1、 IEC 62153-4-10 Edition 2.0 2015-11 INTERNA TIONAL STA NDA RD Metallic communication cable test methods Part 4-10:Electromagnetic compatibility(EMC)Transfer impedance and screening attenuation of feed-throughs and electromagnetic gask ets Double coaxial test method IEC 62153-4-10:2015-11(en)colourin
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11、e Centre:csciec.ch.Copyright International Electrotechnical Commission IEC 62153-4-10 Edit ion 2.0 2015-11 INTER NA TIONAL STA NDA R D Metallic communication cable test methods Part 4-10:Electromagnetic compatibility(EMC)Transfer impedance and screening attenuation of feed-throughs and electromagnet
12、ic gask ets Double coaxial test method INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 33.100;33.120.10 ISBN 978-2-8322-2993-4 R egist er ed tr ademar k of t he Int er national Electr ot echnical Commission Warning!Make sure that you obtained this publication from an authorized distributor.colourinsid
13、eCopyright International Electrotechnical Commission 2 IEC 62153-4-10:2015 IEC 2015 CONTENTS FOREWORD.4 1 Scope.6 2 Normative references.6 3 Terms and definitions.6 4 Principle of the test method.9 5 Procedure.12 5.1 Equipment.12 5.2 Dynamic range.12 5.3 Verification of the test set-up.12 5.4 Sample
14、 preparation.12 6 Measurement.12 6.1 General.12 6.2 Screening attenuation.12 6.3 Transfer impedance.12 7 Expression of results.13 7.1 Transfer impedance.13 7.2 Screening attenuation.13 7.3 Requirements.13 Annex A(informative)Background for the measurement of the shielding effectiveness of feed-throu
15、ghs and electromagnetic gaskets.14 A.1 General.14 A.2 Theoretical model of the test procedure.15 A.3 Performing measurements.16 A.3.1 Characteristic impedance uniformity of the test fixture.16 A.3.2 Measuring EMI-gaskets by using a NWA.16 A.3.3 Pictures and measurement results.17 Annex B(informative
16、)Reference device for verification measurement.23 B.1 General.23 B.2 Design of the reference device.23 B.3 Verification measurement result.24 Annex C(informative)Impact of ground loops on low frequency measurements.25 C.1 General.25 C.2 Analysis of the test set-up.25 Bibliography.28 Figure 1 A two-port.7 Figure 2 Equivalent circuit of the test set-up and definition of ZT.7 Figure 3 Cross-section of a typical feed-through configuration.10 Figure 4 Cross-section of the test fixture with a connecto