BS EN IEC 60728-3:2018 – TC:2020 Edition
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Tracked Changes. Cable networks for television signals, sound signals and interactive services – Active wideband equipment for cable networks (TA 5)
| Published By | Publication Date | Number of Pages |
| BSI | 2020 | 151 |
IEC 60728-3:2017 is also available as /2 which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition. IEC 60728-3:2017 specifies the measuring methods, performance requirements and data publication requirements for active wideband equipment of cable networks for television signals, sound signals and interactive services. This fifth edition cancels and replaces the fourth edition published in 2010. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) extension of upper frequency range limit for cable network equipment in the forward path from 1000 MHz to 1218 MHz (optional up to 1794 MHz); b) extension of upper frequency range limit for cable network equipment in the return path from 85 MHz to 204 MHz; c) integration and update of IEC 60728-3-1 content; d) integration and update of the Technical Specification CLC/TS 50083-3-3 content; e) deletion of specifications and test methods for obsolete analogue parameters; f) additional normative references; g) additional terms and definitions and abbreviations.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 95 | undefined |
| 100 | CONTENTS |
| 103 | FOREWORD |
| 105 | INTRODUCTION |
| 106 | 1 Scope 2 Normative references |
| 107 | 3 Terms, definitions, symbols and abbreviated terms 3.1 Terms and definitions |
| 110 | 3.2 Symbols |
| 112 | 3.3 Abbreviated terms 4 Methods of measurement 4.1 General |
| 113 | 4.2 Linear distortion 4.2.1 Return loss 4.2.2 Group delay variation |
| 114 | 4.3 Non-linear distortion 4.3.1 General 4.3.2 Types of measurements |
| 115 | 4.3.3 Intermodulation |
| 116 | Figures Figure 1 – Basic arrangement of test equipment for evaluation of the ratio of signal to intermodulation product |
| 117 | 4.3.4 Composite triple beat |
| 119 | Figure 2 – Connection of test equipment for the measurement of non-linear distortion by composite beat |
| 120 | 4.3.5 Composite second order beat 4.3.6 Method of measurement of non-linearity for pure digital channel load |
| 122 | Figure 3 – BER measurement test configuration |
| 124 | Tables Table 1 – Measurement parameters for full channel load |
| 126 | Figure 4 – CINR measurement test setup |
| 127 | Figure 5 – Plot of CINR in dB curve (forward path) versus EUT channel output signal level in dB(V |
| 128 | 4.3.7 Hum modulation of carrier Figure 6 – Carrier/hum ratio |
| 129 | Figure 7 – Test set-up for local-powered objects Figure 8 – Test set-up for remote-powered objects |
| 130 | Figure 9 – Oscilloscope display |
| 131 | 4.4 Noise figure 4.4.1 General 4.4.2 Equipment required 4.4.3 Connection of equipment Figure 10 – Measurement of noise figure |
| 132 | 4.4.4 Measurement procedure 4.5 Crosstalk attenuation 4.5.1 Crosstalk attenuation for loop-through ports 4.5.2 Crosstalk attenuation for output ports |
| 134 | 4.6 Measurement of noise power ratio (NPR) 4.6.1 General Figure 11 – Measurement of crosstalk attenuation for loop through ports of multi-switches |
| 135 | 4.6.2 Equipment required 4.6.3 Connection of equipment Figure 12 – Characteristic of the noise filter Figure 13 – Test setup for the non-linearity measurement Table 2 – Notch filter frequencies |
| 136 | 4.6.4 Measurement procedure 4.6.5 Presentation of the results |
| 137 | 4.7 Immunity to surge voltages 4.7.1 General 4.7.2 Equipment required 4.7.3 Connection of equipment Figure 14 – Presentation of the result of NPR |
| 138 | 4.7.4 Measurement procedure 5 Equipment requirements 5.1 General requirements 5.2 Safety 5.3 Electromagnetic compatibility (EMC) 5.4 Frequency range 5.5 Impedance and return loss Figure 15 – Measurement set-up for surge immunity test |
| 139 | 5.6 Gain 5.6.1 Minimum and maximum gain 5.6.2 Gain control 5.6.3 Slope and slope control 5.7 Flatness 5.8 Test points 5.9 Noise figure Table 3 – Example of return loss requirements |
| 140 | 5.10 Non-linear distortion 5.10.1 General 5.10.2 Second-order distortion 5.10.3 Third order distortion 5.10.4 Composite triple beat 5.10.5 Composite second order 5.10.6 Maximum operating level for pure digital channel load |
| 141 | 5.11 Hum modulation 5.12 Power supply 5.13 Environmental 5.13.1 General 5.13.2 Transportation 5.13.3 Installation or maintenance 5.13.4 Operation |
| 142 | 5.13.5 Energy efficiency of equipment 5.14 Marking 5.14.1 Marking of equipment 5.14.2 Marking of ports 5.15 Requirements for multi-switches 5.15.1 Control signals for multi-switches 5.15.2 Amplitude frequency response flatness 5.15.3 Return loss 5.15.4 Through loss 5.15.5 Isolation 5.15.6 Crosstalk attenuation |
| 143 | 5.15.7 Satellite IF to terrestrial signal isolation 5.16 Immunity to surge voltages 5.16.1 Degrees of testing levels 5.16.2 Recommendation of testing level degree Table 4 – Parameters of surge voltages for different degrees of testing levels Table 5 – Recommendations for degree of testing levels |
| 144 | Annexes Annex A (normative) Test carriers, levels and intermodulation products A.1 Two signal tests for second- and third-order products A.1.1 Intermodulation products with test signals at frequencies ƒa and ƒb, see Table A.1 A.1.2 Signal levels Figure A.1 – An example showing products formed when 2ƒa > ƒb Table A.1 – Intermodulation products with two signals |
| 145 | A.2 Three signal tests for third order products – Intermodulation products with test signals at frequencies ƒa, ƒb and ƒc , see Table A.2 and Figure A.3 Figure A.2 – An example showing products formed when 2ƒa < ƒb Figure A.3 – Products of the form ƒa ± ƒb ± ƒc Table A.2 – Intermodulation products with three signals |
| 146 | Annex B (informative) Test frequency plan for composite triple beat (CTB), composite second order (CSO) Table B.1 – Frequency allocation plan |
| 148 | Annex C (informative) Measurement errors that occur due to mismatched equipment Figure C.1 – Error concerning return loss measurement Figure C.2 – Maximum ripple |
| 149 | Annex D (informative) Examples of measurement channels D.1 Operating frequency range 110 MHz to 1 006 MHz D.2 Operating frequency range 110 MHz to 862 MHz D.3 Operating frequency range 258 MHz to 1 218 MHz |
| 150 | Bibliography |
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