Teledyne LeCroy PeRT3 Phoenix System - Manual (Page 36)

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Teledyne LeCroy Introduction of Stress into Waveform
The eye diagram of a typical "clean" bit stream generated by the analog front end is
shown below (for 5 Gb/sec):
Figure 4.2: Eye Diagram
Introduction of Stress into Waveform
The analog front end introduces stress (or distortion) into the waveform as desired by the
user. The stressed waveform can be used to explore the performance envelope of the
device under test, to determine the types and amounts of stress the device or design can
tolerate before desired bit error rates are exceeded.
Examples of the eye diagrams that result from introduction of certain types of stress are
shown below.
De-Emphasis and Pre-shoot
Figure 4.3: Eye Diagram with Stress Introduced