基于LabVIEW的4284A-LCR测量系统开发

Development of 4284A-LCR Measurement System Based on LabVIEW

利用LabVIEW开发安捷伦4284A-LCR测量仪的多功能测量系统。采用Keithley-GPIB488转接线实现计算机USB端口与4284A-LCR测量仪GPIB端口的物理连接;LabVIEW中的VISA通讯函数配合4284A-LCR的指令集开发测量系统的各功能模块,实现计算机程序控制4284A-LCR测量仪。在集成4284A-LCR测量仪前面板测量功能的基础上,测量系统增加了快速设定频率范围、介电频谱测量、实时图形化显示数据以及测量数据存储等功能。结合加热装置和3146A万用表测温功能,该系统还能够实现介电温谱的测量。

A multifunctional measurement program for the Agilent 4284A-LCR instrument was developed based on LabVIEW.The computer and the 4284A-LCR instrument was connected by a Keithley-GPIB488 adapter cable.The VISA communication functions of LabVIEW and the program commands of 4284A were used to develop the functional modules of the measurment program.In this way,the 4284A-LCR instrument is controlled by a computer program.All keys functions on the 4284A-LCR front panel were ported into this program.Further,functions such as frequency range fast setting,dielectric spectrum measurement,real-time graphical display data and measurement data storage were integrated in this program.Combining a heating device with 3146A multimeter,the system was also capable of measuring dielectric temperature spectra.