Cross comparison of HP/Key sight 3458As in 100 kHz DCV sampling mode using a Programmable Josephson Voltage Standard

In this work, we study the performance of the HP/Agilent/Keysight 3458A in the DCV mode. A Programmable Josephson Voltage standard (PJVS) system was used to generate step-wise approximated triangular waveforms which were sampled at 100 kHz with an aperture time of 1.4 μs. We present the static gain error and non-linearity results at the highest sampling rate (100 kHz) for five 3458As. We find a consistent difference in behaviour for new Keysight-branded units compared to older units.