BS EN 60728-1-2:2014
$167.15
Cable networks for television signals, sound signals and interactive services – Performance requirements for signals delivered at the system outlet in operation
| Published By | Publication Date | Number of Pages |
| BSI | 2014 | 42 |
IEC 60728-1-2:2014 provides the minimum performance requirements to be fulfilled in operation at the system outlet or terminal input and describes the summation criteria for the impairments present in the received signals and those produced by the CATV/MATV/SMATV cable network, including individual receiving systems. It is applicable to cable networks intended for television signals, sound signals and interactive services operating between about 5 MHz and 3 000 MHz. The frequency range is extended to 6 000 MHz for home distribution techniques that replace wired cords with a wireless two way communication inside a room (or a small number of adjacent rooms) that uses the 5 GHz to 6 GHz frequency band. This second edition cancels and replaces the first edition published in 2009, and constitutes a technical revision. It includes the following technical: update of performance requirements in Clause 7 to include those for DVB-T2 signals. This publication is to be read in conjunction with /2.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 7 | English CONTENTS |
| 9 | INTRODUCTION |
| 10 | Figures Figure 1 – CATV/MATV/SMATV cable network – Performance requirements |
| 12 | 1 Scope 2 Normative references |
| 13 | 3 Terms, definitions, symbols and abbreviations 3.1 Terms and definitions |
| 17 | Figure 2 – Examples of location of HNI for various home network types |
| 20 | 3.2 Abbreviations |
| 21 | 4 Methods of measurement |
| 22 | 5 Subjective quality of television pictures in relation to the main impairments of the analogue composite television signal 5.1 Subjective quality scale Tables Table 1 – Methods of measurement of IEC 60728-1 applicable in operation |
| 23 | 5.2 Subjective quality and objective parameters Table 2 – Impairment units versus subjective quality |
| 24 | Table 3 – Impairment grade versus un-weighted white noise Table 4 – Impairment grade versus differential gain Table 5 – Impairment grade versus differential phase Table 6 – Impairment grade versus short time linear distortion (2T pulse) Table 7 – Impairment grade versus chrominance-luminance gain inequality |
| 25 | Figure 3 – Signal to echo ratio (dB) versus echo delay (μs) Table 8 – Impairment grade versus chrominance-luminance delay inequality Table 9 – Impairment grade versus echo rating (1 μs echo delay) Table 10 – Correction factors to be applied for delays different from 1 μs |
| 26 | 6 Summation of the impairments 6.1 Impairments to be summed 6.2 Summation laws 6.2.1 General 6.2.2 Voltage addition |
| 27 | 6.2.3 Power addition 6.3 Examples 7 Performance requirements in operation 7.1 General |
| 28 | 7.2 Impedance 7.3 Performance requirements at the terminal input 7.3.1 Definition 7.3.2 Signal level 7.3.3 Other parameters 7.4 Performance requirements at system outlets 7.4.1 Minimum and maximum carrier levels |
| 29 | 7.4.2 Mutual isolation between system outlets 7.4.3 Isolation between individual outlets in one household 7.4.4 Isolation between forward and return path 7.4.5 Long-term frequency stability of distributed carrier signals at any system outlet 7.4.6 Carrier level differences at system outlet 7.4.7 Frequency response within a television channel 7.4.8 Random noise at system outlet |
| 30 | Table 11 – Carrier-to-noise ratios at system outlet (analogue television) in operation Table 12 – RF signal-to-noise ratios at system outlet (digital television) in operation |
| 32 | 7.4.9 Interference to television channels Table 13 – Carrier-to-noise ratios at system outlet (sound radio) in operation |
| 34 | Annex A (normative) RF carrier to noise ratio A.1 AM-VSB modulated signals A.1.1 General A.1.2 Definition A.1.3 TV receiver IF filtering process A.1.4 Equivalent noise bandwidth Figure A.1 – Example of a TV receiver IF filter (systems B and G) |
| 35 | A.1.5 AM demodulation process Figure A.2 – Example of a demodulated TV signal (systems B and G) |
| 36 | A.2 FM modulated signals |
| 37 | Annex B (informative) Examples of summation of impairments B.1 Voltage addition B.2 Power addition Table B.1 – Examples of voltage addition |
| 38 | Table B.2 – Examples of power addition |
| 39 | Bibliography |
