SIST IEC 60364-7-711:2000

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)

---------------------- Page: 1 ----------------------
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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



Warning! Make sure that you obtained this publication from an authorized distributor.

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® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale

---------------------- Page: 3 ----------------------
– 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

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CISPR 16-1-2:2014/AMD1:2017 – 3 –
© 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

---------------------- Page: 5 ----------------------
– 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 is terminated with 50 Ω.
In case of a Δ-AMN or Δ-AN, the specification of the termination impedances includes the
magnitude and phase of the asymmetric (CM) termination impedance and the magnitude and
phase of the symmetric (DM) termination impedance. The asymmetric termination impedance

---------------------- Page: 6 ----------------------
CISPR 16-1-2:2014/AMD1:2017 – 5 –
© IEC 2017
is measured with the two (or more) active EUT terminals joined together relative to the
reference ground (as in Figure E.2). The symmetric termination impedance is measured
between each active pair of EUT terminals without relation to reference ground and requires
the use of a balun (see Figure K.2). For the impedance measurements, also for Δ-ANs the
receiver port shall be terminated by 50 Ω.
The impedance at the EUT terminals of the AN defines the termination impedance presented
to the EUT's port under test. For this reason, when a disturbance output terminal is not
connected to the measuring receiver, it shall be terminated by 50 Ω. To assure accurate
termination into 50 Ω of the receiver port, a 10 dB attenuator shall be used either inside or
external to the AN, the VSWR of which (seen from either side) shall be less than or equal to
1,2 to 1. The attenuation shall be included in the measurement of the voltage division factor
(see 4.11).
The impedance between each conductor (except PE, if any) of the EUT port and reference
ground shall comply with the provisions of 4.3, 4.4, 4.5 or 4.6, as appropriate, for any value of
external impedance, including a short circuit connected between the corresponding mains or
other power supply terminal and reference ground of the power/load port. This requirement
shall be met at all temperatures which the AN may reach under normal conditions for
continuous currents up to the specified maximum. The requirement shall also be met for peak
currents up to the specified maximum.
NOTE Because EUT connectors are not optimized for radio frequencies up to 30 MHz, the measurement of the
network impedance is carried out with special measurement adaptors to enable short-length connections. The OSM
(open/short/matched) calibration of the network analyzer is used to characterize the adaptors, taking the insertion
loss and the conductor lengths of the adaptors into account.
4.6 150 Ω artificial mains V-network (V-AMN) for use in the frequency range 150 kHz
to 30 MHz
Replace the existing title and text by the following:
4.6 (Void)
4.7 150 Ω artificial mains delta-network (Δ-AMN) for use in the frequency range
150 kHz to 30 MHz
Replace the existing title and text (including Figure 4) by the following new title, new text and
new tables:
4.7 150 Ω artificial delta-network (Δ-AN) for mains and other power ports for use in
the frequency range 150 kHz to 30 MHz
4.7.1 Requirements
In the frequency range of interest from 150 kHz to 30 MHz the AN shall have an impedance of
magnitude (150 ± 30) Ω with a phase angle not exceeding 40°, both between the EUT
terminals not including reference ground and between these two EUT terminals joined
together and the reference ground; see Table 8.
For proper performance in the range 150 kHz to 30 MHz, the AN shall also meet the
characteristics specified in Table 9 in the frequency range 9 kHz to 150 kHz. Adherence to
these characteristics does not however qualify the 150 Ω Δ-AN for use with measurements of
disturbance voltages in the range below 150 kHz. If necessary, another Δ-AN needs to be
specified for such measurements.

---------------------- Page: 7 ----------------------
– 6 – CISPR 16-1-2:2014/AMD1:2017
© IEC 2017
Table 8 – Parameters of the 150 Ω Δ-AN (150 kHz to 30 MHz)
Description of the parameter Nominal value and tolerance
1 Frequency range 150 kHz to 30 MHz
2 Asymmetric (CM) termination impedance at the EUT port, (150 ± 30) Ω
º
magnitude and phase (0 ± 40)
3 Symmetric (DM) termination impedance at the EUT port, (150 ± 30) Ω
a º
magnitude and phase (0 ± 40)
b
4 Longitudinal conversion loss (LCL) at the EUT port ≥ 26 dB (symmetric 150 Ω system)
5 Asymmetric (CM) insertion loss power/load port – EUT ≥ 20 dB (asymmetric 50 Ω system)
port
6 Symmetric (DM) insertion loss power/load port – EUT port ≥ 20 dB (symmetric 150 Ω system)
> 40 dB, with external capacitor
7 Discharge resistors for blocking capacitors in the current ≥ 1,5 MΩ
path (for measurements on DC power ports
a
If needed, product committees can define a different symmetric termination impedance.
b
The LCL of the AN should be significantly larger than the internal LCL of the EUT.

Table 9 – Parameters of the 150 Ω Δ-AN (9 kHz to 150 kHz)
Description of the parameter Nominal value and tolerance
1 Extended frequency range 9 kHz to 150 kHz
2 Asymmetric (CM) termination impedance at the EUT ≥ 10 Ω (power/load port open)
port, magnitude only
3 Symmetric (DM) termination impedance at the EUT ≥ 1 Ω (power/load port open)
port, magnitude only
4 Longitudinal conversion loss (LCL) at the EUT port ≥ 26 dB (symmetric 150 Ω system)
5 Asymmetric (CM) insertion loss of power/load port to ≥ 20 dB at 150 kHz (asymmetric 50 Ω system),
EUT port decreasing with decreasing frequency with
40 dB/decade
6 Symmetric (DM) insertion loss of power/load port to ≥ 20 dB at 150 kHz
EUT port
> 40 dB with external capacitor
(symmetric 150 Ω system), decreasing with
decreasing frequency with 40 dB/decade
NOTE Specifications are given for proper operation of typical EUTs only – not for disturbance measurements
< 150 kHz.

4.7.2 Measurement of the Δ-AN parameters
Measurements for determination of characteristics of the Δ-ANs are described in Annex K.
4.7.3 Current carrying capacity and series voltage drop
The maximum continuous currents and the maximum peak current shall be specified. The
voltage applied to the EUT when passing continuous currents up to the maximum shall be not
less than 95 % of the mains or other power supply voltage at the mains or other power input
terminals of the Δ-AN.
Annex A – AMNs
Replace the existing title of this annex by the following new title:

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CISPR 16-1-2:2014/AMD1:2017 – 7 –
© IEC 2017
Annex A
(normative)

Characteristics and their measurement, circuit schemes
and examples of modern implementations of AMNs and
other ANs for use with power or load ports of EUTs
A.5 An example of the 150 Ω artificial mains V-network
Replace the existing title and text by the following:
A.5 (Void)
A.6 Example of the 150 Ω artificial mains delta-network
Replace the existing title and text (including Figure A.2 and Table A.5) by the following new
title, new text, new figures and tables:
A.6 Examples of the 150 Ω Δ-AN
Figure A.2 shows a suitable circuit for a delta-network. The component values are given in
Table A.5.
1
R
S 12
C R R
L 1 3 8
2
R R R
1 6 10
C
R
4
P
Additional
R R R
2 7 11
filter sections
C
if required C
2 R R
Receiver port
L 5 9
1
S
Power input port
2
Measuring receiver
Z
IEC

Key
P EUT port of the AN
1 switch position for measurement of the symmetric voltage component
2 switch position for measurement of the asymmetric voltage component
S double pole double throw switch
Z measuring receiver input impedance
Figure A.2 – Example of a 150 Ω Δ-AN for low current drain across the AN
for the measurement of asymmetric and symmetric disturbance voltages

---------------------- Page: 9 ----------------------
– 8 – CISPR 16-1-2:2014/AMD1:2017
© IEC 2017
Table A.4 – Component values of the 150 Ω Δ-AN
shown in Figure A.2
Component Value
R R 118,7 (120) Ω
,
1 2
R , R 152,9 (150) Ω

3 5
R
390,7 (390) Ω
4
R , R 275,7 (270) Ω

6 7
R , R 22,8 (22) Ω

8 9
R , R 107,8 (110) Ω

10 11
R 50 Ω

12
C , C 0,1 μF

1 2
L, C Suitable value to achieve specified impedance
NOTE 1 The turns ratio of the balanced to unbalanced transformer is assumed to be 1:2,5 with centre tap.
NOTE 2 Resistance values shown in brackets are the nearest preferred values (± 5 % tolerance).

Calculations give the following network performance. Values in brackets are based on the
resistance values in brackets.
Insertion loss AE port to EUT port: Symmetric  20 (20) dB
Asymmetric 20 (19,9) dB
Termination impedance at EUT port: Symmetric  150 (150) Ω
Asymmetric  150 (148) Ω
Another example for a 150 Ω Δ-AN is shown in Figure A.7. Such delta-networks are
commercially available with rated current throughputs up to 100 A DC and 1 500 V DC rated
voltage.

---------------------- Page: 10 ----------------------
CISPR 16-1-2:2014/AMD1:2017 – 9 –
© IEC 2017
Power/Load Port A EUT Port A
C C
4 6
S1 position:
1 – DM (differential mode, symmetric)
R
1
C
1 2 – CM (common mode, asymmetric)
L
1
44 nF
S1
RF-Out
L
2
GND
C
3
P
220 nF
Air coil
GND
TR1
C 51
R R
2
2 3
L
3
44 nF R
4
C
5
GND
EUT Port B
Power/Load Port B

IEC

Figure A.7 – Example of a 150 Ω Δ-AN for high current drain across the AN
for the measurement of asymmetric and symmetric disturbance voltages
Add, after the existing Annex J, the following new Annex K:

---------------------- Page: 11 ----------------------
– 10 – CISPR 16-1-2:2014/AMD1:2017
© IEC 2017
Annex K
(normative)

Measurement of Δ-AN parameters
Most of the typical characteristics of Δ-ANs are measured according to the instructions for
measurements on asymmetric artificial networks (AANs) in Annex E of this standard.
The asymmetric impedance at the EUT port of the Δ-AN is measured according to Figure E.2.
The calibration set-up and the set-up for measurement of the symmetric impedance at the
EUT port of the Δ-AN are shown in Figures K.1 and K.2, respectively.
Coaxial
Vector
Match
connector
network
1:1 Symmetric
Short
Z
cal
analyzer
balun terminals
Open

S
11
Reference
plane
IEC

Figure K.1 – Calibration of the set-up with an open, short and match (50 Ω)
standard reference termination
Coaxial Receiver
Vector
connector
port
network Symmetric
1:1
Delta
EUT
analyzer terminals
Balun
AN
S
11
50 Ω
Reference
plane
IEC

Figure K.2 – Set-up for the measurement of the symmetric impedance
The LCL of the Δ-AN is measured according to Figure E.5 (however with modified resistor
values for a symmetric impedance of 150 Ω, instead of 100 Ω).
The asymmetric insertion loss between the EUT port and the port of the AN for connection to
the external power source or load is measured according to Figure E.6.
The symmetric insertion loss between the EUT port and the port of the AN for connection to
the external power source or load is measured according to Figure E.7.
The voltage division factor for asymmetric measurements is measured according to
Figure E.8.

---------------------- Page: 12 ----------------------
CISPR 16-1-2:2014/AMD1:2017 – 11 –
© IEC 2017
The voltage division factor for symmetric measurements is measured according to the
Figures K.3 and K.4 taking the balun loss measured according to Figure K.5 into account.
Power/Load
Receiver
Port
port
1:1 Symmetric
10 dB
EUT
Vector
balun terminals

Delta
network
50 Ω
AN
analyzer
S
21
10 dB
IEC

Figure K.3 – Set-up for test system normalization
Power/Load
Receiver
Port
port
1:1 Symmetric
10 dB 10 dB
EUT
Vector
balun terminals

Delta
network
AN
analyzer
50 Ω
S
21
IEC

Figure K.4 – Set-up for symmetric voltage division factor measurement
The voltage division factor needs to be measured with both AE-port terminals open and
shorted. Subtract the insertion loss of the 1:1 balun measured according to Figure K.5 from
the voltage division factor measured according to Figure K.4.
1:1 Symmetric 1:1
10 dB
10 dB
Vector
balun terminals balun

network
analyzer
S
21
IEC

Figure K.5 – Set-up for the measurement of the insertion loss of a balun by
measuring the insertion loss of two identical baluns

___________

---------------------- Page: 13 ----------------------
– 12 – CISPR 16-1-2:2014/AMD1:2017
© IEC 2017
AVANT-PROPOS
Le présent amendement a été établi par le sous-comité CISPR A: Mesures des perturbations
radioélectriques et méthodes statistiques, du comité d'études CISPR de l'IEC: Comité
international spécial des perturbations radioélectriques.
Le texte de cet amendement est issu des documents suivants:
FDIS Rapport de vote
CIS/A/1222/FDIS CIS/A/1232/RVD

Le rapport de vote indiqué dans le tableau ci-dessus donne toute information sur le vote ayant
abouti à l'approbation de cet amendement.
Le comité a décidé que le contenu de cet amendement et de la publication de base ne sera
pas modifié avant la date de stabilité indiquée sur le site web de l'IEC sous
"http://webstore.iec.ch" dans les données relatives à la publication recherchée. A cette date,
la publication sera
• reconduite,
• supprimée,
• remplacée par une édition révisée, ou
• amendée.

_____________

3.1.3
tension asymétrique
Remplacer la définition et la note existantes par la nouvelle définition et la nouvelle note
suivantes:
tension perturbatrice RF qui apparaît entre le point milieu électrique de chaque borne ou
sortie et la terre de référence dans un circuit à deux ou plusieurs fils, parfois appelée tension
en mode commun
Note 1 à l'article Dans le cas d'un accès d'alimentation secteur en courant alternatif basse tension, si V désigne
a
la tension vectorielle entre l'une des bornes d'alimentation et la terre de référence, et si V désigne la tension
b
vectorielle entre l'autre borne d'alimentation et la terre de référence, alors la tension asymétrique correspond à la
moitié de la somme vectorielle de V et de V , soit (V + V )/2.
a b a b
3.1.4
tension symétrique
Remplacer la définition et la note existantes par la nouvelle définition et la nouvelle note
suivantes:
tension perturbatrice RF qui apparaît entre toute paire de fils, hors fil au potentiel de la terre,
dans un circuit à deux ou plusieurs fils, par exemple une alimentation secteur monophasée ou
un faisceau de paires torsadées à l'intérieur d'un câble de communication, parfois appelée
tension différentielle ou tension en mode différentiel
Note 1 à l'article Dans le cas d'un accès d'alimentation secteur en courant alternatif basse tension, la tension
symétrique correspond à la différence vectorielle (V – V ).
a b

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CISPR 16-1-2:2014/AMD1:2017 – 13 –
© IEC 2017
3.1.5
tension dissymétrique
Remplacer la définition et les notes existantes par la nouvelle définition et la nouvelle note
suivantes:
tension perturbatrice RF qui apparaît entre une borne ou une sortie et la terre de référence
dans un circuit à deux ou plusieurs fils
Note 1 à l'article La tension dissymétrique correspond à la tension mesurée en utilisant un AMN en V. Elle
indique l'amplitude de la tension vectorielle, V ou V (mentio
...