CISPR TR 16-3:2010/AMD2:2015
(Amendment)Amendment 2 - Specification for radio disturbance and immunity measuring apparatus and methods - Part 3: CISPR technical reports
Amendment 2 - Specification for radio disturbance and immunity measuring apparatus and methods - Part 3: CISPR technical reports
Applies to fittings for overhead lines of nominal voltage above 45 kV. It may also be applied to fittings for overhead lines of lower nominal voltage and to similar fittings for substations.[
]The contents of the corrigendum of September 1998 have been included in this copy.
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CISPR TR 16-3 ®
Edition 3.0 2015-09
TECHNICAL
REPORT
colour
inside
INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE
AMENDMENT 2
Specification for radio disturbance and immunity measuring apparatus and
methods –
Part 3: CISPR technical reports
CISPR TR 16-3:2010-08/AMD2:2015-09(en)
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.
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3, rue de Varembé Fax: +41 22 919 03 00
CH-1211 Geneva 20 info@iec.ch
Switzerland 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.
IEC Catalogue - webstore.iec.ch/catalogue Electropedia - www.electropedia.org
The stand-alone application for consulting the entire The world's leading online dictionary of electronic and
bibliographical information on IEC International Standards, electrical terms containing more than 30 000 terms and
Technical Specifications, Technical Reports and other definitions in English and French, with equivalent terms in 15
documents. Available for PC, Mac OS, Android Tablets and additional languages. Also known as the International
iPad. Electrotechnical Vocabulary (IEV) online.
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The advanced search enables to find IEC publications by a More than 60 000 electrotechnical terminology entries in
variety of criteria (reference number, text, technical English and French extracted from the Terms and Definitions
committee,…). It also gives information on projects, replaced clause of IEC publications issued since 2002. Some entries
and withdrawn publications. have been collected from earlier publications of IEC TC 37,
77, 86 and CISPR.
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CISPR TR 16-3 ®
Edition 3.0 2015-09
TECHNICAL
REPORT
colour
inside
INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE
AMENDMENT 2
Specification for radio disturbance and immunity measuring apparatus and
methods –
Part 3: CISPR technical reports
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.100.10; 33.100.20 ISBN 978-2-8322-2884-5
– 2 – CISPR TR 16-3:2010/AMD2:2015
© IEC 2015
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:
DTR Report on voting
CISPR/A/1102/DTR CISPR/A/1109/RVC
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.
A bilingual version of this publication may be issued at a later date.
IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.
_____________
© IEC 2015
3.2 Abbreviations
Add, to the existing list of abbreviations, the following new abbreviations:
CDN Coupling decoupling network
CDNE CDN for emission measurement
CM Common mode
DM Differential mode
RRT Round robin test
Add, after the existing subclause 4.11.2 added by Amendment 1, the following new subclause:
4.12 Background on CDNE equipment and measurement method
4.12.1 General
The CDN measurement method was originally developed for assessment of radiated
disturbances of lighting equipment from 30 MHz to 300 MHz. In October 2006 the CDN
method was adopted by a first amendment of Edition 7 of CISPR 15, published in 2006 [91].
A CISPR joint Task Force between CISPR SC/A and CISPR SC/F on the ‘CDN measurement
method of radio frequency disturbances for lighting equipment in the frequency range 30 MHz
to 300 MHz’ (CDNE JTF A/F) was established in 2008, and tasked with transferring the CDN
method of emission measurement in the frequency range 30 MHz to 300 MHz to the
CISPR 16 series. This was to give the method a more generic status and enable use for other
types of equipment. An additional aim was to improve the CDN method uncertainties.
The CDNE JTF developed specifications and measurement methods for a CDNE, which is the
CDN for emission measurement. Between 2008 and 2014 the CDNE specification, the
associated measurement method, the measurement instrumentation uncertainties and the
correlation with the classical radiated measurement method were implemented in respectively
CISPR 16-1-2 [95], CISPR 16-2-1 [8], CISPR 16-4-2 [96] and CISPR 16-4-5 [97].
The following subclauses give background information and rationales on the CDN and the
CDNE equipment and measurement method.
4.12.2 Historical overview
4.12.2.1 Situation around 1996
Before the first amendment to Edition 7, lighting products were subject to conducted and
radiated RF disturbance measurements according to CISPR 15 [98] in the frequency range
below 30 MHz. Radiated disturbance measurements above 30 MHz according to CISPR 22
[99] were carried out on a voluntary basis to assure quality and to avoid complaints in specific
environments. Generally the emission levels of lighting products with bipolar circuit
technology were negligible for frequencies above 30 MHz.
In 1996, within the EMC group of Philips Research in Eindhoven, the Netherlands, an
investigation was started on possible workbench methods as an alternative for the radiated
tests in the frequency range 30 MHz to 300 MHz. The CDN, which is known from RF immunity
tests in the range of 150 kHz to 80 MHz according to IEC 61000-4-6 [15], seemed a suitable
candidate for application to measurement of RF disturbances as well. Therefore, a method
using the CDN for disturbance measurements was developed and investigated. Especially the
– 4 – CISPR TR 16-3:2010/AMD2:2015
© IEC 2015
relationship with the established radiated disturbance measurement method in a SAC was
explored.
It is generally accepted that correlation between two test methods only makes sense when
both methods have good reproducibility and low uncertainty. The established radiated RF
disturbance measurement method has a fairly large compliance uncertainty (7 dB) due to
variability in cable layout and termination, while the CDN method has a moderate compliance
uncertainty (4 dB) provided that the EUT is small and the cable length between the CDN and
EUT is limited. Still, a reasonable correlation between the CDN method and the 3-m and 10-m
radiated method was demonstrated for luminaires of different sizes.
4.12.2.2 CDN concept for disturbance measurements introduced in 1999
The feasibility and concept of the CDN method was presented in a paper at the 1999 Zurich
EMC conference by Stef Worm [93]. In that paper, the radiated disturbance measurement
method in a 3 m SAC and the CDN method (refer to Figure 200) are compared. It is
demonstrated by modelling that the CM current in a cable (single wire – see NOTE 1)
connected to the EUT is a good metric for the E-field measured using the 3 m SAC/OATS
method.
NOTE 1 The single wire and its impedance is the model of a cable with one or more wires including the protective
earth wire. The CM impedance mentioned in the report represents the “total” CM impedance of the cable.
NOTE 2 At the time of this investigation the 3 m SAC/OATS was used as reference. Later it was agreed more
formally (see CISPR 16-4-5 [97] ) that the 10 m SAC/OATS is the reference, called the established test method.
Note that the cable does not necessarily need to be a mains cable and is not connected to a
network. The E-field/CM-current ratio depends on the termination impedance. Measurement
results [92] have shown (see Figure 201) that the response is reasonably flat if the
termination impedance of the cable (single wire) equals 150 Ω. Also the impact of cable layout
and set-up of the EUT and CDN has been investigated. The 150-Ω impedance also provides a
good match with the disturbance source, which prevents standing waves. Different options for
the 150-Ω impedance have been compared in [93], where it was concluded that the best
candidate for the 150-Ω termination impedance was the existing CDN used for immunity tests.
So, in the original and basic concept of the CDN method, the purpose of the CM impedance of
150 Ω is to enable a good match (no standing waves) with the disturbance source. With this
property, a relatively simple relation between the E-field limit and the limit applicable for the
CDN method could be derived and implemented in Table B.1 of CISPR 15:2013 [98]. It has
not been the intention that the CDN emulates the CM impedance and LCL − or whatever other
property of the network to which the (mains) cable could be connected.
The CDNE method is an alternative method to assess radiated disturbance of a product in the
frequency range of 30 MHz to 300 MHz, under specific limitations of the product
characteristics. Hence it addresses the radiation coming from the enclosure port of the EUT.
Another example of a radiated disturbance assessment method is the absorbing clamp
method in the frequency range between 30 MHz and 1 000 MHz.
© IEC 2015
10 MHz osc.
80 cm
Termination
CISPR
3 m
receiver
10 MHz
CISPR
oscillator
receiver
10 cm
Cable
CDN
IEC
IEC
3 m SAC/OATS-method CDN method
Figure 200 – Equivalent radiated measurement methods (30 MHz to 300 MHz)
R = 0
R = ∞
30 50 70 100 230
f (MHz)
IEC
The red curve is the 150-Ω termination.
Figure 201 – Measured relationship between field strength E
z
for various termination resistances R
and CM current I
cm
4.12.2.3 Derivation of the CDN limit
The asymptotic curve given in Figure 202 (using the equations given in [92]; matched case
Lim,3 m
Γ =0), is used to translate the limit levels E of the existing 3 m (see NOTE 2 of
Rad
Lim
I
4.12.2.2) radiated disturbance limits to the limit for the CM current of the CDN test
CDN
method limit with the following equation:
Lim,3m
E
Lim
Rad
I =
(106)
CDN
E
ratio
I
–1
E /I (dB, Ωm )
z cm
– 6 – CISPR TR 16-3:2010/AMD2:2015
© IEC 2015
E
is the average relationship between field strength and CM current for
where the ratio
I
various CM-impedance terminations, i.e. the black straight dashed line shown in Figure 202.
The CDN current limit is expressed in terms of terminal voltage limit across a 150-Ω
Lim
impedance ( V ), so
CDN
Lim,3 m
E
Lim Rad
V = 150 Ω×
(107)
CDN
E
ratio
I
For example, a radiated disturbance limit of 40 dB(µV/m) at 3 m and 100 MHz translates to a
terminal voltage limit of 20 lg (150) + 40 − 30 = 54 dB(µV). The CISPR 15 radiated limits
translate in this way to the values given in Table B.1 of CISPR 15:2013 [98]; see also Figure
203.
(in dB) and the value of the attenuator external to
Note that the voltage division factor F
CDNE
the CDN are added to achieve the CM-terminal voltage across 150 Ω, i.e. -20 lg(50/150) + dB-
value of the external attenuator (6 dB):
F = -20 lg (50/150) + 6 (108)
CDNE
The CDNE-disturbance level V , then can be calculated as follows:
CDNE
= V + F (109)
V
CDNE meas CDNE
where V and V are in dB(µV).
CDNE meas
R = 0
r = –1
R = ∞
r = 0
r = 1
Used for limit conversion
30 100 200 300
Frequency (MHz)
IEC
The black straight dashed lines are an asymptotic boundary curve used for translation of the limit.
Figure 202 – Modelled relationship between field strength E and CM current I using
z cm
EUT height 0,8 m, measurement distance 3 m, receive antenna height 1 m
CDN conversion factor (dBΩ/m)
© IEC 2015
30 100 200 300
f (MHz)
IEC
Figure 203 – Limit for the terminal voltage at the CDN
4.12.2.4 2006: first implementation of the CDN method in CISPR 15
In October 2006 the CDN method was adopted in the first amendment of Edition 7 of CISPR
15 [91] published in 2006 [91].
The CDN measurement method, the CDN specification and the CDN limits were included in a
separate normative Annex B of CISPR 15:2005/AMD1:2006.
Basically, the CDN should satisfy the specifications of IEC 61000-4-6 [15], and the
specification of th
...
CISPR TR 16-3 ®
Edition 3.0 2015-09
TECHNICAL
REPORT
colour
inside
INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE
AMENDMENT 2
Specification for radio disturbance and immunity measuring apparatus and
methods –
Part 3: CISPR technical reports
CISPR TR 16-3:2010-08/AMD2:2015-09(en)
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.
IEC Central Office Tel.: +41 22 919 02 11
3, rue de Varembé Fax: +41 22 919 03 00
CH-1211 Geneva 20 info@iec.ch
Switzerland 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.
IEC Catalogue - webstore.iec.ch/catalogue Electropedia - www.electropedia.org
The stand-alone application for consulting the entire The world's leading online dictionary of electronic and
bibliographical information on IEC International Standards, electrical terms containing more than 30 000 terms and
Technical Specifications, Technical Reports and other definitions in English and French, with equivalent terms in 15
documents. Available for PC, Mac OS, Android Tablets and additional languages. Also known as the International
iPad. Electrotechnical Vocabulary (IEV) online.
IEC publications search - www.iec.ch/searchpub IEC Glossary - std.iec.ch/glossary
The advanced search enables to find IEC publications by a More than 60 000 electrotechnical terminology entries in
variety of criteria (reference number, text, technical English and French extracted from the Terms and Definitions
committee,…). It also gives information on projects, replaced clause of IEC publications issued since 2002. Some entries
and withdrawn publications. have been collected from earlier publications of IEC TC 37,
77, 86 and CISPR.
IEC Just Published - webstore.iec.ch/justpublished
Stay up to date on all new IEC publications. Just Published IEC Customer Service Centre - webstore.iec.ch/csc
details all new publications released. Available online and If you wish to give us your feedback on this publication or
also once a month by email. need further assistance, please contact the Customer Service
Centre: csc@iec.ch.
CISPR TR 16-3 ®
Edition 3.0 2015-09
TECHNICAL
REPORT
colour
inside
INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE
AMENDMENT 2
Specification for radio disturbance and immunity measuring apparatus and
methods –
Part 3: CISPR technical reports
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.100.10; 33.100.20 ISBN 978-2-8322-2884-5
– 2 – CISPR TR 16-3:2010/AMD2:2015
© IEC 2015
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:
DTR Report on voting
CISPR/A/1102/DTR CISPR/A/1109/RVC
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.
A bilingual version of this publication may be issued at a later date.
IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.
_____________
© IEC 2015
3.2 Abbreviations
Add, to the existing list of abbreviations, the following new abbreviations:
CDN Coupling decoupling network
CDNE CDN for emission measurement
CM Common mode
DM Differential mode
RRT Round robin test
Add, after the existing subclause 4.11.2 added by Amendment 1, the following new subclause:
4.12 Background on CDNE equipment and measurement method
4.12.1 General
The CDN measurement method was originally developed for assessment of radiated
disturbances of lighting equipment from 30 MHz to 300 MHz. In October 2006 the CDN
method was adopted by a first amendment of Edition 7 of CISPR 15, published in 2006 [91].
A CISPR joint Task Force between CISPR SC/A and CISPR SC/F on the ‘CDN measurement
method of radio frequency disturbances for lighting equipment in the frequency range 30 MHz
to 300 MHz’ (CDNE JTF A/F) was established in 2008, and tasked with transferring the CDN
method of emission measurement in the frequency range 30 MHz to 300 MHz to the
CISPR 16 series. This was to give the method a more generic status and enable use for other
types of equipment. An additional aim was to improve the CDN method uncertainties.
The CDNE JTF developed specifications and measurement methods for a CDNE, which is the
CDN for emission measurement. Between 2008 and 2014 the CDNE specification, the
associated measurement method, the measurement instrumentation uncertainties and the
correlation with the classical radiated measurement method were implemented in respectively
CISPR 16-1-2 [95], CISPR 16-2-1 [8], CISPR 16-4-2 [96] and CISPR 16-4-5 [97].
The following subclauses give background information and rationales on the CDN and the
CDNE equipment and measurement method.
4.12.2 Historical overview
4.12.2.1 Situation around 1996
Before the first amendment to Edition 7, lighting products were subject to conducted and
radiated RF disturbance measurements according to CISPR 15 [98] in the frequency range
below 30 MHz. Radiated disturbance measurements above 30 MHz according to CISPR 22
[99] were carried out on a voluntary basis to assure quality and to avoid complaints in specific
environments. Generally the emission levels of lighting products with bipolar circuit
technology were negligible for frequencies above 30 MHz.
In 1996, within the EMC group of Philips Research in Eindhoven, the Netherlands, an
investigation was started on possible workbench methods as an alternative for the radiated
tests in the frequency range 30 MHz to 300 MHz. The CDN, which is known from RF immunity
tests in the range of 150 kHz to 80 MHz according to IEC 61000-4-6 [15], seemed a suitable
candidate for application to measurement of RF disturbances as well. Therefore, a method
using the CDN for disturbance measurements was developed and investigated. Especially the
– 4 – CISPR TR 16-3:2010/AMD2:2015
© IEC 2015
relationship with the established radiated disturbance measurement method in a SAC was
explored.
It is generally accepted that correlation between two test methods only makes sense when
both methods have good reproducibility and low uncertainty. The established radiated RF
disturbance measurement method has a fairly large compliance uncertainty (7 dB) due to
variability in cable layout and termination, while the CDN method has a moderate compliance
uncertainty (4 dB) provided that the EUT is small and the cable length between the CDN and
EUT is limited. Still, a reasonable correlation between the CDN method and the 3-m and 10-m
radiated method was demonstrated for luminaires of different sizes.
4.12.2.2 CDN concept for disturbance measurements introduced in 1999
The feasibility and concept of the CDN method was presented in a paper at the 1999 Zurich
EMC conference by Stef Worm [93]. In that paper, the radiated disturbance measurement
method in a 3 m SAC and the CDN method (refer to Figure 200) are compared. It is
demonstrated by modelling that the CM current in a cable (single wire – see NOTE 1)
connected to the EUT is a good metric for the E-field measured using the 3 m SAC/OATS
method.
NOTE 1 The single wire and its impedance is the model of a cable with one or more wires including the protective
earth wire. The CM impedance mentioned in the report represents the “total” CM impedance of the cable.
NOTE 2 At the time of this investigation the 3 m SAC/OATS was used as reference. Later it was agreed more
formally (see CISPR 16-4-5 [97] ) that the 10 m SAC/OATS is the reference, called the established test method.
Note that the cable does not necessarily need to be a mains cable and is not connected to a
network. The E-field/CM-current ratio depends on the termination impedance. Measurement
results [92] have shown (see Figure 201) that the response is reasonably flat if the
termination impedance of the cable (single wire) equals 150 Ω. Also the impact of cable layout
and set-up of the EUT and CDN has been investigated. The 150-Ω impedance also provides a
good match with the disturbance source, which prevents standing waves. Different options for
the 150-Ω impedance have been compared in [93], where it was concluded that the best
candidate for the 150-Ω termination impedance was the existing CDN used for immunity tests.
So, in the original and basic concept of the CDN method, the purpose of the CM impedance of
150 Ω is to enable a good match (no standing waves) with the disturbance source. With this
property, a relatively simple relation between the E-field limit and the limit applicable for the
CDN method could be derived and implemented in Table B.1 of CISPR 15:2013 [98]. It has
not been the intention that the CDN emulates the CM impedance and LCL − or whatever other
property of the network to which the (mains) cable could be connected.
The CDNE method is an alternative method to assess radiated disturbance of a product in the
frequency range of 30 MHz to 300 MHz, under specific limitations of the product
characteristics. Hence it addresses the radiation coming from the enclosure port of the EUT.
Another example of a radiated disturbance assessment method is the absorbing clamp
method in the frequency range between 30 MHz and 1 000 MHz.
© IEC 2015
10 MHz osc.
80 cm
Termination
CISPR
3 m
receiver
10 MHz
CISPR
oscillator
receiver
10 cm
Cable
CDN
IEC
IEC
3 m SAC/OATS-method CDN method
Figure 200 – Equivalent radiated measurement methods (30 MHz to 300 MHz)
R = 0
R = ∞
30 50 70 100 230
f (MHz)
IEC
The red curve is the 150-Ω termination.
Figure 201 – Measured relationship between field strength E
z
for various termination resistances R
and CM current I
cm
4.12.2.3 Derivation of the CDN limit
The asymptotic curve given in Figure 202 (using the equations given in [92]; matched case
Lim,3 m
Γ =0), is used to translate the limit levels E of the existing 3 m (see NOTE 2 of
Rad
Lim
I
4.12.2.2) radiated disturbance limits to the limit for the CM current of the CDN test
CDN
method limit with the following equation:
Lim,3m
E
Lim
Rad
I =
(106)
CDN
E
ratio
I
–1
E /I (dB, Ωm )
z cm
– 6 – CISPR TR 16-3:2010/AMD2:2015
© IEC 2015
E
is the average relationship between field strength and CM current for
where the ratio
I
various CM-impedance terminations, i.e. the black straight dashed line shown in Figure 202.
The CDN current limit is expressed in terms of terminal voltage limit across a 150-Ω
Lim
impedance ( V ), so
CDN
Lim,3 m
E
Lim Rad
V = 150 Ω×
(107)
CDN
E
ratio
I
For example, a radiated disturbance limit of 40 dB(µV/m) at 3 m and 100 MHz translates to a
terminal voltage limit of 20 lg (150) + 40 − 30 = 54 dB(µV). The CISPR 15 radiated limits
translate in this way to the values given in Table B.1 of CISPR 15:2013 [98]; see also Figure
203.
(in dB) and the value of the attenuator external to
Note that the voltage division factor F
CDNE
the CDN are added to achieve the CM-terminal voltage across 150 Ω, i.e. -20 lg(50/150) + dB-
value of the external attenuator (6 dB):
F = -20 lg (50/150) + 6 (108)
CDNE
The CDNE-disturbance level V , then can be calculated as follows:
CDNE
= V + F (109)
V
CDNE meas CDNE
where V and V are in dB(µV).
CDNE meas
R = 0
r = –1
R = ∞
r = 0
r = 1
Used for limit conversion
30 100 200 300
Frequency (MHz)
IEC
The black straight dashed lines are an asymptotic boundary curve used for translation of the limit.
Figure 202 – Modelled relationship between field strength E and CM current I using
z cm
EUT height 0,8 m, measurement distance 3 m, receive antenna height 1 m
CDN conversion factor (dBΩ/m)
© IEC 2015
30 100 200 300
f (MHz)
IEC
Figure 203 – Limit for the terminal voltage at the CDN
4.12.2.4 2006: first implementation of the CDN method in CISPR 15
In October 2006 the CDN method was adopted in the first amendment of Edition 7 of CISPR
15 [91] published in 2006 [91].
The CDN measurement method, the CDN specification and the CDN limits were included in a
separate normative Annex B of CISPR 15:2005/AMD1:2006.
Basically, the CDN should satisfy the specifications of IEC 61000-4-6 [15], and the
specification of the CM-impedance of 150 Ω was extended to 300 MHz.
The limit given in CISPR 15 is the same as given in Figure 203.
4.12.3 From CDN to CDNE
4.12.3.1 Shortcomings
After applying the CDN method for testing of lighting equipment fo
...
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