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BSI 22/30456108 DC:2022 Edition

BSI 22/30456108 DC:2022 Edition

$13.70

BS EN 61935-4 Ed.1.0 SPECIFICATION FOR THE TESTING OF BALANCED AND COAXIAL INFORMATION TECHNOLOGY CABLING – Part 4. Installed balanced single pair cabling as specified in ISO/IEC 1801-1 and related standards

Published By Publication Date Number of Pages
BSI 2022 70
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PDF Pages PDF Title
8 FOREWORD
10 INTRODUCTION
11 1. Scope
2. Normative references
13 3. Terms, definitions and abbreviations
3.1 Acronyms
14 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
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
16 4.2.7 Coaxial cables and test leads for network analysers
4.2.8 Balanced test leads
4.2.9 Balun requirements
19 4.2.10 Balunless
4.2.11 Network analyser measurement precautions
4.2.12 Data reporting and accuracy
4.2.13 Frequency step size
4.3 DC loop resistance
20 4.4 Direct current (DC) resistance unbalance
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
21 4.6.2 Uncertainty
4.7 Propagation delay
4.7.1 Objective
4.7.2 Test method
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
22 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
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)
23 4.12.1 Objective
4.12.2 Test method
4.12.3 Test equipment and set-up
25 4.12.4 Procedure
4.12.4.1 Calibration
4.12.4.2 Measurement
4.12.4.3 Calculation
26 4.12.4.4 Test report
4.12.4.5 Uncertainty
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
28 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
30 4.13.4.4 Test report
4.13.4.5 Uncertainty
4.14 Unbalance attenuation, near end
4.14.1 Uncertainty
4.15 Unbalance attenuation, far end
31 4.15.1 Uncertainty
4.16 Coupling attenuation
5. Field test measurement requirements for electrical properties
5.1 Introductory remark
32 5.2 Cabling configurations tested
5.3 Field test parameters
5.3.1 General
5.3.2 Optional field test parameters
5.3.3 Inspection of workmanship and connectivity testing
5.3.3.1 Visual inspection
33 5.3.3.2 Wire map
34 5.3.4 Propagation delay
5.3.5 Length
35 5.3.6 Insertion loss
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
36 5.4.1 General
5.4.2 Detailed results
5.4.3 Summary results
37 5.4.4 Reporting requirements for power sum alien crosstalk
38 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
39 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
42 6.2 Measurement accuracy specifications common to level SP-I, SP-II, and level SP-III field testers
6.3 Accuracy performance requirements for Level SP-I field testers
44 6.4 Accuracy performance requirements for level SP-II field testers
47 6.5 Accuracy performance requirements for level SP-III field testers
50 6.6 Field tester requirements applicable to alien crosstalk measurements
6.7 No content
6.8 No content
6.9 No content
6.10 Procedures for determining field tester parameters
51 6.11 Measurement error models
6.12 Network analyser measurement comparisons
52 Annex A (informative) Uncertainty and variability of field test results
A.1 General
A.2 Marginal results reporting
A.3 Nominal accuracy
53 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
54 A.6.2 Manipulating cords of link adapter
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
55 A.6.7 Guidelines for correct installation testing
56 Annex B (informative) Reference laboratory test configuration for alien crosstalk testing
B.1 General
B.2 Test parameters
B.3 Link and channel construction
57 B.4 Determination of number of disturbing links or channels
58 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
59 B.6 Test report
60 Annex C (informative) General information on power sum alien crosstalk performance of installations
61 Annex D (informative) Baluns
D.1 General
62 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
63 E.1.4 Measuring ANEXT loss
E.1.5 Measuring AFEXT loss
64 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
65 E.1.6.5 Computing the PS ANEXT or PS AFEXT results between a disturbed and disturbing links
66 E.1.6.6 Applying the correction for the measurement floor
67 E.1.7 Selection of test ports
E.1.7.1 Selection of disturbed links
E.1.7.2 Selection of disturbing links
E.1.7.2.1 General
68 E.1.7.2.2 Procedure
69 E.1.8 Test report
E.1.9 Uncertainty of PS alien crosstalk measurements
70 Bibliography

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BSI 22/30456108 DC
$13.70