1、 IEC 62153-4-9Edition 1.0 2008-03INTERNATIONAL STANDARD Metallic communication cable test methods Part 4-9:Electromagnetic compatibility(EMC)Coupling attenuation of screened balanced cables,triaxial method IEC 62153-4-9:2008(E)LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCAT
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9、iec.ch Tel.:+41 22 919 02 11 Fax:+41 22 919 03 00 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.IEC 62153-4-9Edition 1.0 2008-03INTERNATIONAL STANDARD Metallic communication cable test methods Part 4-9:Electromagnetic compatibility(E
10、MC)Coupling attenuation of screened balanced cables,triaxial method INTERNATIONAL ELECTROTECHNICAL COMMISSION PICS 33.100;33.120.20 PRICE CODEISBN 2-8318-9661-4 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.2 62153-4-9 IEC:2008(E)CON
11、TENTS FOREWORD.3 1 Scope.5 2 Normative references.5 3 Terms,definitions and symbols.5 4 Principle of the measuring method.7 5 Theoretical background.7 5.1 Unbalanced attenuation au.7 5.2 Screening attenuation as.8 5.3 Coupling attenuation ac.9 6 Measurement.9 6.1 Equipment.9 6.2 Balun requirements.1
12、0 6.3 Sample preparation.11 6.4 Procedure.12 6.5 Measurement Precautions.12 7 Expression of results.12 8 Requirements.12 9 Plots of coupling attenuation versus frequency-typical results.13 Bibliography.15 Figure 1 Principle test set-up.7 Figure 2 Set-up to measure the coupling attenuation.10 Figure
13、3 Termination of the cable under test.11 Figure 4 Twinax 105 log.13 Figure 5 Twinax 105 linear.13 Figure 6 FTP log.14 Figure 7 FTP linear.14 Table 1 Balun performance characteristics(1 MHz to 1 GHz).11 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK
14、 SUPPLY BUREAU.62153-4-9 IEC:2008(E)3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ METALLIC COMMUNICATION CABLE TEST METHODS Part 4-9:Electromagnetic compatibility(EMC)Coupling attenuation of screened balanced cables,triaxial method FOREWORD 1)The International Electrotechnical Commission(IEC)is a wo
15、rldwide 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 ac
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