ANALYSIS OF THE VARIABILITY OF SYSTEMATIC ERRORS IN ADC-BASED INSTRUMENTS

F. Attivissimo, G. Cannazza, A. Cataldo, L. Fabbiano, N. Giaquinto

Abstract

The paper deals with the problem of assessing the uncertainty due to systematic errors, especially in ADC or ADC-based instruments. The problem of defining and assessing systematic errors is briefly discussed, and the conceptual scheme of gage repeatability & reproducibility is adopted. Experiments are conducted in various conditions, and it is shown that modeling the variability of systematic errors is more problematic than suggested in the ISO 5725 norm. The solution to the problem of assessing the overall uncertainty is outlined through an in-depth analysis of all the separate causes of variations in measurements.

Keywords

uncertainty, systematic effects, digital instruments, A/D converters

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IMEKO-IWADC-2010-038.pdf

DOI

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IMEKO TC

TC4 - Measurement of Electrical Quantities

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