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Abstract

A jitter unit converts a stable input test signal into a jittering output test signal used to test the jitter tolerance of electronic equipment. This jitter device allows any test or sample signal (analog or digital, video or audio) to be used for testing such equipment. Jitter is a type of timing error between the expected or ideal timing of a signal and the actual timing of a signal in which the characteristics of the timing error change with time. The characteristics of jitter include the level of error, the frequency of change in the error and whether the change is periodic or random. The jitter unit uses a variable delay unit to delay the signal and uses a controller to regulate the delay of the delay unit in order to transform the stable signal into a jittering signal.

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First Claim