CISPR 16-1-2:2014/AMD1:2017

CISPR 16-1-2 ®
Edition 2.0 2017-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE

COMITÉ INTERNATIONAL SPÉCIAL DES PERTURBATIONS RADIOÉLECTRIQUES

BASIC EMC PUBLICATION
PUBLICATION FONDAMENTALE EN CEM
AMENDMENT 1
AMENDEMENT 1
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
Spécifications des méthodes et des appareils de mesure des perturbations
radioélectriques et de l'immunité aux perturbations radioélectriques –
Partie 1-2: Appareils de mesure des perturbations radioélectriques et de
l'immunité aux perturbations radioélectriques – Dispositifs de couplage pour la
mesure des perturbations conduites
CISPR 16-1-2:2014-03/AMD1:2017-11(en-fr)

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CISPR 16-1-2 ®
Edition 2.0 2017-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE

COMITÉ INTERNATIONAL SPÉCIAL DES PERTURBATIONS RADIOÉLECTRIQUES

BASIC EMC PUBLICATION
PUBLICATION FONDAMENTALE EN CEM

AMENDMENT 1
AMENDEMENT 1
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

Spécifications des méthodes et des appareils de mesure des perturbations

radioélectriques et de l'immunité aux perturbations radioélectriques –

Partie 1-2: Appareils de mesure des perturbations radioélectriques et de

l'immunité aux perturbations radioélectriques – Dispositifs de couplage pour la

mesure des perturbations conduites

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.100.10; 33.100.20 ISBN 978-2-8322-4890-4

– 2 – CISPR 16-1-2:2014/AMD1:2017
© IEC 2017
FOREWORD
This amendment has been prepared by subcommittee CISPR 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
CIS/A/1222/FDIS CIS/A/1232/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 website 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.
_____________
3.1.3
asymmetric voltage
Replace the existing definition and note by the following new definition and new note:
RF disturbance voltage appearing between the electrical mid-point of the individual terminals
or leads in a two- or multi-wire circuit and reference ground, sometimes called the CM voltage
Note 1 to entry If, in case of an LV AC mains power port, V is the vector voltage between one of the mains
a
terminals and reference ground, and V is the vector voltage between the other mains terminal and reference
b
ground, the asymmetric voltage is half the vector sum of V and V , i.e. (V + V )/2.
a b a b
3.1.4
symmetric voltage
Replace the existing definition and note by the following new definition and new note:
RF disturbance voltage appearing between any pair of wires not comprising the wire at
ground potential in a two- or multi-wire circuit, such as a single-phase mains supply or a
bundle of twisted pairs in a communication cable, sometimes called the DM voltage
Note 1 to entry In case of an LV AC mains power port, the symmetric voltage is the vector difference (V – V ).
a b
© IEC 2017
3.1.5
unsymmetric voltage
Replace the existing definition and notes by the following new definition and new note:
RF disturbance voltage appearing between an individual terminal or lead and reference
ground, in a two- or multi-wire circuit
Note 1 to entry The unsymmetric voltage is the voltage measured by the use of a V-AMN. It denotes the
amplitude of the vector voltage, V or V (mentioned in the Note 1 to entry in 3.1.3 and 3.1.4).
a b
3.1.6
artificial mains network
AMN
Replace the existing Note 1 to entry by the following new note:
Note 1 to entry There are two basic types of this network, the V-network (V-AMN) which couples the unsymmetric
voltages, and the delta-network (Δ-AMN), which couples symmetric (DM) and asymmetric (CM) voltages
separately.
The addition of a new Note 4 to entry applies to the French language only.
3.1.14
reference ground plane
RGP
Replace the existing definition and note by the following new definition and new notes:
flat, conductive surface that is at the same electric potential as reference ground, which is
used as a common reference, and which contributes to a reproducible parasitic capacitance
with the surroundings of the EUT
Note 1 to entry A reference ground plane is needed for the measurement of conducted disturbances, and serves
as reference for the measurement of unsymmetric and asymmetric disturbance voltages.
Note 2 to entry In some regions, the term ‘reference earth’ is used in place of ‘reference ground’.
Add, after the existing definition 3.1.14, the following new definition and note:
3.1.15
artificial network
AN
network that provides a defined impedance to the EUT at radio frequencies, couples the
disturbance voltage to the measuring receiver, and decouples the test circuit from the mains
network or other power lines or from signal lines with associated equipment
Note 1 to entry There are four basic types of this network, the V-network (V-AN) which couples the unsymmetric
voltages, the delta-network (Δ-AN), which couples symmetric (DM) and asymmetric (CM) voltages separately, the
Y-network (Y-AN) and the coaxial (screened cable) network which couple asymmetric (CM) voltages.
3.2 Abbreviations
Delete the abbreviation AN from the existing list.
Add, to the existing list, the following new abbreviations:
CM Common mode
Δ-AMN Artificial mains Δ-network (‘Δ’ is pronounced ‘delta’)
Δ-AN Artificial Δ-network (‘Δ’ is pronounced ‘delta’)
DM Differential mode
– 4 – CISPR 16-1-2:2014/AMD1:2017
© IEC 2017
LV Low voltage
V-AMN Artificial mains V-network
V-AN Artificial V-network
UM Unsymmetric mode
4 Artificial mains networks
Replace the existing title by the following new title:
4 Artificial networks for AC mains and other power ports
4.1 General
Replace the existing text, including Notes 1 and 2, by the following new text and new notes:
An AN is required to provide a defined impedance at radio frequencies at the terminals of the
EUT's port under test, to isolate the test circuit from unwanted RF signals on the laboratory
AC or DC supply mains, other power source or load connected to the EUT but not subject to
testing in relation with that EUT, and to couple the disturbance voltage to the measuring
receiver.
For use with measurements on LV AC mains power ports, there are two basic types of AMN,
the V-AMN, which couples the unsymmetric voltages, and the Δ-AMN, which couples the
symmetric and the asymmetric voltages separately. Use of practical implementations of these
AMNs is not restricted to LV AC mains power ports. In principle they can be used for
measurements on any kind of power port. The user of such artificial networks is
recommended to consult the respective product standard for guidance. The information and
advice in this standard for the AMN is hence valid for use of that AMN or another AN at power
ports other than LV AC mains power ports.
The AN or AMN is furnished with three ports, the port for connection to the laboratory AC or
DC supply mains or other power source or load (power/load port), the port for connection of
the EUT (EUT port), and the disturbance output port for connection of the measuring receiver
(receiver port).
NOTE 1 Examples of circuits of AMNs and ANs are given in Annex A.
NOTE 2 This clause specifies impedance and isolation requirements for ANs including the corresponding
measurement methods. Some background and rationale on the AMN related uncertainties are given in 6.2.3 of
CISPR/TR 16-4-1:2009 and in CISPR 16-4-2.
4.2 AMN impedance
Replace the existing title by the following new title:
4.2 AN impedances
Replace the existing text, including the note, by the following new text and new note:
The specification of the UM termination impedance of a V-AN includes the magnitude and the
phase of the impedance measured at an EUT terminal with respect to the reference ground,
when the V-AN’s receiver port i
...