Joe, I haven’t tried to calibrate my 7081, either. I should send my 3458A to Keysight and then compare the before and after readings of the 7081. The slow sampling rate of the 7081 at 8.5 digits is a bit of pain but it’s sure a nice meter otherwise. I have just one set of leads for it, to banana plugs. Haven’t got around to getting a connector to build up Kelvin clip leads for 4-wire resistance measurements as I use the 3458A for that on the rare occasion I need that capability. I’ve got a Datron/Wavetek 4910 that needs the batteries replaced and I haven’t got around to that yet, either. I’m going to be “thinning out the herd” this year as we prepare to downsize, and I’ve got entirely too much stuff anyway!
Steve > On Jun 30, 2019, at 9:31 PM, J. L. Trantham <[email protected]> wrote: > > Steve, > > I've never calibrated a 7081 but I did use a Solartron Calibrated 7081 as a > 'transfer standard' to calibrate a 3458A before I sent the 3458A to Agilent > (at the time) for calibration. The 3458A passed every measure 'in spec' when > received by Agilent except for one of the ranges on AC voltage, at 100KHz, > IIRC. I think I made a post about it several years ago. > > I wonder how hard it would be to calibrate a 7081 using a 3458A (or similar) > as the 'transfer standard'. > > However, it will still be slow. > > Joe > > -----Original Message----- > From: volt-nuts [mailto:[email protected]] On Behalf Of Steve > - Home > Sent: Sunday, June 30, 2019 7:44 PM > To: Discussion of precise voltage measurement > Subject: Re: [volt-nuts] What are the best of the low(ish) cost 8.5 digit > multimeters? > > Unfortunately Ametek at Farnborough (where the 7081 was designed and > manufactured by Solartron) are no longer calibrating the 7081. I was by there > about the time your meters were being calibrated, Joe. I’m not sure they’re > even in business now as the last time I was by the business park in February > this year their sign was gone. > > Steve > WB0DBS > > > >> On Jun 30, 2019, at 8:20 PM, J. L. Trantham <[email protected]> wrote: >> >> David, >> >> Have you considered the Solartron/Ametek 7081? >> >> If I'm not mistaken, you posted some images of their EPROM's several years >> ago. >> >> It's slow sampling at 8.5 digit resolution but seems user friendly and, at >> least several years ago, was able to be calibrated by Ametek in England. I >> sent two over there for calibration. >> >> Good luck. >> >> Joe >> >> -----Original Message----- >> From: volt-nuts [mailto:[email protected]] On Behalf Of Dr. >> David Kirkby >> Sent: Sunday, June 30, 2019 6:18 PM >> To: Discussion of precise voltage measurement >> Subject: [volt-nuts] What are the best of the low(ish) cost 8.5 digit >> multimeters? >> >> I would like to get an 8.5 digit multimeter, but an Agilent, Fluke or >> Keithley is outside my budget. There are quite a few other 8.5 digit >> multimeters around, but I was wondering what is the best of the cheaper >> ones. I really don’t want to spend more than £1000 (GBP) and preferably >> less. >> >> There’s a Datron/Wavetek 1271 on eBay at a price of £2450 or offer, but >> recent ones sold in the UK have gone for £800. I have emailed the seller of >> that, as I have bought from him before. He can sometimes be quite flexible >> on prices, especially if one deals outside eBay. >> >> I want to avoid buying something that is impossible to get calibrated, but >> I can’t afford to buy a 3458A or similar. >> >> Dave >> -- >> Dr. David Kirkby, >> _______________________________________________ >> 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. > > > _______________________________________________ > 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. _______________________________________________ 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.
