Evaluation of Linearity Characteristics in Digital Voltmeters Using a PJVS System With a 10-K Cooler


We have a tendency to have evaluated the linearity of commercial digital voltmeters (DVMs) employing a programmable Josephson voltage commonplace (PJVS) system. The PJVS system consists of a 524 twenty eight8-niobium nitride-based mostly Josephson junction array that has the power to get arbitrary output voltages up to seventeen V with a resolution of twelve bits. In our system, the junction array is operated during a ten-K compact cooler while not a liquid-helium coolant. Up to currently, we tend to have succeeded in generating accurate dc voltage levels of up to approximately 13 V using this method. During this paper, we have a tendency to demonstrate our PJVS system as a tool for investigating the linearity characteristics of commercial DVMs, with an accuracy level of zero.1 /V or higher, and discuss the uncertainty sources in these measurements.

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