数字式低频频率特性仪的研制  

Development of Digital Low-frequency Characteristic Measuring Instrument

作　　者：胡俊锋[1] 王柏祥[1] 章专[1] 过静娴[1] 

机构地区：[1]浙江大学信息科学与工程学院,浙江杭州310027

出　　处：《计算机测量与控制》2005年第9期1003-1005,共3页Computer Measurement &Control

摘　　要：文章介绍了一种先进的数字式低频频率特性仪的体系结构和测量原理,该仪器采用AT89C52单片机控制,以精密波形发生器ICL8038为扫频信号源,并配以增益自动控制电路扩大测量范围,能在示波器上显示四端网络的幅频特性曲线。A kind of advanced digital low-frequency characteristic measuring instrument and the details about its construction and measurement principle are described in this text, It uses single chip microcomputer AT89C52 as its control unit and precision waveform generator ICL8038 as its signal source. The gain adjusting circuit expands the instrument＇s measurement range, And the frequency characteristic of two port network can be measured quickly and be displayed clearly on the screen of the oscillograph.

关 键 词：单片机 精密波形发生器 增益可调网络 数字电位计 

分 类 号：TP216[自动化与计算机技术—检测技术与自动化装置]