Cabled distribution systems for televisionand sound signals –

Part 12:Electromagnetic compatibility of systems

CONTENTS

Page

FOREWORD ...... 3
INTRODUCTION ....5
Clause
1 Scope ........ 6
2 Normative references ... 6
3 Terms, definitions, symbols and abbreviations .................................................................. 7
3.1 Terms and definitions.............................................................................................. 7
3.2 Abbreviations ... 9
4 Methods of measurement ................................................................................................. 9
4.1 Radiation from cable networks .............................................................................. 10
4.2 Immunity of cable networks ................................................................................... 13
5 Performance requirements ............................................................................................. 14
5.1 Radiation from cable networks .............................................................................. 14
5.2 Immunity of cable networks ................................................................................... 15
Annex A (informative) Frequency ranges of typical safety of life services.............................. 17
Annex B (informative) Interdependence between the maximum allowable field strength
and the minimum carrier-to-interference ratio ................................................................. 18
Bibliography ......... 19

NTRODUCTION
Standards of the IEC 60728 series deal with cable networks for television, sound signals and
interactive services including equipment, systems and installations:
–
for headend-reception, processing and distribution of sound and television signals and their
associated data signals, and
–
for processing, interfacing and transmitting all kinds of interactive services using all
applicable transmission media.
They cover all kinds of networks, such as:
–
CATV-networks,
–
MATV- and SMATV-networks,
–
individual receiving networks,
and all kinds of equipment installed in such networks.
The scope of these standards extends from antennas and special signal source inputs to
headend or other interface points, to networks as a whole, up through network outlets, or
terminal inputs, where no network outlet exists.
The standardisation of any user terminals (i.e. tuners, receivers, decoders, multimedia
terminals etc.) as well as of any coaxial and optical cables and accessories is therefore
excluded.
This part of IEC 60728 has been prepared to lay down the measuring methods and
performance requirements and recommendations for electromagnetic compatibility of cabled
distribution networks for television and sound signals