The CAN 2.0 eye-diagram test randomly captures and overlays every differential bit of every CAN frame based on a unique clock recovery algorithm that emulates worst-case CAN receiver hard-synchronization, re-synchronization, and sampling. Figure 4 shows a CAN eye-diagram mask test based on a sy...
数字信号EyeDiagram测试分析技术 ^_^ --- --- 眼图的定义 ^_^ --- --- 眼图产生图示 ^_^ --- --- 眼图形成过程示例 Data Clock Data Clock ^_^ --- --- 问题:眼图分析与误码率分析有什么不同? 4相对误码率的测量,眼图测量即迅速又容易; ...
This article reports that the eye diagram, one of the best figures of merit for evaluating robustness in a digital data link, shows a single bit window (bit N), preceded by a random-value bit (N-1) and followed by a random-value bit (N+1). Communications-systems engineers usually ...
For the test instrument, the clock signal of the signal is first recovered from the signal to be tested, and then the eye diagram is superimposed according to the clock reference, and finally displayed. Figure 1: Formation of the Eye Diagram 2. Information contained in the Eye Diagram For...
eye diagram;eye pattern定义:示波器屏幕上所显示的数字通信符号,由许多波形部分重叠形成,其形状类似“眼”的图形。“眼”大表示系统传输特性好;“眼”小表示系统中存在符号间干扰。一.概述“在实际数字互连系统中,完全消除码间串扰是十分困难的,而码间串扰对误码率的影响目前尚无法找到数学上便于处理的统计规律,还...
information from an eye diagram can be sliced to gain more insight. It also discusses some basic ways that transmitters, channels, and receivers are tested. It is designed to give an engineer new to this field a basic grasp of the concepts commonly used. Eye Measurements Basics Eye diagrams ...
all you have to do to set up the eye is press “auto setup”. You will see in just a few seconds that the eye diagram has begun to form. Over time, you will be able to see if there is any jitter or anomalies in your signal. Generally, you will want to let the test run for...
A valid eye diagram has two distinct eye crossing points and two distinct eye levels. The deterministic jitter, horizontal eye opening, quality factor, random jitter, and vertical eye opening measurements utilize a dual-Dirac algorithm. Jitter is the deviation of a signal’s timing event from ...
Hysteresisprovides an amount of immunity to high-frequency noise in your digital system. Skewis when the clock signal arrives at different components at different times. Aneye diagramis a timing analysis tool that provides you with a good visual of timing and level errors. ...
ed = comm.EyeDiagram(Name,Value) Description ed= comm.EyeDiagramcreates an eye diagram System object with default property values. ed= comm.EyeDiagram(Name,Value)sets properties using one or more name-value pair argument. Enclose each property name in single quotes. Unspecified properties have de...