
Chapter 7
Signal processing
The signal processing available in digital storage oscilloscopes
takes one of two basic forms; pre-processing and post processing.
Pre-processing takes place at acquisition time while post
processing is performed upon the stored data in the display
memory. Another distinction is between processing which is
applied on a per channel basis, and processing that inherently
involves two channels. Examples of processes applied on a per
channel (per trace) basis are invert, average, envelope (max/min),
smooth, interpolate, rms, integrate, differentiate, square root, log,
absolute ...