These measurements can be made with either a micro-ohmmeter or a nanovoltmeter with a current source. 这些测量工作可以采用微欧姆计或者纳伏表与电流源来进行。
Based on the low thermal EMF divider, a low DC voltage calibration system is developed for DC digital nanovoltmeter calibration. 基于研制出的低热电势分压箱,组建了直流低电压校准装置,可用于直流数字纳伏表的校准。
The results show that the measurement uncertainty at 1 μ V is 2.2%, so that it is satisfied for calibration for DC digital nanovoltmeter. 结果表明,该装置在1μV量值的测量不确定度为2.2%,适用于对直流数字纳伏表的校准。