利用34970A在LabVIEW中实现多路电阻自动测量

Using 34970A to achieve automatic test of the multiplex resistance in the circumstance of LabVIEW

在实际测量工作中经常会遇到反复对多路信号进行测量的问题,例如对多路电阻测量,采用人工测量方法,所用的配套设备较多,操作烦琐且易引入人工读数等因素造成的误差,针对这些问题,本文在介绍Agilent 34970A(数据采集/开关单元)结构、性能的基础上,采用34970A(数据采集/开关单元)经GPIB总线与PC主机相连,组成多路电阻自动测量系统,它不仅简化了测量过程,测量精度也得到了提高,并详细讨论了在LabVIEW开发环境中实现多路电阻自动测量程序设计思想。

In daily works, when testing multiplex signals, we usually have to test multiplex signals repeatedly. Take multiplex resistance for example, manual testing can be very complicated and can easily make error because a lot of equipments used in the work. In this paper we form a multiplex resistance system which connects the 34970A （data acquisition/switch unit） with PC by GBIP bus. The system can extremely simplify the process of testing and improve the testing precision as well. The paper mainly discusses the idea of automatic test of the multiplex resistance in the circumstance of LabVIEW.