CISPR 13:2009

CISPR 13 ®
Edition 5.0 2009-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE
COMITÉ INTERNATIONAL SPÉCIAL DES PERTURBATIONS RADIOÉLECTRIQUES
Sound and television broadcast receivers and associated equipment – Radio
disturbance characteristics – Limits and methods of measurement

Récepteurs de radiodiffusion et de télévision et équipements associés –
Caractéristiques des perturbations radioélectriques – Limites et méthodes de
mesure
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CISPR 13 ®
Edition 5.0 2009-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE
COMITÉ INTERNATIONAL SPÉCIAL DES PERTURBATIONS RADIOÉLECTRIQUES
Sound and television broadcast receivers and associated equipment – Radio
disturbance characteristics – Limits and methods of measurement

Récepteurs de radiodiffusion et de télévision et équipements associés –
Caractéristiques des perturbations radioélectriques – Limites et méthodes de
mesure
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
X
CODE PRIX
ICS 33.100.10 ISBN 978-2-88910-005-7
– 2 – CISPR 13 © IEC:2009
CONTENTS
FOREWORD.5
INTRODUCTION.7
1 Scope and object .8
2 Normative references.8
3 Terms, definitions and abbreviations .9
3.1 Terms and definitions .9
3.2 Abbreviations.10
4 Limits of disturbance.10
4.1 General .10
4.2 Disturbance voltage at the mains terminals .11
4.3 Disturbance voltage at the antenna terminals .12
4.4 Wanted signal and disturbance voltage at the RF output of equipment with
incorporated or with add-on RF video modulator.13
4.5 Disturbance power.13
4.6 Radiated disturbances .13
4.7 Radiated power .14
5 Measurement procedures .15
5.1 General .15
5.2 Test signals.15
5.3 Disturbance voltage at the mains terminals in the frequency range 150 kHz to
30 MHz.16
5.3.1 General .16
5.3.2 Television receivers .16
5.3.3 Sound receivers.17
5.3.4 Associated equipment.17
5.3.5 Audio amplifiers .18
5.3.6 Measurement of the disturbance voltage at the mains terminals .18
5.4 Measurement of disturbance voltage at the antenna terminals of a receiver
and associated equipment with an RF input in the frequency range 30 MHz to
2,15 GHz .18
5.4.1 General .18
5.4.2 Measurement on receivers or associated equipment with coaxial
antenna connections .19
5.4.3 Measurement on receivers or associated equipment with balanced
antenna connectors .19
5.4.4 Presentation of the results .19
5.5 Measurement of the wanted signal and disturbance voltage at the RF output
terminals of associated equipment with an RF video modulator, in the
frequency range 30 MHz to 2,15 GHz.20
5.5.1 General .20
5.5.2 Method of measurement .20
5.6 Measurement of disturbance power of associated equipment (video recorders
excluded) in the frequency range 30 MHz to 1 GHz .20
5.6.1 General .20
5.6.2 Method of measurement .20
5.6.3 Measuring procedure .21
5.6.4 Presentation of the results .21
5.7 Measurement of radiation in the frequency range 30 MHz to 1 GHz at 3 m
distance.21

CISPR 13 © IEC:2009 – 3 –
5.7.1 General .21
5.7.2 Measuring site requirements .22
5.7.3 Disposition of the equipment under test.23
5.7.4 Disposition of the field-strength meter .24
5.7.5 Measurement procedure .24
5.8 Measurement of radiation in the frequency range 1 GHz to 18 GHz .24
5.8.1 Measuring set-up .24
5.8.2 Test site validation.25
5.8.3 Measuring procedure .26
5.8.4 Presentation of the results .26
5.9 Measurement of the local oscillator power at the input terminal of the outdoor
unit.26
6 Interpretation of CISPR radio disturbance limits .26
6.1 Compliance with this standard .26
6.2 Significance of a CISPR limit .26
6.3 Compliance with limits on a statistical basis .27
Annex A (normative) Broadcast receivers for digital signals .34
Annex B (informative) Specification of the wanted signal .38
Bibliography .43

Figure 1 – Colour bar signal levels according to ITU-R Recommendation BT 471-1 (see
5.2) (“red” signal) .28
Figure 2 – Teletext picture (see 5.2) .28
Figure 3 – Example of an artificial mains network 50 Ω-50 μH (see 5.3.1) .29
Figure 4 – Example of artificial mains network 50 Ω-50 μH-5 Ω (see 5.3.1) .29
Figure 5 – Measurement of the radiofrequency disturbance voltage injected into the
mains (see 5.3.1) .30
Figure 6 – Measurement of the radiofrequency disturbance voltage injected into the
mains (top view) (see 5.3.1) .30
Figure 7 – Circuit arrangement for the measurement of disturbance voltages at the
coaxial antenna terminals (see 5.4.2) .31
Figure 8 – Circuit arrangement for receivers with balanced antenna connections (see
5.4.3) .31
Figure 9 – Circuit arrangement for the measurement of the wanted signal and
disturbance voltage at the RF output of video recorders (see 5.5.2) .31
Figure 10 – Circuit arrangement for the measurement of disturbance power of
associated equipment (video recorders excluded) (see 5.6.3) .32
Figure 11 – Measuring site (see 5.7.2).32
Figure 12 – Check of the site suitability (see 5.7.2).32
Figure 13 – Theoretical site attenuation curve for the range 80 MHz to 1 GHz (see
5.7.2) .33
Figure 14 – Open-field measurement at 3 m distance (see 5.7.3).33
Figure A.1 – Measurement of the radiofrequency disturbance voltage injected into the
mains in the frequency range 150 kHz to 30 MHz (side view) .36
Figure A.2 – Example of isolation transformer for 46 MHz to 1,5 GHz .36
Figure A.3 – Typical size of isolation transformer for 46 MHz to 1,5 GHz.37
Figure A.4 – Typical characteristic of insertion loss of isolation transformer for 46 MHz
to 1,5 GHz .37

– 4 – CISPR 13 © IEC:2009
Table 1 – Limits of disturbance voltage at the mains terminals.11
Table 2 – Limits of disturbance voltage at the antenna terminals.12
Table 3 – Limits of the wanted signal and disturbance voltage at RF output terminals of
equipment with RF video modulator.13
Table 4 – Limits of disturbance power .13
Table 5 – Limits of radiated disturbances at 3 m distance .14
Table 6 – Limits of radiated power of tuner units of direct to home satellite receivers .14
Table 7 – Limits of radiated power of outdoor units of direct to home satellite receivers .15

CISPR 13 © IEC:2009 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION

INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE
__________
SOUND AND TELEVISION BROADCAST RECEIVERS
AND ASSOCIATED EQUIPMENT –
RADIO DISTURBANCE CHARACTERISTICS –
LIMITS AND METHODS OF MEASUREMENT

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
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between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
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5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with an IEC Publication.
6) All users should ensure that they have the latest edition of this publication.
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard CISPR 13 has been prepared by CISPR subcommittee I:
Electromagnetic compatibility of information technology equipment, multimedia equipment and
receivers.
This fifth edition of CISPR 13 cancels and replaces the fourth edition published in 2001, its
Amendment 1 (2003) and Amendment 2 (2006).This edition constitutes the introduction of the
RMS-average detector as an alternative to quasi-peak and average detector for conducted and
radiated emission measurements.
The document CISPR/I/296/FDIS, circulated to the National Committees as Amendment 3, led
to the publication of the new edition.

– 6 – CISPR 13 © IEC:2009
The text of this standard is based on the fourth edition, Amendment 1, Amendment 2 and the
following documents:
FDIS Report on voting
CISPR/I/296/FDIS CISPR/I/297/RVD

Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
The committee has decided that the contents of this publication will remain unchanged until the
maintenance result date indicated on the IEC web site under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
CISPR 13 © IEC:2009 – 7 –
INTRODUCTION
The CISPR recommends that the limits and methods of measurement of radio disturbance
characteristics of sound and television receivers contained in the latest edition of CISPR 13,
including amendments, be used, without regional or national addenda or modifications. The
requirements are considered sufficient to reach adequate emission levels to protect radio
broadcast and telecommunication services and to allow other apparatus to operate as intended
at a reasonable distance.
– 8 – CISPR 13 © IEC:2009
SOUND AND TELEVISION BROADCAST RECEIVERS
AND ASSOCIATED EQUIPMENT –
RADIO DISTURBANCE CHARACTERISTICS –
LIMITS AND METHODS OF MEASUREMENT

1 Scope and object
This International Standard applies to the generation of electromagnetic energy from sound
and television receivers for the reception of broadcast and similar transmissions and from
associated equipment. The frequency range covered extends from 9 kHz to 400 GHz.
No measurements need be performed at frequencies where no limits are specified.
Receiving systems for collective reception, in particular:
– cable distribution head ends (Community Antenna Television, CATV);
– community reception systems (Master Antenna Television, MATV)
are covered by IEC 60728-2.
Broadcast receivers for digital signals are covered by Annex A and Annex B.
Information technology equipment (ITE) is excluded, even if intended to be connected to a
television broadcast receiver.
The telecommunication port of broadcast receivers, intended to be connected to a tele-
communication network, is covered by CISPR 22.
In addition, measurements at the telecommunication port are performed with the broadcast
reception functions, which are independent from the telecommunication function, disabled
during the measurement.
PC tuner cards are measured according to the relevant clauses of this standard.
This standard describes the methods of measurement applicable to sound and television
receivers or associated equipment and specifies limits for the control of disturbance from such
equipment.
For multifunction equipment which is subjected simultaneously to different clauses of this
standard and/or other standards, details are given in 4.1.
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.

CISPR 13 © IEC:2009 – 9 –
CISPR 16-1-1:2006, Specification for radio disturbance and immunity measuring apparatus and
methods – Part 1-1: Radio disturbance and immunity measuring apparatus – Measuring
apparatus
Amendment 1 (2006)
Amendment 2 (2007)
CISPR 16-1-2:2003, Specification for radio disturbance and immunity measuring apparatus and
methods – Part 1-2: Radio disturbance and immunity measuring apparatus – Ancillary
equipment – Conducted disturbances
Amendment 1 (2004)
Amendment 2 (2006)
CISPR 16-1-3:2004, Specification for radio disturbance and immunity measuring apparatus and
methods – Part 1-3: Radio disturbance and immunity measuring apparatus – Ancillary
equipment – Disturbance power
CISPR 16-1-4:2007, Specification for radio disturbance and immunity measuring apparatus and
methods – Part 1-4: Radio disturbance and immunity measuring apparatus – Ancillary
equipment – Radiated disturbances
Amendment 1 (2007)
Amendment 2 (2008)
CISPR 16-2-2:2003, Specification for radio disturbance and immunity measuring apparatus and
methods – Part 2-2: Methods of measurement of disturbances and immunity – Measurement of
disturbance power
Amendment 1 (2004)
Amendment 2 (2005)
CISPR 22:2008, Information technology equipment – Radio disturbance characteristics – Limits
and methods of measurement
IEC 60050-161:1990, International Electrotechnical Vocabulary (IEV) – Chapter 161:
Electromagnetic compatibility
Amendment 1 (1997)
Amendment 2 (1998)
IEC 60728-2:2002, Cabled distribution systems for television and sound signals – Part 2:
Electromagnetic compatibility for equipment (only available in English)
ITU-R BT 471-1, Nomenclature and description of colour bar signals
3 Terms, definitions and abbreviations
3.1 Terms and definitions
For the purposes of this document, the following terms, definitions and abbreviations apply.
3.1.1
sound broadcast receivers
appliances intended for the reception of sound broadcast and similar services for terrestrial,
cable and satellite transmission, regardless whether the input signals are digital or analog
___________
There exists a consolidated edition 2.2 (2007) including edition 2.0, its Amendment 1 (2006) and its Amendment 2 (2007).
There exists a consolidated edition 1.2 (2006) including edition 1.0, its Amendment 1 (2004) and its Amendment 2 (2006).
There exists a consolidated edition 2.1 (2008) including edition 2.0 and its Amendment 1 (2007).
There exists a consolidated edition 1.2 (2005) including edition 1.0, its Amendment 1 (2004) and its Amendment 2 (2005).

– 10 – CISPR 13 © IEC:2009
3.1.2
television receivers
appliances intended for the reception of television broadcast and similar services for terrestrial,
cable and satellite transmissions, regardless whether the input signals are digital or analog
3.1.3
associated equipment
equipment either intended to be connected directly to sound or television broadcast receivers,
or to generate or reproduce audio or visual information
NOTE 1 Tuners may be provided with a broadcast-satellite-receiving stage and with demodulators, decoders,
demultiplexers, D/A converters, encoders (e.g. NTSC, PAL or SECAM encoders), etc.
NOTE 2 Frequency converters may be provided with a broadcast-satellite-receiving stage and with devices which
convert the signals to other frequency bands.
NOTE 3 Receivers, tuners, or frequency converters may be tuneable or may only be able to receive a fixed
frequency.
3.1.4
PC tuner cards
sound broadcast receiver cards and television broadcast receiver cards, either to be inserted in
personal computers or permanently integrated therein
3.1.5
outdoor unit of direct to home satellite receiving systems for individual reception
unit consisting of the antenna, the feeding network and the low-noise amplifier with its
associated down-converter. The intermediate frequency amplifier and the demodulator are not
included
3.1.6
multifunction equipment
appliances in which two or more functions are provided in the same unit, for instance television
reception, radio reception, digital clock, tape-recorder or disc player, etc.
3.2 Abbreviations
AM Amplitude Modulation
CATV Community Antenna Television
CD Compact Disc
EUT Equipment Under Test
FM Frequency Modulation
ITE Information Technology Equipment
ITU-R International Telecommunication Union – Radio
LW, MW and SW Long-, Medium- and Short-Waves
MATV Master Antenna Television
PC Personal Computer
RF Radio Frequency
4 Limits of disturbance
4.1 General
For RF disturbances the level shall not exceed the limits specified in 4.2 to 4.7 when measured
using the methods given in Clause 5. Where there is frequency duplication at the boundary of

CISPR 13 © IEC:2009 – 11 –
two ranges, the lower limit shall apply. For equipment in large-scale production, it is required
that, with 80 % confidence, at least 80 % of production complies with the limits (see Clause 6).
Multifunction equipment which is subjected simultaneously to different clauses of this standard
and/or other standards shall be tested with each function operated in isolation, if this can
be achieved without modifying the equipment internally. The equipment thus tested shall be
deemed to have complied with the requirements of all clauses/standards when each function
has satisfied the requirements of the relevant clause/standard.
For equipment for which it is not practical to test with each function operated in isolation, or
where the isolation of a particular function would result in the equipment being unable to fulfil
its primary function, the equipment shall be deemed to have complied if it meets the provisions
of the relevant clause/standard with the necessary functions operative.
4.2 Disturbance voltage at the mains terminals
Measurements shall be made in accordance with 5.3.
Table 1 – Limits of disturbance voltage at the mains terminals
Limit
Frequency
dB(μV)
Equipment type
MHz
Quasi-peak Average a
RMS-average
b b b
0,15 to 0,5 66 to 56 56 to 46 60 to 50
Television and sound receivers
0,5 to 5 56 46 50
and associated equipment
5 to 30 60 50 54
a
The r.m.s average limits can be applied as an alternative to quasi-peak and average limits.
b
Decreasing linearly with the logarithm of the frequency.
NOTE 1 If the limits for the average detector are met when using the quasi-peak detector, then the
limits for the measurements with the average detector are considered to be met.
NOTE 2 The higher value measured with and without the outer conductor screen of the antenna terminal connected
to earth is considered.
NOTE 3 Television receivers with teletext facilities should be tested in teletext mode with teletext picture.

– 12 – CISPR 13 © IEC:2009
4.3 Disturbance voltage at the antenna terminals
Measurements of the antenna terminal voltage shall be made in accordance with 5.4.
The limit values specified correspond to a nominal impedance of 75 Ω.
The limit values for receivers with nominal impedance other than 75 Ω are calculated according
to the following formula:
L = L + 10 log (Z/75) dB(μV)
Z
Table 2 – Limits of disturbance voltage at the antenna terminals
Limit Limit
Frequency
dB(μV) 75 Ω dB(μV) 75 Ω
Equipment type Source
MHz
a b
Quasi-peak RMS-average
Television Local oscillator ≤1 000 Fundamental 46 Fundamental 46
receivers, video
30 to 950 Harmonics 46 Harmonics 46
recorders and PC
tuner cards working
950 to 2 150 Harmonics 54 Harmonics 54
in channels
Other 30 to 2 150 46 46
between
30 MHz and 1 GHz
Television receivers Local oscillator 950 to 2 150 Fundamental 54 Fundamental 54
for broadcast
950 to 2 150 Harmonics 54 Harmonics 54
satellite
transmissions and
Other 30 to 2 150 46 46
c
tuner units
Frequency Local oscillator ≤1 000 Fundamental 54 Fundamental 54
modulation sound
30 to 300 Harmonics 50 Harmonics 50
receivers and
300 to 1 000 Harmonics 52 Harmonics 52
PC tuner cards
Other 30 to 1 000 46 46
Frequency Local oscillator ≤1 000 Fundamental 66 Fundamental 66
modulation car
30 to 300 Harmonics 59 Harmonics 59
radios
300 to 1 000 Harmonics 52 Harmonics 52
Other 30 to 1 000 46 46
Associated Other 30 to 2 150 46 46
equipment with an
RF input, e.g. video
tape player, laser
disc player
a
At frequencies above 1 GHz, the peak detector is used.
b
The RMS-average limits can be applied as an alternative to quasi-peak limits in the entire frequency range.
c
For tuner units, "antenna terminal" means "first intermediate frequency input terminal".
NOTE For AM broadcast receivers for LW, MW and SW, no limits apply.

CISPR 13 © IEC:2009 – 13 –
4.4 Wanted signal and disturbance voltage at the RF output of equipment with
incorporated or with add-on RF video modulator
Measurements of the wanted signal and disturbance voltage at the RF output terminals of
equipment with incorporated or with add-on RF video modulator (e.g. of video recorders and
decoders) shall be made in accordance with 5.5. If the nominal impedance of the RF output is
different from 75 Ω, the limit level shall be calculated with the formula given in 4.3.
Table 3 – Limits of the wanted signal and disturbance voltage at RF
output terminals of equipment with RF video modulator
Limit Limit
Frequency
dB(μV) 75 Ω dB(μV) 75 Ω
Equipment type Source
MHz
a b
Quasi-peak RMS-average
Wanted signal Carrier frequencies and Carrier frequencies and
Equipment with RF
sidebands 76 sidebands 76
video modulator
(e.g. video
30 to 950 Harmonics 46 Harmonics 46

recorders,
950 to 2 150 Harmonics 54 Harmonics 54
camcorders and
decoders)
Other 30 to 2 150 46
a
At frequencies above 1 GHz, the peak detector is used.
b
The RMS-average limits can be applied as an alternative to quasi-peak limits in the entire frequency range.

4.5 Disturbance power
Measurements shall be made in accordance with 5.6.
Table 4 – Limits of disturbance power
Limit
Frequency
dB(pW)
Equipment type
MHz
Quasi-peak Average a
RMS-average
Associated equipment 30 to 300 b b b

45 to 55
35 to 45 39 to 49
(video recorders excluded)
a
The RMS-average limits can be applied as an alternative to quasi-peak and average limits.
b
Increasing linearly with the frequency.
NOTE If the limits for the average detector are met when using the quasi-peak detector, then the limits for the
measurements with the average detector are considered to be met.

4.6 Radiated disturbances
Measurements of the disturbance field due to the local oscillator at its fundamental and
harmonic frequencies and due to all other sources shall be made in accordance with 5.7.

– 14 – CISPR 13 © IEC:2009
Table 5 – Limits of radiated disturbances at 3 m distance
Limit Limit
Frequency
dB(μV/m) dB(μV/m)
Equipment type Source
MHz
a a, b
Quasi-peak RMS-average
Television Local oscillator ≤1 000 a a
Fundamental 57 Fundamental 57
receivers, video
30 to 300
recorders and PC Harmonics 52 Harmonics 52
tuner cards
300 to 1 000
Harmonics 56 Harmonics 56
Other
30 to 230
40 40
230 to 1 000
47 47
Television and Other 30 to 230 40 40
sound receivers for
230 to 1 000 47 47
broadcast satellite
transmissions
(except outdoor
units),
Infrared remote
control units and
Infrared headphone
systems
Frequency Local oscillator ≤1 000 Fundamental 60 Fundamental 60
modulation sound
Harmonics 52 Harmonics 52
30 to 300
receivers and PC
tuner cards
Harmonics 56 Harmonics 56
300 to 1 000
Other 40 40
30 to 230
47 47
230 to 1 000
a
In Japan: 57 dB(μV/m) is relaxed to 66 dB(μV/m) for operating channels <300 MHz and to 70 dB(μV/m) for operating
channels >300 MHz.
b
The RMS-average limits can be applied as an alternative to quasi-peak limits.
NOTE For car radio receivers and for LW, MW and SW AM broadcast receivers, no radiation limits apply.

4.7 Radiated power
Measurement of the radiated power due to the local oscillator at its fundamental and harmonic
frequencies and due to all other sources shall be made in accordance with 5.8.
Table 6 – Limits of radiated power of tuner units of direct to home satellite receivers
Frequency Limit
Equipment type Source
GHz dB(pW)
Television and sound receivers Local oscillator 1 to 3 Fundamental 57
for broadcast satellite
1 to 3 Harmonics 57
transmissions:
tuner units
CISPR 13 © IEC:2009 – 15 –
Table 7 – Limits of radiated power of outdoor units of direct to home satellite receivers
Frequency Limit
Equipment type Source
GHz dB(pW)
Outdoor units of direct to Local oscillator leakage 0,9 to 18 Fundamental 30
home satellite receivers radiated from the antenna
within ±7° of the main
a
beam axis
Equivalent radiated power   1 to 2,5 43
from outdoor unit
2,5 to 18 57
including the local
b
oscillator leakage
a
The direct measurement is carried out according to 5.9. When the reflector of the parabolic antenna cannot be
removed, the indirect measurement according to 5.8 is carried out. In that case, the antenna gain shall be taken
into account.
b
Measurement of the equivalent radiated power shall be in accordance with 5.8. No requirements within ±7° off the
main beam axis of the antenna.

5 Measurement procedures
5.1 General
This clause deals with standardized measurement procedures and measuring equipment.
Deviations from this standard are allowed (e.g. the use of broad-band antennas, the
dimensions of the screened room) provided that the measurement results are comparable to
those resulting from the standardized method and the deviations are noted in the test report.
In case of controversy, the procedure as formulated in this standard shall take precedence.
5.2 Test signals
The standard test signal for television receivers and for other equipment with video signal
input/output and/or an RF modulator is a standard television colour bar signal according to
ITU-R BT 471-1 (see Figure 1). The modulation of the video and the audio signals on the RF
carrier shall be according to the system for which the equipment is intended.
In the case of television receivers, the wanted signal shall be a vision carrier modulated by a
complete video waveform including a colour burst together with an unmodulated sound carrier
of the correct relative amplitude and frequency.
The teletext picture shall preferably be the one shown in Figure 2, consisting of rows of
numbers completely filling the screen. If this picture is not available, measurement shall be
done with the main index page of the national teletext broadcast service. In the latter case the
picture used shall be indicated with the results.
NOTE For countries using non-alphabetical systems, the test pattern of the national teletext broadcast service
also can be used.
– 16 – CISPR 13 © IEC:2009
The standard test signals for radio receivers are:
a) Band II: an RF signal frequency modulated with a monophonic signal at 1 kHz with 37,5 kHz
deviation;
b) LW/MW/SW: an RF signal amplitude modulated with a signal at 1 kHz with 50 %
modulation.
The standard test signals for associated equipment are:
a) audio amplifiers and infrared headphones: a sinusoidal signal at 1 kHz;
b) associated audio equipment e.g. audio tape recorders, record players, CD players: a tape
or disc recorded 1 kHz audio signal with a standard sound level specified by the
manufacturer of the equipment under test;
c) associated video equipment, e.g. video tape players, camcorders, laser disc players: a tape
or disc recorded standard television colour bar signal with 1 kHz audio signal, with a
standard sound level specified by the manufacturer of the equipment under test;
d) electronic organs: a signal derived from depressing the upper C note (approximately
523 Hz);
e) infrared remote controls: a permanent transmission of a typical control function.
For equipment for which the wanted signals are not explicitly described in this standard, the
nominal signals as specified by the manufacturer shall be applied during the tests. (This is e.g.
the case for broadcast receivers for digital signals, decoders, etc.) The manufacturer shall
specify in his technical report which input signal was applied during the tests.
An infrared remote control is considered as a part of the main unit and tested together. Remote
controls marketed separately are only tested on radiated disturbances (Table 5).
5.3 Disturbance voltage at the mains terminals in the frequency
range 150 kHz to 30 MHz
5.3.1 General
The measured voltage includes narrow-band interference from the time-base, video circuits
and broad-band interference such as that produced by semiconductor rectifiers.
An artificial mains V-network is required to provide defined impedances at high frequencies
between the mains terminals of the equipment under test and reference earth. The network
also provides a suitable filter to isolate the equipment under test circuit from unwanted RF
voltages that may be present on the supply mains.
An artificial mains network according to CISPR 16-1-2 shall be used, which is suitable for
measuring the disturbance voltage between each mains terminal of the equipment under test
and the reference earth in the frequency range 0,15 MHz to 30 MHz (see also Figures 3 and 4).
Disturbance voltage measurements should be carried out in a screened room as depicted in
Figures 5 and 6.
NOTE Floor-standing equipment should be placed directly on the floor. If the cabinet of the equipment under test
is of conducting material and not provided with insulating legs or wheels, the points of contact should be separated
from the metallic ground-plane by insulating material of up to 12 mm thickness.
5.3.2 Television receivers
The television receiver shall be tuned to a standard test signal as defined in 5.2. A small pick-
up antenna (see Figures 5 and 6) is connected to the receiver for this purpose. If the receiver
is provided with a built-in antenna, this one shall be used (the pick-up antenna shall be
disconnected).
CISPR 13 © IEC:2009 – 17 –
In case of monitor TV, a video signal generator producing the standard television signal as
defined in 5.2 shall be connected to the video input connector of the monitor via an isolation
transformer.
NOTE 1 The isolation may be provided by an isolation transformer with common impedance to earth of 75 Ω for
the frequency range 0,15 MHz to 30 MHz. Alternatively, the video signal could be applied in series with toroidal RF
chokes (one in each conductor) of 60 μH impedance, connected by very short leads to the video input connector.
The input signal shall be sufficiently strong to give a noise-free picture.
The controls of the equipment under test for contrast, brightness and colour saturation, shall be
set to produce a normal picture.
This is obtained with the following luminance values:
– black part of the test pattern:  2 cd/m ;
– magenta part of the test pattern: 30 cd/m ;
– white part of the test pattern: 80 cd/m .
NOTE 2 The luminance of the magenta part of the test pattern should be set to 30 cd/m . If this level cannot be
reached, the luminance should be set to the maximum possible. If a value different from 30 cd/m is used, it should
be stated together
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