ebay 3458 for sale - Page 1
Forum section: electronics / general

author: acts238willy
author_rank: Regular Contributor
timestamp: December 15, 2017, 12:35:19 pm
content: I've got one of my lab machines for sale... it'sthe one for 4400 with the 4 year history. If itdoesn't sell, it will be for sale for a lot less here.

author: HighVoltage
author_rank: Super Contributor
timestamp: December 15, 2017, 08:55:42 pm
content: You have pictures or a link?

author: Brumby
author_rank: Unknown
timestamp: December 15, 2017, 11:13:37 pm
content: I'm guessing it's this one:https://www.ebay.com/itm/311988486823Edit: Maybe not.

author: chriswebb
author_rank: Unknown
timestamp: December 16, 2017, 01:56:55 am
content: Looks like the one below, since it matches his location.https://www.ebay.com/itm/hp-agilent-3458a-fresh-17025-calibration-with-4-year-history/132434711802

author: Bud
author_rank: Super Contributor
timestamp: December 16, 2017, 02:46:42 am
content: Is this called Lab ? It is disgustingly dirty... I cant imagine people can treat their equipment like this.

author: HighVoltage
author_rank: Super Contributor
timestamp: December 16, 2017, 10:53:25 am
content: Quote from: Bud on December 16, 2017, 02:46:42 amI have noticed this a lot on high end gear on ebay that it is sometimes like totally abused and dirty.Its beyond me why people would do such thing.

author: Mr. Scram
author_rank: Super Contributor
timestamp: December 16, 2017, 05:51:49 pm
content: It's been sold, so this thread is moot.

author: acts238willy
author_rank: Regular Contributor
timestamp: February 24, 2018, 03:06:59 pm
content: Hi, Bud!I have the equipment in the kitchen because it keeps +/- 1F.Lots of folks I sell to have pretty 'labs' that swing over 5 degrees.And some have their equipment in the basement, where it'spretty but at 66F... That gives them little cushion in the 5Callowed on either side of the cal temp, if it's cal'd at 33C. (3458)Some of the worst trash I've bought on fleabay was buffedto a high shine by flippers.. One didn't even have a referenceboard installed, some are drifters, etc., speaking 3458s here.I keep my lab mules upside down with the covers loose - gives1 minute access to the A/D and AC boards, where I do mostof my work.I do love to look at primo equipment in million dollar labs. I getall the Keysight flyers with the gleaming new boxes... justbeautiful. I wish that someday I might have a dream-lookinglab, with copper mesh walls and a JJA in the corner.I was in the army during the 1968 TET... got back in 69Jan.We had a saying... if it looks stupid but it works, it ain't stupid.So far, all of my 3458s have gone through 17025 cals with'no adjustment needed'.So.... keep polishing and buffing your gear so that it will look great.I really appreciate that.Just make sure it can perform better than my dirty stuff.

author: G0WZB
author_rank: Regular Contributor
timestamp: February 24, 2018, 04:08:54 pm
content: Still not sure what was for sale on Ebay and from what ebay account from the original post?

author: acts238willy
author_rank: Regular Contributor
timestamp: February 24, 2018, 04:23:34 pm
content: The last one sold was an ex-IBM 002 3458.Right now, I'm getting ready to swap mostof the boards that have been running for 2 yearsor more in the mules into a fresh 3458 I justgot off fleabay. Rather than waiting a year tosee if its boards are good....It should be for sale in a month or 2....

author: Shock
author_rank: Super Contributor
timestamp: February 25, 2018, 07:21:36 am
content: Do you do repair your own faulty boards as well Willy?

author: acts238willy
author_rank: Regular Contributor
timestamp: February 25, 2018, 11:29:36 am
content: Some of the components on the AC boards and A/D boards runquite hot... they tend to fail and give hard errors.The drift issue hinges on the 'magic' module. It's unobtainium.These were pretty solid, using chip fab technology that wason line in the 80s... (I started at IBM Burlington Vt in the 70s)There was aother run of these made for HP a long while ago, I think.When they ran short of them, it looks like they now have a kludgething daughterboard for both of the large A/D board modules.Net is, that if you're lucky enough to find a board with a hardfail and a supplier for this 1980s stuff, you can fix the faultand then watch for a few months to see if drift comes in.If it does, gold recovery time...and drift detection requiresa lot of trusted 10V standardsto be sure of what you're seeing.