CISPR 16-4-2:2011/AMD2:2018

CISPR 16-4-2 ®
Edition 2.0 2018-08
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 4-2: Uncertainties, statistics and limit modelling – Measurement
instrumentation uncertainty
Spécifications des méthodes et des appareils de mesure des perturbations
radioélectriques et de l'immunité aux perturbations radioélectriques –
Partie 4-2: Incertitudes, statistiques et modélisation des limites – Incertitudes
de mesure de l’instrumentation

CISPR 16-4-2:2011-06/AMD2:2018-08(en-fr)

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CISPR 16-4-2 ®
Edition 2.0 2018-08
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 4-2: Uncertainties, statistics and limit modelling – Measurement

instrumentation uncertainty
Spécifications des méthodes et des appareils de mesure des perturbations

radioélectriques et de l'immunité aux perturbations radioélectriques –

Partie 4-2: Incertitudes, statistiques et modélisation des limites – Incertitudes

de mesure de l’instrumentation

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.100.10; 33.100.20 ISBN 978-2-8322-5920-7

– 2 – CISPR 16-4-2:2011/AMD2:2018
© IEC 2018
FOREWORD
This amendment has been prepared by subcommittee CISPR subcommittee A: Radio-
interference measurements and statistical methods, of IEC CISPR committee: International
special committee on radio interference.
The text of this amendment is based on the following documents:
FDIS Report on voting
CISPR/A/1257/FDIS CISPR/A/1259/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.
The contents of the corrigendum of January 2019 have been included in this copy.
_____________
2 Normative references
Replace the dated reference CISPR 16-2-3:2010, by the following new reference:
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
3.1 Terms and definitions
Add, after the existing term and definition 3.1.1, the following new term and definition:
3.1.2
small EUT
equipment, either positioned on a table top or standing on the floor that, including its cables,
fits in a cylindrical test volume of 1,5 m in diameter and 1,5 m in height measured from the
floor
3.3 Abbreviations
Add, to the existing list modified by Amendment 1, the following new abbreviations:

© IEC 2018
AN artificial network
Δ-AN artificial Δ-network (‘Δ’ is pronounced ‘delta’)
LLAS large loop antenna system
LV low voltage
V-AMN artificial mains V-network

Table 1 – Values of U
cispr
Replace the first three lines of this table, modified by Amendment 1, by the following new
lines:
Conducted disturbance at AC mains and other power ports using a V-AMN (9 kHz to 150 kHz) 3,8 dB B.1
(150 kHz to 30 MHz) 3,4 dB B.2
Conducted disturbance at AC mains ports using a voltage probe (9 kHz to 30 MHz) 2,9 dB B.3

Add, after the measurement method “Conducted disturbance at telecommunication port using
CP”, the following new line:
Conducted disturbance at telecommunication port using CP and CVP (150 kHz to 30 MHz) 4,0 dB B.5

Add before “Radiated disturbance (electric field strength at an OATS or in a SAC)” the
following new line:
Radiated disturbance (disturbance current in a LLAS) (9 kHz to 30 MHz) 3,3 dB F.1

Add, after the existing NOTE 2, the following new notes:
NOTE 3 The value of U for conducted disturbances at telecommunication ports using CP and CVP is based on
cispr
the expanded uncertainty in Table B.5 with consideration of additional uncertainties attributed to the CP transfer
admittance Y and mismatch uncertainty CP-receiver δM; see comment B18).
T
NOTE 4 The values of U for the OATS, SAC and FAR are based on a small EUT – an EUT fitting in a
cispr
cylindrical test volume of 1,5 m in diameter and 1,5 m in height – for a 3 m measurement distance (per 3.1.2).

5.1 Conducted disturbance measurements at a mains port using an AMN
Replace, in the title, the phrase "an AMN" by the phrase "a V-AMN".

5.1.1 Measurand for measurements using an AMN
Replace, in the title, the phrase "an AMN" by the phrase "a V-AMN".

– 4 – CISPR 16-4-2:2011/AMD2:2018
© IEC 2018
5.1.2 Symbols of input quantities specific to measurements using an AMN
Replace in the title the phrase "an AMN" by the phrase "a V-AMN".
Replace the line starting with δD by the following new line:
mains
δD Correction for the error caused by AC mains and other power supply disturbances,
mains
in dB
5.1.3 Input quantities to be considered for conducted disturbance measurements at a
mains port using an AMN
Replace, in the title, the phrase "an AMN" by the phrase "a V-AMN".
Replace the eighth dashed item by the following new text:
– Effect of disturbances originating from the laboratory AC mains or other power supply

Add, after the existing Subclause 5.6.3 added by Amendment 1, the following new Subclause
5.7:
5.7 Conducted disturbance measurements at AC mains and other power ports using a
Δ-AN
5.7.1 Measurand for measurements using a Δ-AN
V Asymmetric voltage in dB(μV), measured at the EUT port of the Δ-AN relative to the
reference ground plane, and also symmetric voltage between two terminals at the
EUT port of the Δ-AN not including reference ground; optionally also the
unsymmetric voltage in dB(μV), measured at the EUT port of the Δ-AN relative to
the reference ground plane, if the Δ-AN is furnished with a respective port for
connection of the measuring receiver
5.7.2 Symbols of input quantities specific to measurements using a Δ-AN
F Voltage division factor (asymmetric resp. symmetric) of the Δ-AN, in dB
AN
δF Correction for voltage division factor (VDF) frequency interpolation error, in dB
AN f
δD Correction for the error caused by AC mains and other power supply disturbances,
mains
in dB
δV Correction for the effect of the environment, in dB
env
δZ Correction for imperfect asymmetric or symmetric Δ-AN impedance, in dB
AN
5.7.3 Input quantities to be considered for conducted disturbance measurements
at AC mains and other power ports using a Δ-AN
– Receiver reading
– Attenuation of the connection between AN and receiver
– AN voltage division factor (asymmetric and symmetric)
– AN VDF frequency interpolation
– Receiver related input quantities:
• Receiver sine-wave voltage accuracy
• Receiver pulse amplitude response

© IEC 2018
• Receiver pulse response variation with repetition frequency
• Receiver noise floor
– Mismatch effects between the AN's receiver port and receiver
– AN impedance
– Effect of disturbances originating from the laboratory AC mains or other power supply
– Effect of environment
Add, after the existing Clause 8, the following new Clause 9:
9 Radiated disturbance measurements in the frequency range 9 kHz to 30 MHz
9.1 Magnetic field disturbance measurements using the LLAS in the frequency range
9 kHz to 30 MHz (see also Clause F.1)
9.1.1 Measurand for LLAS measurements
I Current in dB(µA), measured in each of the three loops of the LLAS
9.1.2 Symbols of input quantities specific for LLAS measurements
δZ
vf
Correction for validation factor deviation, in dB
δZ
fi
Correction for validation factor frequency interpolation, in dB
9.1.3 Input quantities to be considered for LLAS measurements
– Receiver reading
– Attenuation of connecting cable between LLAS and receiver
– Validation factor deviation
– Validation factor frequency interpolation
– Receiver related input quantities:
• Receiver sine-wave voltage accuracy
• Receiver pulse amplitude response
• Receiver pulse response variation with repetition frequency
• Receiver noise floor
– Misma
...