SIST EN 50083-2:2003
(Main)Cable networks for television signals, sound signals and interactive services -- Part 2: Electromagnetic compatibility for equipment
Cable networks for television signals, sound signals and interactive services -- Part 2: Electromagnetic compatibility for equipment
This standard • applies to the radiation characteristics and immunity to electromagnetic disturbance of EM active equipment (active and passive equipment) for the reception, processing and distribution of television, sound and interactive multimedia signals as dealt with in the following parts of EN 50083 series: - EN 50083-3 "Active wideband equipment for coaxial cable networks" - EN 50083-4 "Passive wideband equipment for coaxial cable networks" - EN 50083-5 "Headend equipment" - EN 50083-6 "Optical equipment" • covers the following frequency ranges: Disturbance voltage injected into the mains 9 kHz to 30 MHz Radiation from active equipment 5 MHz to 25 GHz Immunity of active equipment 150 kHz to 25 GHz Screening effectiveness of passive equipment 5 MHz to 3 GHz (25 GHz) • specifies requirements for maximum allowed radiation, minimum immunity and minimum screening effectiveness; • describes test methods for conformance testing. Due to the fact that cable networks, the former cabled distribution systems for television and sound signals, are more and more used for interactive services, these networks may incorporate also equipment which carry besides the cable network equipment ports also one or more telecom signal port(s). This equipment shall be named as "multimedia network equipment". Coaxial cables for cable networks do not fall under the scope of this standard. Reference is made to the European Standard series EN 50117 "Coaxial cables used in cabled distribution networks". Standardisation in the field of „Electromagnetic compatibility“ for any user terminals (e.g. tuners, receivers, decoders, multimedia terminals etc.) is covered by the European Standards EN 55013 and EN 55020. 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.
Kabelnetze für Fernsehsignale, Tonsignale und interaktive Dienste -- Teil 2: Elektromagnetische Verträglichkeit von Geräten
Diese Norm ─ gilt für die Störstrahlungscharakteristik und für die elektromagnetische Störfestigkeit von EM-aktiven Geräten (aktive und passive Geräte) für den Empfang, die Aufbereitung und Verteilung von Fernseh-, Ton- und interaktiven Multimediasignalen, wie in den folgenden Teilen der Normenreihe EN 50083 behandelt:: - EN 50083 3 "Aktive Breitbandgeräte für koaxiale Verteilnetze" - EN 50083 4 "Passive Breitbandgeräte für koaxiale Verteilnetze" - EN 50083 5 "Kopfstellen" - EN 50083 6 "Optische Geräte" ─ deckt die folgenden Frequenzbereiche ab: Netzstörspannung 9 kHz bis 30 MHz Strahlung aktiver Geräte 5 MHz bis 25 GHz Störfestigkeit aktiver Geräte 150 kHz bis 25 GHz Schirmungsmaß der passiven Geräte 5 MHz bis 3 GHz (25 GHz) ─ legt die Anforderungen für die erlaubte Höchst-Strahlung, die Mindest-Störfestigkeit und das Mindest-Schirmungsmaß fest; ─ beschreibt die Prüfverfahren der Prüfungen auf Normeneinhaltung. Koaxialkabel für Kabelverteilanlagen fallen nicht in den Anwendungsbereich dieser Norm. Hierfür gelten die Europäischen Normen der Reihe EN 50117 „Koaxialkabel für Kabelverteilanlagen“. Die Normung im Bereich „Elektromagnetische Verträglichkeit“ für jede Art von Rundfunk-Endgeräten (z. B. Tuner, Empfänger, Decoder usw.) ist durch die Europäischen Normen EN 55013 und EN 55020 abgedeckt und für Multimedia-Endgeräte durch die EN 55022 und EN 55024. Anforderungen an die elektromagnetische Verträglichkeit von Empfängeranschlüssen sind beschrieben in EN 60966-2-4, EN 60966-2-5 und EN 60966-2-6.
Réseaux de distribution par câbles pour signaux de télévision, signaux de radiodiffusion sonore et services interactifs -- Partie 2: Compatibilité électromagnétique pour les matériels
Cette norme – est applicable aux caractéristiques de rayonnement et à l'immunité aux perturbations électromagnétiques des matériels EM actifs (matériels actifs et passifs) utilisés pour la réception, le traitement et la distribution des signaux de radiodiffusion sonore, de télévision, et multimédias interactifs tels que traités dans les parties suivantes de la série EN 50083 : • EN 50083-3: Matériels actifs à large bande utilisés dans les réseaux de distribution coaxiale • EN 50083-4: Matériels passifs à large bande utilisés dans les réseaux de distribution coaxiale • EN 50083-5: Matériels de tête de réseau • EN 50083-6: Matériels optiques – couvre les bandes de fréquences sope3 – uivantes : Tensions perturbatrices injectées sur le réseau électrique basse tension 9 kHz à 30 MHz Rayonnement des matériels actifs 5 MHz à 25 GHz Immunité des matériels actifs 150 kHz à 25 GHz Efficacité d'écran des matériels passifs 5 MHz à 3 GHz (25 GHz) – spécifie les exigences de rayonnement maximal autorisé, l'immunité minimale et l'efficacité d'écran minimale. – décrit les méthodes d'essai pour les essais de conformité. En raison du fait que les réseaux de distribution par câble, anciens réseaux de télédistribution pour les signaux de télévision et de radiodiffusion sonore, sont de plus en plus utilisés pour les services interactifs, ces réseaux peuvent inclure également des matériels qui incorporent, outre les accès des matériels de réseaux de distribution par câble, également un ou plusieurs ou accès pour les signaux télécoms. Ce matériel doit être nommé "matériels de réseaux multimédias". Les câbles coaxiaux utilisés dans les systèmes de distribution par câble ne sont pas couverts par la présente norme. On doit faire référence à la série EN 50117 "Câbles coaxiaux utilisés dans les réseaux de distribution par câbles". La normalisation dans le domaine de la "compatibilité électromagnétique" pour tous terminaux de radiodiffusion (comme les syntoniseurs, récepteurs, décodeurs, etc.) est couverte par les normes européennes EN 55013 et EN 55020 et pour les terminaux multimédias par les EN 55022 et EN 55024. Les exigences de compatibilité électromagnétique des cordons pour les récepteurs sont données dans les normes EN 60966-2-4, EN 60966-2-5 et EN 60966-2-6.
Cable networks for television signals, sound signals and interactive services - Part 2: Electromagnetic compatibility for equipment
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 50083-2:2003
01-marec-2003
1DGRPHãþD
SIST EN 50083-2:1999
SIST EN 50083-2:1999/A1:1999
Cable networks for television signals, sound signals and interactive services -
Part 2: Electromagnetic compatibility for equipment
Cable networks for television signals, sound signals and interactive services -- Part 2:
Electromagnetic compatibility for equipment
Kabelnetze für Fernsehsignale, Tonsignale und interaktive Dienste -- Teil 2:
Elektromagnetische Verträglichkeit von Geräten
Réseaux de distribution par câbles pour signaux de télévision, signaux de radiodiffusion
sonore et services interactifs -- Partie 2: Compatibilité électromagnétique pour les
matériels
Ta slovenski standard je istoveten z: EN 50083-2:2001
ICS:
33.060.40 Kabelski razdelilni sistemi Cabled distribution systems
33.100.01 Elektromagnetna združljivost Electromagnetic compatibility
na splošno in general
SIST EN 50083-2:2003 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 50083-2:2003
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SIST EN 50083-2:2003
EUROPEAN STANDARD EN 50083-2
NORME EUROPÉENNE
EUROPÄISCHE NORM November 2001
ICS 29.020; 33.060.40 Supersedes EN 50083-2:1995 + A1:1997
English version
Cable networks for television signals,
sound signals and interactive services
Part 2: Electromagnetic compatibility for equipment
Réseaux de distribution par câbles pour Kabelnetze für Fernsehsignale,
signaux de télévision, signaux de Tonsignale und interaktive Dienste
radiodiffusion sonore et services Teil 2: Elektromagnetische Verträglichkeit
interactifs von Geräten
Partie 2: Compatibilité électromagnétique
pour les matériels
This European Standard was approved by CENELEC on 2001-01-01. 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
© 2001 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 50083-2:2001 E
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SIST EN 50083-2:2003
EN 50083-2: 2001 - 2 -
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 50083-2:1995, its amendment A1:1997 and a second amendment to EN 50083-2.
The text of this second amendment was submitted to the Unique Acceptance Procedure and was
approved by CENELEC on 2001-01-01 to be published as part of a second edition of
EN 50083-2.
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) 2002-06-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2004-01-01
__________
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Contents
Page
1 Scope .4
1.1 General .4
1.2 Specific scope of this part 2 .4
2 Normative references.5
3 Terms, definitions, symbols and abbreviations .6
3.1 Terms and definitions.6
3.2 Symbols .10
3.3 Abbreviations .10
4 Methods of measurements.11
4.1 Disturbance voltages from equipment.11
4.1.1 Disturbance voltages from equipment in the frequency range from 9 kHz to 30 MHz 11
4.1.2 Disturbance voltages from equipment at the AC mains frequency and its harmonics 12
4.1.3 Measurement of input terminal disturbance voltage .12
4.2 Radiation from active equipment.12
4.2.1 General measurement requirements.12
4.2.2 Methods of measurements.13
4.3 Immunity of active equipment.18
4.3.1 Measurement of the external immunity to ambient fields.19
4.3 2 Internal immunity (Immunity to unwanted signals).22
4.4 Screening effectiveness of passive equipment .25
4.4.1 General measurement requirements.25
4.4.2 Methods of measurements.25
4.5 Electrostatic discharge immunity test for active equipment.26
4.6 Electrical fast transient/burst immunity test for AC power ports .26
5 Performance requirements.27
5.1 Disturbance voltages from equipment.27
5.1.1 Limits of mains terminal disturbance voltage.27
5.1.2 Limits of input terminal disturbance voltages.27
5.2 Radiation.27
5.2.1 Radiation from active equipment.27
5.2.2 Local oscillator power at the outdoor unit input .28
5.3 Immunity of active equipment.28
5.3.1 External immunity to electromagnetic fields .28
5.3.2 Internal immunity .29
5.3.3 Immunity of outdoor units to image frequency signals.30
5.4 Screening effectiveness of passive equipment .30
5.5 Electrostatic discharge immunity test for active equipment.31
5.6 Electrical fast transient/burst immunity test for AC power ports .31
Figures.32
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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 television and sound 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-networks 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 these 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 2
This standard
� applies to the radiation characteristics and immunity to electromagnetic disturbances of active
and passive equipment for the reception, processing and distribution of television, sound and
interactive services signals, as dealt with in the following parts of EN 50083 series:
- EN 50083-3 "Active wideband equipment for coaxial cable networks"
- EN 50083-4 "Passive wideband equipment for coaxial cable networks"
- EN 50083-5 "Headend equipment"
- EN 50083-6 "Optical equipment"
� covers the following frequency ranges:
Disturbance voltage injected into the mains 9 kHz to 30 MHz
Radiation from active equipment 5 MHz to 25 GHz
Immunity of active equipment 150 kHz to 25 GHz
1)
Screening effectiveness of passive equipment 5 MHz to 3 GHz (25 GHz)
________________________________
1)
For "Screening effectiveness of passive equipment" no requirements apply at present for the frequency range 3 GHz
to 25 GHz. Methods of measurement and limits are investigated for inclusion in a future amendment or revised edition.
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� specifies requirements for maximum allowed radiation, minimum immunity and minimum
screening effectiveness;
� describes test methods for conformance testing.
Coaxial cables for cable networks do not fall under the scope of this standard. Reference is made
to the European Standard series EN 50117 "Coaxial cables used in cabled distribution networks".
Standardisation in the field of „Electromagnetic compatibility“ for any user terminals (e.g. tuners,
receivers, decoders, multimedia terminals etc.) is covered by the European Standards EN 55013
and EN 55020.
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.
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 50082-1 1997 Electromagnetic compatibility (EMC)
Generic immunity standard
Part 1: Residential, commercial and light industry
EN 50083 series Cable networks for television signals, sound signals and interactive
services
EN 50083-3 1998 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 2001 Part 5: Headend equipment
EN 50083-6 1997 Part 6: Optical equipment
EN 50083-8 2000 Part 8: Electromagnetic compatibility for networks
EN 50117 series Coaxial cables used in cabled distribution networks
EN 55013 1990 Limits and methods of measurement of radio disturbance
characteristics of broadcast receivers and associated equipment
(CISPR 13:1975 + A1:1983, modified)
EN 55020 1994 Electromagnetic immunity of broadcast receivers and associated
equipment
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 3000 MHz, IEC 60169-2 connectors)
(IEC 60966-2-4:1997)
EN 60966-2-5 1999 Radio frequency and coaxial cable assemblies; Part 2-5: Detail
specification for cable assemblies for radio and TV receivers
(Frequency range 0 to 1000 MHz, IEC 60169-2 connectors)
(IEC 60966-2-5:1998)
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EN 60966-2-6 1999 Radio frequency and coaxial cable assemblies; Part 2-6: Detail
specification for cable assemblies for radio and TV receivers
(Frequency range 0 to 3000 MHz, IEC 60169-24 connectors)
(IEC 60966-2-6:1998)
EN 61000-3-2 1995 Electromagnetic compatibility (EMC)
Part 3: Limits - Section 2: Limits for harmonic current emissions
(equipment input current up to and including 16 A per phase)
(IEC 61000-3-2:1995)
EN 61000-4-2 1996 Electromagnetic compatibility (EMC)
Part 4: Testing and measurement techniques
Section 2: Electrostatic discharge immunity test
(IEC 61000-4-2:1995)
EN 61000-4-3 1996 Electromagnetic compatibility (EMC)
Part 4: Testing and measurement techniques
Section 3: Radiated, radio-frequency, electromagnetic field
immunity test (IEC 61000-4-3:1995)
EN 61000-4-4 1995 Electromagnetic compatibility (EMC)
Part 4: Testing and measurement techniques
Section 4: Electrical fast transient/burst immunity test
(IEC 61000-4-4:1995)
EN 61000-4-6 1996 Electromagnetic compatibility (EMC)
Part 4: Testing and measurement techniques
Section 6: Immunity to conducted disturbances, induced by
radio-frequency fields (IEC 61000-4-6:1996)
EN 61079-1 1993 Methods of measurement on receivers for satellite broadcast
transmissions in the 12 GHz band - Part 1: Radio- frequency
measurements on outdoor units (IEC 61079-1:1992)
IEC 60050(161) 1990 International Electrotechnical Vocabulary (IEV)
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 IEC-numbering given in brackets. In addition some more specific definitions, used in this
standard, are listed.
3.1.1
radiation (electromagnetic) [IEV 161-01-10]
1. the 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.
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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
internal immunity [IEV 161-03-06]
ability of a device, equipment or system to perform without degradation in the presence
of electromagnetic disturbances appearing at its normal input terminals or antenna
3.1.4
external immunity [IEV 161-03-07]
ability of a device, equipment or system to perform without degradation in the presence
of electromagnetic disturbances entering other than via its normal input terminals or
antenna
3.1.5
mains immunity [IEV 161-03-03]
immunity to mains-borne disturbance
3.1.6
immunity level [IEV 161-03-14]
maximum level of a given electromagnetic disturbance incident on a particular device,
equipment or system for which it remains capable of operating at a required degree of
performance
3.1.7
immunity limit [IEV 161-03-15]
specified minimum immunity level
3.1.8
immunity margin [IEV 161-03-16]
the ratio of the immunity limit to the electromagnetic compatibility level
3.1.9
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.
3.1.10
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
3.1.11
well-matched
matching condition when the return loss of the equipment complies with the requirements
of EN 50083-3, Table 1
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3.1.12
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
3.1.13
electromagnetic interference (EMI) [IEV 161-01-06]
degradation of the performance of an equipment, transmission channel or system caused
by an electromagnetic disturbance
NOTE 1 In English, the terms "electromagnetic disturbance" and "electromagnetic interference" designate respectively
the cause and the effect, but they are often used indiscriminately.
NOTE 2 In French, the terms "perturbation électromagnétique" and "brouillage électromagnétique" designate
respectively the cause and the effect, and should not be used indiscriminately.
3.1.14
operating frequency range
the passband for the wanted signals for which the equipment has been designed
3.1.15
wanted signal
during measurements, the wanted signal shall be simulated using a sinewave test signal
having the frequency within the operating frequency range and the appropriate level
3.1.16
unwanted signal
signals inside and outside of the operating frequency range that are not considered as
wanted signals
When measuring immunity (to unwanted signals), the unwanted signal shall be simulated
using two sine-wave test signals.
3.1.17
first satellite intermediate frequency range
output frequency range of the outdoor unit which is comprised of the frequency band
between 950 MHz and at least 3 GHz or parts thereof
3.1.18
carrier-to-interference ratio
minimum level difference measured at the output of an active equipment 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).
3.1.19
individual receiving system
system designed to provide television and sound signals to an individual household
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3.1.20
spurious signals
all unwanted signals in the frequency range of interest
3.1.21
band
nominal operating frequency range of the equipment
3.1.22
electrostatic discharge (ESD) [IEV 161-01-22]
a transfer of electric charge between bodies of different electrostatic potential in
proximity or through direct contact
3.1.23
transient (adjective and noun) [IEV 161-02-01]
pertaining to or designating a phenomenon or a quantity which varies between two
consecutive steady states during a time interval short compared with the time-scale of
interest
3.1.24
burst [IEV 161-02-07]
sequence of a limited number of distinct pulses or an oscillation of limited duration
3.1.25
test levels
preferential range of test level for ESD or fast transient test
3.1.26
port
particular interface of the specific equipment with the external electromagnetic
environment:
Enclosure port
AC power port ����� ����� Signal port
EQUIPMENT
DC power port ����� ����� Control port
3.1.27
enclosure port
physical boundary of the equipment through which electromagnetic fields may be
transmitted
3.1.28
signal port
point at which a cable for the wanted signal is connected to the equipment
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3.1.29
control port
point at which a cable for the control signal is connected to the equipment
3.1.30
AC power port
point at which a cable for the AC power supply is connected to the equipment
3.1.31
DC power port
point at which a cable for the DC power supply is connected to the equipment
3.1.32
in-band immunity
immunity against disturbance at any frequency of the wanted signals carried at the
interfaces and used internally within the equipment under test (e.g. input/output
frequencies, IF, video band, etc.)
3.1.33
out-of-band immunity
immunity against disturbance from signals outside the frequency band(s) of the wanted
signal carried at the interfaces and used internally within the equipment under test (e.g.
input/output frequencies, IF, video band, etc.)
3.1.34
RF signal port
antenna input port or RF network port
3.1.35
antenna input port
input terminal of the equipment (e.g channel converter, DBS tuner,.) under test
3.1.36
RF network port
point at which a coaxial cable for the wanted RF signal is connected to the equipment
but excluding direct connection to the antenna
3.2 Symbols
Under consideration
3.3 Abbreviations
AC alternating current
ALC automatic level control
AM amplitude modulation
BSS broadcast satellite services
CATV Community Antenna Television (system)
COFDM Coded Orthogonal Frequency Division Multiplex
CW continuous wave
DBS direct broadcast satellite
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DSR digital satellite radio
EMC electromagnetic compatibility
emf electromotive force
EMI electromagnetic interference
EUT equipment under test
FM frequency modulation
FSS fixed satellite services
IF intermediate frequency
LNB low noise broadband-converter
MATV Master Antenna Television (system)
QAM quadrature amplitude modulation
QPSK quadrature phase shift keying
RF radio frequency
SAT satellite
S-channel special channel
SMATV Satellite Master Antenna Television (system)
TV television
VHF very high frequency
VSB vestigial side band
NOTE Only the abbreviations used in the English version of this part of EN 50083 are mentioned in this subclause.
The German and the French versions of this part may use other abbreviations. Refer to 3.3 of each language version
for details.
4 Methods of measurements
General operating conditions
Measurements shall be, unless otherwise specified, carried out with the rated performance of the
equipment under test and at a standard room temperature. If required, additional measurements
shall be carried out at the highest and lowest rated ambient temperatures.
The equipment shall be tested including all those sub-assemblies with which it would normally be
used.
4.1 Disturbance voltages from equipment
4.1.1 Disturbance voltages from equipment in the frequency range from 9 kHz to 30 MHz
Introduction
The method described is applicable to the measurement of disturbance voltages from equipment
in the frequency range of 9 kHz to 30 MHz on the mains line.
The measured voltage includes narrowband interference and broadband interference such as
that produced by semiconductor rectifiers.
4.1.1.1 General measurement requirements
Disturbance voltage measurements should be carried out in a screened room according to the
method described in EN 55013, with the exception that the wanted signal is a sinusoidal carrier.
At all frequencies in the range of interest the disturbance voltage injected into the mains by the
equipment under test shall be measured by means of a specified artificial mains network with a
measuring receiver having a quasi-peak detector for broadband measurements and an average
detector for narrowband measurements.
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4.1.1.2 Measurement of mains terminal disturbance voltages
Equipment required: According to EN 55013
Equipment layout and connections: According to EN 55013
Operating conditions
The equipment under test shall be operated in accordance with the manufacturers
recommendations and tested under conditions which maximise the disturbance voltages.
All RF-ports shall be terminated with non-radiating loads of their nominal impedance. The supply
voltage shall be set to a value within the specified rating.
Measuring procedure: According to EN 55013
Presentation of results: According to EN 55013
The results shall be expressed in terms of dB(µV) and shall comply with the limits given in
Table 1.
4.1.2 Disturbance voltages from equipment at the AC mains frequency and its harmonics
If the input current rating is within the scope of EN 61000-3-2, the limits and test methods of this
standard shall apply.
4.1.3 Measurement of input terminal disturbance voltage
Method of measurement
The measurement shall be performed according to the method described in EN 55013 where
"antenna terminal" should be intended as "input terminal" of the equipment (e.g. channel
converter, DBS tuner, etc.) under test.
Presentation of the results
The disturbance voltage level of the equipment under test at the local oscillator frequency and its
harmonics shall be expressed in terms of input terminal disturbance voltage in dB(µV) and shall
comply with the relevant limits given in Table 2.
4.2 Radiation from active equipment
Introduction
The methods described are applicable to the measurement of radiation from active equipment at the
signal frequencies, at the local oscillator frequencies and their harmonics and at other relevant
frequencies.
In the frequency range 5 MHz to 30 MHz the "coupling unit" method is used.
In the frequency range 30 MHz to 950 MHz the "absorbing clamp" method of EN 55013 is used.
In the frequency range 950 MHz to 25 GHz the "substitution" method is used.
4.2.1 General measurement requirements
The measurement cables, coupling devices and terminations shall all be well-matched and well-
screened. If these conditions cannot be achieved, appropriate corrections shall be made for the
results. Test equipment shall be 75 � impedance or provided with appropriate matching pads.
An indoor, or outdoor, site may be used. When indoors, a room of sufficient size must be chosen,
so that any reflecting and absorbing objects may be so positioned or sufficiently removed from
the measuring set-up that they do not influence the results.
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SIST EN 50083-2:2003
- 13 - EN 50083-2: 2001
Measurements shall be made at the following ports:
– all RF-ports;
– the mains lead (if any);
– all single or multiple wire connections (if any).
Measurements shall be made at the following frequencies:
Single channel equipment
– at the vision and sound carrier frequencies;
– at any other frequency where disturbance can occur.
Wideband equipment
– at the highest and lowest vision carrier frequencies in each used band and at a selection of
intervening frequencies chosen to give a realistic representation of the radiation pattern
throughout the operating frequency range.
– at any other frequency where disturbance can occur.
Frequency converters
Output ports and mains lead (if any):
– at the input and output vision and sound carrier frequencies;
– at all local oscillator fundamental frequencies;
– at any local oscillator harmonic, and any other frequencies where disturbance can occur.
Input ports:
– at all local oscillator fundamental frequencies;
– at selected local oscillator harmonics, or other frequencies (as above).
4.2.2 Methods of measurements
4.2.2.1 Measurement of radiation in the frequency range 5 MHz to 30 MHz
For the measurement of radiation in the frequency range 5 MHz to 30 MHz the coupling unit
method suitable for coaxial cables having a characteristic impedance of 75 � shall be used to
measure the conducted emissions from the equipment under test.
NOTE The use of the absorbing clamp method is also possible in this frequency range. This clamp has similar
properties as the 150 � coupling units and can be used whenever the coupling units cannot be realised or applied
(either due to the number of conductors in one cable or due to the size of the installation or for other reasons). The
measurement set-up and the calibration factors are shown in the manual of the injection clamp.
Equipment required
The following equipment is required:
–
...
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