1、 IEC 61935-1Edition 3.0 2009-07INTERNATIONAL STANDARD Specification for the testing of balanced and coaxial information technology cabling Part 1:Installed balanced cabling as specified in ISO/IEC 11801 and related standards IEC 61935-1:2009(E)LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL
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9、tact us:Email:csciec.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 61935-1Edition 3.0 2009-07INTERNATIONAL STANDARD Specification for the testing of balanced and coaxial information t
10、echnology cabling Part 1:Installed balanced cabling as specified in ISO/IEC 11801 and related standards INTERNATIONAL ELECTROTECHNICAL COMMISSION XEICS 33.120.10 PRICE CODEISBN 2-8318-1051-8 Registered trademark of the International Electrotechnical Commission LICENSED TO MECON Limited.-RANCHI/BANGA
11、LOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.2 61935-1 IEC:2009(E)CONTENTS FOREWORD.8 INTRODUCTION.10 1 Scope.11 2 Normative references.12 3 Terms and definitions.13 4 Reference measurement procedures for electrical properties.15 4.1 General.15 4.2 Test equipment conside
12、rations.15 4.2.1 General.15 4.2.2 Network analyzer test requirements.15 4.2.3 Termination of conductor pairs.16 4.2.4 Reference loads for calibration.17 4.2.5 Test configurations.17 4.2.6 Coaxial cables and test leads for network analyzers.18 4.2.7 Balun requirements.19 4.2.8 Network analyzer measur
13、ement precautions.20 4.2.9 Data reporting and accuracy.21 4.3 DC loop resistance.21 4.3.1 Objective.21 4.3.2 Test method.22 4.3.3 Test equipment and set-up.22 4.3.4 Procedure.22 4.3.5 Test report.22 4.3.6 Uncertainty.23 4.4 Direct current(d.c.)resistance unbalance.23 4.4.1 Objective.23 4.4.2 Test me
14、thod.23 4.4.3 Test equipment and set-up.23 4.4.4 Procedure.23 4.4.5 Test report.24 4.4.6 Uncertainty.24 4.5 Insertion loss.24 4.5.1 Objective.24 4.5.2 Test method.24 4.5.3 Test equipment and set-up.25 4.5.4 Procedure.25 4.5.5 Test report.26 4.5.6 Temperature correction.26 4.5.7 Uncertainty.26 4.6 Pr
15、opagation delay and delay skew.26 4.6.1 Objective.26 4.6.2 Test method.26 4.6.3 Test equipment and set-up.27 4.6.4 Procedure.27 4.6.5 Test report.27 4.6.6 Uncertainty.27 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.61935-1 IEC:2009(
16、E)3 4.7 Near-end cross-talk(NEXT)and power sum NEXT.28 4.7.1 Objective.28 4.7.2 Test method.28 4.7.3 Test equipment and set-up.28 4.7.4 Procedure.28 4.7.5 Test report.29 4.7.6 Uncertainty.30 4.8 Attenuation to crosstalk ratio,near end(ACR-N)and power sum ACR-N.30 4.8.1 Objective.30 4.8.2 Test method.30 4.8.3 Test equipment and set-up.30 4.8.4 Procedure.30 4.8.5 Test report.30 4.8.6 Uncertainty.30 4.9 Far-end cross-talk(FEXT)and power sum FEXT.31 4.9.1 Objective.31 4.9.2 Test method.31 4.9.3 Test
