基于USB总线的数字多用表设计

Digital Multimeter Based on USB Bus

以USB总线为基础,运用自动量程切换、光电隔离、TRMS/DC、自行校准等技术,设计小型化、模块化、通用化数字多用表。该表具有较高精确度和稳定性,51/2位数字显示,能够完成对直流电压、直流电流、交流电压、交流电流、2/4线电阻等项目的测量,并可以作为自动测试系统的数字多用表模块使用。

Based on USB bus,the miniaturization, modularization, all-purpose digital multimeter with self-reacting, photoelectric isolate, TRMS/DC, self-correcting technology are designed. This muhimeter has higher accuracy and stability. The digital display of 5 1/2 location, can finish the measurement of projects such as DVC, AVC, DVI. AVI, resistance of Line 2/4 etc. , and can work for ATS ad digital multimeter module.