Looking for the input connectors for Agilent 34420A - Page 1
Forum section: electronics / repair

author: nadona
author_rank: Regular Contributor
timestamp: October 08, 2014, 09:55:14 pm
content: Hi,I am looking for the input connectors for Agilent 34420A. I'd like to make a few for different ends and lengths.Just something that fits to the terminal.Thank you in advance.

author: macboy
author_rank: Super Contributor
timestamp: October 09, 2014, 01:07:41 pm
content: Agilent/Keysight sells them directly. Part number 34104A, USD$125 each. They are likely proprietary, so you won't have any other choice.The instrument should include one one shorting block, and one cable with Kelvin connections (for 4-wire resistance measurements). This is all low-thermal stuff with pure copper used throughout.

author: nadona
author_rank: Regular Contributor
timestamp: October 10, 2014, 05:05:34 am
content: Quote from: macboy on October 09, 2014, 01:07:41 pmThank you.

author: HighVoltage
author_rank: Super Contributor
timestamp: October 10, 2014, 11:19:34 am
content: A friend of mine just bought this one:http://www.ebay.com/itm/95H8756-Agilent-Technologies-34104A-Low-Thermal-Input-Connector-For-34420A-/261510593052?pt=LH_DefaultDomain_0&hash=item3ce33efa1c

author: plesa
author_rank: Frequent Contributor
timestamp: December 06, 2015, 03:24:31 pm
content: I just make investigation and input connector used on Agilent 34420A and maybe Keithley 2182 seems to be LEMO V series connectors.Replacement is FVN (cable or short) and EVP (meter) connectors.http://www.lemo.com/catalog/ROW/UK_English/V_series_en.pdfFVN-XX-304-CLAC-xx-ZXX is probably 2V and xx depends on diameter of your cable.If someone has original cable please measure diameter of nut.

author: ManateeMafia
author_rank: Frequent Contributor
timestamp: December 07, 2015, 04:52:44 am
content: I can confirm the shorting plug for a 34420A works perfectly with a 2182.

author: ManateeMafia
author_rank: Frequent Contributor
timestamp: December 07, 2015, 04:58:30 am
content: If you are looking for Dimension A, I can measure it when I get home in about 3hrs.

author: ManateeMafia
author_rank: Frequent Contributor
timestamp: December 07, 2015, 08:52:24 am
content: I measure ~15mmThe Lemo part number on the plug is FVN.1S

author: engiadina
author_rank: Contributor
timestamp: December 07, 2015, 03:50:40 pm
content: Quote from: ManateeMafia on December 07, 2015, 08:52:24 amWell not quite ...Actually it isFVN.1S.304.CLYC37ZThen you get even the raw copper contacts ...

author: plesa
author_rank: Frequent Contributor
timestamp: December 07, 2015, 04:18:08 pm
content: Quote from: engiadina on December 07, 2015, 03:50:40 pmThat's a good point, that Lemo is not using pure copper contact and they are using beryllium bronze, bronze and brass.Info in official catalog (page 178)http://www.lemo.com/catalog/ROW/UK_English/unipole_multipole.pdfAccording to number it looks like really custom made connector for HP and not official in Lemo catalog ( V series housing, S series insert and contacts made from almost pure copper) So it will be probably better to buy replacement from Keysight.

author: alanambrose
author_rank: Frequent Contributor
timestamp: March 11, 2016, 10:39:12 am
content: >>> Actually it is FVN.1S.304.CLYC37ZCan I check - is this the part # taken off a kosher set of Keysight/Keithley test leads?TIA, Alan

author: plesa
author_rank: Frequent Contributor
timestamp: March 12, 2016, 05:18:03 pm
content: The PN does not contain information about copper contacts.Must be specfied separatelly.https://www.eevblog.com/forum/repair/hpagilentkeysight-34420a-nanovoltmicro-ohm-meter-repair/cable FVN.1S.304.CLYC37Z price 50 EURmeter input connector is EVP.1S.304.CLY price 40EURboth with copper contacts not gold plated.

author: alanambrose
author_rank: Frequent Contributor
timestamp: March 14, 2016, 03:47:41 pm
content: Many thanks plesa, btw where did you find it for 50 EUR - I'm getting £76 i.e. ~100 EUR. Keysight gave me these UK distributors:Aspen Electronics Ltd (Premium Partner)Amplicon Liveline LtdMicrolease Plcand Microlease for instance is quoting the £76/EUR 100 price?TIA, Alan