CISPR 16-2-3:2016/AMD2:2023

Amendment 2 - Specification for radio disturbance and immunity measuring apparatus and methods - Part 2-3: Methods of measurement of disturbances and immunity - Radiated disturbance measurements

Amendement 2 - Spécifications des méthodes et des appareils de mesure des perturbations radioélectriques et de l’immunité aux perturbations radioélectriques - Partie 2-3: Méthodes de mesure des perturbations et de l’immunité - Mesurages des perturbations rayonnées

General Information

• Status: Published
• Publication Date: 13-Jun-2023
• ICS: 33.100.10 - Emission
• ICS: 33.100.20 - Immunity
• Technical Committee: CIS/A - Radio-interference measurements and statistical methods
• Current Stage: PPUB - Publication issued
• Start Date: 14-Jun-2023
• Completion Date: 07-Jul-2023

Relations

• Amends: 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
• Effective Date: 05-Sep-2023

Standards Content (Sample)

CISPR 16-2-3 ®
Edition 4.0 2023-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE

COMITÉ INTERNATIONAL SPÉCIAL DES PERTURBATIONS RADIOÉLECTRIQUES

BASIC EMC PUBLICATION
PUBLICATION FONDAMENTALE EN CEM
AMENDMENT 2
AMENDEMENT 2
Specification for radio disturbance and immunity measuring apparatus and
methods –
Part 2-3: Methods of measurement of disturbances and immunity – Radiated
disturbance measurements
Spécifications des méthodes et des appareils de mesure des perturbations
radioélectriques et de l’immunité aux perturbations radioélectriques –
Partie 2-3: Méthodes de mesure des perturbations et de l'immunité – Mesurages
des perturbations rayonnées
CISPR 16-2-3:2016-09/AMD2:2023-06(en-fr)

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CISPR 16-2-3 ®
Edition 4.0 2023-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE

COMITÉ INTERNATIONAL SPÉCIAL DES PERTURBATIONS RADIOÉLECTRIQUES

BASIC EMC PUBLICATION
PUBLICATION FONDAMENTALE EN CEM

AMENDMENT 2
AMENDEMENT 2
Specification for radio disturbance and immunity measuring apparatus and

methods –
Part 2-3: Methods of measurement of disturbances and immunity – Radiated

disturbance measurements
Spécifications des méthodes et des appareils de mesure des perturbations

radioélectriques et de l’immunité aux perturbations radioélectriques –

Partie 2-3: Méthodes de mesure des perturbations et de l'immunité – Mesurages

des perturbations rayonnées
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.100.10; 33.100.20 ISBN 978-2-8322-7108-7

– 2 – CISPR 16-2-3:2016/AMD2:2023
© IEC 2023
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SPECIFICATION FOR RADIO DISTURBANCE AND
IMMUNITY MEASURING APPARATUS AND METHODS –

Part 2-3: Methods of measurement of disturbances and immunity –
Radiated disturbance measurements

AMENDMENT 2
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
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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 document may be the subject of patent
rights. IEC shall not be held responsible for identifying any or all such patent rights.
Amendment 2 to CISPR 16-2-3:2016 has been prepared by CISPR subcommittee A: Radio-
interference measurements and statistical methods.
The text of this Amendment is based on the following documents:
Draft Report on voting
CIS/A/1391/FDIS CIS/A/1397/RVD

Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this Amendment is English.

© IEC 2023
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/standardsdev/publications/.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under 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 document 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.

___________
2 Normative references
Replace the existing reference to CISPR 16-1-4:2010, modified by CISPR 16-2-
3:2016/AMD1:2019, with the following reference:
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 16-1-4:2019/AMD1:2020
CISPR 16-1-4:2019/AMD2:2023
3.1.9
common-mode absorption device
Replace the existing source, modified by CISPR 16-2-3:2016/AMD1:2019, with the following:
[SOURCE: CISPR 16-1-4:2019, 3.1.7]
Add, after the existing term 3.1.35, added by CISPR 16-2-3:2016/AMD1:2019, the following new
term and definition:
3.1.36
feed point of a shielded loop antenna
location of the slit in the shielding of a loop antenna
Note 1 to entry: The feed point of a shielded loop antenna is important for a correct set-up. The location of the feed
point has an influence on the site insertion loss between two magnetic field antennas [24], [25].

– 4 – CISPR 16-2-3:2016/AMD2:2023
© IEC 2023
7.1.1 General remarks and overview of test methods
Replace the existing third paragraph of this subclause, added by
CISPR 16-2-3:2016/AMD1:2019, by the following new third paragraph:
The magnetic field strength component of a disturbance is typically measured at frequencies
up to 30 MHz. Generally, in magnetic field strength measurements, the horizontal and vertical
components of the field at the position of the receiving antenna are measured when using the
distant single antenna procedure. If an LLAS is used, the three orthogonal magnetic dipole
moments of the EUT are measured.
Delete the existing NOTE 2 of this subclause, added by CISPR 16-2-3:2016/AMD1:2019.
7.1.2.1 Frequency range 9 kHz to 30 MHz
Delete the existing NOTE from under b), added by CISPR 16-2-3:2016/AMD1:2019.
7.3.1 Measurand
Replace, in the ninth paragraph of this subclause, the existing reference to Equation (35) of
CISPR 16-1-4:2010/AMD1:2012, modified by CISPR 16-2-3:2016/AMD1:2019, with a reference
to Equation (13) of CISPR 16-1-4:2019.
7.7.2.1 Measurement method
Replace, in the second paragraph of this subclause, the existing reference to 4.3.2 of
CISPR 16-1-4:2010, modified by CISPR 16-2-3:2016/AMD1:2019, with a reference to 4.3.2 of
CISPR 16-1-4:2019.
Add, after the existing subclause 7.10, the following new subclause:
7.11 Open-area test site or semi-anechoic chamber measurements (9 kHz to 30 MHz)
7.11.1 Measurand
The quantity to be measured is the maximum magnetic field strength emitted by the EUT, at
each of the three orthogonal directions X, Y and Z as shown in Figure 25 and Figure 26 (see
7.11.3), with the reference point of the receive antenna set at 1,3 m above the ground plane, at
the horizontal measurement distance from the EUT as specified in the applicable product
standard, over all angles in the azimuth plane. This quantity shall be determined with the
following provisions:
a) the frequency range of interest is 9 kHz to 30 MHz;
b) the quantity shall be expressed in dB(μA/m);
c) a SAC/OATS measurement site shall be used that complies with the applicable validation
requirements in CISPR 16-1-4;
d) a measuring receiver compliant with CISPR 16-1-1, and a loop antenna compliant with
CISPR 16-1-4, shall be used;
e) the measurement distance may be 3 m, 5 m, or 10 m, and should be used with the restriction
given in Table 10 (see 7.1.2.1);
f) the measurement distance is the horizontal projection to the ground plane of the distance
between the boundary of the EUT and the antenna reference point;
g) the reference point of the loop antenna shall be the centre of the loop;
h) the three loop antenna orientations shall be in accordance with the following:

© IEC 2023
X – the plane of the loop antenna is perpendicular to the ground plane and perpendicular to
the measurement axis (line connecting the projection of the reference point of the loop
antenna to the ground plane with the centre of the turntable);
Y – the plane of the loop antenna is perpendicular to the ground plane and coplanar with
the measurement axis;
Z – the plane of the loop antenna is parallel to the ground plane.
i) the EUT is configured and operated in accordance with CISPR specifications;
j) magnetic field antenna factors (see 3.1.2.5 in CISPR 16-1-6:2014 [2]) shall be used.
NOTE Some standards allow measurements at 30 m distance; however, this distance is not specified because 30 m
test sites are rarely available.
The measurand H is derived from the maximum voltage reading V by using the magnetic field
r
antenna factor F and Equation (23):
aH
(23)
H=V +A +F
r c aH
where
H is the magnetic field strength in dB(μA/m) as in the measurand description;
V is the maximum received voltage in dB(μV) as per the provisions in the measurand
r
description;
A is the loss in dB of the cable between the loop antenna and the measuring receiver;
c
−1 −1
F
is the magnetic field antenna factor of the loop antenna in dB(Ω m ).
aH
7.11.2 Test site requirements
The test site shall conform with the specifications for 9 kHz to 30 MHz in CISPR 16-1-4 with
regard to its physical and electrical properties, and for its site validation.
7.11.3 General measurement method
The concept of the set-up for radiated disturbance measurements made at an OATS or in a
SAC is shown in Figure 25 for table-top EUTs and in Figure 26 for floor-standing EUTs.
The EUT is installed at the specified height above the ground plane and operated normally , in
accordance with 6.4. The loop antenna is positioned at the specified measurement distance
and height above the ground plane.
The feed point of the loop antenna shall be set as shown in Figure 27. The figure shows two
alternative locations of the feed point, either one of which is applicable for the measurement.
However, for practical reasons the upper location is preferred for X and Y orientations [24], [25].
For each loop antenna orientation, the EUT is rotated in the horizontal plane to determine the
maximum level at each emission frequency.
If the cables have an influence on the measurement result, they should be equipped with ferrite
cores. It is recommended that ferrites with a minimum impedance of 50 Ω at 25 MHz are placed
on the loop antenna cables every 20 cm along their entire length.

– 6 – CISPR 16-2-3:2016/AMD2:2023
© IEC 2023
Dimensions in metres
Figure 25 – Concept of magnetic field strength measurement
set-up at an OATS or in a SAC for table-top EUT
Dimensions in metres
Figure 26 – Concept of magnetic field strength measurement
set-up at an OATS or in a SAC for floor-standing EUT

© IEC 2023
a) H lateral view
x
b) H lateral view
y
c) H top view
z
Figure 27 – Feed point location
7.11.4 Measurement distance and EUT dimensions
The measurement distance is the horizontal projection to the ground plane of the distance
between the boundary of the EUT (see Figure 8) and the antenna reference point.
If limits are defined at a distance greater than 10 m (e.g. 30 m), the results shall be extrapolated
using the procedures specified in the applicable product standard. In case such procedures are
not specified in the applicable product standard, the extrapolation procedure in 7.7.2.2 may be
used instead. The extrapolation process shall be described in the test report.
NOTE Due to the fact that measurements in this frequency range are always performed in the near field of the
radiating source, the extrapolation does not follow the simple inverse distance law.
The EUT dimension should not exceed the maximum EUT volume in Table 10 (see 7.1.2.1).
7.11.5 Antenna height
For magnetic field strength measurements, the reference point of the loop antenna shall be set
at a height of 1,3 m above the ground plane. This height applies for all antenna orientations X,
Y, and Z.
– 8 – CISPR 16-2-3:2016/AMD2:2023
© IEC 2023
7.11.6 Product standard specification details
7.11.6.1 General
In addition to specifying the detailed measurement method and the disturbance parameters to
be measured, product standards shall include other relevant details as outlined in the following
subclauses.
7.11.6.2 Test environment
The influence of the test environment shall be considered so as to ensure correct functioning
of the EUT. Important parameters in the physical environment shall be specified, e.g.
temperature and humidity.
The electromagnetic environment needs special consideration to ensure accurate disturbance
measurements. The ambient radio noise levels measured at the test site with the EUT de-
energized should be at least 6 dB below the limit. It is recognized that this margin cannot always
be realized at all frequencies. However, when the measured levels of ambient radio noise plus
EUT emissions are not above the limit, the EUT shall be considered to be in compliance with
the limit. See 6.2.2 and Annex A for further guidance about ambient levels and resulting
measurement errors.
If the ambient field strength level at frequencies within the specified measurement ranges
exceeds the limit(s), the following alternatives may be used:
a) Perform measurements at a closer distance (either 3 m or 5 m instead of 10 m; or 3 m
instead of 5 m) and extrapolate results to the distance at which the limit is specified. The
extrapolation formula shall be as recommended by the applicable product standard or it
shall be verified by measurements at no less than three different distances. This alternative
does not apply if the specified measurement distance is 3 m;
b) Compare the amplitude of the EUT disturbance at the frequency under investigation with
the amplitude of the disturbance of a related or unrelated nearby frequency, in an alternative
shielded room or absorber-lined shielded room which does not need to be a COMTS. The
amplitude of the EUT disturbance at the frequency under investigation can be estimated by
measuring the amplitude of the adjacent frequency disturbance and making a comparison;
c) Use a narrower measuring receiver bandwidth for narrowband disturbances from the EUT
occurring near an RF ambient when both are within the standard bandwidth, see A.4.
7.11.6.3 EUT operating conditions and arrangement
The EUT operating conditions and arrangement are detailed in 6.4.
For table-top EUTs the table height shall be 0,8 m. Floor-standing EUTs shall be separated
from metallic contact with the ground plane by up to 15 cm of insulation.
7.11.7 Measurement uncertainty for OATS and SAC
General and basic considerations about uncertainties in standardized EMC tests are given in
CISPR 16-4-1. Measurement instrumentation uncertainty aspects specific to results of radiated
disturbance measurements at an OATS or in a SAC in the frequency range 9 kHz to 30 MHz
are given in CISPR 16-4-2.
7.11.8 Field strength
...