Fixing an HP / Agilent 54845A infinium Oscilloscope

Last spring (2014) I came across what seemed to be an amazing deal at the MIT Swapfest. It was a HP 54845A digital oscilloscope, which, although over 15 years old, was still a pretty impressive beast being four channels, 1.5GHz, 8Gs/s! The only problem was it didn’t work. In fast the seller was letting it […]