Explore the challenges and progress in developing an open-source multi-GHz sampling oscilloscope in this 31-minute conference talk by Ted Yapo. Delve into the complexities of recreating a 14.5 GHz sampling oscilloscope design from 1968 using modern components and techniques. Learn about sampling architecture, analog samplers, comparators, and calibration methods. Discover insights on power supply considerations, waveform analysis, bandwidth limitations, and time domain reflectometry. Gain understanding of eye diagrams and gated ring oscillators while following the speaker's journey through dead ends and promising leads in this ambitious project.