A teardown of the front end PCB in the HP 35660A Dynamic Signal Analyser.
Dave does some preliminary investigation to see what opamps and FET’s are unsed in the analog front end to see if they can be upgraded for better performance.
This is more for Dave’s record than interesting info.
Previous video: http://www.youtube.com/watch?v=Y0jkPLuFdnM
A viewer found an EMC issue with the Keysight U1272A multimeter Dave confirms both conducted ...