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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.
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 in the "Trace Output Plot" settings in order to visualize it):
[[File:Screen Shot 2016-07-13 at 1.31.23 PM.png|1100px]]