EN 60512-25-9:2008

SLOVENSKI STANDARD
01-februar-2009
Konektorji za elektronsko opremo - Preskušanje in meritve - 25-9. del: Preskusi
celovitosti signala (signalne integritete) - Preskus 25i: Tuji presluh (IEC 60512-25-
9:2008)
Connectors for electronic equipment - Tests and measurements - Part 25-9: Signal
integrity tests - Test 25i: Alien crosstalk (IEC 60512-25-9:2008)
Steckverbinder für elektronische Einrichtungen - Mess- und Prüfverfahren - Teil 25-9:
Signalintegritätsprüfungen - Prüfung 25i: Externes Nebensprechen (Alien Crosstalk) (IEC
60512-25-9:2008)
Connecteurs pour équipements électroniques - Essais et mesures - Partie 25-9: Essais
d'intégrité des signaux - Essai 25i : Diaphonie exogène (CEI 60512-25-9:2008)
Ta slovenski standard je istoveten z: EN 60512-25-9:2008
ICS:
31.220.10 9WLþLLQYWLþQLFHNRQHNWRUML Plug-and-socket devices.
Connectors
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 60512-25-9
NORME EUROPÉENNE
November 2008
EUROPÄISCHE NORM
ICS 31.220.10
English version
Connectors for electronic equipment -
Tests and measurements -
Part 25-9: Signal integrity tests -
Test 25i: Alien crosstalk
(IEC 60512-25-9:2008)
Connecteurs pour équipements Steckverbinder für elektronische
électroniques - Einrichtungen -
Essais et mesures - Mess- und Prüfverfahren -
Partie 25-9: Essais d'intégrité des signaux - Teil 25-9: Signalintegritätsprüfungen -
Essai 25i: Diaphonie exogène Prüfung 25i: Externes Nebensprechen
(CEI 60512-25-9:2008) (Alien Crosstalk)
(IEC 60512-25-9:2008)
This European Standard was approved by CENELEC on 2008-11-01. CENELEC members are bound to comply
with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard
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 European Standard 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, Bulgaria, Cyprus, the
Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the 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

© 2008 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60512-25-9:2008 E
Foreword
The text of document 48B/1915/FDIS, future edition 1 of IEC 60512-25-9, prepared by SC 48B,
Connectors, of IEC TC 48, Electromechanical components and mechanical structures for electronic
equipment, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as
EN 60512-25-9 on 2008-11-01.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2009-08-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2011-11-01
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 60512-25-9:2008 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards indicated:
IEC 60068-1 NOTE  Harmonized as EN 60068-1:1994 (not modified).
ISO/IEC 11801 NOTE  In Europe the subject is covered by the series EN 50173, Information technology -
Generic cabling systems.
__________
- 3 - EN 60512-25-9:2008
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.

NOTE  When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.
Publication Year Title EN/HD Year

1)
IEC 60050-581 - International Electrotechnical Vocabulary - -
(IEV) -
Chapter 581: Electromechanical components
for electronic equipment
1) 2)
IEC 60512-26-100 - Connectors for electronic equipment - EN 60512-26-100 2008
Tests and measurements -
Part 26-100: Measurement setup, test and
reference arrangements and measurements
for connectors according to IEC 60603-7 -
Tests 26a to 26g
IEC 60603-7 Series Connectors for electronic equipment - EN 60603-7 Series
Part 7: Detail specification for 8-way,
unshielded, free and fixed connectors

IEC 60603-7-4 2005 Connectors for electronic equipment - EN 60603-7-4 2005
Part 7-4: Detail specification for 8-way,
unshielded, free and fixed connectors, for data
transmissions with frequencies up to 250 MHz

IEC 61076-3-104 2006 Connectors for electronic equipment - EN 61076-3-104 2006
Product requirements -
Part 3-104: Detail specification for 8-way,
shielded free and fixed connectors for data
transmissions with frequencies up to
1 000 MHz
IEC 61156 Series Multicore and symmetrical pair/quad cables - -
for digital communications
1)
Undated reference.
2)
Valid edition at date of issue.

IEC 60512-25-9
Edition 1.0 2008-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Connectors for electronic equipment – Tests and measurements –
Part 25-9: Signal integrity tests – Test 25i: Alien crosstalk

Connecteurs pour équipements électroniques – Essais et mesures –
Partie 25-9: Essais d'intégrité des signaux – Essai 25i: Diaphonie exogène

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
R
CODE PRIX
ICS 31.220.10 ISBN 2-8318-9971-0
– 2 – 60512-25-9 © IEC:2008
CONTENTS
FOREWORD.3
1 Scope and object .5
2 Normative references.5
3 Terms and definitions .5
4 Overview .6
4.1 Procedure.6
4.2 Resources .7
5 Overall test arrangement.7
5.1 General .7
5.2 Terminations .8
5.3 Pairs of connectors to test .8
6 Procedure to test alien crosstalk from one connector to another connector .10
6.1 Calibration.10
6.2 Measurement (noise) floor .10
6.3 Alien crosstalk measurement .10
7 Procedure for determining significance.11
8 Details to be specified in the detail specification.12
9 Power sum calculation, report and documentation .12
Annex A (informative) Flow chart for obtaining alien crosstalk performance data.13
Annex B (informative) Illustrations of alien crosstalk testing using coaxial switching.14
Bibliography .18

Figure 1 – Schematic for testing without a switch.8
Figure 2 – Schematic for terminations .8
Figure 3 – Connector array.9
Figure 4 – Test directions.11
Figure A.1 – Flowchart for the test procedure .13
Figure B.1 – Schematic for testing with a switch .14
Figure B.2 – Example network analyzer, switch, and fixture with 8 baluns in 2 clusters.15
Figure B.3 – Example of fixture, in which balun clusters can slide left and right.16
Figure B.4 – Post can rotate three different directions.17

60512-25-9 © IEC:2008 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
CONNECTORS FOR ELECTRONIC EQUIPMENT –
TESTS AND MEASUREMENTS –
Part 25-9: Signal integrity tests –
Test 25i: Alien crosstalk
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with an IEC Publication.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60512-25-9 has been prepared by subcommittee 48B: Connectors,
of IEC technical committee 48: Electromechanical components and mechanical structures for
electronic equipment.
The text of this standard is based on the following documents:
FDIS Report on voting
48B/1915/FDIS 48B/1930/RVD
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts of IEC 60512 series, under the general title Connectors for electronic
equipment – Tests and measurements, can be found on the IEC website.

– 4 – 60512-25-9 © IEC:2008
The committee has decided that the contents of this 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.
60512-25-9 © IEC:2008 – 5 –
CONNECTORS FOR ELECTRONIC EQUIPMENT –
TESTS AND MEASUREMENTS –
Part 25-9: Signal integrity tests –
Test 25i: Alien crosstalk
1 Scope and object
This part of IEC 60512 defines a test method which is intended to assess the near-end alien
crosstalk (ANEXT) and the far-end alien crosstalk (AFEXT) between connectors in close
proximity, when mounted in their mounting systems. Both discrete modular connectors and
multi-port panel connectors may be tested using this method. This method provides a means to
test the alien (exogenous) crosstalk between any two ports, as well as a means to assess the
overall alien crosstalk from all other ports. This test procedure is generally applicable to any
electrical connector, and is particularly suitable to connectors described in IEC 60603-7 series,
IEC 61076-3-104, and other types of connectors for data transmission.
2 Normative references
The following referenced documents are indispensable for the application of this document. For
dated references, only the edition cited applies. For undated references, the latest edition of
the referenced document (including any amendments) applies.
IEC 60050-581, International Electrotechnical Vocabulary (IEV) – Chapter 581:
Electromechanical components for electronic equipment
IEC 60512-26-100, Connectors for electronic equipment – Tests and measurement –
Part 26-100: Measurement setup, test and reference arrangements and measurements for
connectors according to IEC 60603-7 (tests 26a to 26g)
IEC 60603-7-4:2005, Connectors for electronic equipment – Part 7-4: Detail specification for 8-
way, unshielded, free and fixed connectors, for data transmissions with frequencies up to
250 MHz
IEC 60603-7 (all parts), Connectors for electronic equipment – Part 7: Detail specifications for
8-way, (un)shielded, free and fixed connectors, for data transmissions
IEC 61076-3-104:2006, Connectors for electronic equipment – Part 3-104: Detail specification
for 8-way, shielded, free and fixed connectors, for data transmissions with frequencies up to
1000 MHz
IEC 61156, Multicore and symmetrical pair/quad cable for digital communications
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 60050-581 apply as
well as the following.
3.1
alien (exogenous) crosstalk (AXT)
signal coupling from disturbing conductor pairs into a disturbed pair of another connector

– 6 – 60512-25-9 © IEC:2008
3.2
alien (exogenous) near-end crosstalk (ANEXT) loss
signal coupling from a near-end disturbing conductor pair into a disturbed pair of another
connector, measured at the near-end
3.3
alien (exogenous) far-end crosstalk (AFEXT) loss
signal coupling from a near-end disturbing conductor pair into a disturbed pair of another
connector, measured at the far-end
3.4
power sum alien (exogenous) near-end crosstalk (PSANEXT) loss
a computation of signal coupling from multiple near-end disturbing conductor pairs, in one or
more connectors, into a disturbed pair of another connector, measured at the near-end
3.5
power sum alien (exogenous) far-end crosstalk (PSAFEXT) loss
a computation of signal coupling from multiple near-end disturbing conductor pairs, in one or
more connectors, into a disturbed pair of another connector, measured at the far-end
4 Overview
4.1 Procedure
Alien crosstalk is a property that exists between connectors. It is affected by the properties of
the connectors themselves, as well as the arrangement of the connectors in their mounting
system, and the mo
...