Exchange of the 10 V Josephson array chip in the SMU voltage standard

Interlaboratory comparison of the SMU 10 V Josephson array voltage standard (JAVS) has been carried out with the CMI JAVS. The comparison method was indirect using Zener diode reference as the traveling standard. This paper presents besides the results of the comparison that the parameters of the SMU primary standard have been preserved after the exchange of the Josephson array chip in the system. The results show agreement between the SMU and the CMI calibrations of the Fluke 732 B reference standard 280 nV.