CISPR 16-1-1:2006/AMD2:2007

Amendment 2 - Specification for radio disturbance and immunity measuring apparatus and methods - Part 1-1: Radio disturbance and immunity measuring apparatus - Measuring apparatus

Amendement 2 - Spécifications 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

General Information

• Status: Published
• Publication Date: 10-Jul-2007
• ICS: 33.100.10 - Emission
• Technical Committee: CIS/A - Radio-interference measurements and statistical methods
• Current Stage: DELPUB - Deleted Publication
• Completion Date: 28-Jan-2010

Relations

• Amends: CISPR 16-1-1:2006 - Specification for radio disturbance and immunity measuring apparatus and methods - Part 1-1: Radio disturbance and immunity measuring apparatus - Measuring apparatus
• Effective Date: 05-Sep-2023
• Revised: CISPR 16-1-1:2010 - Specification for radio disturbance and immunity measuring apparatus and methods - Part 1-1: Radio disturbance and immunity measuring apparatus - Measuring apparatus
• Effective Date: 05-Sep-2023

Standards Content (Sample)

CISPR 16-1-1
Edition 2.0 2007-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE
COMITÉ INTERNATIONAL SPÉCIAL DES PERTURBATIONS RADIOÉLECTRIQUES
AMENDMENT 2
AMENDEMENT 2
Specification for radio disturbance and immunity measuring apparatus
and methods –
Part 1-1: Radio disturbance and immunity measuring apparatus – Measuring
apparatus
Spécifications 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

CISPR 16-1-1 A2:2007
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by

any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either IEC or

IEC's member National Committee in the country of the requester.
If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication,
please contact the address below or your local IEC member National Committee for further information.

Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite
ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie
et les microfilms, sans l'accord écrit de la CEI ou du Comité national de la CEI du pays du demandeur.

Si vous avez des questions sur le copyright de la CEI ou si vous désirez obtenir des droits supplémentaires sur cette

publication, utilisez les coordonnées ci-après ou contactez le Comité national de la CEI de votre pays de résidence.

IEC Central Office
3, rue de Varembé
CH-1211 Geneva 20
Switzerland
Email: [e-mail]
Web: www.iec.ch
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigenda or an amendment might have been published.
ƒ Catalogue of IEC publications: www.iec.ch/searchpub
The IEC on-line Catalogue enables you to search by a variety of criteria (reference number, text, technical committee,…).
It also gives information on projects, withdrawn and replaced publications.
ƒ IEC Just Published: www.iec.ch/online_news/justpub
Stay up to date on all new IEC publications. Just Published details twice a month all new publications released. Available
on-line and also by email.
ƒ Electropedia: www.electropedia.org
The world's leading online dictionary of electronic and electrical terms containing more than 20 000 terms and definitions
in English and French, with equivalent terms in additional languages. Also known as the International Electrotechnical
Vocabulary online.
ƒ Customer Service Centre: www.iec.ch/webstore/custserv
If you wish to give us your feedback on this publication or need further assistance, please visit the Customer Service
Centre FAQ or contact us:
Email: [e-mail]
Tel.: [phone]
Fax: [phone]
A propos de la CEI
La Commission Electrotechnique Internationale (CEI) est la première organisation mondiale qui élabore et publie des
normes internationales pour tout ce qui a trait à l'électricité, à l'électronique et aux technologies apparentées.

A propos des publications CEI
Le contenu technique des publications de la CEI est constamment revu. Veuillez vous assurer que vous possédez
l’édition la plus récente, un corrigendum ou amendement peut avoir été publié.
ƒ Catalogue des publications de la CEI: www.iec.ch/searchpub/cur_fut-f.htm
Le Catalogue en-ligne de la CEI vous permet d’effectuer des recherches en utilisant différents critères (numéro de référence,
texte, comité d’études,…). Il donne aussi des informations sur les projets et les publications retirées ou remplacées.
ƒ Just Published CEI: www.iec.ch/online_news/justpub
Restez informé sur les nouvelles publications de la CEI. Just Published détaille deux fois par mois les nouvelles
publications parues. Disponible en-ligne et aussi par email.
ƒ Electropedia: www.electropedia.org
Le premier dictionnaire en ligne au monde de termes électroniques et électriques. Il contient plus de 20 000 termes et
définitions en anglais et en français, ainsi que les termes équivalents dans les langues additionnelles. Egalement appelé
Vocabulaire Electrotechnique International en ligne.
ƒ Service Clients: www.iec.ch/webstore/custserv/custserv_entry-f.htm
Si vous désirez nous donner des commentaires sur cette publication ou si vous avez des questions, visitez le FAQ du
Service clients ou contactez-nous:
Email: [e-mail]
Tél.: [phone]
Fax: [phone]
CISPR 16-1-1
Edition 2.0 2007-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE
COMITÉ INTERNATIONAL SPÉCIAL DES PERTURBATIONS RADIOÉLECTRIQUES
AMENDMENT 2
AMENDEMENT 2
Specification for radio disturbance and immunity measuring apparatus
and methods –
Part 1-1: Radio disturbance and immunity measuring apparatus – Measuring
apparatus
Spécifications 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
PRICE CODE
INTERNATIONALE
H
CODE PRIX
ICS 33.100.10 ISBN 2-8318-9219-8

– 2 – CISPR 16-1-1 Amend. 2 © IEC:2007

FOREWORD
This amendment has been prepared by subcommittee A of CISPR: Radio-interference

measurements and statistical methods.

The text of this amendment is based on the following documents:

FDIS Report on voting
CISPR/A/737/FDIS CISPR/A/751/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 maintenance result 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.
_____________
Page 3
Contents
Replace the title of Clause 7 with the following new title:
7 Measuring receivers with rms-average detector for the frequency range 9 kHz to 18 GHz
Replace the title of Annex A with the following new title:
Annex A (normative) Determination of response to repeated pulses of quasi-peak and rms-
average measuring receivers (Subclauses 3.2, 4.4.2, 7.3.2 and 7.5.2)
Add to the list of tables the titles of the new tables as follows:

Table 15 – VSWR requirements of input impedance
Table 16 – Bandwidth requirements
Table 17 – Minimum pulse repetition rate without overload
Table 18 – Relative pulse response of rms-average and quasi-peak measuring receivers
Table 19 – Pulse response of rms-average receiver
Table 20 – Maximum reading of rms-average measuring receivers for a pulse-modulated
sine-wave input in comparison with the response to a continuous sine-wave having the same
amplitude
CISPR 16-1-1 Amend. 2 © IEC:2007 – 3 –

Page 11
1 Scope
Replace, in existing item d), “r.m.s. measuring receiver” by “rms-average measuring receiver”.

Page 13
3 Terms and definitions
Add the following new definitions:
3.10
weighting (of e.g. impulsive disturbance)
the pulse-repetition-frequency (PRF) dependent conversion (mostly reduction) of a peak-
detected impulse voltage level to an indication that corresponds to the interference effect on
radio reception
– For the analogue receiver, the psychophysical annoyance of the interference is a
subjective quantity (audible or visual, usually not a certain number of misunderstandings
of a spoken text).
– For the digital receiver, the interference effect is an objective quantity that may be defined
by the critical bit error ratio (BER) (or bit error probability (BEP)) for which perfect error
correction can still occur or by another, objective and reproducible parameter.
3.10.1
weighting characteristic
the peak voltage level as a function of PRF for a constant effect on a specific
radiocommunication system, i.e., the disturbance is weighted by the radiocommunication
system itself
3.10.2
weighting function or weighting curve
the relationship between input peak voltage level and PRF for constant level indication of a
measuring receiver with a weighting detector, i.e. the curve of response of a measuring
receiver to repeated pulses
3.10.3
weighting factor
the value in dB of the weighting function relative to a reference PRF or relative to the peak
value
3.10.4
weighting detector
detector which provides an agreed weighting function
3.10.5
weighted disturbance measurement
measurement of disturbance using a weighting detector

– 4 – CISPR 16-1-1 Amend. 2 © IEC:2007

Page 55
7 Measuring receivers with rms detector for the frequency range 9 kHz to

18 GHz
Replace the existing title and text of Clause 7 with the following:

7 Measuring receivers with rms-average detector for the frequency range

9 kHz to 18 GHz
7.1 General
RMS-average weighting receivers employ a weighting detector that is a combination of the
rms detector (for pulse repetition frequencies above a corner frequency f ) and the average
c
detector (for pulse repetition frequencies below the corner frequency f ), thus achieving a
c
pulse response curve with the following characteristics: 10 dB/decade above the corner
frequency and 20 dB/decade below the corner frequency.
Spectrum analyzers that meet the requirements of this clause can be used for compliance
measurements.
7.2 Input impedance
The input circuit of measuring receivers shall be unbalanced. For receiver control settings
within the CISPR indicating range, the input impedance shall be nominally 50 Ω with a VSWR
not to exceed the values in Table 15.
Table 15 – VSWR requirements of input impedance
Frequency range RF attenuation VSWR
dB
9 kHz to 1 GHz 0 2,0 to 1
9 kHz to 1 GHz 10 1,2 to 1
1 GHz to 18 GHz 0 3,0 to 1
1 GHz to 18 GHz 10 2,0 to 1
Symmetric input impedance in the frequency range 9 kHz to 30 MHz: to permit symmetrical
measurements, a balanced input transformer is used. The preferred input impedance for the
frequency range 9 kHz to 150 kHz is 600 Ω. This symmetric input impedance may be
incorporated either in the relevant symmetrical artificial network necessary to couple to the
receiver or optionally in the measuring receiver.

7.3 Fundamental characteristics
7.3.1 Bandwidth
The bandwidths shall lie within the values of Table 16.

CISPR 16-1-1 Amend. 2 © IEC:2007 – 5 –

Table 16 – Bandwidth requirements

Frequency range Bandwidth
9 kHz to 150 kHz (band A) 200 Hz (B )
150 kHz to 30 MHz (band B) 9 kHz (B )
30 MHz to 1 000 MHz (bands C and D) 120 kHz (B )
1 GHz to 18 GHz (band E) 1 MHz (B )
imp
NOTE The chosen value in band E is defined as the impulse
bandwidth of the measuring receiver with a tolerance of ± 10 %.

7.3.2 Overload factor
Above the corner frequency f , specified below, the overload factor for circuits preceding the
c
1/2
detector at a pulse repetition rate of n Hz shall be 1,27(B /n) , with B in Hz. Below the
corner frequency the overload factor at a pulse repetition rate of n Hz shall be above the
1/2
value 1,27(B /f ) (f /n).
3 c c
NOTE 1 “Corner frequency” is the pulse repetition frequency above which the rms-average detector behaves like
an rms detector and below which the rms-average detector has the slope of a linear average detector.
The minimum pulse repetition rate without overload shall conform to the values given in
Table 17.
Table 17 – Minimum pulse repetition rate without overload
Frequency range of Corner Minimum pulse Ratio peak/rms
measuring receiver frequency f repetition rate -average indications
c
kHz Hz dB
9 kHz to 150 kHz (band A) 0,01 5 19
0,15 MHz to 30 MHz (band B) 0,01 5 35,5
30 MHz to 1 000 MHz (bands C and D) 0,1 31,6 40,6
1 GHz to 18 GHz (band E) 1 316 40

NOTE 2 With this type of detector it will not, in general, be possible to provide sufficient overload factor to
prevent non-linear operation of the instrument at very low pulse repetition rates for short pulses in bands C/D and
E (the response to a short single pulse is only theoretically defined in these bands).
NOTE 3 Annex A describes the calculation for the overload factor for the rms detector. Annex B describes the
determination of the pulse generator spectrum. Annex C describes the accurate measurement of the output levels

of nanosecond pulse generators.
NOTE 4 For band E, the test may be made with a pulse-modulated sine-wave signal, with an occupied bandwidth
of e.g. 2 MHz. Clause E.6 gives the specification of an applicable test signal.
7.4 Sine-wave voltage accuracy
The accuracy of measurement of sine-wave voltages shall be better than ± 2 dB (± 2,5 dB
above 1 GHz) when supplied with a sine-wave signal at 50 Ω resistive source impedance.

– 6 – CISPR 16-1-1 Amend. 2 © IEC:2007

7.5 Response to pulses
7.5.1 Construction details
The detector function can be represented by an rms detector that continuously determines

rms values during periods of time equal to the reciprocal of the corner frequency f . These
c
rms values are then passed through a second order low-pass filter that corresponds to the

critically damped indication that is specified for the quasi-peak detector, the time constant of

which is defined up to 1 GHz. For band E, the time constant is 100 ms. In case of variation
with time, the maximum output of the low-pass filter is the measurement result.

NOTE Annexes B, C and E (currently included in CISPR 16-1-1) describe
...