新的体系结构创造了新一代的逻辑分析器——TLA700型系列产品的异步数字附加取样结构是硬件定时检测技术的新典范

传统的逻辑分析仪结构已不能满足市场的需求。当处理器的速度超过100MHz并出现了先进的逻辑电路时,现有的100MS/s(每秒兆样值)逻辑分析器已跟不上时代的前进步伐。不仅如此,快速移动的数字信号还会感受串扰和反射等模拟效应。100MHz的常规逻辑分析器只能提供10ns的定时分辨率,因此无法测出高速毛刺和微小的定时问题。 逻辑分析器的制造厂商一直设法改进现有的产品。尽管如此,逻辑分析器仍不能满足市场的需要。他们曾试图以减少通道的方法而获得较高的捕获速率和较大的存储量。

Research on Asynchronous Transfer of DTV Video Signal

Digital TV (DTV) video signal transmission over ATM network is emphasized on.Some important problems are introduced about TV video signals asynchronous transfer to network application client, and the idea of video transfer design is discussed. The contents mainly include the DTV video streams asynchronous transfer topology, compressed coding adopted ATM network, asynchronous transfer efficiency and some problems of DTV video transmission in ATM network .