文中说明了如何将cdr文件转换为png图片，需借助Macromedia Fireworks 软件。-The article explains how to convert cdr files png images, requires the use of Macromedia Fireworks software.

介绍了RADIUS协议在GPRS网络Gi接口监测的基本概念和功能，说明RADIUS协议监测模块消息结构，并以此为基础上研究RADIUS协议的解码、重点探讨CDR合成及统计技术、并以RADIUS认证、计费过程为例，详细阐述合成及原理与方法，通过数据采集测试验证了相关理论的有效可行性。-Paper mainly introduced the basic conceptions and functions of RADIUS protocol at Gi interface monitoring in

一种全数字时钟数据恢复电路的设计与实现，提出一种改进型超前滞后锁相环法的全数字时钟恢复算法，与同类电路比较，具有数据码率捕获范围宽、捕获时间短的优点。-Clock Date Recovery(CDR)circuit is a important part of data transmission equipment．For the burst data transmission，the traditional phase—lock loop can hardly achieve the re

12．5 Gb／s半速率时钟数据恢复电路(CDR)的 设计及6．25Gb／s SerDes接收芯片的系统集成，设计工艺均为TSMC 0．189in CMOS工艺。-aspects：Design of Half-rate 1 2．5 Gb／s Clock Data Recovery (CDR)and Integration of 6．25Gb／s SerDes receiver．Both are realized in TSMC 0．1 89m CMOS process．