虚拟仪器技术研究——网络频率特性测试仪的开发

The design and realization of Frequency Characteristic Test Equipment based on VI technology

本文详细介绍了一种基于虚拟仪器技术的网络频率特性测试仪的原理、组成及其功能,包括基于直接数字频率合成技术(DDS)和锁相环技术的扫频信号源部分、基于AD6640的高速数据采集单元以及基于PCI局部总线的通用硬件模块,该仪器主要应用于对滤波器、宽带放大器、鉴频器以及其它有源或无源线性网络频率特性的测试和分析。

The article introduces the theory?constitutions and functions of a network frequency characteristic test equipment based on VI technology carefully,including variable frequency signal source﹑The equipment mainly applys to the measurement and analysis to filter﹑broad band amplifier﹑frequency detector and the other active or passive linear network frequency characteristic .