BSI 23/30475690 DC 2023
$13.70
BS EN IEC 61935-4. Specification for the testing of balanced and coxial information technology cabling – Part 4. Installed balanced single pair cabling as specified in ISO/IEC 11801-1 and related standards
| Published By | Publication Date | Number of Pages |
| BSI | 2023 | 61 |
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 8 | FOREWORD |
| 10 | INTRODUCTION |
| 11 | 1. Scope |
| 13 | 3. Terms, definitions and abbreviations 3.1 Acronyms 4. Reference measurement procedures for electrical properties 4.1 General 4.2 Common measurement considerations 4.2.1 Test equipment consideration 4.2.2 Network analyser test requirements |
| 14 | 4.2.3 Test set-up 4.2.4 Termination of conductor pairs |
| 15 | 4.2.5 Reference loads for calibration 4.2.6 Test configurations 4.2.7 Coaxial cables and test leads for network analysers 4.2.8 Balanced test leads 4.2.9 Balun requirements |
| 16 | 4.2.10 Balunless 4.2.11 Network analyser measurement precautions 4.2.12 Data reporting and accuracy |
| 17 | 4.2.13 Frequency step size 4.2.14 Mixed Mode S-parameters measurements 4.3 DC loop resistance 4.4 Direct current (DC) resistance unbalance |
| 18 | 4.4.1 Objective 4.4.2 Test method 4.4.3 Test equipment and set-up 4.4.4 Procedure 4.5 Direct current (DC) resistance unbalance between pairs 4.6 Insertion loss 4.6.1 Temperature correction 4.6.2 Uncertainty 4.7 Propagation delay 4.7.1 Objective 4.7.2 Test method |
| 19 | 4.7.3 Test equipment and set-up 4.7.4 Procedure 4.7.4.1 Calibration 4.7.4.2 Measurement 4.7.4.3 Calculation 4.7.5 Test report 4.7.6 Uncertainty 4.8 Near-end cross-talk (NEXT) and power sum NEXT 4.9 Attenuation to crosstalk ratio, near end (ACR-N) and power sum ACR-N |
| 20 | 4.10 Far-end cross-talk (FEXT) and power sum FEXT 4.11 Attenuation to crosstalk ratio, far end (ACR-F) 4.12 PS alien near end crosstalk (PS ANEXT – Exogenous crosstalk) 4.12.1 Objective 4.12.2 Test method 4.12.3 Test equipment and set-up |
| 21 | 4.12.4 Procedure 4.12.4.1 Calibration |
| 22 | 4.12.4.2 Measurement 4.12.4.3 Calculation 4.12.4.4 Test report 4.12.4.5 Uncertainty |
| 23 | 4.13 PS attenuation to alien crosstalk ratio, far end crosstalk (PS AACR-F – Exogenous crosstalk) 4.13.1 Objective 4.13.2 Test method 4.13.3 Test equipment and set-up |
| 25 | 4.13.4 Procedure 4.13.4.1 Calibration 4.13.4.2 Measurement 4.13.4.3 Calculation of PS AACR-F from AFEXT and insertion loss measurements |
| 26 | 4.13.4.4 Test report 4.13.4.5 Uncertainty |
| 27 | 4.14 Unbalance attenuation, near end 4.14.1 Uncertainty 4.15 Unbalance attenuation, far end 4.15.1 Uncertainty 4.16 Coupling attenuation 5. Field test measurement requirements for electrical properties 5.1 Introductory remark |
| 28 | 5.2 Cabling configurations tested 5.3 Field test parameters 5.3.1 General 5.3.2 Optional field test parameters |
| 29 | 5.3.3 Inspection of workmanship and connectivity testing 5.3.3.1 Visual inspection 5.3.3.2 Wire map |
| 30 | 5.3.4 Propagation delay 5.3.5 Length 5.3.6 Insertion loss |
| 31 | 5.3.7 NEXT, power sum NEXT 5.3.8 ACR-N and power sum ACR-N 5.3.9 Return loss 5.3.10 Direct current (DC) loop resistance 5.3.11 Direct current (DC) resistance unbalance between pairs 5.3.12 Alien crosstalk parameters 5.4 Data reporting and accuracy 5.4.1 General 5.4.2 Detailed results |
| 32 | 5.4.3 Summary results |
| 33 | 5.4.4 Reporting requirements for power sum alien crosstalk 5.4.5 General 5.4.6 Consistency checks for field testers 5.4.6.1 General 5.4.6.2 Repeatability of tests on a reference link 5.4.6.3 Repeatability of tests by testing the same link in opposite directions 5.4.7 Evaluation of consistency tests |
| 34 | 5.4.8 Administration system applicability 5.4.9 Test equipment adapter cords for link testing 5.4.10 User cords and channel testing 6. Field tester measurement accuracy requirements 6.1 General |
| 36 | 6.2 Measurement accuracy specifications common to level SP-I, SP-II, and level SP-III field testers |
| 37 | 6.3 Accuracy performance requirements for Level SP-I field testers |
| 39 | 6.4 Accuracy performance requirements for level SP-II field testers |
| 41 | 6.5 Accuracy performance requirements for level SP-III field testers |
| 43 | 6.6 Field tester requirements applicable to alien crosstalk measurements 6.7 Accuracy performance requirements for level V field testers 6.8 Accuracy performance requirements for level VI field testers |
| 44 | 6.9 Field tester requirements applicable to alien crosstalk measurements 6.10 Procedures for determining field tester parameters 6.11 Measurement error models 6.12 Network analyser measurement comparisons |
| 45 | Annex A (informative) Uncertainty and variability of field test results A.1 General A.2 Marginal results reporting A.3 Nominal accuracy |
| 46 | A.4 Variability in link measurements not included in the measurement accuracy A.5 Variability in channel measurements A.6 Field tester accuracy checks A.6.1 General A.6.2 Manipulating cords of link adapter |
| 47 | A.6.3 Exchanging adapters to main and remote field tester units A.6.4 Location of main and remote field tester units A.6.5 Use of previously characterized links A.6.6 Use separately characterized links using laboratory equipment A.6.7 Guidelines for correct installation testing |
| 48 | Annex B (informative) Reference laboratory test configuration for alien crosstalk testing B.1 General B.2 Test parameters B.3 Link and channel construction |
| 49 | B.4 Determination of number of disturbing links or channels |
| 50 | B.5 Computation of results B.5.1 General B.5.2 Computation of Class I and Class II results B.5.2.1 Class I and Class II PSANEXT calculation procedure B.5.2.2 Class I and Class II PSAACRF calculation procedure |
| 51 | B.6 Test report |
| 52 | Annex C (informative) General information on power sum alien crosstalk performance of installations |
| 53 | Annex D (informative) Baluns D.1 General |
| 54 | Annex E (normative) Requirements for field testing of alien crosstalk E.1 Power sum alien crosstalk E.1.1 Objective E.1.2 Test method E.1.3 Test equipment and set-up E.1.4 Measuring ANEXT loss |
| 55 | E.1.5 Measuring AFEXT loss |
| 56 | E.1.6 Procedure E.1.6.1 Calibration E.1.6.2 Calculation of PS ANEXT and PS AACR-F from measured data E.1.6.3 Significance condition testing E.1.6.4 Length normalization E.1.6.5 Computing the PS ANEXT or PS AFEXT results between a disturbed and disturbing links |
| 58 | E.1.6.6 Applying the correction for the measurement floor E.1.7 Selection of test ports E.1.7.1 Selection of disturbed links |
| 59 | E.1.7.2 Selection of disturbing links E.1.7.2.1 General E.1.7.2.2 Procedure |
| 60 | E.1.8 Test report E.1.9 Uncertainty of PS alien crosstalk measurements |
| 61 | Bibliography |
