https://stream.echo6.co/videos/watch/d93ef65a-116b-40f9-886d-837f46982a06 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/ EEVblog Main Web Site: http://www.eevblog.com EEVblog Amazon Store: http://astore.amazon.com/eevblogstore-20 Donations: http://www.eevblog.com/donations/ Projects: http://www.eevblog.com/projects/ Electronics Info Wiki: http://www.eevblog.com/wiki/ Wed, 10 Jun 2026 02:00:12 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://stream.echo6.co https://stream.echo6.co/client/assets/images/icons/icon-512x512.png https://stream.echo6.co/videos/watch/d93ef65a-116b-40f9-886d-837f46982a06 All rights reserved, unless otherwise specified in the terms specified at https://stream.echo6.co/about and potential licenses granted by each content's rightholder.