Thermal Transfer Standard Calibrations Using a Pulse-Driven AC Josephson Voltage Standard

We calibrate a commercial thermal transfer standard Fluke 792A with a pulse-driven ac Josephson voltage standard containing 6400 junctions. The ac-dc difference of the thermal transfer standard is presented for frequencies ranging from 2 kHz to 100 kHz with 10 mV applied to the 22 mV range and 100 mV applied to the 220 mV range. Calibration uncertainties are also estimated in detail.