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

Autor:	Hikari Takahashi, Takahiro Kanai, Akio Iwasa, Kenichi Katayama, Takahito Yonezawa, Shogo Kiryu, Nobu-Hisa Kaneko, Michitaka Maruyama, Chiharu Urano
Rok vydání:	2015
Předmět:	Josephson effect Engineering business.industry Josephson voltage standard Electrical engineering Linearity Dc voltage Voltmeter Electronic engineering Measurement uncertainty Electrical and Electronic Engineering business Instrumentation Voltage
Zdroj:	IEEE Transactions on Instrumentation and Measurement. 64:1613-1619
ISSN:	1557-9662 0018-9456
DOI:	10.1109/tim.2015.2418455
Popis:	We have evaluated the linearity of commercial digital voltmeters (DVMs) using a programmable Josephson voltage standard (PJVS) system. The PJVS system is composed of a 524 288-niobium nitride-based Josephson junction array that has the ability to generate arbitrary output voltages up to 17 V with a resolution of 12 bits. In our system, the junction array is operated in a 10-K compact cooler without a liquid-helium coolant. Up to now, we have succeeded in generating accurate dc voltage levels of up to approximately 13 V using this system. In this paper, we demonstrate our PJVS system as a tool for investigating the linearity characteristics of commercial DVMs, with an accuracy level of 0.1 $\mu \text{V}$ /V or better, and discuss the uncertainty sources in these measurements.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::49cc99d44a551aff0fa5ebae3b0e2f8e https://doi.org/10.1109/tim.2015.2418455 Zobrazit plný text záznamu