IEC 61000-6-8:2020

Electromagnetic compatibility (EMC) - Part 6-8: Generic standards - Emission standard for professional equipment in commercial and light-industrial locations

IEC 61000-6-8: 2020 is a generic EMC emission standard and is applicable only if no relevant dedicated product or product family EMC emission standard has been published. This part of IEC 61000 for emission requirements applies to electrical and electronic equipment intended for use in commercial and light-industrial (see 3.1.3) locations. This document applies to equipment that satisfy the following restrictions of use:
is defined as professional equipment (see 3.1.13),
is professionally installed and maintained (see 3.1.14 and Clause 6),
is not intended to be used in residential locations (see 3.1.16).
IEC 61000-6-3 applies to electrical and electronic equipment intended for use at commercial and light-industrial locations that do not satisfy these restrictions. The intention is that all equipment used in the residential, commercial and light-industrial environments are covered by IEC 61000-6-3 or IEC 61000-6-8. If there is any doubt, the requirements in IEC 61000-6-3 apply. Emission requirements within the frequency range 0 Hz to 400 GHz are covered. The conducted and radiated emission requirements in the frequency range up to 400 GHz are considered essential and have been selected to provide an adequate level of protection of radio reception in the defined electromagnetic environment. Not all disturbance phenomena have been included for testing purposes but only those considered relevant for the equipment intended to operate within the locations included within this document. The emission requirements in this document are not intended to be applicable to the intentional transmissions and their harmonics from a radio transmitter as defined by the ITU.
NOTE 1 Safety considerations are not covered by this document.
NOTE 2 In special cases, situations will arise where the levels specified in this document will not offer adequate protection; for example where a sensitive receiver is used in close proximity to an equipment. In these instances, employ special mitigation measures to reduce any impact.
NOTE 3 Disturbances generated in fault conditions of equipment are not covered by this document.
NOTE 4 Equipment which complies with IEC 61000-6-3 are suitable for use within these defined locations.

Compatibilité électromagnétique (CEM) - Partie 6-8: Normes génériques - Norme d’émission pour les matériels professionnels utilisés dans des environnements commerciaux et de l’industrie légère

IEC 61000-6-8: 2020 est une norme d'émissions CEM générique et n'est applicable que si aucune norme d'émissions CEM de produit ou de famille de produits dédiée n'a été publiée. La présente partie de l’IEC 61000 concernant les exigences d’émission s'applique aux matériels électriques et électroniques destinés à être utilisés dans des environnements commerciaux et de l'industrie légère (voir 3.1.3). Le présent document s’applique aux matériels qui satisfont aux restrictions d’utilisation suivantes:
qui sont définis comme matériels professionnels (voir 3.1.13),
qui sont installés et maintenus par des professionnels (voir 3.1.14 et Article 6),
qui ne sont pas destinés à être utilisés dans des environnements résidentiels (voir 3.1.16).
L‘IEC 61000-6-3 s’applique aux matériels électriques et électroniques destinés à être utilisés dans des environnements commerciaux et de l'industrie légère qui ne satisfont pas à ces restrictions.
L’objectif est que tous les matériels utilisés dans les environnements résidentiels, commerciaux et de l’industrie légère soient couverts par l’IEC 61000-6-3 ou l’IEC 61000-6-8. En cas de doute, les exigences spécifiées dans l’IEC 61000-6-3 s'appliquent. Les exigences d’émission dans la plage de fréquences de 0 Hz à 400 GHz sont couvertes. Les exigences d’émissions conduites et rayonnées dans la plage de fréquences jusqu'à 400 GHz sont considérées comme essentielles et ont été choisies de manière à assurer un niveau adéquat de protection de la réception radioélectrique dans l’environnement électromagnétique défini. Tous les phénomènes perturbateurs n'ont pas été inclus pour les besoins de l'essai. Seuls l'ont été ceux considérés comme pertinents pour les matériels destinés à fonctionner dans les environnements couverts par le présent document. Les exigences d’émission spécifiées dans le présent document ne sont pas destinées à s’appliquer aux transmissions intentionnelles et à leurs harmoniques provenant d’un émetteur tel que défini par l'UIT.
NOTE 1 Ce document ne traite pas des aspects de sécurité.
NOTE 2 Dans des cas particuliers, des situations apparaissent dans lesquelles les niveaux spécifiés dans le présent document n’offrent pas la protection adéquate, lorsqu’un récepteur sensible est utilisé très proche d’un matériel par exemple. Dans de tels cas, utiliser des mesures d’atténuation particulières afin de réduire tout effet éventuel.
NOTE 3 Les perturbations générées dans les conditions de défaut du matériel ne sont pas couvertes par le présent document.
NOTE 4 Les matériels conformes à l’IEC 61000-6-3 conviennent à une utilisation dans ces environnements définis.

General Information

• Status: Published
• Publication Date: 29-Jul-2020
• ICS: 33.100.10 - Emission
• Technical Committee: CIS/H - Limits for the protection of radio services
• Current Stage: PPUB - Publication issued
• Start Date: 30-Jul-2020
• Completion Date: 20-Aug-2020

Standards Content (Sample)

IEC 61000-6-8 ®
Edition 1.0 2020-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE

COMITÉ INTERNATIONAL SPÉCIAL DES PERTURBATIONS RADIOÉLECTRIQUES

GENERIC EMC STANDARD
NORME GÉNÉRIQUE EN CEM
Electromagnetic compatibility (EMC) –
Part 6-8: Generic standards – Emission standard for professional equipment in
commercial and light-industrial locations

Compatibilité électromagnétique (CEM) –
Partie 6-8: Normes génériques – Norme d’émission pour les matériels
professionnels utilisés dans des environnements commerciaux et
de l’industrie légère
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IEC 61000-6-8 ®
Edition 1.0 2020-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE

COMITÉ INTERNATIONAL SPÉCIAL DES PERTURBATIONS RADIOÉLECTRIQUES

GENERIC EMC STANDARD
NORME GÉNÉRIQUE EN CEM
Electromagnetic compatibility (EMC) –

Part 6-8: Generic standards – Emission standard for professional equipment in

commercial and light-industrial locations

Compatibilité électromagnétique (CEM) –

Partie 6-8: Normes génériques – Norme d’émission pour les matériels

professionnels utilisés dans des environnements commerciaux et

de l’industrie légère
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.100.10 ISBN 978-2-8322-8662-3

– 2 – IEC 61000-6-8:2020 © IEC 2020
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms, definitions and abbreviated terms . 9
3.1 Terms and definitions . 9
3.2 Abbreviated terms . 12
4 Classification of equipment . 13
5 Measurements and conditions during testing . 13
6 Documentation for the user . 14
7 Applicability . 15
8 Emission requirements . 15
9 Measurement uncertainty . 15
10 Compliance with this document . 15
11 Emission test requirements . 16
Annex A (informative) Examples of emission classification of equipment and mapping
to the immunity standard . 22
Annex B (normative) Testing of DC powered systems . 23
Annex C (informative) Rationale for alternative test levels at the DC power port . 25
C.1 General . 25
C.2 Necessity of alternative test methods in generic standards . 25
C.3 Limit justification in table clause 5.2 . 25
C.3.1 Proportional relation approach . 25
C.3.2 Current-to-voltage conversion approach . 26
C.3.3 Setting the final limit . 27
Annex D (informative) Special measures and mitigation techniques . 28
Bibliography . 30

Figure 1 – Example of ports . 11
Figure C.1 – Equivalent circuit of test set-up for measurement of disturbance voltages . 26
Figure C.2 – Limit proposals of the two different approach and the final limit
compromise . 27

Table 1 – Test arrangements of EUT . 14
Table 2 – Required highest frequency for radiated measurement . 16
Table 3 – Requirements for radiated emissions – Enclosure port . 18
Table 4 – Requirements for conducted emissions – Low voltage AC mains port . 19
Table 5 – Requirements for conducted emissions – DC power port . 20
Table 6 – Requirements for conducted emissions, other wires ports . 21
Table A.1 – Examples of emission classification of equipment to immunity standard
against product type and its intended environment . 22
Table B.1 – Conducted testing requirements of DC powered equipment. 24
Table B.2 – Conditional requirements for the start frequency of test at DC power ports
for tests defined in table clause B1.4 to B1.7 . 24

Table C.1 – DC power port, terminal disturbance voltage limits for class A GCPCs,
measured on a test site, proportion relation approach . 26
Table C.2 – DC power port, terminal disturbance voltage limits for class A GCPCs,

measured on a test site, current-to-voltage conversion approach . 27
Table C.3 – DC power port, terminal disturbance voltage limits for class A GCPCs,
with rated throughput ≤ 20 kVA . 27
Table D.1 – Examples of special measures and mitigation techniques, for the
enclosure port . 28
Table D.2 – Examples of special measures and mitigation techniques, for the various

wired ports . 29

– 4 – IEC 61000-6-8:2020 © IEC 2020
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTROMAGNETIC COMPATIBILITY (EMC) –

Part 6-8: Generic standards – Emission standard for professional
equipment in commercial and light-industrial locations

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 this end and
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preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
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3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
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any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
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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 IEC 61000-6-8 has been prepared by CISPR subcommittee H: Limits for
the protection of radio services.
The text of this document is based on the following documents:
CDV Report on voting
CIS/H/401/CDV CIS/H/414/RVC
Full information on the voting for the approval of this document can be found in the report on
voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts in the IEC 61000 series, published under the general title Electromagnetic
compatibility (EMC), can be found on the IEC website.

The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct understanding
of its contents. Users should therefore print this document using a colour printer.

– 6 – IEC 61000-6-8:2020 © IEC 2020
INTRODUCTION
IEC 61000 is published in separate parts according to the following structure:
Part 1: General
General considerations (introduction, fundamental principles)
Definitions, terminology
Part 2: Environment
Description of the environment
Classification of the environment
Compatibility levels
Part 3: Limits
Emission limits
Immunity limits (insofar as they do not fall under the responsibility of the product committees)
Part 4: Testing and measurement techniques
Measurement techniques
Testing techniques
Part 5: Installation and mitigation guidelines
Installation guidelines
Mitigation methods and devices
Part 6: Generic standards
Part 9: Miscellaneous
Each part is further subdivided into several parts published either as International Standards or
technical reports/specifications, some of which have already been published as sections.
Others will be published with the part number followed by a dash and a second number
identifying the subdivision (example: IEC 61000-6-1).

ELECTROMAGNETIC COMPATIBILITY (EMC) –

Part 6-8: Generic standards – Emission standard for professional
equipment in commercial and light-industrial locations

1 Scope
This generic EMC emission standard is applicable only if no relevant dedicated product or
product family EMC emission standard has been published.
This part of IEC 61000 for emission requirements applies to electrical and electronic equipment
intended for use in commercial and light-industrial (see 3.1.3) locations. This document applies
to equipment that satisfy the following restrictions of use:
• is defined as professional equipment (see 3.1.13),
• is professionally installed and maintained (see 3.1.14 and Clause 6),
• is not intended to be used in residential locations (see 3.1.16).
IEC 61000-6-3 applies to electrical and electronic equipment intended for use at commercial
and light-industrial locations that do not satisfy these restrictions.
The intention is that all equipment used in the residential, commercial and light-industrial
environments are covered by IEC 61000-6-3 or IEC 61000-6-8. If there is any doubt, the
requirements in IEC 61000-6-3 apply.
Emission requirements within the frequency range 0 Hz to 400 GHz are covered.
The conducted and radiated emission requirements in the frequency range up to 400 GHz are
considered essential and have been selected to provide an adequate level of protection of radio
reception in the defined electromagnetic environment. Not all disturbance phenomena have
been included for testing purposes but only those considered relevant for the equipment
intended to operate within the locations included within this document.
The emission requirements in this document are not intended to be applicable to the intentional
transmissions and their harmonics from a radio transmitter as defined by the ITU.
NOTE 1 Safety considerations are not covered by this document.
NOTE 2 In special cases, situations will arise where the levels specified in this document will not offer adequate
protection; for example where a sensitive receiver is used in close proximity to an equipment. In these instances,
employ special mitigation measures to reduce any impact.
NOTE 3 Disturbances generated in fault conditions of equipment are not covered by this document.
NOTE 4 Equipment which complies with IEC 61000-6-3 are suitable for use within these defined locations.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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.
IEC 61000-3-2:2018, Electromagnetic compatibility (EMC) – Part 3-2: Limits – Limits for
harmonic current emissions (equipment input current ≤ 16 A per phase)

– 8 – IEC 61000-6-8:2020 © IEC 2020
IEC 61000-3-3:2013, 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 61000-3-3:2013/AMD1:2017
IEC 61000-3-11:2017, 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 61000-3-12:2011, 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 61000-4-20:2010, Electromagnetic compatibility (EMC) – Part 4-20: Testing and
measurement techniques – Emission and immunity testing in transverse electromagnetic (TEM)
waveguide
IEC 61000-6-3, Electromagnetic compatibility (EMC) – Part 6-3: Generic standards – Emission
standard for equipment in residential environments
CISPR 16-1-1:2019, Specification for radio disturbance and immunity measuring apparatus and
methods – Part 1-1: Radio disturbance and immunity measuring apparatus – Measuring
apparatus
CISPR 16-1-2:2014, Specification for radio disturbance and immunity measuring apparatus and
methods – Part 1-2: Radio disturbance and immunity measuring apparatus – Coupling devices
for conducted disturbance measurements
CISPR 16-1-2:2014/AMD1:2017
CISPR 16-1-4:2019, Specification for radio disturbance and immunity measuring apparatus and
methods – Part 1-4: Radio disturbance and immunity measuring apparatus – Antennas and test
sites for radiated disturbance measurements
CISPR 16-1-5:2014, Specification for radio disturbance and immunity measuring apparatus and
methods – Part 1-5: Radio disturbance and immunity measuring apparatus – Antenna
calibration sites and reference test sites for 5 MHz to 18 GHz
CISPR 16-1-5:2014/AMD1:2016
CISPR 16-1-6:2014, Specification for radio disturbance and immunity measuring apparatus and
methods – Part 1-6: Radio disturbance and immunity measuring apparatus – EMC antenna
calibration
CISPR 16-1-6:2014/AMD1:2017
CISPR 16-2-1:2014, Specification for radio disturbance and immunity measuring apparatus and
methods – Part 2-1: Methods of measurement of disturbances and immunity – Conducted
disturbance measurements
CISPR 16-2-1:2014/AMD1:2017
CISPR 16-2-3:2016, Specification for radio disturbance and immunity measuring apparatus and
methods – Part 2-3: Methods of measurement of disturbances and immunity – Radiated
disturbance measurements
___________
1 Under preparation. Stage at the time of publication: IEC DECPUB 61000-6-3:2020.

CISPR 16-4-2:2011, Specification for radio disturbance and immunity measuring apparatus and
methods – Part 4-2: Uncertainties, statistics and limit modelling – Measurement instrumentation
uncertainty
CISPR 16-4-2:2011/AMD1:2014
CISPR 16-4-2:2011/AMD2:2018
CISPR 32:2015, Electromagnetic compatibility of multimedia equipment – Emission
requirements
3 Terms, definitions and abbreviated terms
3.1 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1.1
antenna port
port, other than a broadcast receiver tuner port (3.1.2), for connection of an antenna used for
intentional transmission and/or reception of radiated RF energy
3.1.2
broadcast receiver tuner port
port intended for the reception of a modulated RF signal carrying terrestrial, satellite and/or
cable transmissions of audio and/or video broadcast and similar services
Note 1 to entry: This port may be connected to an antenna, a cable distribution system, a VCR or similar device.
3.1.3
commercial and light-industrial location
location which are not residential in accordance with 3.1.16, where the mains supply is directly
connected to the low-voltage public network or connected to a dedicated DC source which is
intended to interface between the equipment and the low-voltage public mains network.
Note 1 to entry: Examples of commercial or light-industrial locations are:
• retail outlets,
• business premises,
• areas of public entertainment,
• places of worship,
• outdoor locations,
• general public locations,
• hospitals, educational institutions,
• public traffic area, railway stations, and public areas of an airport,
• specific common area of buildings, such as basements, control rooms, electrical service areas,
• workshops, laboratories, service centres.
Note 2 to entry: Within these locations it is expected to operate a radio receiver within a distance of 30 m from the
equipment. The risk of interference will be minimized by following the instructions defined in Clause 5.
3.1.4
DC distribution network
local supply network in the infrastructure of a site or building intended for use by one or more
different types of equipment and providing power independent of the public mains network
Note 1 to entry: Connection to a remote local battery is not regarded as a DC distribution network, if such a link
comprises only power supply for a single piece of equipment.

– 10 – IEC 61000-6-8:2020 © IEC 2020
3.1.5
DC power port
port used to connect to a low voltage DC power generating system, energy storage or DC
distribution network to power the equipment
Note 1 to entry: See Annex B.
3.1.6
enclosure port
physical boundary of the equipment which electromagnetic fields may radiate through or
impinge on
3.1.7
highest internal frequency
F
x
highest fundamental frequency generated or used within the EUT, or the highest frequency at
which it operates
3.1.8
low voltage
LV
voltage having a value below a conventionally adopted limit
Note 1 to entry: For the distribution of AC electric power, the upper limit is generally accepted to be 1 000 V. For
the distribution of DC electric power, the upper limit is generally accepted to be 1 500 V.
3.1.9
low voltage AC mains port
port used to connect to the low voltage AC mains supply network to power the equipment
Note 1 to entry: Equipment with a DC power port is considered low voltage AC mains powered if it is powered from
an AC/DC power converter.
Note 2 to entry: The low voltage AC mains supply could be public or non-public
3.1.10
optical fibre port
port at which an optical fibre is connected to an equipment
3.1.11
port
physical interface of the specified equipment with the external electromagnetic environment
Note 1 to entry: See Figure 1.
Note 2 to entry: Other wired port shown in Figure 1 is referenced in Table 6.

Figure 1 – Example of ports
3.1.12
power port
port for the connection of the equipment to its primary electrical power supply
3.1.13
professional equipment
equipment for use in trades, professions, or industries which is not intended for sale to the
general public
3.1.14
professional installation
installation and maintenance of equipment by professional(s) with sufficient knowledge to
employ EMC mitigation measures according to the installation instructions
3.1.15
public mains network
electricity lines to which all categories of consumers have access and which are operated by a
supply or distribution undertaking for the purpose of supplying electrical energy
3.1.16
residential location
area of land designated for domestic dwellings where the mains power within these locations is
directly connected to the low-voltage public mains network
Note 1 to entry: Examples of residential locations are: houses, apartments, farm buildings housing people.
Note 2 to entry: A dwelling can be a single building, separate building or a separate section of a larger building.
Note 3 to entry: Within these locations it is expected to operate a radio receiver within a distance of 10 m from the
equipment.
Note 4 to entry: Domestic dwellings are places for one or more people to live.
3.1.17
small equipment
equipment, either positioned on a table top or standing on the floor which, including its cables
fits in a cylindrical test volume of 1,2 m in diameter and 1,5 m above the ground plane

– 12 – IEC 61000-6-8:2020 © IEC 2020
Note 1 to entry: These dimensions are currently under discussion in CISPR.
3.1.18
wired network port
port for the connection of communication intended to interconnect widely dispersed systems by
direct connection to a single-user or multi-user network
Note 1 to entry: Examples of communication through the network include voice, data and signalling transfers.
Note 2 to entry: Examples of wired networks include CATV, PSTN, ISDN, xDSL, LAN and similar.
Note 3 to entry: These ports may support screened or unscreened cables and may also carry AC or DC power
where this is an integral part of the telecommunication specification.
Note 4 to entry: A port generally intended for interconnection of components of a system under test (e.g. RS-232
(defined in ITU-T V.28), RS-485 (defined in ITU-T V.11), field buses in the scope of IEC 61158-1, IEEE Standard
1284 (parallel printer), Universal Serial Bus (USB), IEEE Standard 1394 (“Fire Wire”), etc.) and used in accordance
with its functional specifications (e.g. for the maximum length of cable connected to it), is not considered to be a
wired network port.
Note 5 to entry: In many product standards, this port was defined as a telecommunications or network port.
3.2 Abbreviated terms
AAN Asymmetric Artificial Network
AC Alternating Current
V-AMN Artificial Mains V-Network
V-AN Artificial V-Network
CAT Category
CATV Cable TV network
CM Common Mode
DC Direct Current
DSL Digital Subscriber Line
EMI ElectroMagnetic Interference
EUT Equipment Under Test
FAR Fully Anechoic Room
FSOATS Free Space Open Area Test Site
GCPC Grid Connected Power Converter
IEC International Electrotechnical Commission
IEEE Institute of Electrical and Electronics Engineers
ISDN Integrated Services Digital Network
ISM Industrial, Scientific and Medical
ITE Information Technology Equipment
LAN Local Area Network
MME Multi Media Equipment
OATS Open Area Test Site
RF Radio Frequency
PSTN Public Switched Telephone Network
SAC Semi Anechoic Chamber
TEM Transverse Electromagnetic Mode
TN-C Grounding system defined in IEC 60364-1
TV Television
UPS Uninterruptible Power Supply

USB Universal Serial Bus
VCR Video Cassette Recorder
xDSL Generic term for all types of DSL technology
Δ-AN Artificial Δ-Network (‘Δ’ is pronounced ‘delta’)
4 Classification of equipment
This document applies to equipment intended to be used within commercial and light-industrial
(see 3.1.3) locations that satisfies all the restrictions of use defined within the scope (see
Clause 1). For this equipment, the requirements of Table 3 to Table 6 apply.
These requirements are not intended to offer adequate protection to radio services and
applications within the residential environment.
NOTE Examples of the emission classification of equipment and mapping to the immunity standard is given in
Annex A.
5 Measurements and conditions during testing
Measurements shall be conducted in a defined and reproducible manner.
The measurements may be performed in any order.
The description of the measurement, the measurement instrumentation, the measurement
methods and the measurement set-up to be used are given in the standards, which are referred
to in Table 3 to Table 6. The contents of these standards are not repeated here, however
modifications or additional information needed for the practical application of the measurements
are given in this document.
The EUT shall be tested in the operating mode producing the largest emission in the frequency
band being assessed, consistent with intended use. The configuration of the test sample shall
be varied to achieve maximum emission consistent with typical use and installation practice.
NOTE Pre-testing can be used to reduce test time.
If the EUT is part of a system, or can be connected to associated equipment, the EUT shall be
tested while connected to the minimum representative configuration of associated apparatus
necessary to exercise the ports in a similar manner to that described in CISPR 32. If the EUT
has a large number of similar ports or ports with many similar connections, a sufficient number
shall be selected to simulate actual operating conditions and to ensure that all the different
types of termination are covered.
In cases where the equipment instructions requires external filtering, shielding devices or
similar measures, these measures shall be applied during the measurements.
The EUT shall be arranged in accordance with the requirements of Table 1.

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Table 1 – Test arrangements of EUT
Intended operational Test arrangement Remarks
arrangement(s) of EUT
Table-top only Table-top
Floor-standing only Floor-standing 2
See table clause 3.3 for testing in a
FAR
Can be floor-standing or table-top Table-top
Rack mounted In a rack or table-top
Other, for example wall mounted, Table-top With normal orientation
ceiling mounted, handheld, body
If the equipment is designed to be
worn
mounted on a ceiling, the downward-
facing portion of the EUT may be
oriented facing upward.
If a physical hazard would be caused by testing the device on a table-top, then it may be tested as floor standing
and the test report shall document the decision and justification.

The configuration and mode of operation during the measurements shall be documented in the
test report.
The measurements shall be carried out at one single set of parameters within the operating
ranges of temperature, humidity and atmospheric pressure specified for the product and at the
rated supply voltage, unless otherwise indicated in the basic standard. The relevant conditions
shall be recorded in the test report.
Where applicable, additional information on EUT configuration can be found in the CISPR 16-2-
1, CISPR 16-2-3 or CISPR 32 as referenced in Table 3 to Table 6.
6 Documentation for the user
In principle, the equipment instructions for use should provide information on mitigation
measures that can be used to reduce emissions from the installed equipment, to similar levels
of radio protection as defined in IEC 61000-6-3 but at the boundary of the premises. This also
includes the low voltage AC power network.
NOTE 1 In this context, premises means a building together with its land and outbuildings occupied by a business.
For example, an apartment above a shop would not be contained within the premises.
NOTE 2 For guidance on in-situ measurements refer to 7.7 of CISPR 16-2-3:2016, 7.6 of CISPR 16-2-1:2014 and
CISPR 11.
The equipment instructions for use shall include the following:
• a statement that the equipment meets the requirements for commercial and light-industrial
(see 3.1.3) locations when professionally installed and maintained,
• if any special measures have to be taken to achieve compliance,
EXAMPLE 1 The instructions for use could require the use of shielded or special cables.
• any specific installation instructions to minimize emissions,
EXAMPLE 2 The instructions for use could define requirements for earthed arrangements or the installation of
blanking panels.
___________
In this document, table clauses are referenced using an x.y format, where x denotes the table and y denotes the
referenced clause by row within the table. For example table clause 3.1 is Table 3, clause (row) 1.

• the installation and any maintenance requires a professional (see 3.1.14) with relevant EMC
experience to install specific EMC mitigation measures defined in the user instructions;
examples of mitigation measurements are defined in Annex D.
• a notice stating:
The professional installer shall evaluate the EMC situation before installation, if the
equipment is installed closer than 30 m to a residential location.
• an additional notice stating:
Caution: This equipment is not intended for use in residential locations and will not
guarantee to provide adequate protection to radio reception in such locations
7 Applicability
The application of measurements for emission(s) depends on the particular equipment, its
configuration, its ports, its technology and its operating conditions.
Measurements shall be applied to the relevant ports of the equipment specified in Table 3 to
Table 6. Measurements shall only be carried out where the relevant ports exist.
All tests defined in Table 3 to Table 6 shall be considered by the test plan, however, where it
has been determined in the test plan, that one or more of the tests are not applicable, the
decision and justification not to perform such tests shall be recorded in the test report. See
examples.
EXAMPLE When considering a test plan for an EUT, which is always powered through a UPS, then conducted tests
on the low voltage AC mains port are not necessary.
8 Emission requirements
The requirements are given in Table 3 to Table 6.
9 Measurement uncertainty
Where guidance for the calculation of the instrumentation uncertainty of a measurement is
specified in CISPR 16-4-2, this shall be followed. For these measurements the determination
of compliance with the limits in this document shall take into consideration the measurement
instrumentation uncertainty in accordance with CISPR 16-4-2. Calculations to determine the
measurement result and any adjustment of the test result required when the test laboratory
uncertainty is larger than the value for U given in CISPR 16-4-2 shall be included in the test
cispr
report.
10 Compliance with this document
Where this document gives options for testing particular requirements with a choice of test
methods, compliance can be shown against any of the relevant test methods, using the
specified limits within the restrictions provided in the relevant table clauses. For example, floor
standing equipment shall be assessed against table clause 3.1, considering table clause 3.2 is
limited to small equipment and table clause 3.3 is limited to table top equipment.
In any situation where it is necessary to retest the equipment the test method originally chosen
shall be used in order to ensure consistency of the results.
The test report shall contain sufficient details to facilitate reproducibility of the measurements.

– 16 – IEC 61000-6-8:2020 © IEC 2020
Equipment which fulfills the requirements across the frequency ranges specified in Table 3 to
Table 6 in this document is deemed to fulfill the requirements in the entire frequency range up
to 400 GHz.
Measurements do not need to be performed at frequencies where no limits are specified.
11 Emission test requirements
The following shall be taken into account during the application of the measurements defined
in Table 3 to Table 6.
• At transitional frequencies, the lower limit applies.
• Where the limit value varies over a given frequency range, it changes linearly with respect
to the logarithm of the frequency.
• The test site shall be validated for the measurement distance chosen.
• Where the table clause defines more than one detector, then the measurements shall be
performed using both types of detector. Results obtained using a peak detector may be used
instead of the defined detectors.
• Where a different measurement distance is chosen, other than the reference distance
defined in the limits column of Table 3, the limits shall be offset based upon the following
formula:
new limit = defined limit – 20 log (measurement distance/reference distance)
The unit of metres shall be used for distance and dB(µV/m) for the limits.
With regard to each table clause, the measurements shall be performed at only one distance.
• For radiated emissions measurements, Table 2 shows the highest frequency up to which
measurements shall be performed based upon the value of F .
x
Table 2 – Required highest frequency for radiated measurement
Highest internal frequency Highest measured frequency
F
x
F ≤ 108 MHz 1 GHz
x
108 MHz < F ≤ 500 MHz 2 GHz
x
500 MHz < F ≤ 1 GHz 5 GHz
x
F > 1 GHz 5 × F up to a maximum of 6 GHz
x x
Where the highest internal frequency is not known, tests shall be performed up to
6 GHz.
NOTE F is defined in 3.1.7.
x
For all other measurements, the entire frequency range shall be measured.
• For emission measurements above 1 GHz, the peak detector limits shall not be applied to
disturbances produced by arcs or sparks that are high voltage breakdown events. Such
disturbances arise when devices contain or control mechanical switches that control current
in inductors, or when devices contain or control subsystems that create static electricity
(such as paper handling devices). The average limits apply to disturbances from arcs or
sparks, and both peak and average limits will apply to all other disturbances from such
devices.
• For radiated emission measurements using a FSOATS, OATS, FAR or SAC, the
measurement distance is the shortest horizontal distance between the vertical projections

of the calibration point of the receiving antenna and the boundary of the EUT, when typically
arranged and rotated through 360°.
For frequencies below 1 GHz, a maximum of 1,6 m of cabling shall be considered as part of
the EUT.
The boundary of the EUT is the smallest imaginary circular periphery around the most
compact arrangement of the EUT, using typical spacing, 7.3.1 in CISPR 16-2-3:2016.
Antennas shall be calibrated in free space conditions using facilities defined in CISPR 16‑1-
5:2014 and CISPR 16-1-5:2014/AMD 1:2016 whilst using the procedures defined in
CISPR 16-1-6:2014 and CISPR 16-1-6:2014/AMD1:2017.
• Where this document specifies the use of an average detector, the linear average detector
defined in Clause 6 of CISPR 16-1-1:2019 shall be used.
• With regard to c
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