Direct Comparison Of Dc Josephson Voltage Standard And Programmable Josephson Voltage Standard Of Tubitak Ume
2018 CONFERENCE ON PRECISION ELECTROMAGNETIC MEASUREMENTS (CPEM 2018)(2018)
Abstract
10 V programmable Josephson voltage standard (PJVS) has been setup at TUBITAK Ulusal Metroloji Enstitusu (UME), national metrology institute of Turkey. The PJVS has compared to 10 V DC Josephson Array Voltage Standard (JVS) of TUBITAK UME which is regularly used for the calibration of DC Voltage Standards and DC voltage meters since 1997. A direct comparison between two Josephson voltage standards was carried out at the level of 10 V in order to verify the accuracy of the PJVS. The difference between the two systems (JVS - PJVS) was +0.96 nV with an uncertainty of 2.4 parts in 10(-10) (k = 1).
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Key words
DC voltage, Josephson voltage standard, Programmable Josephson voltage standard, comparison of measurement standards, uncertainty
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