BS IEC 60728-12:2017
$167.15
Cable networks for television signals, sound signals and interactive services – Electromagnetic compatibility of systems
| Published By | Publication Date | Number of Pages |
| BSI | 2017 | 34 |
This part of IEC 60728 applies to the radiation characteristics and immunity to electromagnetic disturbance of cable networks for television signals, sound signals and interactive services and covers the frequency range 0,15 MHz to 3,5 GHz.
NOTE 1 Measurements below 30 MHz are not generally considered useful in the context of cable networks and are difficult to perform in practice.
This document specifies methods of measurement and EMC performance requirements under operating conditions (in situ) to ensure the ongoing EMC integrity of cable networks.
Cable networks beyond the system outlets (e.g. the receiver lead, in simplest terms) that begin at the system outlet and end at the input to the subscriber’s terminal equipment are not covered by this document. Requirements for the electromagnetic compatibility of receiver leads are specified in IEC 60966-2-4, IEC 60966-2-5 and IEC 60966-2-6.
Cable networks and a wide range of radio services have to coexist. These include, for example, the emergency services, safety of life, broadcasting, aeronautical, radio navigation services and also land, mobile, amateur and cellular radio services. Frequency ranges of typical safety of life services are listed in Annex B. Additional protection for certain services may be required by national regulations. Annex A gives information on legal requirements in certain countries.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | National foreword |
| 6 | CONTENTS |
| 8 | FOREWORD |
| 10 | INTRODUCTION |
| 11 | 1 Scope 2 Normative references |
| 12 | 3 Terms, definitions, symbols and abbreviated terms 3.1 Terms and definitions |
| 14 | 3.2 Abbreviated terms |
| 15 | 4 Methods of measurement 4.1 Basic principles 4.2 Radiation from cable networks 4.2.1 General 4.2.2 Field strength method |
| 17 | 4.2.3 Subcarrier measurement procedure 4.2.4 GPS based leakage detection system |
| 18 | 4.3 Immunity of cable networks 4.3.1 General 4.3.2 Measurement procedure for interference caused by high-power local outdoor transmitter 5 Performance requirements 5.1 General conditions |
| 19 | 5.2 Radiation from cable networks and other sources 5.2.1 General 5.2.2 Measurement of the total radiation 5.2.3 Measurement of narrowband radiation Tables Table 1 – Limits of total radiation Table 2 – Narrowband radiation limits |
| 20 | 5.3 Immunity of cable networks Table 3 – Maximum expected field strength Table 4 – Required carrier-to-interference ratio |
| 21 | Annex A (informative)Information on legal requirements in some countries A.1 Legislation in Germany A.2 Requirements in Germany |
| 22 | Table A.1 – Protection of particular frequency rangesaccording to § 3 of the Order |
| 23 | A.3 Reference for legislation in Germany Table A.2 – Field strength limit values at a 3 m distance from line-bound telecommunications facilities and networks |
| 24 | Annex B (informative)Frequency ranges of typical safety of life services Table B.1 – Frequency ranges of typical safety of life services |
| 25 | Annex C (informative)Interdependence between the maximum allowable field strength and the minimum signal level at system outlet |
| 27 | Annex D (normative)Measurements at other distances than the standard distance of 3 m D.1 Measurement at a reduced distance below 3 m D.2 Measurement at measurement distances above 3 m |
| 28 | Annex E (informative)GPS based leakage detection system for cable networks E.1 General E.2 Automated data collection by driving through the HFC network E.3 Tagging of the signal E.4 Post-processing the collected data and visualization of leakages E.5 On-site location of the leak |
| 29 | Bibliography |
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IEC 60728-12:2017
Cable networks for television signals, sound signals and interactive services – Part 12: Electromagnetic compatibility…
