EEVBlog #426 - HP 3457A Multimeter Teardown

Teardown Tuesday.
Inside the HP 3457A 6.5/7.5 digit bench multimeter.
Service Manual:
http://cp.literature.agilent.com/litweb/pdf/03457-90011.pdf
http://cp.literature.agilent.com/litweb/pdf/03457-90012sg.pdf
http://f6fzk.free.fr/DOCUMENTATION/DOC%20HP/CD1/3457a_svc.pdf
User Manual: http://cp.literature.agilent.com/litweb/pdf/03457-90003.pdf
LM399 Reference: http://cds.linear.com/docs/en/datasheet/LM199399fb.pdf

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