25G Optical Module Eye Diagram, do you really understand? What test eye diagram equipment is needed?
An eye diagram is a tool used to observe the quality and performance of a high-speed digital signal, which can reflect a lot of information about the signal, such as noise, jitter, inter-code crosstalk, extinction ratio, and signal-to-noise ratio. Eye diagram is a series of digital signals accumulated on the oscilloscope and displayed graphics, it is similar to the shape of an eye, hence the name. The size and clarity of the eye diagram can reflect the quality of the signal. Generally speaking, the larger and clearer the eye diagram is, the better the signal is; the smaller and blurrier the eye diagram is, the worse the signal is.