Application of a Josephson quantum voltage source to the measurement of microsecond timescale settling time on the Agilent 3458A 8 digit voltmeter

The voltage waveform measurement characteristics due to finite settling time on the microsecond timescale are investigated for the Agilent 3458A 8 digit voltmeter in DCV mode. A quantum-accurate voltage synthesizer based on the Josephson effect produces a change in test voltage in less than 1 μs and the voltage reported by the voltmeter is measured as a function of two timing parameters, aperture delay and duration. A model is presented and the level of agreement is discussed in the context of optimizing the configuration of the instrument for both high measurement throughput and accuracy.

[1]  Luis Palafox,et al.  Achieving Sub-100-ns Switching of Programmable Josephson Arrays , 2007, IEEE Transactions on Instrumentation and Measurement.

[2]  Michitaka Maruyama,et al.  Large constant voltage generated with a single array including 65 536 Nb/TiN/Nb Josephson junctions , 2010 .

[3]  Steve Winder,et al.  Operational Amplifiers , 1971 .

[4]  J. Kohlmann,et al.  Synthesis of precision AC waveforms using a SINIS Josephson junction array , 2002, Conference Digest Conference on Precision Electromagnetic Measurements.

[5]  E. Mohns,et al.  Characterization of a High-Resolution Analog-to-Digital Converter with an Ac Josephson Voltage Source , 2004, 2004 Conference on Precision Electromagnetic Measurements.

[6]  Wan-Seop Kim,et al.  Analog-to-digital conversion for low-frequency waveforms based on the Josephson voltage standard , 2010 .

[7]  C. Hamilton,et al.  Josephson D/A converter with fundamental accuracy , 1995 .

[8]  Samuel P. Benz,et al.  Application of the Josephson effect to voltage metrology , 2004, Proceedings of the IEEE.

[9]  P. Patel,et al.  Investigation of binary Josephson arrays for arbitrary waveform synthesis , 2002 .

[10]  Luca Callegaro,et al.  Josephson-Voltage-Standard-Locked Sine Wave Synthesizer: Margin Evaluation and Stability , 2009, IEEE Transactions on Instrumentation and Measurement.

[11]  Ralf Behr,et al.  Quantum-referenced voltage waveform synthesiser , 2011 .

[12]  Thomas L. Nelson,et al.  Precision Differential Sampling Measurements of Low-Frequency Synthesized Sine Waves With an AC Programmable Josephson Voltage Standard , 2009, IEEE Transactions on Instrumentation and Measurement.