BSI PD IEC/TR 61282-14:2016
$167.15
Fibre optic communication system design guides – Determination of the uncertainties of attenuation measurements in fibre plants
| Published By | Publication Date | Number of Pages |
| BSI | 2016 | 44 |
This part of IEC 61282, which is a Technical Report, establishes the detailed analysis and calculation of the uncertainties related to the measurement of the attenuation of both multimode and single mode optical fibre cabling using optical light sources and power meters.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 4 | CONTENTS |
| 7 | FOREWORD |
| 9 | INTRODUCTION |
| 10 | 1 Scope 2 Normative references 3 Terms, definitions and abbreviations 3.1 Terms and definitions |
| 12 | 3.2 Abbreviations 4 Overview of uncertainty 4.1 What is uncertainty? 4.2 Origin of uncertainties 4.3 What may not be considered as uncertainty? |
| 13 | 5 Fibre cabling attenuation measurement 5.1 Measurement methods 5.2 Sources of uncertainty to be considered 5.2.1 Analysis Tables TableĀ 1 ā Source of uncertainty (raw list) |
| 15 | Figures FigureĀ 1 ā Fish bone analysis |
| 16 | 5.2.2 Uncertainties due to the environment 5.2.3 Uncertainties due to operator skills 5.2.4 Uncertainties due to measurement methods 5.2.5 Uncertainties due to measuring instruments |
| 17 | TableĀ 2 ā Uncertainties due to measuring instruments |
| 18 | 5.2.6 Uncertainties due to the setup 5.2.7 Uncertainties due to cabling TableĀ 3 ā Uncertainties due to the setup TableĀ 4 ā Uncertainties due to cabling |
| 19 | 6 Uncertainties estimation 6.1 Measurement model FigureĀ 2 ā Measurement model |
| 20 | 6.2 Accumulation of uncertainties |
| 21 | 7 General representation of the equation using sensitivity coefficients |
| 22 | TableĀ 5 ā Sensitivity coefficients for IECĀ 61280-4-1 and IECĀ 61280-4-2 methods |
| 23 | TableĀ 6 ā Sensitivity coefficients for ISO/IEC 14763-3:2014 methods |
| 24 | 8 Calculation 8.1 Combined standard uncertainty 8.2 Expanded uncertainty 8.3 Determination of the coverage factor k 8.3.1 General approach 8.3.2 Discussion |
| 25 | 8.3.3 Typical values of degree of freedom Table 7 ā Values of k95 for different values of v Table 8 ā Typical values of vi |
| 26 | Annexes Annex A (normative) Mathematical basis A.1 General A.2 Type A evaluation of uncertainty A.3 Type B evaluation of uncertainty |
| 27 | A.4 Determining the combined standard uncertainty |
| 28 | A.5 Reporting |
| 29 | Annex B (informative) Measurement methods B.1 Measurement methods as per IEC 61280-4-1 and 61280-4-2 B.1.1 General B.1.2 Measurement configuration B.1.3 One-cord reference configuration FigureĀ B.1 ā Measurement configuration FigureĀ B.2 ā One-cord reference measurement |
| 30 | B.1.4 Two-cord reference configuration B.1.5 Three-cord reference configuration B.2 Measurement methods as per ISO/IEC 14763-3:2014 B.2.1 General FigureĀ B.3 ā Two-cord reference measurement FigureĀ B.4 ā Three-cord reference measurement |
| 31 | B.2.2 Channels FigureĀ B.5 ā Measurement on channel FigureĀ B.6 ā Channel reference measurement |
| 32 | B.2.3 Links FigureĀ B.7 ā Link measurement configuration FigureĀ B.8 ā Link reference measurement |
| 33 | Annex C (normative) Uncertainties evaluation C.1 Type A uncertainties C.1.1 General C.1.2 Evaluation of optical source instability and associated uncertainties C.2 Type B uncertainties C.2.1 General C.2.2 Evaluation of the power meter noise |
| 34 | C.2.3 Elements to be considered for power meter stability analysis C.2.4 Evaluation of the centre wavelength dependence |
| 35 | FigureĀ C.1 ā Typical spectral response of a fibre TableĀ C.1 ā Spectral attenuation coefficients TableĀ C.2 ā Sensitivity coefficients |
| 36 | C.2.5 Spectral width dependence C.2.6 Evaluation of the uncertainties due to MM launch conditions |
| 37 | C.2.7 Evaluation of the PDL FigureĀ C.2 ā Uncertainties due to the launch conditions for a given loss |
| 38 | C.2.8 Uncertainty of absolute power measurement |
| 39 | Annex D (normative) Typical values of uncertainties TableĀ D.1 ā Typical values of uncertainties |
| 40 | Annex E (informative) Linear to dB scale conversion of uncertainties E.1 Definition of decibel E.2 Conversion of relative uncertainties |
| 41 | Bibliography |
