EEVblog #615 - Prema 6047 Multimeter Followup

Dave checks the Dallas DS1220Y chip in the Prema 6047 7.5 digit multimeter to see if the battery is dead, and if the calibration constants have been lost.
http://datasheets.maximintegrated.com/en/ds/DS1220Y.pdf
ROM is here:
http://www.eevblog.com/files/Prema6047-ROM-8-5-91.BIN
Previous video: https://www.youtube.com/watch?v=G-6BBF3HyRU
Forum: http://www.eevblog.com/forum/blog/eevblog-615-prema-6047-multimeter-followup
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