1、 IEC 62153-4-7 Edition 2.0 2015-12 INTER NA TIONAL STA NDA R D Met allic communicat ion cable test met hods Part 4-7:Electromagnetic compat ibility (EMC)Test met hod for measuring of t ransfer impedance ZT and screening at t enuation as or coupling at t enuat ion aC of connect ors and assemblies up
2、t o and abov e 3 GHz Triax ial t ube in t ube met hod IEC 62153-4-7:2015-12(en)colourinsideInternational Electrotechnical Commission THIS PUBLICA TION IS COPYRIGHT PROTECTED Copyright 2015 IEC,Geneva,Switzerland All rights reserved.Unless otherwise specified,no par t of this publication may be repro
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11、his publication or need further assistance,please contact the Customer Serv ice Centre:csciec.ch.International Electrotechnical Commission IEC 62153-4-7 Edit ion 2.0 2015-12 INTER NA TIONAL STA NDA R D Met allic communicat ion cable t est met hods Part 4-7:Elect romagnet ic compat ibility(EMC)Test m
12、et hod for measuring of t ransfer impedance ZT and screening at t enuat ion as or coupling at tenuat ion aC of connect ors and assemblies up t o and abov e 3 GHz Triaxial tube in t ube met hod INTERNATIONA L ELECTROTECHNICA L COMMISSION ICS 33.100;33.120.10 ISBN 978-2-8322-3054-1 R egist er ed tr ad
13、emar k of t he Int er national Electr ot echnical Commission W arning!Make sure that y ou obtained this publication from an authorized distributor.colourinsideInternational Electrotechnical Commission 2 IEC 62153-4-7:2015 IEC 2015 CONTENTS FOREWORD.5 INTRODUCTION.7 1 Scope.8 2 Normative references.8
14、 3 Terms and definitions.8 4 Physical background.10 5 Principle of the test methods.10 5.1 General.10 5.2 Transfer impedance.12 5.3 Screening attenuation.12 5.4 Coupling attenuation.12 6 Test procedure.13 6.1 General.13 6.2 Tube in tube procedure.13 6.3 Test equipment.14 6.4 Calibration procedure.15
15、 6.5 Connection between extension tube and device under test.15 6.6 Dynamic range respectively noise floor.15 6.7 Impedance matching.16 6.8 Influence of Adapters.16 7 Sample preparation.17 7.1 Coaxial connector or device.17 7.2 Balanced or multiconductor device.17 7.3 Cable assembly.19 8 Measurement
16、 of transfer impedance.19 8.1 General.19 8.2 Principle block diagram of transfer impedance.19 8.3 Measuring procedure Influence of connecting cables.19 8.4 Measuring.20 8.5 Evaluation of test results.20 8.6 Test report.20 9 Screening attenuation.21 9.1 General.21 9.2 Impedance matching.21 9.2.1 General.21 9.2.2 Evaluation of test results with matched conditions.22 9.2.3 Measuring with mismatch.22 9.2.4 Evaluation of test results.22 9.3 Test report.23 10 Coupling attenuation.23 10.1 Procedure.23
