CISPR 16-1-4:2010/AMD1:2012

Amendment 1 - Specification for radio disturbance and immunity measuring apparatus and methods - Part 1-4: Radio disturbance and immunity measuring apparatus - Antennas and test sites for radiated disturbance measurements

Amendement 1 - Spécifications des méthodes et des appareils de mesure des perturbations radioélectriques et de l'immunité aux perturbations radioélectriques - Partie 1-4: Appareils de mesure des perturbations radioélectriques et de l'immunité aux perturbations radioélectriques - Antennes et emplacements d'essai pour les mesures des perturbations rayonnées

General Information

• Status: Published
• Publication Date: 10-Jul-2012
• ICS: 33.100.10 - Emission
• ICS: 33.100.20 - Immunity
• Technical Committee: CIS/A - Radio-interference measurements and statistical methods
• Current Stage: DELPUB - Deleted Publication
• Completion Date: 08-Jan-2019

Relations

• Amends: CISPR 16-1-4:2010 - Specification for radio disturbance and immunity measuring apparatus and methods - Part 1-4: Radio disturbance and immunity measuring apparatus - Antennas and test sites for radiated disturbance measurements
• Effective Date: 05-Sep-2023
• Revised: CISPR 16-1-4:2019 - Specification for radio disturbance and immunity measuring apparatus and methods - Part 1-4: Radio disturbance and immunity measuring apparatus - Antennas and test sites for radiated disturbance measurements
• Effective Date: 05-Sep-2023

Standards Content (Sample)

CISPR 16-1-4 ®
Edition 3.0 2012-07
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 1-4: Radio disturbance and immunity measuring apparatus – Antennas and test
sites for radiated disturbance measurements

Spécifications des méthodes et des appareils de mesure des perturbations
radioélectriques et de l'immunité aux perturbations radioélectriques –
Partie 1-4: Appareils de mesure des perturbations radioélectriques et de l'immunité aux
perturbations radioélectriques – Antennes et emplacements d’essai pour les mesures
des perturbations rayonnées
CISPR 16-1-4:2010/A1:2012
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CISPR 16-1-4 ®
Edition 3.0 2012-07
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 1-4: Radio disturbance and immunity measuring apparatus – Antennas and test

sites for radiated disturbance measurements

Spécifications des méthodes et des appareils de mesure des perturbations

radioélectriques et de l'immunité aux perturbations radioélectriques –

Partie 1-4: Appareils de mesure des perturbations radioélectriques et de l'immunité aux

perturbations radioélectriques – Antennes et emplacements d’essai pour les mesures

des perturbations rayonnées
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX X
ICS 33.100.10; 33.100.20 ISBN 978-2-83220-150-3

– 2 – CISPR 16-1-4 Amend.1 © IEC:2012

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/995/FDIS CISPR/A/1005/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.
_____________
CISPR 16-1-4 Amend.1 © IEC:2012 – 3 –

INTRODUCTION
(to Amendment 1)
This amendment introduces the Reference Site Method (RSM). In addition to introducing new

content, Clause 5 is significantly restructured. To aid the reader in navigating this

amendment, the following table provides a comparison of subclauses in the existing

Edition 3.0 with those in this amendment. This introduction will be removed before the

subsequent edition is published.

Comparison of Clause 5 between original Edition 3.0 and Amendment 1

Original Edition 3.0 Amendment 1
5 Test sites for the measurement of radio 5 Test sites for the measurement of radio
disturbance field strength for the frequency disturbance field strength for the frequency
range of 30 MHz to 1 000 MHz range of 30 MHz to 1000 MHz
5.1 General 5.1 General
5.2 OATS 5.2 OATS
5.2.1 General 5.2.1 General
5.2.2 Weather protection enclosure 5.2.2 Weather protection enclosure
5.2.3 Obstruction-free area 5.2.3 Obstruction-free area
5.2.4 Ambient radio frequency environment of a test 5.2.4 Ambient radio frequency environment of a
site test site
5.2.5 Ground plane 5.2.5 Ground plane
5.2.6 OATS validation procedure
5.3 Test site suitability for other ground-plane test 5.3 Suitability of other test sites
sites
5.3.1 General 5.3.1 Other ground-plane test sites
5.3.2 Normalized site attenuation for alternative test 5.3.2 Test sites without ground plane (FAR)
sites
5.3.3 Site attenuation
5.3.4 Conducting ground plane
5.4 Test site suitability without ground plane 5.4 Test site validation
5.4.1 Measurement considerations for free space 5.4.1 General
test sites, as realized by fully-absorber-lined
shielded enclosures
5.4.2 Site performance 5.4.2 Overview of test site validations
5.4.3 Site validation criteria 5.4.3 Principles and values of the NSA method for
OATS and SAC
5.4.4 Reference site method for OATS and SAC
5.4.5 Validation of an OATS by the NSA method
5.4.6 Validation of a weather-protection-enclosed
OATS or a SAC
5.4.7 Site validation for FARs
5.5 Evaluation of set-up table and antenna tower 5.5 Evaluation of set-up table and antenna tower
5.5.1 General 5.5.1 General
5.5.2 Evaluation procedure for set-up table 5.5.2 Evaluation procedure for set-up table
influences influences
– 4 – CISPR 16-1-4 Amend.1 © IEC:2012

2 Normative references
Remove the existing date and remove the two existing amendment references from the

existing reference to CISPR/TR 16-3.

3.1.12
quasi-free space test-site
Replace the existing term by the new term “quasi free-space test site”.

3.1.15
semi-anechoic chamber
SAC
Replace the existing definition of this term by the following new definition:
shielded enclosure in which all surfaces except the metal floor are covered with material that
absorbs electromagnetic energy (i.e. RF absorber) in the frequency range of interest
3.1.19
test volume
Replace, in the existing definition of this term, “the FAR” by “a FAR”.
Replace, in the existing Note of this term, “quasi-free space condition” by “quasi free-space
condition”, and “the FAR” by “a FAR”.
Add, after the existing definition 3.1.21, the following new terms and definitions 3.1.22, 3.1.23,
3.1.24, 3.1.25, 3.1.26 and 3.1.27:
3.1.22
antenna factor
AF
F
a
ratio of the electric field strength of an incident plane wave to the voltage induced across a
specified load (typically 50 Ω) connected to the antenna
NOTE 1 F is affected by the load impedance connected to the antenna radiating elements, and is frequency
a
dependent. For a biconical antenna this impedance could be up to 200 Ω. For antennas with no balun the
impedance is equal to the load impedance, typically 50 Ω.
NOTE 2 Usually, the AF is defined for the plane wave incident from the direction corresponding with the maximum
gain of the antenna and at a specified point of the antenna.
-1
NOTE 3 The AF has the physical dimension of inverse metres (m ) and measured data are normally expressed
-1
in dB(m ). In radiated emission measurements, if F is known, the strength of an incident field, E, can be estimated
a
from a reading, V, of a measuring receiver connected to the antenna as follows:

E = V + F
a
-1
where E is in dB(µV/m), V is in dB(µV) and F is in dB(m ).
a
3.1.23
antenna factor, free-space
F
a fs
AF of an antenna located in a free-space environment
NOTE F is a measurand for uncertainty calculation for antenna calibration. For NSA measurements F is an
a fs a fs
input quantity for uncertainty calculation.

CISPR 16-1-4 Amend.1 © IEC:2012 – 5 –

3.1.24
antenna pair reference site attenuation

A
APR
set of site attenuation measurement results for both vertical and horizontal polarizations using

a pair of antennas separated by a defined distance at an ideal open-area test site, with one

antenna at a specified fixed height above the ground plane, and the other antenna scanned

over a specified height range in which the minimum insertion loss is recorded

NOTE 1 A is a measurand for uncertainty calculation.
APR
NOTE 2 A measurements are used for comparison to corresponding site attenuation measurements of a
APR
COMTS to evaluate the performance of the COMTS.

3.1.25
antenna reference point
midpoint of an antenna from which the distance to the EUT or second antenna is measured
NOTE The antenna reference point is either defined by the manufacturer using a marker on LPDA antennas or by
the calibration laboratory.
3.1.26
ideal open-area test site
open-area test site having a perfectly flat, perfectly conducting ground plane of infinite area,
and with no reflecting objects except the ground plane
NOTE An ideal OATS is a theoretical construct that is used in the definition of the measurand A and in the
APR
calculation of the theoretical normalized site attenuation A for ground plane sites.
N
3.1.27
reference test site
REFTS
open-area test site with metallic ground plane and tightly specified site attenuation
performance in horizontal and vertical electric field polarizations
3.2 Abbreviations
Add, before the existing abbreviation EUT of this subclause, the following new sentence:
The following are abbreviations used in this standard that are not already given in 3.1.
Add the following new abbreviation to the existing list:
RSM Reference site method
Delete, in the existing list, the entire abbreviation SAC.
4.5.3 Antenna characteristics
Replace, in item c) 2) of the list, in the paragraph after the variable list of Equation (4), the
existing text “corrections or as” by “a correction with associated”.
Delete the existing NOTE 3 in the existing item c) 3) of the list.
Replace, in the list of quantities below Equation (4), existing quantity "h " by "h " and replace
1 2
existing quantity "h " by "h "
2 1 .
– 6 – CISPR 16-1-4 Amend.1 © IEC:2012

Replace the existing Figure 1 by the following new f
...