Eye pattern construction and interpretation

1. What are the interpretations obtained from eye pattern?
2. What is eye pattern in communication?
3. What is the role of eye pattern or eye diagram in determining system performance measures?

What are the interpretations obtained from eye pattern?

From a mathematical perspective, an eye pattern is a visualization of the probability density function (PDF) of the signal, modulo the unit interval (UI). In other words, it shows the probability of the signal being at each possible voltage across the duration of the UI.

What is eye pattern in communication?

An eye diagram or eye pattern is simply a graphical display of a serial data signal with respect to time that shows a pattern that resembles an eye. See Figures 62.1 and 62.2.

What is the role of eye pattern or eye diagram in determining system performance measures?

Simply put, an eye diagram is a data dependent electrical measurement used to evaluate high speed data quality. An eye diagram is measured in the time domain. And as with most time domain electrical measurements, variation in the measurement will occur in every set of samples.