https://stream.echo6.co/videos/watch/0c14e72d-0118-45d7-8ac9-d6e8fcb619df Dave shows how to upgrade an Agilent/Keysight 6643A/6642A/6641A system dc power supply to have front panel binding posts. Sense lines are added to improve the high current accuracy. Operation Manual: http://literature.cdn.keysight.com/litweb/pdf/5964-8267.pdf Service Manual + Schematic: http://literature.cdn.keysight.com/litweb/pdf/5959-3376.pdf Auction Score video: https://www.youtube.com/watch?v=peRJtgfn-Lw Forum: http://www.eevblog.com/forum/blog/eevblog-667-agilent-6643a-power-supply-binding-post-hack/ EEVblog Main Web Site: http://www.eevblog.com The 2nd EEVblog Channel: http://www.youtube.com/EEVblog2 EEVblog Amazon Store (Dave gets a cut): 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/ Sun, 17 May 2026 05:26:41 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/0c14e72d-0118-45d7-8ac9-d6e8fcb619df 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.