Eye Diagram

An eye diagram is a visual tool used to analyze the quality of data signals in digital communication systems. It displays multiple overlapping snapshots of a signal’s voltage over time, creating a pattern that looks like an eye. This pattern reveals how well the signal is transmitting data—how clearly bits are distinguished, how much noise affects the signal, and whether timing issues exist. A clean, open eye indicates reliable data transmission, while a distorted or closed eye suggests problems like interference or timing errors. It helps engineers optimize and diagnose communication systems effectively.