What is an Eye Diagram?

In high-speed digital communication systems, signal integrity is crucial. To ensure accurate data transmission, engineers often use a tool called the Eye Diagram to evaluate signal quality and integrity. The eye diagram visually displays the state of a signal after multiple transmissions, helping to quickly identify potential issues within the system. An eye diagram is generated by superimposing multiple cycles of a digital signal on an oscilloscope. This overlay allows engineers to visually observe issues such as signal jitter, noise, and intersymbol interference. The term “eye diagram” comes from its appearance, as the transitions between the rising and falling edges and logic levels resemble the shape of an eye. The Eye Diagram Generation Process 1.Signal Capture: A high-speed oscilloscope captures multiple cycles of the digital signal. 2.Signal Overlay: The waveform from different cycles is overlaid to form a unified display. 3.Timing and Amplitude Analysis: By ob