文件名称：如何对示波器中的眼图进行观察
文件大小：550KB
文件格式：PDF
更新时间：2014-01-11 03:11:58
眼图
There is much industry confusion regarding how eye patterns look when measured by scopes. This confusion is related to the characteristics of serial data and the characteristics of scopes. This paper and an accompanying software tool called IRIS is presented to provide education on the interaction of serial data and scope characteristics in measurements. The paper looks at how each individual scope characteristic interacts with the serial data characteristic in both frequency domain and time domain, specifically attempting to provide insight into how one characteristic affects the eye pattern. Additionally, we try to build up rulesof- thumb that an engineer can safely employ to better utilize his measurement system. Serial data and scope characteristics interact collectively to provide often puzzling results. Therefore, we also provide a software tool that allows for simulation of the effects described with various serial data signals. This simulation shows excellent correlation with empirical measurements made on various scopes.