IEC-CISPR-TR-16-4-5-2006.pdf
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1、 TECHNICAL REPORT CISPR 16-4-5 First edition 2006- 10 Specification for radio disturbance and immunity measuring apparatus and methods Part 4-5: Uncertainties, statistics and limit modelling Conditions for the use of alternative test methods Reference number CISPR 16- 4- 5/TR:2006(E) INTERNATIONAL S
2、PECIAL COMMITTEE ON RADIO INTERFERENCE Publication numbering As from 1 January 1997 all IEC publications are issued with a designation in the 60000 series. For example, IEC 34-1 is now referred to as IEC 60034-1. Consolidated editions The IEC is now publishing consolidated versions of its publicatio
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4、nstant review by the IEC, thus ensuring that the content reflects current technology. Information relating to this publication, including its validity, is available in the IEC Catalogue of publications (see below) in addition to new editions, amendments and corrigenda. Information on the subjects un
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8、omer Service Centre: Email: custserviec.ch Tel: +41 22 919 02 11 Fax: +41 22 919 03 00 TECHNICAL REPORT CISPR 16-4-5 First edition 2006- 10 Specification for radio disturbance and immunity measuring apparatus and methods Part 4-5: Uncertainties, statistics and limit modelling Conditions for the use
9、of alternative test methods For price, see current catalogue IEC 2006 Copyright - all rights reserved No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publishe
10、r. International Electrotechnical Commission, 3, rue de Varemb, PO Box 131, CH- 1211 Geneva 20, Switzerland Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E- mail: inmailiec.ch Web: www.iec.ch X Commission Electrotechnique Internationale International Electrotechnical Commission PRICE CODE IN
11、TERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE -,-,- 2 TR CISPR 16-4-5 IEC:2006(E) CONTENTS FOREWORD.4 1 Scope.6 2 Normative references .6 3 Terms and definitions .6 4 Symbols and abbreviated terms7 5 Introduction 8 6 Procedure to derive limits for an alternative test method.9 6.1 Overview.9 6.
12、2 Select the reference quantity X12 6.3 Describe the test methods and measurands 12 6.4 Determine the deviations of the measured quantities from the reference quantity.13 6.5 Determine the average values of the deviations 13 6.6 Estimate the standard uncertainties of the test methods14 6.7 Estimate
13、the expanded uncertainties of the test methods 15 6.8 Calculate the average conversion factor16 6.9 Verify the calculated values.17 6.10 Apply the conversion .17 Annex A (informative) Remarks on EUT modelling.18 Annex B (informative) Examples of application of the test method comparison procedure .1
14、9 Bibliography49 Figure 1 Overview of quantities to estimate for use in conversion procedure10 Figure 2 Overview of limit conversion procedure using estimated quantities.11 Figure B.1 Example reference quantity 19 Figure B.2 EUT and antenna set-up for fully anechoic room emission measurement 20 Figu
15、re B.3 EUT and antenna set-up for open-area test site measurement20 Figure B.4 Radiation characteristics of elementary radiator (left), and scheme of EUT-model (right) .21 Figure B.5 Maximum average deviations for 3 m FAR (top) and 10 m OATS (bottom) 24 Figure B.6 Sample cumulative distribution func
16、tion 26 Figure B.7 Uncertainties due to the unknown EUT characteristic for 3 m FAR (top) and 10 m OATS (bottom) 28 Figure B.8 Expanded uncertainties (k = 2) of alternative (3 m FAR, top) and established (10 m OATS, bottom) test methods 32 Figure B.9 Maximum average conversion factors for different v
17、olumes 33 Figure B.10 Photo (left) and cut-view of simulation model (right) of the specimen EUT 35 Figure B.11 Deviations of the specimen EUT: 3 m fully anechoic room (top) and 10 m open area test site (bottom)36 Figure B.12 Sample FAR measurement .37 Figure B.13 OATS 10 m limit line converted to FA
18、R 3 m conditions37 TR CISPR 16-4-5 IEC:2006(E) 3 Figure B.14 Expanded uncertainties.37 Figure B.15 Comparison of the measured values with the corrected converted limit.38 Figure B.16 EUT and antenna set-up of 3 m open area test site measurement.39 Figure B.17 Maximum average deviations for 3 m OATS4
19、0 Figure B.18 Uncertainties due to the unknown EUT characteristic for 3 m OATS41 Figure B.19 Expanded uncertainties (k = 2) of alternative test method OATS (3 m)43 Figure B.20 Maximum average conversion factors .44 Figure B.21 Deviations of the specimen EUT: Open area test site (3 m).46 Figure B.22
20、Sample OATS (3 m) measurement47 Figure B.23 OATS (10 m) limit line converted to OATS (3 m) conditions 47 Figure B.24 Expanded uncertainties.48 Figure B.25 Comparison of the corrected values with the converted limit .48 Table 1 Summary of steps in conversion procedure .9 Table 2 Overview of quantitie
21、s and defining equations for conversion process.12 Table B.1 Instrumentation uncertainty of the 3 m fully anechoic chamber test method .25 Table B.2 Uncertainties in dB due to the unknown EUT characteristic for 3 m FAR 30 Table B.3 Uncertainties in dB due to the unknown EUT characteristic for 10 m O
22、ATS31 Table B.4 Maximum average conversion factors in dB between 10 m OATS and 3 m FAR .34 Table B.5 Uncertainties in dB due to the unknown EUT characteristic for 3 m OATS42 Table B.6 Maximum average conversion factors in dB between 10 m and 3 m OATS.45 -,-,- 4 TR CISPR 16-4-5 IEC:2006(E) INTERNATIO
23、NAL ELECTROTECHNICAL COMMISSION _ SPECIFICATION FOR RADIO DISTURBANCE AND IMMUNITY MEASURING APPARATUS AND METHODS Part 4-5: Uncertainties, statistics and limit modelling Conditions for the use of alternative test methods FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide
24、 organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activi
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