CISPR 16-2-1:2008/AMD2:2013

CISPR 16-2-1 ®
Edition 2.0 2013-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE
COMITÉ INTERNATIONAL SPÉCIAL DES PERTURBATIONS RADIOÉLECTRIQUES

AMENDMENT 2
AMENDEMENT 2
Specification for radio disturbance and immunity measuring apparatus and
methods –
Part 2-1: Methods of measurement of disturbances and immunity – Conducted
disturbance measurements
Spécifications des méthodes et des appareils de mesure des perturbations
radioélectriques et de l'immunité aux perturbations radioélectriques –
Partie 2-1: Méthodes de mesure des perturbations et de l'immunité – Mesures
des perturbations conduites
CISPR 16-2-1:2008/A2:2013
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CISPR 16-2-1 ®
Edition 2.0 2013-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE

COMITÉ INTERNATIONAL SPÉCIAL DES PERTURBATIONS RADIOÉLECTRIQUES

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

methods –
Part 2-1: Methods of measurement of disturbances and immunity – Conducted

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

radioélectriques et de l'immunité aux perturbations radioélectriques –

Partie 2-1: Méthodes de mesure des perturbations et de l'immunité – Mesures

des perturbations conduites
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX V
ICS 33.100.10; 33.100.20 ISBN 978-2-83220-681-2

– 2 – CISPR 16-2-1 Amend.2 © IEC:2013
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/1023/FDIS CISPR/A/1029/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 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• withdrawn,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.
_____________
2 Normative references
Replace the existing reference to CISPR 16-1-2 by the following new reference:
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
3 Definitions
Add, after definition 3.34 added by Amendment 1, the new terms and definitions 3.35 and
3.36 as follows:
3.35
total common mode impedance
TCM impedance
impedance between the cable attached to the EUT port under test and the reference ground
plane
NOTE The complete cable is seen as one wire of the circuit and the ground plane as the other wire of the circuit.
The TCM wave is the transmission mode of electrical energy, which can lead to radiation of electrical energy if the
cable is exposed in the real application. Vice versa, this is also the dominant mode, which results from exposure of
the cable to external electromagnetic fields.

CISPR 16-2-1 Amend.2 © IEC:2013 – 3 –
3.36
asymmetric artificial network
AAN
network used to measure (or inject) asymmetric (common mode) voltages on unshielded
symmetric signal (e.g. telecommunication) lines while rejecting the symmetric (differential
mode) signal
NOTE 1 An AAN is an AN (artifical network) that provides a simulation of the asymmetric load realized by the
telecommunication network.
NOTE 2 The term “Y-network” is a synonym for AAN.
NOTE 3 The AAN can also be used for immunity testing, where the receiver measurement port becomes the
disturbance injection port.
6.4 Operating conditions of the EUT
Replace the existing title of this subclause by the following new title:
6.4 EUT arrangement and measurement conditions
6.4.1 General
Replace the existing title and text of this subclause as follows:
6.4.1 EUT arrangement
6.4.1.1 General
Where not specified in the product standard, the EUT shall be configured as described in the
following paragraphs.
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,
such practice shall be used in the test arrangement, where possible. This arrangement shall
be typical of the 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 need to be added to the EUT depending upon the results of
preliminary tests. The number of additional cables or wires of the same type should be limited
to the condition where the addition of another cable or wire does not significantly affect the
emission level, i.e. varies by 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, 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.
Where there are multiple interface ports all of the same type, connecting a cable to just one of
that type of port is sufficient, provided it can be shown that the additional cables would not
significantly affect the results.

– 4 – CISPR 16-2-1 Amend.2 © IEC:2013
Any set of results shall be accompanied by a complete description of the cable and equipment
orientation so that results can be repeated. 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 (such as drawers and plug-in cards) 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 should 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 by less than 2 dB, provided that the EUT remains compliant. The
rationale used for selecting the number and type of modules should 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 normally be representative of that used in a typical installation. The rationale used for
selecting units should be stated in the test report.
One module of each type shall be operational in each equipment evaluated in an EUT. For an
EUT comprising a system, one of each type of equipment that can be included in the possible
system configuration shall be included in the EUT.
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.
NOTE It has been found that disturbances from identical modules are generally not additive in practice.
The EUT position relative to the reference ground plane shall be equivalent to that occurring
in use. Therefore, floor-standing equipment is placed on, but insulated from, a reference
ground plane, and tabletop equipment is placed on a non-conductive table.
Equipment designed for wall-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 (AuxEq) shall be terminated using the correct terminating impedance
defined in the product standard. If no product standard can be applied to the particular
configuration, the termination shall be defined by the EUT manufacturer and noted in the test
report.
Cables or other connections to auxiliary equipment located outside the test site shall drape to
the floor, and then be routed to the place where they leave the test site.
Installation of AuxEq shall be in accordance with normal installation practice. Where this
means that the AuxEq is located on the test site, it shall be arranged using the same
conditions applicable for the EUT (for example, distance from the ground plane and insulation
from the ground plane if floor standing, layout of cabling).
6.4.1.2 Arrangement of tabletop equipment
Equipment intended for tabletop use shall
...