Measuring resistance standards in terms of the quantized Hall resistance with a dual Josephson voltage standard using SINIS Josephson arrays

To determine arbitrary resistance ratios with high precision, a measuring system based on a dual Josephson voltage standard has been set up. It is demonstrated that, by means of this system, 10-k(Omega) standard resistors can be linked to a quantized Hall resistance (i=2, 12.9 k(Omega)) with an expanded uncertainty (k=2) of less than 4 parts in 10^9.