高速数字存储示波器产品化设计的关键技术  

Techniques in Product Design of High-Speed Digital Storage Oscilloscope

作　　者：叶芃[1] 陈世杰[1] 张沁川[1] 

机构地区：[1]电子科技大学自动化工程学院,成都610054

出　　处：《电子科技大学学报》2005年第2期248-250,284,共4页Journal of University of Electronic Science and Technology of China

摘　　要：论述了“100 MHz高速数字存储示波器”的关键技术,着重阐述了系统设计的概念和原理、基于低速器件的高速数据采集技术、基于随机取样技术的等效采样技术的实现。其中,随机等效采样的实现采用高分辨力测时扩展器,使等效采样率达到5 GSPS,时间测量分辨率达到200 ps,实现100 MHz(-3 dB)可重复信号的波形重现,并给出了实际应用中重建的波形图。The key techniques in the development of digital storage oscilloscope (DSO), a product type project taken by the authors, are discussed, of which the concept and the theory of the system design, the high-speed data acquisition technique based on the devices with lower operation speed, the equivalent sampling technique based on Random sampling are expatiated. The 200 ps time resolution and 5 GSPS equivalent sampling rate are gotten by using large-scale time expander, so the DSO can observe 100 MHz (-3 dB) seasonal signal. The results of experiment and application are presented in the end.

关 键 词：数字存储示波器 随机取样 时间分辨率 时间扩展器 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]