(一)前言随着科学技术的发展,根据各种需要组建相应的自动测试系统就显得异常重要了。而一个自动测试系统不管它的复杂程度情况,归根结底是由三部份组成的:可程控的测试仪器、标准接口母线和控制器。因此BY1951A可程控的数字多用表的研制成功,为自动测试系统提供了一台重要的部件。 BY1951A主要性能如下: 1.多功能: 可对直流电压、交流电压、电阻和频率进 (A) of the preface With the development of science and technology, according to various needs of the formation of the corresponding automatic test system is very important. An automatic test system, regardless of its complexity, is ultimately composed of three parts: a programmable test instrument, a standard interface bus, and a controller. Therefore, BY1951A programmable digital multimeter developed successfully for the automatic test system provides an important part. BY1951A main features are as follows: 1. Multi-function: DC voltage, AC voltage, resistance and frequency into