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=== Sum of Difference ===
This module, also known as Sum of Absolute Difference (SAD), is used to re-synchronize traces as in the case of signals with time jitter.
See [[Sum of Absolute Difference (SAD) Pre-Processing]] The easiest way to detect the presence of jitter is by zooming in the plot to check if they are not aligned (you may need to select about 8 or more traces to be ploted simulteneously plotted simultaneously in the "Trace Output Plot" settings in order to visualize it):
[[File:Screen Shot 2016-07-13 at 1.31.23 PM.png|1100px]]
