BS EN 60728-6:2011
$198.66
Cable networks for television signals, sound signals and interactive services – Optical equipment
| Published By | Publication Date | Number of Pages |
| BSI | 2011 | 68 |
IEC 60728-6:2011(E) lays down the measuring methods, performance requirements and data publication requirements of optical equipment of cable networks for television signals, sound signals and interactive services. This third edition cancels and replaces the second edition published in 2003 of which it constitutes a technical revision. It includes the following significant technical changes with respect to the previous edition: – The normative references were updated. – The methods of measurement for optical power and return loss were substituted by references to other standards. – The method of measurement for polarization dependent loss was deleted. – A method of measurement for carrier-to-crosstalk ratio (CCR) was added. – The methods of measurement for CSO and CTB of optical amplifiers were substituted by a method of measurement for microscopic gain tilt of optical amplifiers. This parameter can be used for calculating the second order distortion of optical amplifiers according to the method described in the new Annex B. New classes for optical transmitters and receivers have been defined.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 9 | CONTENTS |
| 13 | INTRODUCTION |
| 14 | 1 Scope 2 Normative references |
| 16 | 3 Terms, definitions, symbols and abbreviations 3.1 Terms and definitions |
| 22 | Figures Figure 1 – Tilt and microscopic gain tilt of optical amplifiers |
| 23 | 3.2 Symbols |
| 24 | 3.3 Abbreviations |
| 25 | 4 Methods of measurement 4.1 Measurement requirements |
| 26 | 4.2 Optical power 4.3 Loss, isolation, directivity and coupling ratio Figure 2 – Measurement of optical loss, directivity and isolation |
| 27 | 4.4 Return loss 4.5 Saturation output power of an optical amplifier 4.6 Centroidal wavelength and spectral width under modulation Figure 3 – Optical saturation output power |
| 28 | 4.7 Linewidth and chirping of transmitters with single mode lasers |
| 29 | Figure 4 – Measurement of the chirping and the linewidth of transmitters |
| 30 | 4.8 Optical modulation index |
| 31 | 4.9 Reference output level of an optical receiver Figure 5 – Measurement of the optical modulation index |
| 32 | Figure 6 – Measurement of the reference output level of an optical receiver |
| 33 | 4.10 Slope and flatness Figure 7 – Measurement of the slope and flatness |
| 34 | 4.11 Composite second order distortion (CSO) of optical transmitters Figure 8 – Evaluation of the slope Figure 9 – Evaluating the flatness |
| 35 | 4.12 Composite triple beats (CTB) of optical transmitters Figure 10 – Device under test for measuring CSO of optical transmitters |
| 36 | 4.13 Composite crossmodulation of optical transmitters Figure 11 – Device under test for measuring CTB of optical transmitters |
| 38 | Figure 12 – Arrangement for measuring composite crossmodulationof optical transmitters |
| 39 | 4.14 Receiver intermodulation |
| 40 | Figure 13 – Arrangement of test equipment for measuring receiver intermodulation |
| 41 | 4.15 Microscopic gain tilt of optical amplifiers |
| 42 | Figure 14 – Arrangement of test equipment for measuring microscopic gain tilt |
| 43 | 4.16 Noise parameters of optical transmitters and optical receivers Figure 15 – System with internal noise sources |
| 44 | Figure 16 – PIN diode receiver |
| 45 | Figure 17 – Optical transmission system under test Figure 18 – Arrangement of test equipment for carrier-to-noise measurement |
| 46 | Tables Table 1 – Noise correction factors Cn for different noise level differences D |
| 48 | 4.17 Method for combined measurement of relative intensity noise (RIN), optical modulation index and equivalent input noise current |
| 49 | Figure 19 – Measurement set-up for determination of the noise parameters and the optical modulation index |
| 50 | 4.18 Noise figure of optical amplifiers 4.19 Influence of fibre |
| 51 | 4.20 SBS threshold Figure 20 – Arrangement for measuring the SBS threshold |
| 52 | 4.21 Carrier-to-crosstalk ratio (CCR) Figure 21 – Arrangement for measuring the CCR |
| 53 | 5 Universal performance requirements and recommendations 5.1 Safety 5.2 Electromagnetic compatibility (EMC) 5.3 Environmental |
| 54 | 5.4 Marking 6 Active equipment 6.1 Optical forward path transmitters |
| 55 | Table 2 – Classes of optical forward path transmitters Table 3 – Data publication requirements for optical forward path transmitters |
| 56 | Table 4 – Recommendations for optical forward path transmitters |
| 57 | Table 5 – Requirements for optical forward path transmitters |
| 58 | 6.2 Optical return path transmitters Figure 22 – Classification of return path transmitters Table 6 – Data publication requirements for optical return path transmitters Table 7 – Recommendations for optical return path transmitters |
| 59 | 6.3 Optical receivers Table 8 – Requirements for optical return path transmitters Table 9 – Classification of optical receivers |
| 60 | Table 10 – Data publication requirements for optical receivers Table 11 – Recommendations for optical receivers |
| 61 | 6.4 Optical amplifiers Table 12 – Performance requirements for optical receivers Table 13 – Classification of optical amplifiers |
| 62 | 7 Connectors and splices Table 14 – Performance requirements for optical amplifiers |
| 63 | Annex A (normative) Product specification worksheet for optical amplifiers Table A.1 – Parameters of optical amplifiers |
| 64 | Annex B (informative) Calculation of second-order distortion caused by microscopic gain tilt of optical amplifiers |
| 65 | Bibliography |
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