Fundamental comparison measurement between sinusoidal and stepwise-approximated sine wave generated by programmable Josephson voltage standard at NIM

Author

Huang Lu ; Wang Zengmin ; Yang Yan ; Gao Yuan ; Lu Zuliang

Author_Institution

Nat. Inst. of Metrol., Beijing, China

fYear

2014

fDate

24-29 Aug. 2014

Firstpage

524

Lastpage

525

Abstract

This paper described one differential measurement method by using a lock-in amplifier as null detector, which can directly compare one high-purity sinusoidal [HPS] produced by a commercial precision calibrator with one stepwise-approximated sine wave [SASW] generated by programmable Josephson voltage standard [PJVS] in fundamental root-mean-square [FRMS] values at NIM. The preliminary results show that the FRMS values of the HPV between the calibrated ones in term of the PJVS and the measured ones from a commercial automated ac measurement reference instrument agree within less than 1.5 μV/V at the frequency below 200 Hz.

Keywords

Josephson effect; amplifiers; calibration; electric current measurement; measurement standards; sensors; voltage measurement; FRMS value; HPS; NIM; PJVS; SASW; automated AC measurement; fundamental root-mean-square value; high-purity sinusoidal; lock-in amplifier; null detector; one differential measurement method; precision calibrator; programmable Josephson voltage standard; reference instrument; sinusoidal sine wave measurement; stepwise-approximated sine wave measurement; Amplifiers; Detectors; Frequency measurement; Harmonic analysis; Josephson junctions; Standards; Voltage measurement; Fundamental root-mean-square value; Lock-in amplifier; Programmable Josephson voltage standard; Quantization error; Stepwise-approximated sine wave;

fLanguage

English

Publisher

ieee

Conference_Titel

Precision Electromagnetic Measurements (CPEM 2014), 2014 Conference on

Conference_Location

Rio de Janeiro

ISSN

0589-1485

Print_ISBN

978-1-4799-5205-2

Type

conf

DOI

10.1109/CPEM.2014.6898490

Filename

6898490