SIST EN 55103-1:2010
(Main)Electromagnetic compatibility - Product family standard for audio, video, audio-visual and entertainment lighting control apparatus for professional use - Part 1: Emissions
Electromagnetic compatibility - Product family standard for audio, video, audio-visual and entertainment lighting control apparatus for professional use - Part 1: Emissions
This European Standard for EMC emission requirements applies to professional audio, video, audio-visual and entertainment lighting control apparatus as defined in 3.6 intended for use in the environments described in Clause 4. This includes the digital apparatus defined in 3.5 and sub-assemblies, see 6.3. Disturbances in the frequency range 0 Hz to 400 GHz are covered, but requirements are not set over the whole of that range. See Note 5. NOTE 1 In Annex D, information is included on infra-red radiation in the wavelength range 0,7 µm to 1,6 µm. Fault conditions of source or victim apparatus are not taken into account. Apparatus as defined in 3.4, 3.5 and 3.6 may be operated with any source of power. NOTE 2 Sources of power may include, for example: the public low-voltage supply; private supplies with similar characteristics; a d.c. source provided specifically for the apparatus; batteries internal to the apparatus; stand-by generators. Some standards may not apply to private low-voltage supplies. NOTE 3 In special cases, for instance when highly susceptible apparatus is being used in proximity, additional mitigation measures may have to be employed to reduce the electromagnetic emission further, below the specified levels. NOTE 4 Professional-user receiving apparatus may be very sensitive to disturbance; see Annex E. This European Standard does not apply to - consumer apparatus, - apparatus specifically designed for security systems, and - apparatus designed to radiate electromagnetic energy for radio communications purposes.
Elektromagnetische Verträglichkeit - Produktfamiliennorm für Audio-, Video- und audiovisuelle Einrichtungen sowie für Studio-Lichtsteuereinrichtungen für professionellen Einsatz - Teil 1: Störaussendungen
Compatibilité électromagnétique - Norme de famille de produits pour les appareils à usage professionnel audio, vidéo, audiovisuels et de commande de lumière pour spectacles - Partie 1: Emissions
Elektromagnetna združljivost - Standard za družino izdelkov za regulacijo avdio, video, avdiovizualnih in osvetlitvenih zabaviščnih naprav za profesionalno uporabo - 1. del: Oddajanje
Ta evropski standard za zahteve glede oddajanja EMC velja za profesionalne avdio, video, avdiovizualne in osvetlitvene zabaviščne naprave, kot so opredeljene v točki 3.6, namenjene za uporabo v okoljih, opisanih v Klavzuli 4. Vključuje digitalne naprave, opredeljene v točki 3.5., in podsklope (glej točko 6.3). Motnje v frekvenčnem razponu od 0 Hz do 400 GHz so zajete, vendar zahteve niso podane za ta celotni razpon (glej Opombo 5). OPOMBA 1: V Dodatku D so vključene informacije o infrardečem sevanju v razponu valovnih dolžin od 0,7 do 1,6 µm. Okvare vira ali prizadete naprave niso upoštevane. Naprave, opredeljene v točkah 3.4, 3.5 in 3.6, lahko napaja kakršen koli vir energije. OPOMBA 2: Viri energije lahko na primer vključujejo: javno nizkonapetostno oskrbo; zasebne oskrbe s podobnimi značilnostmi; enosmerni vir, namenjen posebej za napravo; notranje baterije naprave; generatorje v stanju pripravljenosti. Nekateri standardi morda ne veljajo za zasebne nizkonapetostne oskrbe. OPOMBA 3: V posebnih primerih, na primer kadar se v bližini uporabi zelo dovzetna naprava, se lahko uporabijo dodatni omilitveni ukrepi za dodatno zmanjševanje elektromagnetnih motenj pod določenimi ravnmi. OPOMBA 4: Naprava za sprejemanje za profesionalnega uporabnika je lahko zelo občutljiva na motnje (glej Dodatek E). Ta evropski standard ne velja za - potrošniške naprave; naprave, posebej zasnovane za varnostne sisteme in - naprave, zasnovane za oddajanje elektromagnetne energije za namene radijskih komunikacij.
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 55103-1:2010
01-december-2010
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SIST EN 55103-1:1998
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Electromagnetic compatibility - Product family standard for audio, video, audio-visual and
entertainment lighting control apparatus for professional use - Part 1: Emissions
Elektromagnetische Verträglichkeit - Produktfamiliennorm für Audio-, Video- und
audiovisuelle Einrichtungen sowie für Studio-Lichtsteuereinrichtungen für professionellen
Einsatz - Teil 1: Störaussendungen
Compatibilité électromagnétique - Norme de famille de produits pour les appareils à
usage professionnel audio, vidéo, audiovisuels et de commande de lumière pour
spectacles - Partie 1: Emissions
Ta slovenski standard je istoveten z: EN 55103-1:2009
ICS:
33.100.10 Emisija Emission
33.160.01 Avdio, video in avdiovizualni Audio, video and audiovisual
sistemi na splošno systems in general
SIST EN 55103-1:2010 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 55103-1:2010
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SIST EN 55103-1:2010
EUROPEAN STANDARD
EN 55103-1
NORME EUROPÉENNE
July 2009
EUROPÄISCHE NORM
ICS 33.100.10 Supersedes EN 55103-1:1996
English version
Electromagnetic compatibility -
Product family standard for audio, video, audio-visual
and entertainment lighting control apparatus for professional use -
Part 1: Emissions
Compatibilité électromagnétique - Elektromagnetische Verträglichkeit -
Norme de famille de produits Produktfamiliennorm für Audio-, Video-
pour les appareils à usage professionnel und audiovisuelle Einrichtungen sowie
audio, vidéo, audiovisuels et de für Studio-Lichtsteuereinrichtungen
commande de lumière pour spectacles - für professionellen Einsatz -
Partie 1: Emissions Teil 1: Störaussendungen
This European Standard was approved by CENELEC on 2009-07-01. 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, Bulgaria, Cyprus, the
Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: Avenue Marnix 17, B - 1000 Brussels
© 2009 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 55103-1:2009 E
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SIST EN 55103-1:2010
EN 55103-1:2009 - 2 -
Foreword
This European Standard was prepared by the Technical Committee CENELEC TC 210, Electromagnetic
compatibility (EMC).
The text of the draft was submitted to the formal vote and was approved by CENELEC as EN 55103-1 on
2009-07-01.
This European Standard supersedes EN 55103-1:1996.
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) 2010-07-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2012-07-01
This European Standard has been prepared under a mandate given to CENELEC by the European
Commission and the European Free Trade Association and covers protection requirements of EC Directive
2004/108/EC. See Annex ZZ.
___________
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Contents
e1 Sc o p e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2 Normative references . 4
3 Definitions . . . 5
4 Electromagnetic environment . 6
5 Disturbance phenomena . . . . . . . . . . . . . . . . . . . . . 7
6 Conditions during measurement . 7
6.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
6.2 Ports . 8
6.3 S u b- as s em bl i e s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
6.4 Racks and cabinets . 8
6.5 Special conditions of measurement for apparatus containing audio amplifiers . 8
7 Documentation for the purchaser/user . 8
7.1 Documentation which shall be supplied to the purchaser/user . 8
7.2 Documentation which shall be available to the purchaser/user upon request . 9
8 Emission limits . 9
Annex A (normative) Method of measurement of radiated magnetic fields, 50 Hz to 50 kHz . 11
Annex B (normative) Method of measurement of inrush current . 14
Annex C (normative) Method of measurement of conducted emission from
Telecommunications/Network ports . 16
Annex D (informative) Apparatus using infra-red radiation for signal transmission or control
purposes . 17
Annex E (informative) Use of apparatus near wireless microphone receivers and receiving
antennas . 18
Annex F (informative) Limitation of 'hot switching' inrush current . 20
Annex G (informative) Background to the standard and justification of adopted methods and
limits for this standard and its companion on immunity (EN 55103-2) . 21
Annex ZZ (informative) Coverage of Essential Requirements of EC Directives . 26
Bibliography . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Figure 1 – Examples of ports . 6
Figure A.1 – Construction of the loop sensor . 12
Figure A.2 – Typical test setup for radiated emissions, magnetic field, 50 Hz to 50 kHz . 13
Figure E.1 – Guidance for requirements on enclosure port emission for apparatus
intended to be used near the antennas of wireless microphones . 18
Table 1 – Emission . . . 9
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1 Scope
This European Standard for EMC emission requirements applies to professional audio, video, audio-visual
and entertainment lighting control apparatus as defined in 3.6 intended for use in the environments described
in Clause 4. This includes the digital apparatus defined in 3.5 and sub-assemblies, see 6.3.
Disturbances in the frequency range 0 Hz to 400 GHz are covered, but requirements are not set over the
whole of that range. See Note 5.
NOTE 1 In Annex D, information is included on infra-red radiation in the wavelength range 0,7 µm to 1,6 µm.
Fault conditions of source or victim apparatus are not taken into account. Apparatus as defined in 3.4, 3.5
and 3.6 may be operated with any source of power.
NOTE 2 Sources of power may include, for example: the public low-voltage supply; private supplies with similar characteristics; a d.c.
source provided specifically for the apparatus; batteries internal to the apparatus; stand-by generators. Some standards may not apply to
private low-voltage supplies.
NOTE 3 In special cases, for instance when highly susceptible apparatus is being used in proximity, additional mitigation measures
may have to be employed to reduce the electromagnetic emission further, below the specified levels.
NOTE 4 Professional-user receiving apparatus may be very sensitive to disturbance; see Annex E.
This European Standard does not apply to
- consumer apparatus,
- apparatus specifically designed for security systems, and
- apparatus designed to radiate electromagnetic energy for radio communications purposes.
NOTE 5 To ensure freedom from interference, manufacturers should consider the characteristics of other equipment likely to be in the
same environment and thus determine whether limitation of emissions in additional frequency ranges is necessary.
The objective of this standard is to define limits and methods of measurement for apparatus defined in the
scope, in relation to continuous and transient, conducted and radiated disturbances. These requirements
represent essential electromagnetic compatibility requirements.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
EN 55013 2001 Sound and television broadcast receivers and associated equipment -
Radio disturbance characteristics - Limits and methods of measurement
(CISPR 13:2001, mod.)
EN 55014-1 2000 Electromagnetic compatibility - Requirements for household appliances,
+ A1 2001 electric tools and similar apparatus - Part 1: Emission
+ A2 2002 (CISPR 14-1:2000 + A1:2001 + A2:2002)
EN 55022 2006 Information technology equipment - Radio disturbance characteristics -
Limits and methods of measurement (CISPR 22:2005, mod.)
EN 60268-3 2000 Sound system equipment - Part 3: Amplifiers (IEC 60268-3:2000)
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EN 60107-1 1997 Methods of measurement on receivers for television broadcast
transmissions - Part 1: General considerations - Measurements at radio and
video frequencies (IEC 60107-1:1997)
EN 61000-3-2 2006 Electromagnetic compatibility (EMC) - Part 3-2: Limits - Limits for harmonic
current emissions (equipment input current ≤ 16 A per phase)
(IEC 61000-3-2:2005)
EN 61000-3-3 1995 Electromagnetic compatibility (EMC) - Part 3-3: Limits - Limitation of voltage
changes, voltage fluctuations and flicker in public low-voltage supply
systems, for equipment with rated current ≤ 16 A per phase and not subject
to conditional connection (IEC 61000-3-3:1994)
+ IS1 2005 Interpretation of Clause 5 and Annex A of EN 61000-3-3:1995 + A1:2001
EN 61000-3-11 2000 Electromagnetic compatibility (EMC) - Part 3-11: Limits - Limitation of
voltage changes, voltage fluctuations and flicker in public low-voltage supply
systems - Equipment with rated current ≤ 75 A and subject to conditional
connection (IEC 61000-3-11:2000)
EN 61000-3-12 2005 Electromagnetic compatibility (EMC) - Part 3-12: Limits - Limits for harmonic
currents produced by equipment connected to public low-voltage systems
with input current > 16 A and ≤ 75 A per phase (IEC 61000-3-12:2004)
3 Definitions
For the purposes of this document, the following terms and definitions apply.
Definitions related to EMC and to relevant phenomena may be found in the EU Directive on
EMC (2004/108/EC), in IEC 60050-161 and in other IEC and CISPR Publications.
3.1
electromagnetic compatibility
the ability of a device, unit of equipment or system to function satisfactorily in its electromagnetic
environment, without introducing intolerable disturbances to anything in that environment
3.2
port
particular interface of the specified apparatus with the electromagnetic environment (see Figure 1)
3.3
enclosure port
the physical boundary of the apparatus through which electromagnetic fields may radiate or impinge
3.4
professional apparatus
apparatus for use in trades, professions or industries and which is not intended for sale to the general public
3.5
professional digital apparatus
professional apparatus designed for the purpose of controlling audio, video, audiovisual or entertainment
lighting characteristics, by means of periodic pulsed electrical waveforms, or of processing audio, video or
lighting control signals in digital form
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3.6
professional entertainment lighting control apparatus
professional apparatus producing electrical control signals for controlling the intensity, colour, nature or
direction of the light from a luminaire, where the intention is to create artistic effects in theatrical, television or
musical productions and visual presentations
3.7
test report
the documentation of the EMC tests performed, and their results, prepared by the persons who carried out
the tests, for example the manufacturer or a test laboratory
3.8
telecommunications or network port
port for data and signalling transfer, which is intended to interconnect widely-dispersed systems by such
means as
- direct connection to multi-user telecommunications networks (such as public switched networks),
- local area, and similar, networks
NOTE Ports intended for local interconnection of the components of a single system (such as analogue and RS-232 ports) are not
considered to be telecommunications or network ports for the purposes of this standard.
Enclosure port
a.c. power ports
earth ports
Apparatus
d.c. power ports signal/control ports
Figure 1 - Examples of ports
4 Electromagnetic environment
Sets of limits are specified in Clause 8 for the following five environments. The apparatus shall conform to
one or more of the sets of limits. It is the responsibility of the manufacturer to apply the appropriate set or
sets of limits to his apparatus (see Table 1).
E1 Residential (including both of the location types class 1 and 2 found in IEC 61000-2-5)
E2 Commercial and light industrial (including, for example, theatres, and television studios which are not
purpose-built studios)
E3 Urban outdoors (based on the definition of location type class 6 in IEC 61000-2-5)
E4 Controlled EMC environment (for example purpose built broadcasting or recording studio), and the rural
outdoors environment (far away from railways, transmitters, overhead power lines, etc.)
NOTE A controlled EMC environment exists in a building where the installation has been designed having special regard to EMC,
and where technical personnel are present with experience of EMC technology.
E5 Heavy industrial (see EN 61000-6-4); and environments close to broadcast transmitters
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5 Disturbance phenomena
This standard sets requirements for the following disturbance phenomena (see Table 1):
a) enclosure port; r.f. electromagnetic fields, 30 MHz to 1 000 MHz;
b) enclosure port; magnetic fields, 50 Hz to 50 kHz measured at 100 mm;
NOTE 1 The upper frequency limit is higher than that in the companion standard, EN 55103-2; the limit in that standard will be
increased to 50 kHz in a later edition.
c) enclosure port; magnetic fields, 50 Hz to 50 kHz measured at 1 m;
NOTE 2 The upper frequency limit is higher than that in the companion standard, EN 55103-2; the limit in that standard will be
increased to 50 kHz in a later edition.
d) a.c. power port; conducted emissions; harmonic currents 100 Hz to 2 kHz;
e) a.c. power port; conducted emissions; voltage changes imposed by the apparatus upon the power
supply, and inrush current;
f) a.c. power port; conducted emissions; 0,15 MHz to 30 MHz;
g) a.c. power port; conducted emissions; discontinuous interference, 'clicks'; 0,15 MHz to 30 MHz;
h) telecommunications and network ports; conducted emissions; 0,15 MHz to 30 MHz;
i) antenna terminals of broadcast radio and television receivers; conducted emissions; 30 MHz to
1 000 MHz.
6 Conditions during measurement
6.1 General
The apparatus shall be operated in accordance with the manufacturer’s instructions. The measurements shall
be made in the operating mode producing the largest emission of the type being measured, consistent with
normal operation. An attempt shall be made to maximize the emission by varying the configuration of the test
sample (see also 6.3).
The configuration and mode of operation during measurement shall be precisely noted in the test report. If
the apparatus is part of a system, or can be connected to auxiliary apparatus, then the apparatus shall be
tested while connected to the minimum configuration of auxiliary apparatus which is typical of normal use.
Where an apparatus has more than one input or output of a particular type, the number of inputs and outputs
connected to auxiliary apparatus during the measurements shall be the minimum which will enable the
apparatus to perform its intended function.
Measurements shall be performed in well-defined and reproducible conditions for each type of disturbance.
The measurements shall be carried out one by one in sequence, the sequence being optional. Each
measurement, or series of associated measurements of one phenomenon, shall be carried out under a single
set of environmental conditions within the specified operating environmental range of the apparatus and at its
rated supply voltage, unless otherwise specified in this standard or the relevant Basic Standard.
NOTE The methods of measurement are given in the standards (Basic Standards, where they exist) which are referred to in Table 1.
Any necessary modifications or additional information needed for the practical application of the measurements are specified in this
standard.
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6.2 Ports
Measurements shall be made on the relevant ports of the apparatus in accordance with Table 1.
Measurements shall only be carried out if ports of the relevant type exist. Where the apparatus has one or
more groups of similar ports (including different groups having the same port type as defined in this standard)
then at least one example from each group shall be tested.
6.3 Sub-assemblies
If the apparatus contains sub-assemblies which are provided with connectors so that they can be moved
about within it, an attempt shall be made to maximise the emission by moving the sub-assemblies, using only
configurations specified (see 6.1), or not prohibited, by the manufacturer.
Sub-assemblies intended to be housed in a frame shall be measured while installed in a frame in the manner
specified by the manufacturer. The frame shall be specified by the manufacturer and shall be populated with
a typical collection of sub-assemblies.
A subassembly of the types described in the above paragraphs which has been measured in this way and
has satisfied the relevant requirements of this standard, shall be deemed to conform to this standard when
supplied separately, provided that the manufacturer’s documentation states the conditions under which the
sub-assembly conforms to this standard.
6.4 Racks and cabinets
The combining of items of apparatus individually conforming to this standard into a rack or cabinet does not
give rise to additional requirements or a requirement for additional testing.
6.5 Special conditions of measurement for apparatus containing audio amplifiers
Except for phenomena 2 and 3, for which special conditions are specified (see Annex A), apparatus
containing audio amplifiers which draw a supply current which varies by less than 15 % of the maximum
current with input signals between no signal and rated source e.m.f. (as defined in EN 60268-3) shall be
tested with no input signal. Other audio amplifiers shall be tested under the following conditions:
- rated supply voltage;
- normal position of the user controls;
- widest flat bandwidth response of audio signal path;
- input signals and rated load conditions as given in EN 60268-3.
7 Documentation for the purchaser/user
7.1 Documentation which shall be supplied to the purchaser/user
The manufacturer shall state the environments for which the apparatus has achieved conformity and in which
it is intended to be used. In addition, the manufacturer shall state
- the average half-cycle r.m.s. inrush current, on initial switch-on,
- the average half-cycle r.m.s. inrush current after a supply interruption of 5 s.
These currents are determined in accordance with EN 61000-3-3 and Annex B. See also Annex F.
The manufacturer shall state any special measures that may have to be taken by the purchaser or user; for
example:
- the use of screened or special cables;
- external measures to reduce the inrush current after the 5 s interruption.
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7.2 Documentation which shall be available to the purchaser/user upon request
A list of auxiliary apparatus, connectors and cables which, when used in conjunction with the apparatus,
conform to the emission requirements of this standard shall be made available.
8 Emission limits
Apparatus within the scope of this standard shall comply with the requirements of this standard independently
of the nature of its source of power. Some example sources are listed in Clause 1. It may be determined from
consideration of the electrical characteristics and usage of a particular apparatus that some of the
measurements are inappropriate and therefore unnecessary. In such a case it is required that the decision
not to measure be recorded in the test report. The emission limits established by this standard are shown in
Table 1.
Table 1 - Emission
Port Phenomenon Frequency Limits, Limits, Applicable Notes
range environments environments standard
E1 to E3 E4 and E5
1 Radiated 30 MHz to 30 dB (µV/m) 40 dB (µV/m) EN 55022 1
electromagnetic 230 MHz quasi-peak quasi-peak
field at 10 m
230 MHz to 37 dB (µV/m) 47 dB (µV/m)
1 GHz quasi-peak quasi-peak
2 Magnetic 50 Hz to 500 Hz 4 A/m to 0,4 A/m E4 as E1: E5 no Annex A 2 & 3
Enclosure
field, at limits, no test
500 Hz to 0,4 A/m
100 mm
50 kHz
3 Magnetic 50 Hz to 5 kHz 1 A/m to 0,01 A/m E4 as E1: E5 no Annex A 2 & 4
field, at 1 m limits, no test
5 kHz to 50 kHz 0,01 A/m
4 Harmonic See applicable See applicable See applicable EN 61000-3-2 5
currents standard standard standard or
EN 61000-3-12
5 Voltage See applicable See applicable See applicable EN 61000-3-3 5 & 6
changes (and standard standard standard or
inrush current, EN 61000-3-11
see Annex B) and Annex B
6 Conducted 0,15 MHz to 66 dB (µV) to 79 dB (µV) EN 55022
radio-frequency 0,5 MHz 56 dB (µV) quasi-peak
emissions quasi-peak
56 dB (µV) to 66 dB (µV)
46 dB (µV) average average
AC mains
input
0,5 MHz to 56 dB (µV)
7
5 MHz quasi-peak
73 dB (µV)
46 dB (µV) average
quasi-peak
60 dB (µV)
5 MHz to 60 dB (µV)
average
30 MHz quasi-peak
50 dB (µV) average
7 0,15 MHz to See applicable See applicable EN 55014-1 8
Discontinuous 30 MHz standard standard
conducted
radio-frequency
emissions
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Table 1 – Emission (continued)
Port Phenomenon Frequency Limits, Limits, Applicable Notes
range environments environments standard
E1 to E3 E4 and E5
Tele- 8 Conducted 0,15 MHz to 40 dB (µA) to 53 dB (µA) to
communi- radio-frequency 0,5 MHz 30 dB (µA) 43 dB (µA)
emissions quasi-peak quasi-peak
cations
and
30 dB (µA) to 40 dB (µA) to
network
20 dB (µA) average 30 dB (µA)
ports
EN 55022 7 & 9
average
0,5 MHz to 30 dB (µA) 43 dB (µA)
30 MHz quasi-peak quasi-peak
20 dB (µA) average 30 dB (µA)
average
Antenna 9 Conducted See applicable See applicable See applicable EN 55013 10
ports of radio-frequency standard standard standard
broadcast
receivers
NOTE 1 Applicable only to apparatus containing processing devices such as microprocessors operating at frequencies greater
than 9 kHz.
NOTE 2 The limit decreases linearly with the logarithm of frequency.
NOTE 3 Applicable only to apparatus intended for rack mounting. Not applicable to apparatus intended for use only in
environment E5.
NOTE 4 Applicable only to apparatus NOT intended for rack mounting. Not applicable to apparatus intended for use only in
environment E5.
NOTE 5 Applicable only to apparatus within the scopes of the applicable standards.
NOTE 6 EN 61000-3-3 specifies limits for d rather than inrush current. But the values of inrush current itself are important for
max
supply system design. See 7.1.
NOTE 7 The limits decrease linearly with the logarithm of frequency.
NOTE 8 Applicable only to discontinuous emissions exceeding the limits for phenomenon 6.
NOTE 9 Current probe measurement with the line terminated to the reference plane with 150 Ω.
NOTE 10 For wireless microphones, see also EN 301 489-9.
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Annex A
(normative)
Method of measurement of radiated magnetic fields, 50 Hz to 50 kHz
A.1 Purpose
This test method is to verify that the magnetic field emissions from the apparatus under test do not exceed
specified requirements.
A.2 Test apparatus
The following test apparatus shall be used:
a) spectrum analyser having an input impedance greater than or equal to 10 kΩ, a 3 dB bandwidth
between 8 Hz and 30 Hz, and either an r.m.s. or quasi-peak detector;
b) loop sensor having the following specifications (see Figure A.1):
- diameter: 133 mm ± 7 mm;
- number of turns: 36, in 4 layers of 9 turns;
- wire: 1,25 mm diameter insulated copper;
- shielding: electrostatic.
Conversion factor: The field strength, H, in amperes/metre for this sensor is given by 253 x U/f, where U is
the induced voltage in millivolts and f is the frequency in Hz. See Notes 1 and 2 and Figure A.1.
A.3 Test setup
The test setup is shown in Figure A.2.
A.4 Test procedures
A.4.1 General
Audio apparatus shall be fed from a pink noise source; video apparatus shall be fed from a source of
100.0.75.0 colour bars (see 6.1 and EN 60107-1). Verify that the environmental fields do not exceed one
quarter of the limits shown in Table 1.
A.4.2 Apparatus intended for rack mounting
For apparatus intended for rack mounting; top, bottom, back and side faces only are measured.
a) Locate the loop sensor 100 mm ± 5 mm from the top, bottom, back or side of the apparatus under test.
Orient the plane of the loop sensor parallel to the surface.
b) Monitor the output of the spectrum analyser while moving the loop sensor (maintaining the 100 mm
spacing) over the face of the apparatus under test. Note the positions and frequencies of maximum
radiation.
c) Record the positions and frequencies of any emissions exceeding the limit specified in Table 1.
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SIST EN 55103-1:2010
EN 55103-1:2009 - 12 -
A.4.3 Apparatus not intended for rack mounting
For apparatus not intended for rack mounting, all faces are measured.
a) Locate the loop sensor 1 m ± 0,05 m from the face under test of the apparatus. Orient the plane of the
loop sensor parallel to the surface. See Note 4.
b) Monitor the output of the spectrum analyser while moving the loop sensor (maintaining the 1 m spacing)
over the faces of the apparatus under test. Note the points and frequencies of maximum radiation.
c) Record the positions and frequencies of any emissions exceeding the limit specified in Table 1.
NOTE 1 From the induction law: U is given by 2πfNSµ H, where f is the signal frequency, N is the number of turns on the sensor, S the
0
area of the sensor and µ the permeability of free space. Substituting the parameters of the sensor and the va
...
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