1、 IEC 61156-9 Edition 1.0 2016-04 INTERNATIONAL STANDARD Multicore and symmetrical pair/quad cables for digital communications Part 9:Cables for channels with transmission characteristics up to 2 GHz Sectional specification IEC 61156-9:2016-04(en)THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2016
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10、ch/csc If you wish to give us your feedback on this publication or need further assistance,please contact the Customer Service Centre:csciec.ch.IEC 61156-9 Edition 1.0 2016-04 INTERNATIONAL STANDARD Multicore and symmetrical pair/quad cables for digital communications Part 9:Cables for channels with
11、 transmission characteristics up to 2 GHz Sectional specification INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 33.120.20 ISBN 978-2-8322-3350-4 Registered trademark of the International Electrotechnical Commission Warning!Make sure that you obtained this publication from an authorized distributor.2
12、 IEC 61156-9:2016 IEC 2016 CONTENTS FOREWORD.4 1 Scope.6 2 Normative references.6 3 Terms and definitions.7 4 Installation considerations.7 5 Materials and cable construction.7 6 Characteristics and requirements.7 6.1 General remarks.7 6.2 Electrical characteristics and tests.8 6.2.1 Conductor resis
13、tance.8 6.2.2 Resistance unbalance.8 6.2.3 Dielectric strength.8 6.2.4 Insulation resistance.8 6.2.5 Mutual capacitance.8 6.2.6 Capacitance unbalance.8 6.2.7 Transfer impedance.8 6.2.8 Coupling attenuation.8 6.2.9 Current-carrying capacity.9 6.3 Transmission characteristics.9 6.3.1 Velocity of propa
14、gation(phase velocity).9 6.3.2 Phase delay and differential delay(delay skew).9 6.3.3 Attenuation().9 6.3.4 Unbalance attenuation(TCL).10 6.3.5 Near-end crosstalk(NEXT).10 6.3.6 Far-end crosstalk(ACR-F).11 6.3.7 Alien(exogenous)near-end crosstalk(ANEXT).11 6.3.8 Alien(exogenous)far-end crosstalk(AFE
15、XT).12 6.3.9 Alien(exogenous)crosstalk of bundled cables.12 6.3.10 Impedance.12 6.3.11 Return loss(RL).12 6.4 Mechanical and dimensional characteristics and requirements.13 6.4.1 Dimensional requirements.13 6.4.2 Elongation at break of the conductors.13 6.4.3 Tensile strength of the insulation.13 6.
16、4.4 Elongation at break of the insulation.13 6.4.5 Adhesion of the insulation to the conductor.13 6.4.6 Elongation at break of the sheath.13 6.4.7 Tensile strength of the sheath.13 6.4.8 Crush test of the cable.13 6.4.9 Impact test of the cable.13 6.4.10 Bending under tension.13 6.4.11 Repeated bending of the cable.14 6.4.12 Tensile performance of the cable.14 6.4.13 Shock-test requirements of the cable.14 6.4.14 Bump-test requirements of the cable.14 6.4.15 Vibration-test requirements of a cabl
