Measurement
Measurement
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Technical committeeTypeAcronymISO/IEC GUIDE 98-3:2008/SUPPL 2:2011CommitteePublished year2011KeywordsDescription
ISO/IEC Guide 98-3:2008/Suppl.2:2011 is concerned with measurement models having any number of input quantities and any number of output quantities. The quantities involved might be real or complex. Two approaches are considered for treating such models. The first approach is a generalization of the GUM uncertainty framework. The second is a Monte Carlo method as an implementation of the propagation of distributions. Appropriate use of the Monte Carol method would be expected to provide valid results when the applicability of the GUM uncertainty framework is questionable.
For a prescribed coverage probability, ISO/IEC Guide 98-3:2008/Suppl.2:2011 can be used to provide a coverage region for the output quantities of a multivariate model, the counterpart of a coverage interval for a single scalar output quantiy. The provision of coverage regions includes those taking the form of a hyper-ellipsoid or a hyper-rectangle. These coverage regions are produced from the results of the two approaches described here. A procedure for providing an approximation to the smallest coverage region, obtained from results provided by the Monte Carol method, is also given. Detailed examples to illustrate the guidance are provided.
Technology -
Technical committeeTypeAcronymIEC 60904-1:2020CommitteePublished year2020Description
This part of IEC 60904 describes procedures for the measurement of current-voltage
characteristics of photovoltaic devices in natural or simulated sunlight. These procedures are
applicable to a single photovoltaic solar cell, a sub-assembly of photovoltaic solar cells, or a
PV module.
NOTE 1 This standard may be applicable to multi-junction test specimens, if each sub-junction generates the
same amount of current as it would under the reference AM1,5 spectrum in IEC 60904-3.
NOTE 2 This standard may be applicable to PV devices designed for use under concentrated irradiation if they
are irradiated using direct normal irradiance and a mismatch correction with respect to a direct normal reference
spectrum is performed.
The purpose of this standard is to lay down basic requirements for the measurement of
current-voltage characteristics of photovoltaic devices, to define procedures for different
measuring techniques in use and to show practices for minimising measurement uncertainty.Technology