Dean G. Jarrett

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At the National Institute of Standards and Technology (NIST), the U.S. representation of the ohm is based on the quantum Hall effect, and it is maintained and disseminated at various resistance levels by working reference groups of standards. This document describes the measurement systems and procedures used to calibrate standard resistors and current(More)
A bridge to calibrate programmable and manual inductive voltage dividers is described. The bridge is based on a programmable 30 b binary inductive voltage divider with terminal linearity of kO.1 ppm in phase and &2 ppm quadrature at 400 Hz. Measurements of programmable test dividers can be automated using software developed to align the bridge components(More)