Title :
Differential Sampling Measurement of a 7 V RMS Sine Wave With a Programmable Josephson Voltage Standard
Author :
Rufenacht, Alain ; Burroughs, Charles J. ; Dresselhaus, Paul D. ; Benz, Samuel P.
Author_Institution :
Nat. Inst. of Stand. & Technol., Boulder, CO, USA
Abstract :
A 10 V programmable Josephson voltage standard has enabled sine waves with voltages up to 7 V RMS to be accurately measured with a differential sampling measurement technique. Expanding the voltage range for this technique enables the direct calibration of the low-frequency ranges of commercial calibrators in the ac voltage mode. This paper reviews the practically achievable performance and challenges of the differential sampling measurement technique that arise when measuring RMS voltages greater than a few volts. A relative Type A uncertainty of 4 parts in 107 was achieved with the technique when measuring a 7 V RMS sine wave generated by a calibrator at 62.5 Hz.
Keywords :
calibration; least mean squares methods; measurement standards; measurement uncertainty; signal sampling; superconducting junction devices; voltage measurement; AC voltage mode; RMS; calibration; commercial calibrator; differential sampling measurement; frequency 62.5 Hz; measurement uncertainty; programmable Josephson voltage standard; sine wave; voltage 10 V; voltage 7 V; voltage measurement; Apertures; Measurement uncertainty; Sampling methods; Standards; Uncertainty; Voltage measurement; Voltmeters; Analog-digital conversion; Josephson arrays; power measurement; quantization; signal synthesis; standards; superconductor–normal–superconductor devices; voltage measurement;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
DOI :
10.1109/TIM.2013.2237993
