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GB/Z 17624.6-2021Electromagnetic compatibility - General - Part 6: Guide to the assessment of measurement uncertainty (English PDF)

电磁兼容 综述 第6部分 测量不确定度评定指南

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

October 11, 2021

Implementation date

October 11, 2021

Scope

GB/Z 17624.6-2021 is the English-translated version of 电磁兼容 综述 第6部分 测量不确定度评定指南.

GB/Z 17624.6-2021 is the Chinese standard "Electromagnetic compatibility - General - Part 6: Guide to the assessment of measurement uncertainty".

Its scope clause reads: This document provides the evaluation method and background information of the measurement uncertainty, and gives the relevant national standards (from the IEC 61000 series of standards) Transformation) guide to general considerations of measurement uncertainty.

The purpose of this document is to provide advice on the preparation of measurement uncertainty reports for technical committees, product committees and conformity assessment agencies.

It is allowed to compare these reports between laboratories with similar influence; it makes the domestic electromagnetic compatibility (EMC) related The technical committee's treatment of measurement uncertainty is consistent.

Any influencing factors of measurement uncertainty mentioned in this document should be regarded as examples. Technical committee responsible for formulating basic immunity standards It will be responsible for identifying the factors influencing the measurement uncertainty of its basic test method.

This document describes the following. ---Measurement uncertainty (MU) evaluation method; ---The mathematical formula of the probability density function; ---Analysis and evaluation of statistical evaluation; ---Revision of measurement data; ---document.

This document does not summarize the influence of all measurement uncertainties, nor does it specify how to consider when determining compliance with EMC requirements Uncertainty of measurement.

Note. Some examples given in this document are from other IEC publications other than the IEC 61000 series of standards that have completed the evaluation procedures described here. These examples are used to illustrate the principle.

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Document preview — GB/Z 17624.6-2021

National Standard of the People's Republic of China

ICS
33.100
Classification
L 06

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Contents

  • Foreword
  • Introduction
  • 1 Scope
  • 2 Normative references
  • 3 Terms, definitions, symbols and abbreviations
  • 3.1 Terms and definitions
  • 3.2 Symbol
  • 3.3 Abbreviations
  • 4 General
  • 4.1 Overview
  • 4.2 Classification of uncertainty components
  • 4.3 Limitations of GUM
  • 4.4 Principle
  • 5 Implementation of Measurement Uncertainty Evaluation
  • 5.1 Basic steps
  • 5.2 Probability density function
  • 5.2.1 Rectangle
  • 5.2.2 Triangle
  • 5.2.3 Gauss
  • 5.2.4 U-shaped
  • 5.3 Concept of Uncertainty Type A and Type B Evaluation
  • 5.3.1 General considerations
  • 5.3.2 Type A evaluation of standard uncertainty
  • 5.3.3 Type B evaluation of standard uncertainty
  • 5.4 Sampling statistics
  • 5.4.1 General considerations
  • 5.4.2 Sample mean and sample standard deviation
  • 5.4.3 Sample coefficient of variation
  • 5.4.4 Confidence interval limit of sample statistics
  • 5.4.5 Sample distribution and sample statistics of the mean
  • 5.4.6 Sample distribution and sample statistics of standard deviation
  • 5.5 Conversion between linear quantity and decibel quantity (pair quantity)
  • 5.5.1 Overview
  • 5.5.2 Normal distribution fluctuation
  • 5.5.3 Evenly distributed fluctuations
  • 6 Applicability of measurement uncertainty
  • 7 Measurement uncertainty calculation file
  • Appendix A (informative) Example of MU evaluation for emission measurement
  • Appendix B (informative) Example of MU evaluation for the set value of the immunity test level
  • References

1 Scope

This document provides the evaluation method and background information of the measurement uncertainty, and gives the relevant national standards (from the IEC 61000 series of standards)

Transformation) guide to general considerations of measurement uncertainty.

The purpose of this document is to provide advice on the preparation of measurement uncertainty reports for technical committees, product committees and conformity assessment agencies.

It is allowed to compare these reports between laboratories with similar influence; it makes the domestic electromagnetic compatibility (EMC) related

The technical committee's treatment of measurement uncertainty is consistent.

Any influencing factors of measurement uncertainty mentioned in this document should be regarded as examples. Technical committee responsible for formulating basic immunity standards

It will be responsible for identifying the factors influencing the measurement uncertainty of its basic test method.

This document describes the following.

---Measurement uncertainty (MU) evaluation method;

---The mathematical formula of the probability density function;

---Analysis and evaluation of statistical evaluation;

---Revision of measurement data;

---document.

This document does not summarize the influence of all measurement uncertainties, nor does it specify how to consider when determining compliance with EMC requirements

Uncertainty of measurement.

Note. Some examples given in this document are from other IEC publications other than the IEC 61000 series of standards that have completed the evaluation procedures described here.

These examples are used to illustrate the principle.

2 Normative references

The content of the following documents constitutes an indispensable clause of this document through normative references in the text. Among them, dated quotations

Only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to

This document.

ISO /IEC Guide98-3.2008 Measurement Uncertainty Part 3.Guidelines for Expression of Measurement Uncertainty (GUM.1995).2008

Amendment to the first edition of the year [Uncertaintyofmeasurement-Part 3.Guidetotheexpressionofuncertaintyinmeas- urement(GUM.1995),corrected1stedition,2008]

IEC 60050-161 International Electrotechnical Vocabulary (IEV) Chapter 161.Electromagnetic Compatibility [Internationalelectrotechnicalvocab- ulary(IEV)-Chapter161.Electromagneticcompatibility]

CISPR16-1-1 Radio Disturbance and Immunity Measurement Equipment and Measurement Method Specification Part 1-1.Radio Disturbance and Immunity

Degree measuring equipment measuring equipment (Specificationforradiodisturbanceandimmunitymeasuringapparatusand methods-Part 1-1.Radiodisturbanceandimmunitymeasuringapparatus-Measuringapparatus)

CISPR16-4-2 Specification for Radio Disturbance and Immunity Measurement Equipment and Measurement Methods Part 4-2.Uncertainty, Statistics and

Limit modeling measurement equipment and facility uncertainty (Specificationforradiodisturbanceandimmunitymeasuring apparatusandmethods-Part 4-2.Uncertainties,statisticsandlimitmodeling-Measurementinstru- mentationuncertainty) […]

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 49 pages — is available in the English PDF.

Referenced standards

Normative references

ISO/IEC Guide 98-3:2008 · IEC 60050-161 · CISPR 16-1-1 · CISPR 16-4-2

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