Title :
A microprocessor-controlled current-comparator-based DC voltage calibrator
Author_Institution :
Division of Electrical Engineering, National Research Council of Canada, Ottawa, Ont. K1A 0R8, Canada
fDate :
6/1/1987 12:00:00 AM
Abstract :
A microprocessor-controlled current-comparator-based dc voltage calibrator is described. A self-balancing dc comparator is used to establish voltages proportional to a reference signal. The calibrator features an automatic self-calibration mode, two ranges of −10 to +10 V and −120 to +120 V with an output uncertainty of less than 2 and 3 parts per million (ppm) of full scale, respectively, a resolution of 1 ppm, and a linearity error of less than 1 ppm of full scale.
Keywords :
Gain measurement; Measurement uncertainty; Optical switches; Uncertainty; Windings;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
DOI :
10.1109/TIM.1987.6312689
