A similar technique, with analog rather than digital samples, was used before the digital era in " analog sampling oscilloscopes ."
12.
A sequential equivalent-time sampling oscilloscope, sometimes simply called a sampling scope, measures the input signal only once per trigger.
13.
The current state-of-the-art oscilloscopes with bandwidths of typically 20 MHz were not able to do this and the 300 MHz effective bandwidth of their analog sampling oscilloscope represented a considerable advance.
14.
There is a variation of the DSO called the " digital sampling oscilloscope " that can exceed this limit for certain types of signal, such as high-speed communications signals, where the waveform consists of repeating pulses.
