FS: SOLD --- Opportunity to own a legend: HP3456A One of two - Page 1
Forum section: electronics / general

author: nadona
author_rank: Regular Contributor
timestamp: April 04, 2013, 04:32:01 pm
content: This is a great opportunity to own a legendary voltmeter. See the photos and judge for yourself. No need for calibration. Within factory specs.After 48 hours it goes on eBay. I am offering $50 cheaper than my eBay price.When I buy used equipment off of eBay, it's a gamble. You can buy this machine here with a peace of mind.I'm asking $195, buyer pays shipping $25 within the US continent. First come first serve.PM me for the PayPal address or further inquiries.Regards.

author: IanB
author_rank: Super Contributor
timestamp: April 04, 2013, 04:47:54 pm
content: Hi Nadona,I'm trying to PM you but the forum PM feature seems to be broken. I can't get a message to send.Ian

author: nadona
author_rank: Regular Contributor
timestamp: April 04, 2013, 04:56:48 pm
content: I received your PM and sent you one back.

author: nixxon
author_rank: Frequent Contributor
timestamp: April 04, 2013, 05:07:20 pm
content: Which version is it?"Catalog Highlights:19863456a listed for $40003457a first introduced into the catalog and listed for $280019893458a was introduced for $600019933456a Last listed for $6400During its production run several versions were made, but a largenumber of internal changes were in the 2015A serial number series,and all changes are documented in the HP 3456a Service andCalibration manual. There were no changes to performancespecifications from the original design of 1981. The service manualat Agilent's website refers to the 2201A series and priormodels. Circuit operations characteristics as described by Clark,Ressmeyer and Jones in their paper are described in the servicemanual, with far more detail, particularly in the 'theory of operation'.2015A SeriesNB: notifiable featuresCooling fan and air filter in rear panelROM model changes2201A SeriesNB: noticeable featuresFan and filter now absentpower regulator LM323K exposed on rear panel2512A SeriesNB: noticeable featuresIntroduction of soft mechanical switches replace the original hardtactile-feedback switches on front panel ?2943A SeriesNB: noticeable featuresLast series prior to being discontinued ?"

author: nadona
author_rank: Regular Contributor
timestamp: April 04, 2013, 05:16:39 pm
content: The serial number is in the photos.

author: nadona
author_rank: Regular Contributor
timestamp: April 04, 2013, 06:06:51 pm
content: Sold. Thank you.

author: PA0PBZ
author_rank: Super Contributor
timestamp: April 04, 2013, 06:35:00 pm
content: Re: Your first picture, maybe it's just my ignorance but.... -1000 Ohm?

author: nadona
author_rank: Regular Contributor
timestamp: April 04, 2013, 07:00:29 pm
content: You're the only one who caught that. I was measuring a superconductor.

author: PA0PBZ
author_rank: Super Contributor
timestamp: April 04, 2013, 07:25:23 pm
content: Quote from: nadona on April 04, 2013, 07:00:29 pmGood explanation, I'll buy that

author: nixxon
author_rank: Frequent Contributor
timestamp: April 04, 2013, 09:40:48 pm
content: Quote from: nadona on April 04, 2013, 05:16:39 pmI couldn't spot it on my iPhone...

author: c4757p
author_rank: Super Contributor
timestamp: April 04, 2013, 09:45:40 pm
content: Quote from: PA0PBZ on April 04, 2013, 06:35:00 pmCan't see the picture any more, but my guess is Kelvin probes with the sense leads plugged in backwards.

author: nadona
author_rank: Regular Contributor
timestamp: April 04, 2013, 10:34:41 pm
content: I deleted the pictures after the unit was sold.