EVALUATION OF THE MEASUREMENT UNCERTAINTY OF PC-BASED INSTRUMENTS BY USING THE EFFECTIVE NUMBER OF BITS

Salvatore Nuccio, Ciro Spataro

Abstract

The paper deals with the measurement uncertainty evaluation of the PC-based measurement instruments, by using the effective number of bits, that is a well know parameter, usually employed to characterise the overall behaviour of an A/D converter. In order to verify if this parameter can be also used to assess the measurement uncertainty, we use an ad-hoc developed software tool. The results show that using the effective number of bits can lead to an underestimate of the uncertainties.

Keywords

Measurement Uncertainty, PC-Based Measurement Instrument, A/D Conversion

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IMEKO-IWADC-2003-40.pdf

DOI

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IMEKO TC

TC4 - Measurement of Electrical Quantities

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