Resolution rises to become banner spec for oscilloscopes

摘要

Since its invention in the 1980s, the digital oscilloscope represented a more modern approach to the visualization of waveforms compared with the analog instruments it replaced. Analog oscilloscopes displayed waveforms directly, but digital oscilloscopes use high-speed analog-to-digital converters (ADCs) to sample the analog input signal and convert the signal amplitude at each sampled point into digital values. The digital amplitude values are subsequently reconstructed to represent the input signal for display.