This part of<\/p>\n
The objectives of this Technical Report are to give advice to technical committees, product committees and conformity assessment bodies on the development of measurement uncertainty budgets; to allow the comparison of these budgets between laboratories that have similar influence quantities; and to align the treatment of measurement uncertainty across the EMC committees of the IEC.<\/p>\n
Any contributing factor to measurement uncertainty that is mentioned within this Technical Report shall be treated as an example: the technical committee responsible for the preparation of a basic immunity standard is responsible for identifying the factors that contribute to the measurement uncertainty of their basic test method.<\/p>\n
It gives a description for<\/p>\n
a method for the assessment of measurement uncertainty (MU),<\/p>\n<\/li>\n
mathematical formulas for probability density functions,<\/p>\n<\/li>\n
analytical assessment of statistical evaluations,<\/p>\n<\/li>\n
correction of measured data,<\/p>\n<\/li>\n
documentation.<\/p>\n<\/li>\n<\/ul>\n
This Technical Report is not intended to summarize all measurement uncertainty influence quantities nor is it intended to define how measurement uncertainty is to be taken into account in determining compliance with an EMC requirement.<\/p>\n
Some of the examples given in this report are taken from IEC publications other than the IEC 61000<\/span> <\/span> series that have already implemented the evaluation procedure presented here. These examples are used to illustrate the principles.<\/p>\n<\/div>\n Electromagnetic compatibility (EMC) – General. Guide to the assessment of measurement uncertainty<\/b><\/p>\nPDF Catalog<\/h4>\n
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\n PDF Pages<\/th>\n PDF Title<\/th>\n<\/tr>\n \n 4<\/td>\n CONTENTS <\/td>\n<\/tr>\n \n 6<\/td>\n FOREWORD <\/td>\n<\/tr>\n \n 8<\/td>\n INTRODUCTION <\/td>\n<\/tr>\n \n 9<\/td>\n 1 Scope
2 Normative references <\/td>\n<\/tr>\n\n 10<\/td>\n 3 Terms, definitions, symbols and abbreviations
3.1 Terms and definitions <\/td>\n<\/tr>\n\n 16<\/td>\n 3.2 Symbols <\/td>\n<\/tr>\n \n 17<\/td>\n 3.3 Abbreviations <\/td>\n<\/tr>\n \n 18<\/td>\n 4 General
4.1 Overview
4.2 Classification of uncertainty contributions
Figures
Figure\u00a01 \u2013 Classification of uncertainty components associated with the experimental evaluation of uncertainty in EMC testing and measurement <\/td>\n<\/tr>\n\n 20<\/td>\n 4.4 Principles <\/td>\n<\/tr>\n \n 21<\/td>\n Figure\u00a03 \u2013 Example of g(x\u2019)
Figure\u00a04 \u2013 Impact of g(x) on interpretation of x\u2019 <\/td>\n<\/tr>\n\n 22<\/td>\n 5 Measurement uncertainty budget development
5.1 Basic steps
Figure\u00a05 \u2013 Estimate returned by the measurement system
Tables
Table\u00a01 \u2013 Basic steps for calculating MU <\/td>\n<\/tr>\n\n 25<\/td>\n Table\u00a02 \u2013 Expressions used to obtain standard uncertainty <\/td>\n<\/tr>\n \n 26<\/td>\n 5.2 Probability density functions
5.2.1 Rectangular <\/td>\n<\/tr>\n\n 27<\/td>\n Figure\u00a06 \u2013 Rectangular PDF <\/td>\n<\/tr>\n \n 28<\/td>\n 5.2.2 Triangular <\/td>\n<\/tr>\n \n 29<\/td>\n Figure\u00a07 \u2013 Triangular PDF <\/td>\n<\/tr>\n \n 30<\/td>\n 5.2.3 Gaussian <\/td>\n<\/tr>\n \n 31<\/td>\n Figure\u00a08 \u2013 Normal PDF for standardized X <\/td>\n<\/tr>\n \n 34<\/td>\n 5.2.4 U-Shape <\/td>\n<\/tr>\n \n 35<\/td>\n Figure\u00a09 \u2013 U-shaped PDF
Figure\u00a010 \u2013 Example of a circuit <\/td>\n<\/tr>\n\n 37<\/td>\n 5.3 Concept of Type A and Type B evaluation of uncertainty
5.3.1 General considerations
Table\u00a03 \u2013 Examples of circuit parameters <\/td>\n<\/tr>\n\n 38<\/td>\n 5.3.2 Type A evaluation of standard uncertainty <\/td>\n<\/tr>\n \n 41<\/td>\n Table\u00a04 \u2013 Values of the expansion coefficient \u03b7(\u03bd) which transforms the standard deviation to the Type A standard uncertainty <\/td>\n<\/tr>\n \n 42<\/td>\n 5.3.3 Type B evaluation of standard uncertainty <\/td>\n<\/tr>\n \n 44<\/td>\n 5.4 Sampling statistics
5.4.1 General considerations
5.4.2 Sample mean and sample standard deviation <\/td>\n<\/tr>\n\n 45<\/td>\n 5.4.3 Sample coefficient of variation
5.4.4 Limits of sample-statistical confidence intervals <\/td>\n<\/tr>\n\n 46<\/td>\n 5.4.5 Sampling distribution and sampling statistics of mean value <\/td>\n<\/tr>\n \n 48<\/td>\n Figure 11 \u2013 Limits of 95 %, 99 % and 99,5 % confidence intervals for W as a function of N for measurements using a rectilinear antenna or single-axis probe <\/td>\n<\/tr>\n \n 49<\/td>\n 5.4.6 Sampling distribution and sampling statistics of standard deviation
Figure 12 \u2013 Limits of 95 %, 99 % and 99,5 % confidence intervals for A as afunction of N for measurements using a rectilinear antenna or single-axis probe <\/td>\n<\/tr>\n\n 50<\/td>\n Figure\u00a013 \u2013 95\u00a0% confidence intervals for SX as a function of N for measurements using a single-axis detector <\/td>\n<\/tr>\n \n 51<\/td>\n 5.5 Conversion from linear quantities to decibel and vice versa
5.5.1 General considerations
5.5.2 Normally distributed fluctuations <\/td>\n<\/tr>\n\n 53<\/td>\n Figure 14 \u2013 PDF of B for a Rayleigh distributed A at selected \u03c3 <\/td>\n<\/tr>\n \n 54<\/td>\n 5.5.3 Uniformly distributed fluctuations
6 Applicability of measurement uncertainty <\/td>\n<\/tr>\n\n 55<\/td>\n Figure\u00a015 \u2013 Measurement uncertainty budget for a quantityto be realized in the test laboratory <\/td>\n<\/tr>\n \n 56<\/td>\n Figure\u00a016 \u2013 Relationship between measurement uncertainty budgets for a quantity to be realized in the test laboratory and tolerances given for this quantity in the applicable basic standard <\/td>\n<\/tr>\n \n 57<\/td>\n Figure\u00a017 \u2013 Situations, where and how an instrument is suitable for tests and\/or measurements as specified in the applicable basic standard with tolerances <\/td>\n<\/tr>\n \n 58<\/td>\n 7 Documentation of measurement uncertainty calculation <\/td>\n<\/tr>\n \n 59<\/td>\n Annex A (informative) Example of MU assessment for emission measurements <\/td>\n<\/tr>\n \n 60<\/td>\n Table\u00a0A.1 \u2013 Radiated disturbance measurements from 1\u00a0GHz to 18\u00a0GHzin a FAR at a distance of 3\u00a0m <\/td>\n<\/tr>\n \n 62<\/td>\n Figure\u00a0A.1 \u2013 Deviation of the peak detector level indication from the signal level at receiver input for two cases, a sine-wave signal and an impulsive signal (PRF 100\u00a0Hz) <\/td>\n<\/tr>\n \n 66<\/td>\n Annex B (informative) Example of MU assessment for an immunity test level setting <\/td>\n<\/tr>\n \n 67<\/td>\n Table\u00a0B.1 \u2013 Uncertainty budget of the radiated immunity test level (80\u00a0MHz \u2013 1\u00a0000\u00a0MHz) <\/td>\n<\/tr>\n \n 69<\/td>\n Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" \n\n
\n Published By<\/td>\n Publication Date<\/td>\n Number of Pages<\/td>\n<\/tr>\n \n BSI<\/b><\/a><\/td>\n 2014<\/td>\n 74<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":242216,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[624,2641],"product_tag":[],"class_list":{"0":"post-242213","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-33-100-01","7":"product_cat-bsi","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/242213","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/242216"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=242213"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=242213"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=242213"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}