SIST EN 55016-1-4:2005/A1:2005
(Amendment)Specification for radio disturbance and immunity measuring apparatus and methods -- Part 1-4: Radio disturbance and immunity measuring apparatus - Ancillary equipment - Radiated disturbances
Specification for radio disturbance and immunity measuring apparatus and methods -- Part 1-4: Radio disturbance and immunity measuring apparatus - Ancillary equipment - Radiated disturbances
Superseded by EN 55016-1-4:2007
Anforderungen an Geräte und Einrichtungen sowie Festlegung der Verfahren zur Messung der hochfrequenten Störaussendung (Funkstörungen) und Störfestigkeit -- Teil 1-4: Geräte und Einrichtungen zur Messung der hochfrequenten Störaussendung (Funkstörungen) und Störfestigkeit - Zusatz-/Hilfseinrichtungen - Gestrahlte Störaussendung
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 - Matériels auxiliaires - Perturbations rayonnées
Specifikacija za merilne naprave in metode za merjenje radijskih motenj in odpornosti – 1-4. del: Merilne naprave za merjenje radijskih motenj in odpornosti – Pomožna oprema – Sevane motnje (CISPR 16-1-4:2003/A1:2004)
General Information
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Standards Content (Sample)
SLOVENSKI SIST EN 55016-1-
4:2005/A1:2005
STANDARD
julij 2005
Specifikacija za merilne naprave in metode za merjenje radijskih motenj in
odpornosti – 1-4. del: Merilne naprave za merjenje radijskih motenj in
odpornosti – Pomožna oprema – Sevane motnje (CISPR 16-1-4:2003/A1:2004)
Specification for radio disturbance and immunity measuring apparatus and methods
– Part 1-4: Radio disturbance and immunity measuring apparatus – Ancillary
equipment – Radiated disturbances (CISPR 16-1-4:2003/A1:2004)
ICS 17.240; 33.100.20 Referenčna številka
SIST EN 55016-1-4:2005/A1:2005(en)
© Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno
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EUROPEAN STANDARD EN 55016-1-4/A1
NORME EUROPÉENNE
EUROPÄISCHE NORM March 2005
ICS 33.100.10; 33.100.20
English version
Specification for radio disturbance and immunity
measuring apparatus and methods
Part 1-4: Radio disturbance and immunity measuring apparatus –
Ancillary equipment –
Radiated disturbances
(CISPR 16-1-4:2003/A1:2004)
Spécifications des méthodes et Anforderungen an Geräte und
des appareils de mesure Einrichtungen sowie Festlegung
des perturbations radioélectriques der Verfahren zur Messung
et de l'immunité aux perturbations der hochfrequenten Störaussendung
radioélectriques (Funkstörungen) und Störfestigkeit
Partie 1-4: Appareils de mesure Teil 1-4: Geräte und Einrichtungen
des perturbations radioélectriques zur Messung der hochfrequenten
et de l'immunité aux perturbations Störaussendung (Funkstörungen)
radioélectriques – und Störfestigkeit –
Matériels auxiliaires – Zusatz-/Hilfseinrichtungen –
Perturbations rayonnées Gestrahlte Störaussendung
(CISPR 16-1-4:2003/A1:2004) (CISPR 16-1-4:2003/A1:2004)
This amendment A1 modifies the European Standard EN 55016-1-4:2004; it was approved by CENELEC
on 2005-03-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations
which stipulate the conditions for giving this amendment the status of a national standard without any
alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the Central Secretariat or to any CENELEC member.
This amendment exists in three official versions (English, French, German). A version in any other language
made by translation under the responsibility of a CENELEC member into its own language and notified to the
Central Secretariat has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden,
Switzerland and United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels
© 2005 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 55016-1-4:2004/A1:2005 E
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EN 55016-1-4:2004/A1:2005 - 2 -
Foreword
The text of amendment 1:2004 to the International Standard CISPR 16-1-4:2003, prepared by
CISPR SC A, Radio-interference measurements and statistical methods, was submitted to the Unique
Acceptance Procedure and was approved by CENELEC as amendment A1 to EN 55016-1-4:2004 on
2005-03-01 without any modification.
The following dates were fixed:
– latest date by which the amendment has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2006-03-01
– latest date by which the national standards conflicting
with the amendment have to be withdrawn (dow) 2008-03-01
__________
Endorsement notice
The text of amendment 1:2004 to the International Standard CISPR 16-1-4:2003 was approved by
CENELEC as an amendment to the European Standard without any modification.
__________
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INTERNATIONAL
CISPR
ELECTROTECHNICAL
16-1-4
COMMISSION
2003
AMENDMENT 1
2004-03
INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE
Amendment 1
Specification for radio disturbance and immunity
measuring apparatus and methods –
Part 1-4:
Radio disturbance and immunity measuring
apparatus – Ancillary equipment –
Radiated disturbances
This English-language version is derived from the original
bilingual publication by leaving out all French-language
pages. Missing page numbers correspond to the French-
language pages.
IEC 2004 Copyright - all rights reserved
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 the publisher.
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch Web: www.iec.ch
PRICE CODE
L
Commission Electrotechnique Internationale
International Electrotechnical Commission
Международная Электротехническая Комиссия
For price, see current catalogue
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CISPR 16-1-4 Amend. 1 IEC:2004 – 3 –
FOREWORD
This amendment has been prepared by CISPR subcommittee A: Radio interference
measurements and statistical methods.
The text of this amendment is based on the following documents:
FDIS Report on voting
CISPR/A/499/FDIS CISPR/A/514/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 the base publication and its amendments will
remain unchanged until 2005. At this date, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
_____________
Page 15
3 Definitions
Add, after definition 3.10 on page 17, the following new definitions:
3.11
fully anechoic room
FAR
shielded enclosure, the internal surfaces of which are lined with radio-frequency absorbing
material (i.e. RF absorber), which absorbs electromagnetic energy in the frequency range of
interest
3.12
quasi-free space test-site
test-site for which the site attenuation measured with vertically polarized tuned dipoles
deviates by no more than ± 1 dB from the calculated free-space attenuation at any frequency
3.13
test volume
volume in the FAR in which the EUT is positioned
NOTE In this volume the quasi-free space condition is met and this volume is typically 0,5 m or more from the
absorbing material of the FAR.
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CISPR 16-1-4 Amend. 1 IEC:2004 – 5 –
Page 45
5.7 Alternative test site suitability
Replace the title of this subclause by the following new title:
5.7 Test site suitability with ground-plane
Page 57
Add, after Table 2, the following new subclause:
5.8 Test site suitability without ground-plane
The procedure for test sites without ground-plane in the frequency range 30 MHz to
1 000 MHz is as follows.
5.8.1 Measurement considerations for free space test sites, as realized by fully
absorber-lined shielded enclosures
A fully absorber lined shielded enclosure, also known as a fully anechoic chamber (FAC), or a
fully anechoic room (FAR), may be used for radiated emission measurements. When the FAR
method is used, appropriate radiated emission limits shall be defined in relevant standards
(generic, product or product family standards). Compliance with the radio services protection
requirements (limits) shall be established for FARs in a similar way as for tests on an OATS.
A FAR is intended to simulate a free space environment such that only the direct ray from the
transmitting antenna or EUT reaches the receiving antenna. All indirect and reflected waves
shall be minimized with the use of appropriate absorbing material on all walls, the ceiling and
the floor of the FAR.
5.8.2 Site performance
Site performance may be validated by two methods which are described below – the site
reference method and the NSA method.
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CISPR 16-1-4 Amend. 1 IEC:2004 – 7 –
5.8.2.1 Theoretical normalized site attenuation
40
30
20
10
30 m
0
10 m
–10
5 m
3 m
–20
–30
–40
–50
10 100 1 000
Frequency MHz
IEC 266/04
Figure 9 – Graph of theoretical free-space NSA as a function of the frequency for
different measurement distances (see equation 4)
NOTE Frequencies below 110 MHz for 3 m measurement and below 60 MHz for 5 m measurement distances
include near field effects. These must be calculated for each individual test site.
The following describes the NSA theory for infinitely small antennas.
Site attenuation (SA) is the transmission loss measured between the connectors of two
antennas on a particular site. For a free space environment, SA (in dB) can be approximated
1)
by Equation (2)
5Z d
0
SA = 20log − 20log f + AF + AF (2)
10 10 m R T
2π
1 1
1− +
2 4
()βd ()βd
___________
1)
Reference: GARBE, H. New EMC Test Facilities for Radiation Measurements. Review of Radio Science
1999-2002. John Wiley & Sons, New York, 2002
NSA dB
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CISPR 16-1-4 Amend. 1 IEC:2004 – 9 –
where
AF , AF are the antenna factors of the receive and transmit antennas in dB/m;
R T
d is the distance between the phase centres of both antennas in metres;
Z is the reference impedance (i.e. 50 Ω);
0
ß is defined as 2π /λ; and
f is the frequency in MHz.
m
The theoretical normalized site attenuation (NSA) in dB is defined as site attenuation with
respective antenna factors subtracted, thus:
5Z
d
0
NSA = 20log − 20log f (3)
calc 10 10 m
2π
1 1
1− +
2 4
() ()
βd βd
Below 60 MHz at a 5 m distance or 110 MHz at a 3 m distance, it is necessary to apply near
field correction factors for each of the required test positions of Table 3 for comparison with
the theoretical NSA of Figure 9 and Equation (2). Near field correction factors are specific to
the antennas, test distance, and test volume used, and therefore must be obtained by using a
numerical modelling code such as NEC. Alternatively the site reference method of 5.8.2.2.1
provides cancellation of near field terms if the same antennas and frequencies are used for
both the site reference measurement and FAR validation.
For measurement distances of 10 m and 30 m, the near-field terms in Equation (3) may be
omitted, and the equation simplifies as follows:
5Z d
0
NSA = 20log − 20log f (4)
calc 10 10 m
2π
If simplified Equation (4), is used instead of Equation (2) the error introduced is less than
0,1dB at frequencies above 60 MHz for 5 m distance and above 110 MHz for 3 m distance.
The error will be >0,1 dB below these frequencies due to near-field effects. For a 3 m distance
the maximum error is 1 dB at 30 MHz. To reduce this error Equation (2) should be used.
5.8.2.2 Site validation procedure
The NSA shall satisfy the requirement of 5.8.3 over a cylindrical test volume generated by the
rotation of the EUT on the turntable. In this context “the EUT“ includes all components of a
multi-unit EUT and the interconnecting cables. Table 3 defines the maximum height and
diameter (h = d ) of the test volume as a function of test distance. This ratio between
max max
diameter and test distance ensures an acceptable uncertainty in EUT emissions testing.
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CISPR 16-1-4 Amend. 1 IEC:2004 – 11 –
Table 3 – Maximum dimensions of test volume versus test distance
Test distance
Maximum diameter d
max
and height h of the test
max D
nominal
volume
m
m
1,5 3,0
2,5 5,0
5,0 10,0
A single position SA (site attenuation) measurement may not be sufficient to pick up possible
reflections from the room construction and/or absorbing material lining the walls, floor, ceiling
and turntable of the FAR.
The fully anechoic room SA measurements and validation shall therefore be performed at 15
measurement positions for both horizontal and vertical antenna polarizations of the transmit
antenna in the test volume (see Figure 10):
– at three heights of the test volume: bottom, middle and top;
– at 5 positions in all 3 horizontal planes: centre, left, right, front and rear positions in each
horizontal plane. The rear position may be omitted if the distance between rear position
and absorbers is more than 0,5 m. During EUT testing, the rear position on the turntable is
also turned to the front, and the contribution of the back reflection will then not affect the
maximum signal.
For SA measurements two broadband antennas shall be used: one transmit antenna with its
reference point at the measurement positions of the test volume and one recei
...
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