目前检定直流电桥(下称电桥)、直流电阻箱(下称电阻箱)大都采用电桥法。此法准确、可靠,但操作麻烦、费时,并且没有希望实现自动检定或自动检定。我们根据数字多用表欧姆功能(下称DMM)的特点,用它代替检定装置中的测量电桥(及指零仪和其它附件),则电桥、电阻箱的检定极易实现自动化或半自动化,其检定速度大大提高。 Current test DC bridge (hereinafter referred to as the bridge), DC resistance box (hereinafter referred to as resistance box) mostly used bridge method. This method is accurate and reliable, but the operation is cumbersome, time-consuming, and there is no hope to achieve automatic verification or automatic verification. Based on the characteristics of DMM’s ohmic function (DMM), we use it instead of the measuring bridge (and the zero meter and other accessories) in the verification device, so the verification of the bridge and resistance box can be easily automated or semi-automated , Its test speed greatly improved.