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
Forum Topic HERE
Teardown of the new $389 12bit Rigol DHO800 oscilloscope! Forum: https://www.eevblog.com/forum/blog/eevblog-1563-new-$389-12bit-rigol-dho800-scope-teardown/ EXCLUSIVE Unboxing and first ...