Jitter is defined as the difference, or delta, between the actual location of an edge and its ideal location. As can be seen in the timing diagram at the top of the slide, the actual edge location is slightly different than its ideal location, the difference between the actual location and the ideal location is jitter. There are two types of jitter, random and deterministic. Random jitter is statistically Gaussian in nature but is unbounded. For instance, it could be caused by moving the device in question from an interference-free environment to a noisy environment. Deterministic jitter is non-Gaussian in nature but has a bounded amplitude. It can be correlated to other systems events such as spurious noise or crosstalk.