Home Creators Posts Import Register Favorites Logout
haven't archived this post yet. have a subscription? use the importer!

Files

Previews only

Solartron 7081 - Mods & More for 8.5 Digit Voltmeter

The first 500 people to use this link will get a 2 month free trial of Skillshare Premium Membership: https://skl.sh/marcoreps14 Alarm Clock & Bench DMM 🙄 http://bit.ly/2vGPV4y DMMCheck Plus Reference https://www.welectron.com/DMMCheck-Plus-Multimeter-Kalibrier-Referenz TS100 with USB-PD aka Otter Iron: https://github.com/Jan--Henrik/Otter-Iron/ Behind the scenes stuff sometimes: https://www.patreon.com/marcoreps Datron Milling Bits https://datronshop.de/ (used in this vid: 6mm 4in1 0068806A 20k RPM 700mm/min feed) Resistor Encyclopedia by zlymex https://www.eevblog.com/forum/metrology/teardown-standard-resistors/ 'KX' LTZ1000 Reference https://xdevs.com/article/kx-ref/ My LTZ1000 video https://www.youtube.com/watch?v=xFMF4vw94rM Solartron 7081 Modding https://doc.xdevs.com/docs/SOLARTRON/7081/Mickle/ In this video we are taking a closer look at a special precision voltmeter that was so far ahead of its time that it is still a powerful tool today. I am taking a few measurements of an LTZ1000A voltage reference to turn them into statistics. Then I am taking apart the Solartron Schlumberger 7081 bench top voltmeter to find opportunities for improvement. I am CNC machining a new front panel segment to fit Pomona 3770 low thermal EMF binding posts. Finally I am installing an ultra-precision LTZ1000A voltage reference, but the new components have to settle down before we can see any results.

Comments

Rick B

Just picked up a 7081 on ebay for $475 USD. It arrives in a week. Will need work because it doesn't turn on but keeping fingers cross all the parts are there. Seemed like a lot better risk than paying $4000 for a 3458A and finding out it needs a $1200+ board. I will go back through your Solartron videos and see if I can learn anything that will help me when it arrives. Thanks for the videos. Keep the volts flowing! Rick PS. I picked up a Keithley 181 from watching your vids. Love my Keithley

marcoreps

Haha, I think I've seen that eBay auction mentioned in at least 2 chats! Congrats, great price even if some parts are missing. Maybe join the discord server and send some pics when you get it, I'd love to see it!

Rick B

Cool, What chat area?