HP / Agilent 3458A SNAPHAT ZeroPower Battery Replacement

HP / Agilent 3458A SNAPHAT ZeroPower Battery Replacement
April 13, 2016 Posted in: Video
Replacing the battery in the 3458A HP / Agilent multimeter.
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-a…
http://www.hpl.hp.com/hpjournal/pdfs/…

ST Micro application note on their ZEROPOWER® and TIMEKEEPER® NVRAM devices:
http://www.st.com/web/en/resource/tec…
http://www.st.com/web/en/resource/tec…

Application note on date codes:
http://application-notes.digchip.com/…

Spartan-II 2.5V FPGA Family Data Sheet:
https://www.digchip.com/datasheets/do…