EN 50083-8:2002

SLOVENSKI STANDARD
01-december-2003
Cable networks for television signals, sound signals and interactive services - Part
8: Electromagnetic compatibility for networks
Cable networks for television signals, sound signals and interactive services -- Part 8:
Electromagnetic compatibility for networks
Kabelnetze für Fernsehsignale, Tonsignale und interaktive Dienste -- Teil 8:
Elektromagnetische Verträglichkeit von Kabelnetzen
Réseaux de distribution par câbles pour signaux de télévision, signaux de radiodiffusion
sonore et services interactifs -- Partie 8: Compatibilité électromagnétique des réseaux
Ta slovenski standard je istoveten z: EN 50083-8:2002
ICS:
33.060.40 Kabelski razdelilni sistemi Cabled distribution systems
33.100.01 Elektromagnetna združljivost Electromagnetic compatibility
na splošno in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 50083-8
NORME EUROPÉENNE
EUROPÄISCHE NORM May 2002
ICS 29.020; 33.060.40 Supersedes EN 50083-8:2000
English version
Cable networks for television signals, sound signals
and interactive services
Part 8: Electromagnetic compatibility for networks
Réseaux de distribution par câbles Kabelnetze für Fernsehsignale,
pour signaux de télévision, signaux de Tonsignale und interaktive Dienste
radiodiffusion sonore et services Teil 8: Elektromagnetische Verträglichkeit
interactifs von Kabelnetzen
Partie 8: Compatibilité électromagnétique
des réseaux
This European Standard was approved by CENELEC on 2001-12-01. CENELEC members are bound to
comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the Central Secretariat or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CENELEC member into its own language and
notified to the Central Secretariat has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic,
Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands,
Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels
© 2002 CENELEC -All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 50083-8:2002 E
Foreword
This European Standard was prepared by CENELEC Technical Committee TC 209, "Cable networks for
television signals, sound signals and interactive services" on the basis of EN 50083-8:2000 and the first
amendment to EN 50083-8.
The text of this first amendment was submitted to the Unique Acceptance Procedure and was approved
by CENELEC on 2001-12-01 to be published as part of a second edition of EN 50083-8.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2002-12-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2004-12-01
__________
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Content
Page
1 Scope . 4
1.1 General. 4
1.2 Specific scope of this part 8. 4
2 Normative references. 5
3 Terms, definitions, symbols and abbreviations. 6
3.1 Terms and definitions. 6
3.2 Symbols. 8
3.3 Abbreviations . 8
4 Methods of measurement. 9
4.1 Radiation from cable networks. 9
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
Annexes
Annex A (informative) A-deviations. 17
Annex B (informative) Frequency ranges of typical safety of life services. 26
Annex C (informative) Interdependence between the maximum allowable field
strength and the minimum carrier-to-interference ratio . 27

1 Scope
1.1 General
Standards of EN 50083 series deal with cable networks for television signals, 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 signals for interactive services
using all applicable transmission media.
All kinds of networks like
� CATV-networks
� MATV- and SMATV-networks
� individual receiving networks
and all kinds of equipment, systems and installations installed in such networks, are within this scope
The extent of this standardisation work is from the antennas, special signal source inputs to the headend
or other interface points to the network up to the system outlet or the terminal input, where no system
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 therefor is excluded.
1.2 Specific scope of this part 8
This standard 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 3,0 GHz.
This standard specifies EMC performance requirements and lays down the methods of measurement.
Cable networks beyond the system outlets (e.g. the receiver lead, in simplest terms) which begin at the
system outlet and end at the subscriber's terminal equipment shall comply with these recommendations
provided that no other specific provisions apply.
Requirements for the electromagnetic compatibility of receiver leads are laid down in EN 60966�2�4,
EN 60966�2�5 and EN 60966�2�6.
To minimise the risk of interference to other radio services caused by possible radiation from a cable
network and to limit the possible penetration of external signals which may interfere with the operation of
a network, it is necessary not only to use equipment which satisfies the requirements of EN 50083-2
regarding limits of radiation and of immunity to external fields but also to ensure the integrity of all cable
connections on each item of active or passive cable network equipment.
Cable networks employing coaxial cables can be a source of interference to a wide range of services that
utilise the radio frequency spectrum. These include not only the emergency services, safety of life,
broadcasting, aeronautical and radio navigation services but also land mobile, amateur and cellular radio
services.
- 5 - EN 50083-8:2002
As existing and planned radio services need to be protected, radiation limits specified for cable networks
should complied with.
Additional protection for certain services may be required by national regulations.
2 Normative references
This European Standard incorporates, by dated or undated reference, provisions from other publications.
These normative references are cited at the appropriate places in the text and the publications are listed
hereafter. For dated references, subsequent amendments to or revisions of any of these publications
apply to this European Standard only when incorporated in it by amendment or revision. For undated
references the latest edition of the publication referred to applies (including amendments).
EN 50083 Cable networks for television signals, sound signals and interactive
services
EN 50083-2 2001 Part 2: Electromagnetic compatibility for equipment
EN 50083-3 2002 Part 3: Active wideband equipment for coaxial cable networks
EN 50083-4 1998 Part 4: Passive wideband equipment for coaxial cable networks
EN 50083-5 2000 Part 5: Headend equipment (to be published)
EN 50083-6 1997 Part 6: Optical equipment
EN 50083-7 1996 Part 7: System performance
+ A1 2000
EN 50117 Series Coaxial cables used in cable networks
EN 60966�2�4 1997 Radio frequency and coaxial cable assemblies - Part 2�4: Detail
specification for cable assemblies for radio and TV receivers -
Frequency range 0 to 3 000 MHz, IEC 60169�2 connectors
EN 60966�2�5 1998 Radio frequency and coaxial cable assemblies - Part 2�5: Detail
specification for cable assemblies for radio and TV receivers -
Frequency range 0 to 1 000 MHz, IEC 60169�2 connectors
EN 60966�2�6 1998 Radio frequency and coaxial cable assemblies - Part 2�6: : Detail
specification for cable assemblies for radio and TV receivers -
Frequency range 0 to 3 000 MHz, IEC 60169�24 connectors
IEC 60050(161) International Electrotechnical Vocabulary
Chapter 161: Electromagnetic compatibility.
CISPR 16�1 1993 Specification for radio disturbance and immunity measuring apparatus
and methods - Part 1: Radio disturbance and immunity measuring
apparatus
3 Terms, definitions, symbols and abbreviations
3.1 Terms and definitions
For the purposes of this standard, the definitions contained in IEC 60050(161) "Electromagnetic
compatibility" apply. The most important definitions of IEC 60050(161) are repeated hereafter with the
IEV-numbering given in brackets. In addition some more specific definitions, used in this standard, are
listed.
3.1.1
(electromagnetic) radiation [IEV 161-01-10]
1. phenomenon by which energy in the form of electromagnetic waves emanates from a source into
space
2. energy transferred through space in the form of electromagnetic waves
NOTE  By extension, the term "electromagnetic radiation" sometimes also covers induction phenomena.
3.1.2
immunity (to a disturbance) [IEV 161-01-20]
ability of a device, equipment or system to perform without degradation in the presence of an
electromagnetic disturbance
3.1.3
electromagnetic disturbance [IEV 161-01-05]
any electromagnetic phenomenon which may degrade the performance of a device, equipment or
system, or adversely affect living or inert matter
NOTE  An electromagnetic disturbance may be an electromagnetic noise, an unwanted signal or a change in the
propagation medium itself.
3.1.4
screening effectiveness
ability of an equipment or system to attenuate the influence of electromagnetic fields from outside the
equipment or system or to suppress the radiation of electromagnetic fields from inside the equipment or
system
3.1.5
well-screened
A test set-up can be considered "well-screened" if its radiation level, when terminated with a matched
load, is at least 20 dB below the expected radiation level of the equipment under test, the test set-up and
the equipment being supplied with the same input signal level.
3.1.6
electromagnetic interference EMI (abbreviation) [IEV 161-01-06]
degradation of the performance of an equipment, transmission channel or system caused by an
electromagnetic disturbance
3.1.7
operating frequency range
passband for the wanted signals for which the equipment has been designed

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3.1.8
carrier-to-interference ratio
minimum level difference measured at the output of an active equipment or at any other interface within
the network between the wanted signal and
� intermodulation products of the wanted signal and/or unwanted signals generated due to non-
linearities;
� harmonics generated by an unwanted signal;
� unwanted signals that have penetrated into the operating frequency range;
� unwanted signals that have been converted to the frequency range to be protected (operating
frequency range)
3.1.9
headend
equipment which is connected between receiving antennas or other signal sources and the remainder of
the cable network, to process the signals to be distributed
NOTE  The headend may, for example, comprise antenna amplifiers, frequency converters, combiners, separators
and generators.
3.1.10
system outlet
device for interconnecting a subscriber feeder and a receiver lead
3.1.11
spur network
cable network normally laid out inside buildings to which splitters, subscriber taps or looped system
outlets are connected
3.1.12
ignition noise
unwanted emission of electromagnetic energy, predominantly impulsive in content, arising from the
ignition system within a vehicle or device
3.1.13
building penetration loss
ability of buildings, in which networks for distribution of television and sound are located, to attenuate the
influence of electromagnetic fields from outside the buildings or to suppress the radiation of
electromagnetic f
...