The drifts and deviations of National DC (artifact) Resistance Standards by comparison with Quantum HallResistance (QHR) since 1990 is reported.
报告了自1990年以来通过与量子化霍尔电阻比对考核的国家直流电阻(实物)基准的长期漂移率及偏差。
2
With the help of other measures put forward by the authors, a Quantum HallResistance Standard with uncertainty of several parts in 10~(-10) has been established.
结合其他措施,完成了综合不确定度为10-10量级的量子化霍尔电阻标准装置。
3
The theory of hall signal checking and how to change phase using DSP technology are discussed in detail and analyzed the method of using a single resistance measure phase current.