuts@febo.com Subject: [volt-nuts] What's the probability

[volt-nuts] What's the probability 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's no chance to identify a refurbished or replaced board, other

Re: [volt-nuts] What's the probability of a random used 3458A passing a Keysight calibration?

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

Re: [volt-nuts] What's the probability of a random used 3458A passing a Keysight calibration?

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

[volt-nuts] What's the probability of a random used 3458A passing a Keysight calibration?

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

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 a newer Keysight. > > Dave > I meant to say, maybe an Agilent meter would not have the reliability problems of an

Re: [volt-nuts] What's the probability of a random used 3458A passing a Keysight calibration?

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

Re: [volt-nuts] What's the probability of a random used 3458A passing a Keysight calibration?

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 as easy. The high-frequency AC cal is more difficult. On

Re: [volt-nuts] What's the probability of a random used 3458A passing a Keysight calibration?

Forgot to add. All were purchased on theBay. Joe -Original Message- From: volt-nuts [mailto:volt-nuts-boun...@febo.com] On Behalf Of J. L. Trantham Sent: Monday, January 15, 2018 9:12 PM To: 'Discussion of precise voltage measurement' Subject: Re: [volt-nuts] What's the probability of a

[volt-nuts] What's the probability of a random used 3458A passing a Keysight calibration?

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,