HP / Agilent 3458A SNAPHAT ZeroPower Battery Replacement HD

Support me through Patreon or by using my Amazon Store: Patreon: https://www.patreon.com/mjlorton Amazon Store: http://astore.amazon.com/m0711-20 Or anything on Amazon: http://www.amazon.com/?_encoding=UTF8&camp=212353&creative=380557&linkCode=sb1&tag=m0711-20 ------------------------------ Click "Show more" ------------------------------------------- HP / Agilent 3458A SNAPHAT ZeroPower / TimeKeeper Battery Replacement on the A5 Outguard Controller. HP 3458A 8.5-digit metrology-grade DMM restoration by Illya Tsemenko: https://xdevs.com/fix/hp3458a/#a5pcba Some history and background on the 3458A: http://hackaday.com/2015/12/03/nuts-about-volts/ http://www.hpl.hp.com/hpjournal/pdfs/IssuePDFs/1989-04.pdf ST Micro application note on their ZEROPOWER® and TIMEKEEPER® NVRAM devices: http://www.st.com/web/en/resource/technical/document/application_note/CD00004060.pdf http://www.st.com/web/en/resource/technical/document/application_note/CD00004080.pdf Application note on date codes: http://application-notes.digchip.com/005/5-9794.pdf Spartan-II 2.5V FPGA Family Data Sheet: https://www.digchip.com/datasheets/download_datasheet.php?id=1058590&part-number=XC2S30 My new Website is now live, see it here: http://mjlorton.com/ Follow this link for a Free Arduino Introductory course: https://programmingelectronics.com/mj_lorton ------------------------------------------------------------------------------------------------------ My website and forum:- http://www.mjlorton.com Donations and contributions:- http://www.mjlorton.com My techie channel MJLorton - Solar Power and Electronic Measurement Equipment - http://www.youtube.com/MJLorton My Techie Amazon Store: http://astore.amazon.com/m0711-20 My other channel VBlogMag - For almost any topic under the sun! - http://www.youtube.com/VBlogMag My VBlogMag Amazon Store: http://astore.amazon.com/vblogmag-20 ------------------------------------------------------------------------------------------------------ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ Bitcoin (BTC) Donations: 1K7PeF55e7ssE7W3WVCoa7c4j2PHzy6ASv $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ ********************************************************************************** Music clip from Youtube Music Library - Phase Three by Huma-Huma **********************************************************************************