Title :
Evaluation of linearity in digital voltmeters using PJVS
Author :
Maruyama, Mihoko ; Katayama, Kengo ; Yonezawa, Teru ; Kanai, Teruto ; Yoshida, Hiroyuki ; Iwasa, Akio ; Urano, Chiharu ; Kaneko, Nobu-hisa
Author_Institution :
Nat. Metrol. Inst. of Japan (NMIJ), AIST, Tsukuba, Japan
Abstract :
We are evaluating the linearity characteristics of digital voltmeters (DVMs) using a programmable Josephson voltage standard (PJVS) system. The PJVS system is composed of a 524 288 junction array and a 10 K compact cooler, which enables to generate an arbitrary output voltage of more than 10 V. The voltage signal output with the PJVS system was applied to DVMs, and the linearity characteristics were investigated based on the reading values of the DVMs. As a result, we found that the linearity characteristics can be evaluated with the expanded uncertainty of 0.1 μV/V or better for the 10 V or smaller ranges.
Keywords :
Josephson effect; digital voltmeters; measurement standards; voltage measurement; DVM; PJVS system; arbitrary output voltage generation; compact cooler; digital voltmeter; junction array; programmable Josephson voltage standard system; temperature 10 K; voltage 10 V; voltage signal output; Accuracy; Arrays; Linearity; Standards; Switches; Uncertainty; Voltage measurement; DC voltage; DVM; Josephson junction array; PJVS; linearity; mechanical cooler; precision measurements;
Conference_Titel :
Precision Electromagnetic Measurements (CPEM 2014), 2014 Conference on
Conference_Location :
Rio de Janeiro
Print_ISBN :
978-1-4799-5205-2
DOI :
10.1109/CPEM.2014.6898359
