CISPR 16-2-3:2010/AMD2:2014
(Amendment)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
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 des mesures des perturbations et de l'immunité - Mesures des perturbations rayonnées
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CISPR 16-2-3
®
Edition 3.0 2014-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
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 – Mesures
des perturbations rayonnées
CISPR 16-2-3:2010-04/AMD2:2014-02(en-fr)
---------------------- Page: 1 ----------------------
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CISPR 16-2-3
®
Edition 3.0 2014-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
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 – Mesures
des perturbations rayonnées
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX Q
ICS 33.100.10, 33.100.20 ISBN 978-2-8322-1444-2
Warning! Make sure that you obtained this publication from an authorized distributor.
Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 3 ----------------------
– 2 – CISPR 16-2-3:2010/AMD2:2014
© IEC 2014
FOREWORD
This amendment has been prepared by subcommittee A: Radio-interference measurements
and statistical methods, of IEC technical committee CISPR: International special committee
on radio interference.
The text of this amendment is based on the following documents:
FDIS Report on voting
CISPR/A/1054/FDIS CISPR/A/1063/RVD
Full information on the voting for the approval of this amendment can be found in the report
on voting indicated in the above table.
The committee has decided that the contents of this amendment and the base publication will
remain unchanged until the stability 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.
_____________
3 Terms and definitions
Replace the existing title by the following new title:
3 Terms, definitions and abbreviations
Add, after the existing definition 3.26, added by Amendment 1, the following new terms and
definitions:
3.27
highest internal frequency
highest frequency generated or used within the EUT or the highest frequency at which the
EUT operates or tunes
3.28
module
part of an EUT that provides a function and may contain radio-frequency sources
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CISPR16-2-3:2010/AMD2:2014 –3–
© IEC 2014
1
3.29 Abbreviations
The following abbreviations, not already provided in 3.1 through 3.28, are used in this
standard.
AM Amplitude modulation
APD Amplitude probability distribution
AV Average
BB Broadband
CW Continuous wave
FFT Fast-Fourier transform
FM Frequency modulation
IF Intermediate frequency
ISM Industrial, scientific or medical
LPDA Log-periodic dipole array
NB Narrowband
NSA Normalized site attenuation
PRF Pulse repetition frequency
RBW Resolution bandwidth
RF Radio frequency
RGP Reference ground plane
QP Quasi-peak
TEM Transverse electromagnetic
UFA Uniform field area
VBW Video bandwidth
6.2.2 Compliance (conformity assessment) testing
Replace, in the second existing paragraph of this subclause, “In the case of compliance
measurement according to a limit” by “When evaluating compliance with a limit”.
Replace the last existing sentence of the second paragraph by the following new sentence:
Further guidance on measurement of disturbances in the presence of ambient emissions is
provided in Annex A.
Delete the existing note of this subclause.
6.4 Operating conditions of the EUT
Replace the existing title by the following new title:
6.4 EUT arrangement and measurement conditions
1
At the next maintenance, when a new edition is published, terms and definitions will be placed in a new
subclause 3.1 and renumbered, and abbreviations will be re-located to a new subclause 3.2.
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– 4 – CISPR 16-2-3:2010/AMD2:2014
© IEC 2014
6.4.1 Normal load conditions
Replace the existing title and text of this subclause by the following new titles and new text:
6.4.1 General arrangement of the EUT
6.4.1.1 General
Where not specified in the product standard, the EUT shall be configured as described below.
The EUT shall be installed, arranged and operated in a manner consistent with typical
applications. Where the manufacturer has specified or recommended an installation practice,
that practice shall be used in the test arrangement, where possible. This arrangement shall be
typical of normal installation practice. Interface cables, loads, and devices shall be connected
to at least one of each type of interface port of the EUT and, where practical, each cable shall
be terminated in a device typical of actual usage.
Where there are multiple interface ports of the same type, additional interconnecting cables,
loads and devices may have to be added to the EUT depending upon the results of
preliminary tests. Connecting a cable or wire to just one of that type of port may be sufficient.
The actual number of additional cables or wires may be limited to the condition where the
addition of another cable or wire does not significantly affect the emission level, i.e. varies
less than 2 dB, provided that the EUT remains compliant. The rationale for the selection of the
configuration and loading of ports shall be included in the test report.
Interconnecting cables should be of the type and length specified in the individual equipment
requirements. If the length can be varied, the length shall be selected to produce maximum
disturbance.
If shielded or special cables are used during the tests to achieve compliance, then a note
shall be included in the instruction manual advising of the need to use such cables.
Excess lengths of cables shall be bundled at the approximate centre of the cable with the
bundles 30 cm to 40 cm in length. If it is impractical to do so because of cable bulk or
stiffness, the disposition of the excess cable shall be precisely noted in the test report.
The results of an evaluation of EUTs having one of each type of module can be applied to
configurations having more than one of each of those modules. This is permissible because it
has been found that disturbances from identical modules are generally not additive in practice.
However the 2 dB criteria defined in this clause shall be applied.
Any set of results shall be accompanied by a complete description of the cable and equipment
orientation so that results can be reproduced. If specific conditions of use are required to
meet the limits, those conditions shall be specified and documented; for example cable length,
cable type, shielding and grounding. These conditions shall be included in the instructions to
the user.
Equipment that is populated with multiple modules (drawer, plug-in card, board, etc.) shall be
tested with a mix and number representative of that used in a typical installation. The number
of additional boards or plug-in cards of the same type may be limited to the condition where
the addition of another board or plug-in card does not significantly affect the emission level,
i.e. varies less than 2 dB, provided that the EUT remains compliant. The rationale used for
selecting the number and type of modules shall be stated in the test report.
A system that consists of a number of separate units shall be configured to form a minimum
representative configuration. The number and mix of units included in the test configuration
shall be representative of that used in a typical installation. The rationale used for selecting
units shall be stated in the test report.
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CISPR16-2-3:2010/AMD2:2014 –5–
© IEC 2014
At least one module of each type shall be operative in each equipment evaluated in an EUT.
For a system EUT, at least one of each type of equipment that can be included in the possible
system configuration shall be included in the EUT.
The EUT position relative to the RGP shall be equivalent to that occurring in use. Therefore,
floor-standing equipment is placed on, but insulated from, a RGP, and tabletop equipment is
placed on a non-conductive table.
Equipment designed for wall-mounted or ceiling mounted operation shall be tested as tabletop
EUT. The orientation of the equipment shall be consistent with normal installation practice.
Combinations of the equipment types identified above shall also be arranged in a manner
consistent with normal installation practice. Equipment designed for both tabletop and floor
standing operation shall be tested as tabletop equipment unless the usual installation is floor
standing, then that arrangement shall be used.
The ends of signal cables attached to the EUT that are not connected to another unit or
auxiliary equipment shall be terminated using the correct terminating impedance defined in
the product standard.
Cables or other connections to associated equipment located outside the test area shall drape
to the floor, and then be routed to the place where they leave the test volume.
Auxiliary equipment shall be installed in accordance with normal installation practice. Where
this means that the auxiliary equipment is located on the test site, it shall be arranged using
the same conditions applicable for the EUT (e.g distance from ground plane and insulation
from the ground plane if floor standing, and layout of cabling).
6.4.1.2 Tabletop arrangement
Equipment intended for tabletop use shall be placed on a non-conductive table. The size of
the table will nominally be 1,5 m by 1,0 m, but may ultimately be dependent on the horizontal
dimensions of the EUT.
All units forming the system under test (including the EUT, connected peripherals and
auxiliary equipment or devices) shall be arranged according to normal use. Where not defined
in the normal use, a nominal 0,1 m separation distance between the neighbouring units shall
be defined for the test arrangement.
Intra-unit cables shall be draped over the back of the table. If a cable hangs closer than 0,4 m
to the horizontal ground plane (or floor), the excess shall be folded at the cable centre into a
bundle no longer than 0,4 m, such that the bundle is at least 0,4 m above the horizontal RGP.
Cables shall be positioned as for normal usage.
If the mains port input cable is less than 0,8 m long, (including power supplies integrated in
the mains plug) an extension cable shall be used such that the external power supply unit is
placed on the tabletop. The extension cable shall have characteristics similar to the mains
cable (including the number of conductors and the presence of a ground connection). The
extension cable shall be treated as part of the mains cable.
In the above arrangements, the cable between the EUT and the power accessory shall be
arranged on the tabletop in the same manner as other cables connecting components of the
EUT.
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– 6 – CISPR 16-2-3:2010/AMD2:2014
© IEC 2014
6.4.1.3 Floor-standing arrangement
The EUT shall be placed on the horizontal RGP, orientated for normal use, but separated
from metallic contact with the RGP by up to 15 cm of insulation.
The cables shall be insulated (by up to 15 cm) from the horizontal RGP. If the equipment
requires a dedicated ground connection, then this shall be provided and bonded to the
horizontal ground plane.
Intra-unit cables (between units forming the EUT or between the EUT and auxiliary equipment)
shall drape to, but remain insulated from, the horizontal RGP. Any excess shall either be
folded at the cable centre into a bundle no longer than 0,4 m or arranged in a serpentine
fashion. If an intra-unit cable length is not long enough to drape to the horizontal RGP but
drapes closer than 0,4 m, then the excess shall be folded at the cable centre into a bundle no
longer than 0,4 m. The bundle shall be positioned such that it is either 0,4 m above the
horizontal RGP or at the height of the cable entry or connection point if this is within 0,4 m of
the horizontal RGP.
For equipment with a vertical cable riser, the number of risers shall be typical of installation
practice. Where the riser is made of non-conductive material, a minimum spacing of at least
0,2 m shall be maintained between the closest part of the equipment and the nearest vertical
cable. Where the riser structure is conductive, the minimum spacing of 0,2 m shall be
between the closest parts of the equipment and riser structure.
6.4.1.4 Combinations of tabletop and floor-standing equipment arrangement
Intra-unit cables between a tabletop unit and a floor standing unit shall have the excess
folded into a bundle no longer than 0,4 m. The bundle shall be positioned such that it is either
0,4 m above the horizontal RGP or at the height of the cable entry or connection point if this is
within 0,4 m of the horizontal RGP.
6.4.2 The time of operation
Replace the existing title and text of this subclause by the following new title and new text:
6.4.2 Operation of the EUT
The operating conditions of the EUT shall be determined by the manufacturer according to the
typical use of the EUT with respect to the expected highest level of emission. The determined
operational mode and the rationale for the selected operating conditions shall be stated in the
test report.
The EUT shall be operated within the rated (nominal) operating voltage range and typical load
conditions (mechanical or electrical) for which it is designed. Actual loads should be used
whenever possible. If a simulator is used, it shall represent the actual load with respect to its
radio frequency and functional characteristics.
The test programmes or other means of exercising the equipment should ensure that various
parts of a system are exercised in a manner that permits detection of all system disturbances.
6.4.3 Running-in time
Replace the existing title and text of this subclause by the following new title and new text:
6.4.3 EUT time of operation
The time of operation shall be, in the case of EUTs with a given rated operating time, in
accordance with the marking; in all other cases, the EUT shall be continuously operated
throughout the test.
---------------------- Page: 8 ----------------------
CISPR16-2-3:2010/AMD2:2014 –7–
© IEC 2014
6.4.4 Supply
Replace the existing title and text of this subclause by the following new title and new text:
6.4.4 EUT running-in time
No specific running-in time, prior to testing, is given, but the EUT shall be operated for a
sufficient period to ensure that the modes and conditions of operation are typical of those
during the life of the equipment. For some EUTs, special test conditions may be prescribed in
the relevant product standards.
6.4.5 Mode of operation
Replace the existing title and text of this subclause by the following new title and new text:
6.4.5 EUT supply
The EUT shall be operated from a supply having the rated voltage of the EUT. If the level of
disturbance varies considerably with the supply voltage, the measurements shall be repeated
for supply voltages over the range of 0,9 to 1,1 times the rated voltage. EUTs with more than
one rated voltage shall be tested at the rated voltage that causes maximum disturbance.
Add, after the 6.4.5, the following new subclauses:
6.4.6 EUT mode of operation
The EUT shall be operated under practical conditions that cause the maximum disturbance at
the measurement frequency.
6.4.7 Operation of multifunction equipment
Multifunction equipment which is subjected simultaneously to different clauses of a product
standard, and/or different 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 and/or standards when
each function has satisfied the requirements of the relevant clause and/or standard.
For equipment where 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, or where the simultaneous operation of several functions would result in
saving measurement time, the equipment shall be deemed to have complied if it meets the
provisions of the relevant clause and/or standard with the necessary functions operated.
6.4.8 Determination of arrangement(s) causing maximum emissions
Initial testing shall identify the frequency that has the highest disturbance relative to the limit.
This identification shall be performed while operating the EUT in typical modes of operation
and with cable positions in a test arrangement that is representative of typical installation
practice.
The frequency of highest disturbance with respect to the limit shall be found by investigating
disturbances at a number of significant frequencies. This provides confidence that the
probable frequency of maximum disturbance has been found and that the associated cable,
EUT arrangement and mode of operation has been identified.
For initial testing, the EUT should be arranged in accordance with the product standards as
appropriate.
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– 8 – CISPR 16-2-3:2010/AMD2:2014
© IEC 2014
6.4.9 Recording of measurements
Of those disturbances above (L – 20 dB), where L is the limit level in logarithmic units, the
disturbance levels and the frequencies of at least the six highest disturbances shall be
recorded.
For radiated disturbances, the antenna polarization and height for each reported disturbance
shall be recorded.
6.6.2 Minimum measurement times
Replace the existing text in the first paragraph of this subclause, modified by Amendment 1,
by the following new text:
The minimum measurement (dwell) times are given in Table 7. From Table 7, the minimum
scan times for measurements over a complete CISPR band have been derived in Table 1.
These minimum measurement (dwell) times for scanning receivers and FFT-based measuring
instruments in Table 7 and the scan times for spectrum analyzers in Table 1 apply to CW
signals.
In addition, the test report shall include the value of the measurement instrumentation
uncertainty corresponding to the used test setup, calculated as per the requirements of
CISPR 16-4-2.
In the existing second paragraph, delete the first sentence (beginning with “The scan times”).
6.6.6 Timing considerations using FFT-based instruments
Replace the existing Note 2 and footnote 3, added by Amendment 1, by the following new
note:
NOTE 2 Additional background information on the definition of the FFT-based receiver can be found in CISPR
16-3 [2].
7.3.6.2 Test environment
Replace the introducing text of the existing list by the following new introducing text:
If the ambient field-strength level at frequencies within the specified measurement ranges, at
the specified measurement distance, exceeds the limit(s), the following alternatives may be
used to show compliance of the EUT:
Replace the existing item a) of the list by the following new items a) and b):
a) Perform measurements at a closer distance and extrapolate results to the distance at
which the limit is specified. Extrapolate the results using one of the following methods:
1) determine L corresponding to the close-in distance d by applying the relation
2 2
L = L (d /d ), where L is the specified limit in µV/m at the distance d ;
2 1 1 2 1 1
NOTE This extrapolation method can only be used when both d and d are in the far-field zone of the
1 2
EUT at all frequencies of measurement.
2) use the formula as recommended by the product standard;
3) determine the limit L at a distance d applying an extrapolation formula verified by
2 2
measurements at no less than three different distances.
b) In the frequency bands where the ambient noise values are exceeded (measured values
higher than 6 dB below the limit), the disturbance values of the EUT may be interpolated
from the adjacent disturbance values. The interpolated value shall lie on the curve
describing a continuous function of the disturbance values adjacent to the ambient noise.
---------------------- Page: 10 ----------------------
CISPR16-2-3:2010/AMD2:2014 –9–
© IEC 2014
Renumber the existing items b) to e) of the list as items c) to f) respectively.
Replace, in the existing item d), which is now renumbered e), the words “open field area test
site” by the abbreviation “OATS”.
7.3.6.3 Configuration of equipment under test
Replace, in the existing title, “equipment under test” by “EUT”.
Replace the entire text of this subclause by the following new text and figure:
The EUT operating conditions and arrangement are detailed in 6.4.
Ferrite clamp type CMADs are used to reduce the influence of cables outside the test volume
on radiated disturbance measurement results. If CMADs are used, the cable leaving the test
volume shall enter the CMAD at the point where it reaches the ground plane as shown in
Figure 22. The CMAD shall always be placed flat on the ground plane. The part of the cable
between the exit point of the CMAD and the exit point of the turntable shall be kept as short
as possible. Each cable shall be treated with a separate CMAD. Cables with diameters larger
than the cable openings of commercially available CMADs do not have to be treated with
CMADs.
NOTE 1 In order to avoid saturation, high common mode current power cables (e.g. the output port of inverters)
should not be treated with CMADs unless the CMADs in use are specifically designed for high common mode
currents.
For EUTs with up to three cables leaving the test volume, each cable shall be treated with a
CMAD during radiated disturbance measurements. This requirement applies to any type of
cable (e.g. power, telecommunication, and control). For a test set-up with more than three
cables leaving the test volume, only the three cables from which the highest emission is
expected need to be equipped with CMADs. The cables on which the CMADs have been
applied shall be documented in the test report.
NOTE 2 The limitation of the number of CMADs is discussed in [10]. In comparing large versus small size EUTs,
as well as EUTs with one versus two cables, the author concluded that a small EUT with only one cable leaving the
test volume is worst case. The author’s investigation covered application of CMADs to tabletop equipment with
three cables or less.
General information on the purpose and application of ferrite-type CMADs is provided in 4.9.1
of CISPR/TR 16-3 [2].
---------------------- Page: 11 ----------------------
– 10 – CISPR 16-2-3:2010/AMD2:2014
© IEC 2014
EUT
Turntable
1)
CMAD
IEC 0838/14
1)
CMADs shall comply with the relevant specifications of CISPR 16-1-4; their use shall be documented in the test
report.
Figure 22 – Position of CMAD for table-top equipm
...
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