EEVblog #524 - Vignetting on a Cathode Ray Tube

Dave explains what causes CRT vignetting problems and how to fix it.
A follow up to the HP 35660A Dynamic Signal Analyser video here:
http://www.youtube.com/watch?v=VNsJ8qSk6CI
Whiteboard explanation of how a Cathode Ray Tube works, and how it can cause interference to sensitive measurements and the shielding required in a precision instrument like the HP DSA.
Forum: http://www.eevblog.com/forum/blog/eevblog-524-vignetting-on-a-cathode-ray-tube/

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/