Hi Luciano, This reply is general in nature as there may be others interested. I have two late generation HP 3455As and three HP 3456As that are in excellent physical condition, always used in a lab environment and stored in the lab storeroom for the last decade, never in the hands of a reseller. They all currently work and measure surprisingly accurate even after being stored. I have been procrastinating about reconditioning all of them electrically and calibrating them for resale. Some of the hesitation on doing a complete restore job (all new electrolytic, contact cleaning, line filter, fan, etc...) like I have done on several 3458As is the relative low selling price even after a restore job. Either model will tromp the HP 34401A other than calibration effort/time and the 3455A is known to be outstanding in AC measurements (not a TC though). When still in use, they were on 24/7 for many years and all have EXCELLENT stabilized voltage references and will return to that stability after a few months of operation. I have already started a burn-in on all units prior to calibration. They have been on for 3-weeks now, all working. The considered rebuild job is primarily for reassurance the instrument will perform well for many more years.
My hesitancy to rebuild also considers that maybe the buyer would rather do it himself after buying the unit at a lower price. I'm retired now and my time is a labor of love for these instruments and I can put the time into them that I know can never be recovered. The parts, on the other hand, I do need to recover and that will add about $120 US per unit. The going price on eBay for either model seems to be $150 - $300 for working units. I would like to get the higher end of that for mine working and calibrated but no rebuild. Just something for you to consider. Will answer all questions. Regards, Don Johnson Midwest, USA -----Original Message----- From: volt-nuts <[email protected]> On Behalf Of [email protected] Sent: Tuesday, September 01, 2020 6:45 AM To: [email protected] Subject: [volt-nuts] Fluke 8506A looking Hi, I am looking for a Fluke 8506A. I bought one on ebay but it came without the AC / DC thermal converter and it didn't even work in DC. I kept it for spare parts but now I want one cheap. If you have one or you know where I can go, thank you. My Agilent 34401 has quite disappointed me because in ACV it is a disaster in both low-level accuracy and frequency response. My Fluke 8502 with the thrue rms converter in comparison is very flat 10Hz - 50kHz and over. The HP when measuring 12V for example becomes a 5 1/2 digit while the Fluke remains 6 1/2 digit. So my question is: considering AC DC accuracy and stability what are the best 6.5 digits multimeters? have a nice day, Luciano Luciano P. S. Paramithiotti [email protected] www.timeok.it Da "volt-nuts" [email protected] A [email protected] Cc Data Sat, 22 Aug 2020 12:00:02 -0400 Oggetto volt-nuts Digest, Vol 129, Issue 7 Send volt-nuts mailing list submissions to [email protected] To subscribe or unsubscribe via the World Wide Web, visit http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com or, via email, send a message with subject or body 'help' to [email protected] You can reach the person managing the list at [email protected] When replying, please edit your Subject line so it is more specific than "Re: Contents of volt-nuts digest..." Today's Topics: 1. Spade lug/Digistand 6406 manual ([email protected]) 2. Re: Spade lug/Digistand 6406 manual (Andreas Bergmann) ---------------------------------------------------------------------- Message: 1 Date: Sat, 22 Aug 2020 14:35:31 +0200 From: [email protected] To: [email protected] Subject: [volt-nuts] Spade lug/Digistand 6406 manual Message-ID: <[email protected]> Content-Type: text/plain; charset=utf-8 Thanks to all those who have also answered me directly.(spade Lugs) At a flea market I bought two references, one for voltage and other for current, Digistand 6406 and 6426 respectively. I wrote to the manufacturer for the manuals and he sent me the one for 6426 but he told me that he did not find the one that interested me most , ie voltage reference 6406. I repaired both power supplies that had shorted electrolytic capacitors and for one of them I had to replace the custom power transformer. Now they both work but the voltage calibrator needs to be calibrated. Inside are a handful of trimmers but no indication of their function. Calibration is not possible without manual. Extreme ratio I want to ask you if any of you have this manual. Thank you, Luciano Luciano P. S. Paramithiotti [email protected] www.timeok.it Da "volt-nuts" [email protected] A [email protected] Cc Data Thu, 13 Aug 2020 12:00:02 -0400 Oggetto volt-nuts Digest, Vol 129, Issue 6 Send volt-nuts mailing list submissions to [email protected] To subscribe or unsubscribe via the World Wide Web, visit http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com or, via email, send a message with subject or body 'help' to [email protected] You can reach the person managing the list at [email protected] When replying, please edit your Subject line so it is more specific than "Re: Contents of volt-nuts digest..." Today's Topics: 1. Spade lug ([email protected]) 2. Re: Spade lug (Lou Amadio) 3. Re: Spade lug (Jason Watson) 4. Re: Spade lug (Andreas Bergmann) 5. Re: Spade lug (Tom Knox) ---------------------------------------------------------------------- Message: 1 Date: Thu, 13 Aug 2020 10:01:22 +0200 From: [email protected] To: [email protected] Subject: [volt-nuts] Spade lug Message-ID: <[email protected]> Content-Type: text/plain; charset=utf-8 Hi all you, I am looking some pure Copper spade lug for metrology measurements. Up now I have not found it on the web. Can you help me? Luciano Luciano P. S. Paramithiotti [email protected] www.timeok.it ------------------------------ Message: 2 Date: Thu, 13 Aug 2020 19:57:16 +1000 From: Lou Amadio <[email protected]> To: [email protected], Discussion of precise voltage measurement <[email protected]> Subject: Re: [volt-nuts] Spade lug Message-ID: <caju4ahcxeostc034tkwcjo6nu5v5hv3rx92x7e7kapky4pq...@mail.gmail.com> Content-Type: text/plain; charset="UTF-8" Hi Luciano Try the Metrology thread on the EEVBLOG forum. There were some available sometime ago. Post a request and you might get lucky. Lou On Thu, Aug 13, 2020 at 6:02 PM <[email protected]> wrote: > > Hi all you, > > I am looking some pure Copper spade lug for metrology measurements. > > Up now I have not found it on the web. > > Can you help me? > > Luciano > > Luciano P. S. Paramithiotti > [email protected] > www.timeok.it > _______________________________________________ > volt-nuts mailing list -- [email protected] > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com > and follow the instructions there. > ------------------------------ Message: 3 Date: Thu, 13 Aug 2020 08:08:24 -0400 From: Jason Watson <[email protected]> To: Discussion of precise voltage measurement <[email protected]> Cc: [email protected] Subject: Re: [volt-nuts] Spade lug Message-ID: <cajbunwq7ccpfw3_n-adz2lh24dsga8ezugnmfwkb7jawhjl...@mail.gmail.com> Content-Type: text/plain; charset="UTF-8" EDL also makes some you can order online. You can get just copper or gold plated over copper. https://www.edl-inc.com/Copper-Instrument-Lugs-25-Qty_p_51.html On Thu, Aug 13, 2020 at 5:58 AM Lou Amadio <[email protected]> wrote: > Hi Luciano > Try the Metrology thread on the EEVBLOG forum. There were some available > sometime ago. Post a request and you might get lucky. > Lou > > On Thu, Aug 13, 2020 at 6:02 PM <[email protected]> wrote: > > > > > Hi all you, > > > > I am looking some pure Copper spade lug for metrology measurements. > > > > Up now I have not found it on the web. > > > > Can you help me? > > > > Luciano > > > > Luciano P. S. Paramithiotti > > [email protected] > > www.timeok.it > > _______________________________________________ > > volt-nuts mailing list -- [email protected] > > To unsubscribe, go to > > http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com > > and follow the instructions there. > > > _______________________________________________ > volt-nuts mailing list -- [email protected] > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com > and follow the instructions there. > ------------------------------ Message: 4 Date: Thu, 13 Aug 2020 14:34:45 +0200 From: Andreas Bergmann <[email protected]> To: [email protected] Subject: Re: [volt-nuts] Spade lug Message-ID: <[email protected]> Content-Type: text/plain; charset=utf-8; format=flowed Hi Luciano, On 13.08.20 10:01, [email protected] wrote: > I am looking some pure Copper spade lug for metrology measurements. > > Up now I have not found it on the web. > > Can you help me? Perhaps Adrian can help you: https://www.ab-precision.de/products/cables-accessories/ Best regards, Mounty ------------------------------ Message: 5 Date: Thu, 13 Aug 2020 14:52:29 +0000 From: Tom Knox <[email protected]> To: "[email protected]" <[email protected]>, Discussion of precise voltage measurement <[email protected]> Subject: Re: [volt-nuts] Spade lug Message-ID: <cy4pr04mb04727cb14ac36edef51a9c4bdf...@cy4pr04mb0472.namprd04.prod.outlook. com> Content-Type: text/plain; charset="iso-8859-1" Hi Luciano; I have found a great source. They of copper as well as direct gold-plated copper. A small company JW Solutions. They manufacture spade specifically for metrology application. http://jswilley.com/ DC Metrology Resistance Standards Temperature Thermometry Pressure Repair Calibration Service<http://jswilley.com/> DC Metrology Primary & Secondary Standards, Temperature Probes & SPRTs, Pressure Standards, Repair & Calibration Service Referrals, Air & Fluid Baths & Automated Resistance Thermometry Bridges. jswilley.com The owner has worked for companies such as Guildline and Measurements international. Another source is the Audiophile world. But that is more hit or miss on actual quality. Cheers; Tom Knox SR Test and Measurement Engineer Ascent Concepts and Technology 4475 Whitney Place Boulder Colorado 80305 303-554-0307 [email protected] "Peace is not the absence of violence, but the presence of Justice" Both MLK and Albert Einstein ________________________________ From: volt-nuts <[email protected]> on behalf of [email protected] <[email protected]> Sent: Thursday, August 13, 2020 2:01 AM To: [email protected] <[email protected]> Subject: [volt-nuts] Spade lug Hi all you, I am looking some pure Copper spade lug for metrology measurements. Up now I have not found it on the web. Can you help me? Luciano Luciano P. S. Paramithiotti [email protected] www.timeok.it<http://www.timeok.it> _______________________________________________ volt-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com and follow the instructions there. ------------------------------ Subject: Digest Footer _______________________________________________ volt-nuts mailing list [email protected] http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com ------------------------------ End of volt-nuts Digest, Vol 129, Issue 6 ***************************************** ------------------------------ Message: 2 Date: Sat, 22 Aug 2020 14:58:28 +0200 From: Andreas Bergmann <[email protected]> To: [email protected] Subject: Re: [volt-nuts] Spade lug/Digistand 6406 manual Message-ID: <[email protected]> Content-Type: text/plain; charset=utf-8; format=flowed Hello Luciano, On 22.08.20 14:35, [email protected] wrote: > > Thanks to all those who have also answered me directly.(spade Lugs) > > At a flea market I bought two references, one for voltage and other for current, Digistand 6406 and 6426 respectively. I wrote to the manufacturer for the manuals and he sent me the one for 6426 but he told me that he did not find the one that interested me most , ie voltage reference 6406. I repaired both power supplies that had shorted electrolytic capacitors and for one of them I had to replace the custom power transformer. > > Now they both work but the voltage calibrator needs to be calibrated. Inside are a handful of trimmers but no indication of their function. Calibration is not possible without manual. Extreme ratio I want to ask you if any of you have this manual. > > Thank you, > > Luciano in 2016, quarks from the EEVBlog forum has offered exactly those two models. Perhaps he can help you with a manual. https://www.eevblog.com/forum/buysellwanted/fs-burster-calibrator-(location- germany)/ HTH Best regards, Mounty ------------------------------ Subject: Digest Footer _______________________________________________ volt-nuts mailing list [email protected] http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com ------------------------------ End of volt-nuts Digest, Vol 129, Issue 7 ***************************************** _______________________________________________ volt-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com and follow the instructions there. _______________________________________________ volt-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com and follow the instructions there.
