Dave explains what causes CRT vignetting problems and how to fix it.
A follow up to the HP 35660A Dynmaic Signal Anayser video here:
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.
Another look at finding a $50 analog oscilloscope on ebay. Forum HERE Podcast: DownloadBe Sociable, ...