EEVblog #406 - Keithley 480 Picoammeter Teardown & Calibration

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Duration: 48:59
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Teardown and calibration checking of a Keithley 480 Picoammeter Dave got from ebay.
This was supposed to be a repair and troubleshooting as well, but Murphy had other ideas.

Keithley 480 User & Service Manual: http://www.ko4bb.com/Manuals/09)_Misc_Test_Equipment/Keithley/Keithley_Model_480_Picoammeter_Complete.pdf

Forum Topic: http://www.eevblog.com/forum/blog/eevblog-406-keithley-480-picoammeter-teardown-calibration/

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Tags:
keithley
picoammeter
keithley 480
current source
keithley 225
keithley 261
calibration
low current
measurement
shielding
schematic
repair
ebay
calibration check
calibration adjustment
troubleshooting
electronics
electronics troubleshooting
electronics testing
performance testing