CISPR 16-1-1:2015

CISPR 16-1-1 ®
Edition 4.0 2015-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE

COMITÉ INTERNATIONAL SPÉCIAL DES PERTURBATIONS RADIOÉLECTRIQUES

BASIC EMC PUBLICATION
PUBLICATION FONDAMENTALE EN CEM
Specification for radio disturbance and immunity measuring apparatus and
methods –
Part 1-1: Radio disturbance and immunity measuring apparatus – Measuring
apparatus
Spécification des méthodes et des appareils de mesure des perturbations
radioélectriques et de l'immunité aux perturbations radioélectriques –
Partie 1-1: Appareils de mesure des perturbations radioélectriques et de
l’immunité aux perturbations radioélectriques – Appareils de mesure

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CISPR 16-1-1 ®
Edition 4.0 2015-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE

COMITÉ INTERNATIONAL SPÉCIAL DES PERTURBATIONS RADIOÉLECTRIQUES

BASIC EMC PUBLICATION
PUBLICATION FONDAMENTALE EN CEM

Specification for radio disturbance and immunity measuring apparatus and

methods –
Part 1-1: Radio disturbance and immunity measuring apparatus – Measuring

apparatus
Spécification des méthodes et des appareils de mesure des perturbations

radioélectriques et de l'immunité aux perturbations radioélectriques –

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

l’immunité aux perturbations radioélectriques – Appareils de mesure

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.100.10 ISBN 978-2-8322-2922-4

 IEC 2018
INTERNATIONAL ELECTROTECHNICAL COMMISSION

____________
CISPR 16-1-1
Edition 4.0  2015-09
SPECIFICATION FOR RADIO DISTURBANCE

AND IMMUNITY MEASURING APPARATUS AND METHODS –

Part 1-1: Radio disturbance and immunity measuring apparatus –
Measuring apparatus
INTERPRETATION SHEET 1
This interpretation sheet 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 interpretation sheet is based on the following documents:
FDIS Report on voting
CIS/A/1244/FDIS CIS/A/1255/RVD

Full information on the voting for the approval of this interpretation sheet can be found in the
report on voting indicated in the above table.
___________
INTRODUCTION:
CISPR/A/1118/FDIS was approved (see CISPR/A/1135/RVD) and consequently the
corresponding international standard, CISPR 16-1-1:2015 (Edition 4.0) was published on
22 September 2015.
However, seven National Committees had submitted a negative vote. Most concerns were
related to the measuring receiver specifics covered in K.4. That clause states:
“This standard specifies measuring receiver requirements using a “black box” approach.
This means that the instrument shall show a specific response when a defined signal is
applied to its input. Therefore, the demonstration of compliance of measuring receivers
with specifications defined in this standard can be provided through the manufacturer’s
calibration process or the procedures and measuring equipment defined in this standard.
In case compliance of a measuring receiver is determined with the specifications in this
standard, the following minimum set of parameters shown in Table K.1 shall be included in
the verification process.”
ICS 33.100.10
– 2 – CISPR 16-1-1:2015/ISH1:2018

 IEC 2018
It was argued that the wording in these two cited paragraphs might be misinterpreted in such

a way that the specifications in CISPR 16-1-1 are not met when using the manufacturer’s

calibration process. Furthermore, concerns were raised that the wording may have the effect

that only manufacturers’ calibration procedures can be used to show compliance with the

specifications in CISPR 16-1-1.

Because of these concerns, K.4 could benefit from further clarification. An interpretation sheet

would be helpful to users of the standard, with the intent that this clarification would be

published in a future amendment to the standard.

This information does not change the standard; it serves only to clarify the points noted.

INTERPRETATION:
Demonstration of compliance with CISPR 16-1-1
For demonstrating compliance with CISPR 16-1-1 using the manufacturer’s calibration
process, the specifications in CISPR 16-1-1 shall be met, including verification of the
minimum set of parameters listed in Table K.1.
It is permissible to use either the manufacturer’s calibration process or a calibration
laboratory’s own process that is applying the procedures and measuring equipment defined in
this standard. The user of CISPR 16-1-1 is responsible for deciding which of these two
approaches to use, both which are considered equivalent.

___________
– 2 – CISPR 16-1-1:2015 © IEC 2015

CONTENTS
FOREWORD . 7

INTRODUCTION . 9

1 Scope . 10

2 Normative references . 10

3 Terms and definitions . 11

4 Quasi-peak measuring receivers for the frequency range 9 kHz to 1 000 MHz . 15

4.1 General . 15
4.2 Input impedance . 15
4.3 Sine-wave voltage accuracy . 15
4.4 Response to pulses . 16
4.4.1 Amplitude relationship (absolute calibration) . 16
4.4.2 Variation with repetition frequency (relative calibration) . 16
4.5 Selectivity . 20
4.5.1 Overall selectivity (passband) . 20
4.5.2 Intermediate frequency rejection ratio . 21
4.5.3 Image frequency rejection ratio . 21
4.5.4 Other spurious responses . 23
4.6 Limitation of intermodulation effects . 23
4.7 Limitation of receiver noise and internally generated spurious signals . 24
4.7.1 Random noise . 24
4.7.2 Continuous wave . 25
4.8 Screening effectiveness . 25
4.8.1 General . 25
4.8.2 Limitation of radio-frequency emissions from the measuring receiver . 25
4.9 Facilities for connection to a discontinuous disturbance analyzer . 26
5 Measuring receivers with peak detector for the frequency range 9 kHz to 18 GHz . 26
5.1 General . 26
5.2 Input impedance . 26
5.3 Fundamental characteristics . 26
5.3.1 Bandwidth . 26
5.3.2 Charge and discharge time constants ratio . 27
5.3.3
...