SIST EN 55016-2-1:2009/A2:2013
(Amendment)Specification for radio disturbance and immunity measuring apparatus and methods - Part 2-1: Methods of measurement of disturbances and immunity - Conducted disturbance measurements
Specification for radio disturbance and immunity measuring apparatus and methods - Part 2-1: Methods of measurement of disturbances and immunity - Conducted disturbance measurements
This part of CISPR 16 is designated a basic standard, which specifies the methods of measurement of disturbance phenomena in general in the frequency range 9 kHz to 18 GHz and especially of conducted disturbance phenomena in the frequency range 9 kHz to 30 MHz.
Anforderungen an Geräte und Einrichtungen sowie Festlegung der Verfahren zur Messung der hochfrequenten Störaussendung (Funkstörungen) und Störfestigkeit - Teil 2-1: Verfahren zur Messung der hochfrequenten Störaussendung (Funkstörungen) und Störfestigkeit - Messung der leitungsgeführten Störaussendung
Spécifications des méthodes et des appareils de mesure des perturbations radioélectriques et de l'immunité aux perturbations radioélectriques - Partie 2-1: Méthodes de mesure des perturbations et de l'immunité - Mesures des perturbations conduites
Specifikacija za merilne naprave in metode za merjenje radijskih motenj in odpornosti - 2-1. del: Metode za merjenje radijskih motenj in odpornosti - Merjenje motenj po vodnikih - Dopolnilo A2
Ta del CISPR 16 je določen za osnovni standard, ki opredeljuje metode za splošno merjenje pojava motenj v frekvenčnem območju od 9 kHz do 18 GHz in še predvsem v frekvenčnem območju od 9 kHz do 30 MHz.
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 55016-2-1:2009/A2:2013
01-september-2013
Specifikacija za merilne naprave in metode za merjenje radijskih motenj in
odpornosti - 2-1. del: Metode za merjenje radijskih motenj in odpornosti - Merjenje
motenj po vodnikih - Dopolnilo A2
Specification for radio disturbance and immunity measuring apparatus and methods -
Part 2-1: Methods of measurement of disturbances and immunity - Conducted
disturbance measurements
Anforderungen an Geräte und Einrichtungen sowie Festlegung der Verfahren zur
Messung der hochfrequenten Störaussendung (Funkstörungen) und Störfestigkeit - Teil
2-1: Verfahren zur Messung der hochfrequenten Störaussendung (Funkstörungen) und
Störfestigkeit - Messung der leitungsgeführten Störaussendung
Spécifications des méthodes et des appareils de mesure des perturbations
radioélectriques et de l'immunité aux perturbations radioélectriques - Partie 2-1:
Méthodes de mesure des perturbations et de l'immunité - Mesures des perturbations
conduites
Ta slovenski standard je istoveten z: EN 55016-2-1:2009/A2:2013
ICS:
17.220.20 0HUMHQMHHOHNWULþQLKLQ Measurement of electrical
PDJQHWQLKYHOLþLQ and magnetic quantities
33.100.20 Imunost Immunity
SIST EN 55016-2-1:2009/A2:2013 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 55016-2-1:2009/A2:2013
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SIST EN 55016-2-1:2009/A2:2013
EUROPEAN STANDARD
EN 55016-2-1/A2
NORME EUROPÉENNE
May 2013
EUROPÄISCHE NORM
ICS 33.100.10; 33.100.20
English version
Specification for radio disturbance and immunity
measuring apparatus and methods -
Part 2-1: Methods of measurement of disturbances and immunity -
Conducted disturbance measurements
(CISPR 16-2-1:2008/A2:2013)
Spécifications des méthodes et des Anforderungen an Geräte und
appareils de mesure des perturbations Einrichtungen sowie Festlegung
radioélectriques et de l'immunité der Verfahren zur Messung der
aux perturbations radioélectriques - hochfrequenten Störaussendung
Partie 2-1: Méthodes de mesure (Funkstörungen) und Störfestigkeit -
des perturbations et de l'immunité - Teil 2-1: Verfahren zur Messung der
Mesures des perturbations conduites hochfrequenten Störaussendung
(CISPR 16-2-1:2008/A2:2013) (Funkstörungen) und Störfestigkeit -
Messung der leitungsgeführten
Störaussendung
(CISPR 16-2-1:2008/A2:2013)
This amendment A2 modifies the European Standard EN 55016-2-1:2009; it was approved by CENELEC on
2013-04-22. 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 CEN-CENELEC Management Centre 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
CEN-CENELEC Management Centre has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus,
the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany,
Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Management Centre: Avenue Marnix 17, B - 1000 Brussels
© 2013 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 55016-2-1:2009/A2:2013 E
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SIST EN 55016-2-1:2009/A2:2013
EN 55016-2-1:2009/A2:2013 - 2 -
Foreword
The text of document CISPR/A/1023/FDIS, future amendment 2 to edition 2 of CISPR 16-2-1,
prepared by SC A "Radio-interference measurements and statistical methods" of IEC/TC CISPR
“International special committee on radio interference” was submitted to the IEC-CENELEC parallel
vote and approved by CENELEC as EN 55016-2-1:2009/A2:2013.
The following dates are fixed:
(dop) 2014-01-22
• latest date by which the document has
to be implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2016-04-22
standards conflicting with the
document have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such
patent rights.
Endorsement notice
The text of the International Standard CISPR 16-2-1:2008/A2:2013 was approved by CENELEC as a
European Standard without any modification.
In the Bibliography of EN 55016-2-1:2009, the following notes have to be added for the standards
indicated:
IEC 61000-4-6:2008 NOTE Harmonised as EN 61000-4-6:2009 (not modified).
CISPR 16 Series NOTE Harmonised as EN 55016 Series (not modified).
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SIST EN 55016-2-1:2009/A2:2013
- 3 - EN 55016-2-1:2009/A2:2013
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
Replacement in Annex ZA of EN 55016-2-1:2009:
Publication Year Title EN/HD Year
In Annex ZA of EN 55016-2-1:2009, replace the existing reference to CISPR 16-1-2 by the
following new reference:
CISPR 16-1-2 2003 Specification for radio disturbance and EN 55016-1-2 2004
+ corr. January 2009 immunity measuring apparatus and methods + A1 2005
+ A1 2004 - Part 1-2: Radio disturbance and immunity + A2 2006
+ A2 2006 measuring apparatus - Ancillary equipment -
Conducted disturbances
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SIST EN 55016-2-1:2009/A2:2013
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SIST EN 55016-2-1:2009/A2:2013
CISPR 16-2-1
®
Edition 2.0 2013-03
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 2-1: Methods of measurement of disturbances and immunity – Conducted
disturbance measurements
Spécifications des méthodes et des appareils de mesure des perturbations
radioélectriques et de l'immunité aux perturbations radioélectriques –
Partie 2-1: Méthodes de mesure des perturbations et de l'immunité – Mesures
des perturbations conduites
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX V
ICS 33.100.10; 33.100.20 ISBN 978-2-83220-681-2
Warning! Make sure that you obtained this publication from an authorized distributor.
Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
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SIST EN 55016-2-1:2009/A2:2013
– 2 – CISPR 16-2-1 Amend.2 © IEC:2013
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/1023/FDIS CISPR/A/1029/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.
_____________
2 Normative references
Replace the existing reference to CISPR 16-1-2 by the following new reference:
CISPR 16-1-2:2003, Specification for radio disturbance and immunity measuring apparatus
and methods – Part 1-2: Radio disturbance and immunity measuring apparatus – Ancillary
equipment – Conducted disturbances
Amendment 1:2004
Amendment 2:2006
3 Definitions
Add, after definition 3.34 added by Amendment 1, the new terms and definitions 3.35 and
3.36 as follows:
3.35
total common mode impedance
TCM impedance
impedance between the cable attached to the EUT port under test and the reference ground
plane
NOTE The complete cable is seen as one wire of the circuit and the ground plane as the other wire of the circuit.
The TCM wave is the transmission mode of electrical energy, which can lead to radiation of electrical energy if the
cable is exposed in the real application. Vice versa, this is also the dominant mode, which results from exposure of
the cable to external electromagnetic fields.
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SIST EN 55016-2-1:2009/A2:2013
CISPR 16-2-1 Amend.2 © IEC:2013 – 3 –
3.36
asymmetric artificial network
AAN
network used to measure (or inject) asymmetric (common mode) voltages on unshielded
symmetric signal (e.g. telecommunication) lines while rejecting the symmetric (differential
mode) signal
NOTE 1 An AAN is an AN (artifical network) that provides a simulation of the asymmetric load realized by the
telecommunication network.
NOTE 2 The term “Y-network” is a synonym for AAN.
NOTE 3 The AAN can also be used for immunity testing, where the receiver measurement port becomes the
disturbance injection port.
6.4 Operating conditions of the EUT
Replace the existing title of this subclause by the following new title:
6.4 EUT arrangement and measurement conditions
6.4.1 General
Replace the existing title and text of this subclause as follows:
6.4.1 EUT arrangement
6.4.1.1 General
Where not specified in the product standard, the EUT shall be configured as described in the
following paragraphs.
The EUT shall be installed, arranged and operated in a manner consistent with typical
applications. Where the manufacturer has specified or recommended an installation practice,
such practice shall be used in the test arrangement, where possible. This arrangement shall
be typical of the normal installation practice. Interface cables, loads and devices shall be
connected to at least one of each type of interface port of the EUT, and where practical, each
cable shall be terminated in a device typical of actual usage.
Where there are multiple interface ports of the same type, additional interconnecting cables,
loads and devices may need to be added to the EUT depending upon the results of
preliminary tests. The number of additional cables or wires of the same type should be limited
to the condition where the addition of another cable or wire does not significantly affect the
emission level, i.e. varies by less than 2 dB, provided that the EUT remains compliant. The
rationale for the selection of the configuration and loading of ports shall be included in the test
report.
Interconnecting cables should be of the type and length specified in the individual equipment
requirements. If the length can be varied, the length shall be selected to produce maximum
disturbance.
If shielded or special cables are used during the tests to achieve compliance, a note shall be
included in the instruction manual advising of the need to use such cables.
Excess lengths of cables shall be bundled at the approximate centre of the cable with the
bundles 30 cm to 40 cm in length. If it is impractical to do so because of cable bulk or
stiffness, the disposition of the excess cable shall be precisely noted in the test report.
Where there are multiple interface ports all of the same type, connecting a cable to just one of
that type of port is sufficient, provided it can be shown that the additional cables would not
significantly affect the results.
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SIST EN 55016-2-1:2009/A2:2013
– 4 – CISPR 16-2-1 Amend.2 © IEC:2013
Any set of results shall be accompanied by a complete description of the cable and equipment
orientation so that results can be repeated. If specific conditions of use are required to meet
the limits, those conditions shall be specified and documented, for example cable length,
cable type, shielding and grounding. These conditions shall be included in the instructions to
the user.
Equipment that is populated with multiple modules (such as drawers and plug-in cards) shall
be tested with a mix and number representative of that used in a typical installation. The
number of additional boards or plug-in cards of the same type should be limited to the
condition where the addition of another board or plug-in card does not significantly affect the
emission level, i.e. varies by less than 2 dB, provided that the EUT remains compliant. The
rationale used for selecting the number and type of modules should be stated in the test
report.
A system that consists of a number of separate units shall be configured to form a minimum
representative configuration. The number and mix of units included in the test configuration
shall normally be representative of that used in a typical installation. The rationale used for
selecting units should be stated in the test report.
One module of each type shall be operational in each equipment evaluated in an EUT. For an
EUT comprising a system, one of each type of equipment that can be included in the possible
system configuration shall be included in the EUT.
The results of an evaluation of EUTs having one of each type of module can be applied to
configurations having more than one of each of those modules.
NOTE It has been found that disturbances from identical modules are generally not additive in practice.
The EUT position relative to the reference ground plane shall be equivalent to that occurring
in use. Therefore, floor-standing equipment is placed on, but insulated from, a reference
ground plane, and tabletop equipment is placed on a non-conductive table.
Equipment designed for wall-mounted operation shall be tested as tabletop EUT. The
orientation of the equipment shall be consistent with normal installation practice.
Combinations of the equipment types identified above shall also be arranged in a manner
consistent with normal installation practice. Equipment designed for both tabletop and floor
standing operation shall be tested as tabletop equipment unless the usual installation is floor
standing, then that arrangement shall be used.
The ends of signal cables attached to the EUT that are not connected to another unit or
auxiliary equipment (AuxEq) shall be terminated using the correct terminating impedance
defined in the product standard. If no product standard can be applied to the particular
configuration, the termination shall be defined by the EUT manufacturer and noted in the test
report.
Cables or other connections to auxiliary equipment located outside the test site shall drape to
the floor, and then be routed to the place where they leave the test site.
Installation of AuxEq shall be in accordance with normal installation practice. Where this
means that the AuxEq is located on the test site, it shall be arranged using the same
conditions applicable for the EUT (for example, distance from the ground plane and insulation
from the ground plane if floor standing, layout of cabling).
6.4.1.2 Arrangement of tabletop equipment
Equipment intended for tabletop use shall be placed on a non-conductive table. The size of
the table will nominally be 1,5 m by 1,0 m but may ultimately be dependent on the horizontal
dimensions of EUT.
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SIST EN 55016-2-1:2009/A2:2013
CISPR 16-2-1 Amend.2 © IEC:2013 – 5 –
Intra-unit cables shall be draped over the back of the table. If a cable hangs closer than 0,4 m
from the horizontal ground plane (or floor), the excess shall be folded at the cable centre into
a bundle no longer than 0,4 m, such that the part of the bundle closest to the horizontal
reference ground plane is at least 0,4 m above the plane.
Cables shall be positioned as for normal usage.
If the mains port input cable is less than 0,8 m long (including power supplies integrated in the
mains plug), an extension cable shall be used such that the external power supply unit is
placed on the tabletop. The extension cable shall have similar characteristics to the mains
cable (including the number of conductors and the presence of a ground connection). The
extension cable shall be treated as part of the mains cable.
In the above arrangements, the cable between the EUT and the power accessory shall be
arranged on the tabletop in the same manner as other cables connecting components of the
EUT.
6.4.1.3 Arrangement of floor-standing equipment
The EUT shall be placed on the horizontal reference ground plane, orientated for normal use,
but separated from metallic contact with the reference ground plane by up to 15 cm of
insulation.
The cables shall be insulated (by up to 15 cm) from the horizontal reference ground plane. If
the equipment requires a dedicated ground connection, then this shall be provided and
bonded to the horizontal reference ground plane.
Intra-unit cables (between units forming the EUT or between the EUT and any auxiliary
equipment) shall drape to, but remain insulated from, the horizontal reference ground plane.
Any excess cable shall either be folded at the cable centre into a bundle no longer than 0,4 m
or arranged in a serpentine fashion. If an intra-unit cable length is not long enough to drape to
the horizontal reference ground plane but drapes closer than 0,4 m, then the excess shall be
folded at the cable centre into a bundle no longer than 0,4 m. The bundle shall be positioned
such that it is either 0,4 m above the horizontal reference ground plane or at the height of the
cable entry or connection point if this is within 0,4 m of the horizontal reference ground plane.
For equipment with a vertical cable riser, the number of risers shall be typical of installation
practice. Where the riser is made of non-conductive material, a minimum spacing of at least
0,2 m shall be maintained between the closest part of the equipment and the nearest vertical
cable. Where the riser structure is conductive, the minimum spacing of 0,2 m shall be
between the closest parts of the equipment and riser structure.
6.4.1.4 Arrangement for combinations of tabletop and floor-standing equipment
Intra-unit cables between a tabletop unit and a floor-standing unit shall have the excess cable
folded into a bundle no longer than 0,4 m. The bundle shall be positioned such that it is either
0,4 m above the horizontal reference ground plane or at the height of the cable entry or
connection point if this is within 0,4 m of the horizontal reference ground plane.
Add, after the existing Subclause 6.4.6, the new subclauses:
6.4.7 Operation of multifunction equipment
Multifunction equipment that is subjected simultaneously to different clauses of a product
standard and/or different standards shall be tested with each function operated in isolation, if
this can be achieved without modifying the equipment internally. The equipment thus tested
shall be deemed to have complied with the requirements of all clauses/standards when each
function has satisfied the requirements of the relevant clause/standard.
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SIST EN 55016-2-1:2009/A2:2013
– 6 – CISPR 16-2-1 Amend.2 © IEC:2013
For equipment that it is not practical to test with each function operated in isolation, or where
the isolation of a particular function would result in the equipment being unable to fulfil its
primary function, or where the simultaneous operation of several functions would result in
saving measurement time, the equipment shall be deemed to have complied if it meets the
provisions of the relevant clause/standard with the necessary functions operated.
6.4.8 Determination of EUT arrangement(s) that maximizes emissions
Initial testing shall identify the frequency that has the highest disturbance relative to the limit.
This identification shall be performed whilst operating the EUT in typical modes of operation
and with cable positions in a test arrangement that is representative of typical installation
practice.
The frequency of highest disturbance with respect to the limit shall be found by investigating
disturbances at a number of significant frequencies. This provides confidence that the
probable frequency of maximum disturbance has been found and that the associated cable,
EUT arrangement and mode of operation has been identified.
For initial testing, the EUT should be arranged in accordance with the product standards as
appropriate.
6.4.9 Recording of measurement results
Of those disturbances above (L – 20 dB), where L is the limit level in dB(μV) or dB(μA), the
disturbance levels and the frequencies of at least the six disturbances having the smallest
margin to the limit L shall be recorded.
In addition, the test report shall include the value of the measurement instrumentation
uncertainty corresponding to the used test setup, calculated as per the requirements of
CISPR 16-4-2.
7.3.1 General
Replace the existing Note by the following new Note:
NOTE Some standards use the terms impedance stabilization network (ISN) for ANs for emission measurements
on telecommunication ports (i.e. AANs or Y-networks).
7.3.3 Voltage probes
Replace the existing first paragraph of this subclause by the following new paragraph:
For specifications of voltage probes, see CISPR 16-1-2.
7.4.1 Arrangement of the EUT and its connection to the AN
Replace, in the fifth dashed item of the list of this subclause, the abbreviation “ISNs” by the
new abbreviation “AANs.”
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SIST EN 55016-2-1:2009/A2:2013
CISPR 16-2-1 Amend.2 © IEC:2013 – 7 –
Figure 6 – Test configuration: table-top equipment for conducted disturbance
measurements on power mains
Replace the existing figure and notes, modified by Amendment 1, by the following:
Non-conductive table
0,1 m
Rear of EUT to be flush
with rear of table top 6
5
5
0,8 m to
ground
3
plane
4
AE
0,8 m
1
2
AMN
Current probe
Termination
0,4 m
AAN
AMN
0,1 m
Bonded to horizontal
0,4 m to vertical reference
Bonded to horizontal
ground plane
ground plane 7
ground plane
Vertical reference
IEC 500/13
ground plane
1 Interconnecting cables that hang closer than 40 cm to the ground plane shall be folded back and forth forming a
bundle 40 cm long or less, hanging approximately in the middle between the ground plane and the table. The
minimum bend radius of the cable shall not be exceeded. If the bend radius causes the bundle length to exceed
40 cm, the bend radius shall determine the bundle length.
2 I/O cables that are connected to a peripheral shall be bundled in the centre. The end of the cable may be
terminated if required using correct terminating impedance. The total length shall not exceed 1 m – if possible.
3 EUT is connected to one AMN. Measurement terminals of AMNs and AANs must be terminated with 50 Ω if not
connected to the measuring receiver. AMNs are placed directly on the horizontal ground plane 0,8 m from the
EUT and 40 cm from vertical ground plane if the vertical ground plane is the reference ground plane (see also
Figure 7 a)). Alternatively (as shown in Figure 7 b)), AMNs are placed on the vertical ground plane 0,8 m from
the EUT, if the horizontal ground plane is the reference ground plane, which is 40 cm below the EUT. To reach
the 0,8 m distance, the AMNs may have to be moved to the side. All associated equipment is connected to a
second AMN if this second AMN is capable of supplying the necessary power. In cases where a single AMN is
not capable of supplying the necessary power, several AMNs may be used to supply the associated equipment.
4 Cables of hand-operated devices, such as keyboards, mouses, etc., shall be placed as close as possible to the
host.
5 Non-EUT components being tested.
6 Rear of EUT, including peripherals, shall all be aligned and flush with rear of table-top.
7 Rear of table-top shall be at a distance of 40 cm from a vertical conducting plane that is bonded to the floor
ground plane.
Tolerances of cable lengths and distances are as practical as possible.
Figure 6 – Test configuration: table-top equipment for conducted disturbance
measurements on power mains
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SIST EN 55016-2-1:2009/A2:2013
– 8 – CISPR 16-2-1 Amend.2 © IEC:2013
Figure 8 – Optional example test configuration for an EUT with only a power cord
attached
Replace the existing figure and notes by the following:
1
6
4
P
B
2
M
3
0,4 m
0,4 m
5
0,3 m-0,4 m
> 0,8 m
0,8 m
1
IEC 501/13
1 Metallic wall 2 m × 2 m
2 EUT
3 Excess power cord (e.g., 0,02 m × 0,3 m forming a meander)
4 AMN
5 Coaxial cable
6 Measuring receiver
B Reference ground connection
M Measuring receiver input
P Power to EUT
Tolerances of cable lengths and distances are as practical as possible.
Figure 8 – Optional example test configuration for an EUT with only a power cord
attached
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SIST EN 55016-2-1:2009/A2:2013
CISPR 16-2-1 Amend.2 © IEC:2013 – 9 –
Figure 9 – Test configuration: floor-standing equipment (see 7.4.1 and 7.5.2.2)
Replace the existing figure and notes by the following:
Use typical spacing
EUT
2
Insulation
0,4 m
Termination
1
Connector height
Current probe
0,8 m
3
0,1 m
AE
AMN
AMN
AAN
Bonded to horizontal
reference ground plane
IEC 502/13
1 Excess cables shall be bundled in the centre or shortened to appropriate length.
2 The EUT and cables shall be insulated (up to 15 cm) from the ground plane.
3 The EUT is connected to one AMN. The AMN can be placed on top of or immediately
beneath the ground plane.
All other equipment is powered from the second AMN.
Tolerances of cable lengths and distances are as practical as possible.
Figure 9 – Test configuration: floor-standing equipment (see 7.4.1 and 7.5.2.2)
Add, after the existing Annex F added by Amendment 1, the following new Annexes G, H and
I as follows:
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SIST EN 55016-2-1:2009/A2:2013
– 10 – CISPR 16-2-1 Amend.2 © IEC:2013
Annex G
(informative)
Guidance for measurements on telecommunications ports
G.1 Limits
The disturbance voltage (or current) limit is defined for a TCM load impedance of 150 Ω (as
seen by the EUT at the AE port during the measurement). This standardisation is necessary
in order to obtain reproducible measurement results, independent of the indeterminate TCM
impedance at the AE and the EUT.
NOTE 1 The common mode disturbances created from the wanted signal can be controlled at the design stage of
the interface technology by giving proper consideration to the factors explained in CISPR/TR 16-3.
In general, the TCM impedance seen by the EUT at the AE port is not defined unless an
AAN/CDN is used. If the AE is located outside the shielded room, the TCM impedance seen
by the EUT at the AE port can be determined by the TCM impedance of the feed-through filter
between the measurement set-up and the outside world. A Π-type filter has a low TCM
impedance, whilst a T-type filter has a high TCM impedance.
NOTE 2 CDNs are described in IEC 61000-4-6.
AAN/CDNs do not exist for all types of cables used by EUTs. Therefore it is also necessary to
define alternative test methods that do not use AAN/CDNs (i.e. “non-invasive” test methods).
Only the cable attached to the EUT port under test is shown in the figures of Annex H.
Normally, there are several other cables (or ports) present at the EUT. At least the connection
to the mains terminal is represented in most cases. The TCM impedance of these other
connections (including a possible ground connection), and the presence or absence of these
connections during the test, can influence the measurement result significantly, in particular
for small EUTs. Therefore, the TCM impedance of the non-measured connections should be
specified for the test of small EUTs. In addition to the port under test, it is sufficient to have at
least two additional ports connected to a TCM impedance of 150 Ω (normally by using an AAN
or CDN, with the RF measurement port terminated with 50 Ω load) to reduce this influence
effect to a negligible amount.
Coupling devices for unshielded balanced pairs should also simulate the typical LCL
(longitudinal conversion loss) of the lowest cabling category (worst LCL) specified for the
telecom port under test. The intent of this requirement is to account for the transformation of
the symmetrical signal into
...
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