Another ebay score.
Dave tears down a HP4263A LCR Meter.
How an LCR Meter works: https://www.youtube.com/watch?v=fs2MfTW4o_Q
Forum: http://www.eevblog.com/forum/blog/eevblog-757-hp4263a-lcr-meter-teardown/

4263A Datasheet:
http://www.testequipmenthq.com/datasheets/Agilent-4263A-Datasheet.pdf
4263A User Manual:
http://literature.cdn.keysight.com/litweb/pdf/04263-90001.pdf?id=722686
4263B service manual: http://www.doe.carleton.ca/~nagui/labequip/lcr/4263B_Service%20Manual.pdf
X28C64 EEPROM: http://pdf.datasheetcatalog.com/datasheets/120/291528_DS.pdf
82C54 Programmable Interval Timer http://www.intersil.com/content/dam/Intersil/documents/82c5/82c54.pdf
Precision DiFET opamp
OPA627 http://www.ti.com/lit/ds/symlink/opa627.pdf
List of Keysight part numbers: http://literature.cdn.keysight.com/litweb/pdf/5989-5950EN.pdf


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