SIST EN 60512-25-2:2003

Connectors for electronic equipment - Tests and measurements -- Part 25-2: Test 25b: Attenuation (insertion loss)

Describes a frequency and a time domain method to measure attenuation/insertion loss as a function of frequency. Is applicable to electrical connectors, sockets, cable assemblies or interconnection systems.

Steckverbinder für elektronische Einrichtungen - Mess- und Prüfverfahren -- Teil 25-2: Prüfung 25b - Dämpfung (Einfügedämpfung)

Connecteurs pour équipements électroniques - Essais et mesures -- Partie 25-2: Essai 25b: Atténuation (perte d'insertion)

Décrit des méthodes en temporelle et en fréquence pour mesurer l'atténuation/perte d'insertion en fonction de la fréquence. S'applique aux systèmes d'interconnexion, tels que les connecteurs électriques, les embases et les cordons.

Connectors for electronic equipment - Tests and measurements - Part 25-2: Test 25b: Attenuation (insertion loss) (IEC 60512-25-2:2002)

General Information

• Status: Published
• Publication Date: 30-Sep-2003
• ICS: 31.220.10 - Plug-and-socket devices. Connectors
• Technical Committee: SS EIT - Technical Board for the electrotechnical, information technology and telecommunications fields
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Oct-2003
• Due Date: 01-Oct-2003
• Completion Date: 01-Oct-2003
• Ref Project: EN 60512-25-2:2002 - Connectors for electronic equipment - Tests and measurements - Part 25-2: Test 25b: Attenuation (insertion loss)

Standards Content (Sample)

SLOVENSKI SIST EN 60512-25-2:2003

STANDARD
oktober 2003
Connectors for electronic equipment - Tests and measurements - Part 25-2: Test
25b: Attenuation (insertion loss) (IEC 60512-25-2:2002)
ICS 31.220.10 Referenčna številka
SIST EN 60512-25-2:2003(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 60512-25-2
NORME EUROPÉENNE
EUROPÄISCHE NORM June 2002
ICS 31.220.10
English version
Connectors for electronic equipment -
Tests and measurements
Part 25-2: Test 25b: Attenuation (insertion loss)
(IEC 60512-25-2:2002)
Connecteurs pour équipements Steckverbinder für elektronische
électroniques - Einrichtungen -
Essais et mesures Mess- und Prüfverfahren
Partie 25-2: Essai 25b: Atténuation Teil 25-2: Prüfung 25b: Dämpfung
(perte d'insertion) (Einfügedämpfung)
(CEI 60512-25-2:2002) (IEC 60512-25-2:2002)
This European Standard was approved by CENELEC on 2002-05-01. 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, Czech Republic,
Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands,
Norway, Portugal, 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
© 2002 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60512-25-2:2002 E

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EN 60512-25-2:2002 - 2 -
Foreword
The text of document 48B/1154/FDIS, future edition 1 of IEC 60512-25-2, 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 60512-25-2 on 2002-05-01.
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) 2003-02-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2005-05-01
Annexes designated "normative" are part of the body of the standard.
Annexes designated "informative" are given for information only.
In this standard, annex A is normative and annex B is informative.
__________
Endorsement notice
The text of the International Standard IEC 60512-25-2:2002 was approved by CENELEC as a
European Standard without any modification.
__________

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NORME CEI
INTERNATIONALE IEC
60512-25-2
INTERNATIONAL
Première édition
STANDARD
First edition
2002-03
Connecteurs pour équipements électroniques –
Essais et mesures –
Partie 25-2:
Essai 25b – Atténuation (perte d'insertion)
Connectors for electronic equipment –
Tests and measurements –
Part 25-2:
Test 25b – Attenuation (insertion loss)
 IEC 2002 Droits de reproduction réservés  Copyright - all rights reserved
Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in any
utilisée sous quelque forme que ce soit et par aucun procédé, form or by any means, electronic or mechanical, including
électronique ou mécanique, y compris la photocopie et les photocopying and microfilm, without permission in writing from
microfilms, sans l'accord écrit de l'éditeur. the publisher.
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: [phone] Telefax: [phone] E-mail: [e-mail]  Web: www.iec.ch
CODE PRIX
N
PRICE CODE
Commission Electrotechnique Internationale
International Electrotechnical Commission
Международная Электротехническая Комиссия
Pour prix, voir catalogue en vigueur
For price, see current catalogue

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60512-25-2  IEC:2002 – 3 –
CONTENTS
FOREWORD.5
1 General .7
1.1 Scope.7
1.2 Definitions .7
2 Test resources .7
2.1 Equipment.7
2.2 Fixture.9
3 Test specimen .11
3.1 Description.11
4 Test procedure .11
4.1 Fixture attenuation .11
4.2 Specimen attenuation measurement.13
4.3 Impedance analyzer (open/short method).15
4.4 Additional measurements .15
4.5 Time domain method .15
5 Details to be specified .17
6 Test documentation .17
Annex A (normative) Diagrams and schematics of fixtures and equipment .19
Annex B (informative) Practical guidance.27
Figure A.1 – Technical diagrams.19
Figure A.2 – Single-ended terminations .21
Figure A.3 – Differential (balanced) terminations .23
Figure A.4 – Example of specimen in fixture for attenuation.25

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60512-25-2  IEC:2002 – 5 –
CONNECTORS FOR ELECTRONIC EQUIPMENT –
TESTS AND MEASUREMENTS –
Part 25-2: Test 25b – Attenuation (insertion loss)
FOREWORD
1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of the 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, the IEC publishes International Standards. 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. The 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 the 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 National Committees.
3) The documents produced have the form of recommendations for international use and are published in the form
of standards, technical specifications, technical reports or guides and they are accepted by the National
Committees in that sense.
4) In order to promote international unification, IEC National Committees undertake to apply IEC International
Standards transparently to the maximum extent possible in their national and regional standards. Any
divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
indicated in the latter.
5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with one of its standards.
6) Attention is drawn to the possibility that some of the elements of this International Standard may be the subject
of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60512-25-2 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/1154/FDIS 48B/1208/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 3.
Annex A forms an integral part of this standard.
Annex B is for information only.
The committee has decided that the contents of this publication will remain unchanged until
2006. At this date, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.

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60512-25-2  IEC:2002 – 7 –
CONNECTORS FOR ELECTRONIC EQUIPMENT –
TESTS AND MEASUREMENTS –
Part 25-2: Test 25b – Attenuation (insertion loss)
1 General
1.1 Scope and object
This part of IEC 60512 is applicable to electrical connectors, sockets, cable assemblies or
interconnection systems.
This standard describes a frequency and a time domain method to measure attenuation/
insertion loss as a function of frequency.
NOTE “Attenuation” is referenced throughout the document. Test professionals must use the appropriate term
(attenuation or insertion loss) when summarizing and reporting the test measurements according to the type of
specimen and transmission line being measured.
1.2 Definitions
For the purpose of this part of IEC 60512, the following definitions apply.
1.2.1
attenuation
the reduction of power during the transmission from the input to the output of the specimen,
usually measured in decibels (dB)
1.2.2
insertion loss
the loss of power resulting from the insertion of a connector or similar device into a
transmission line, usually measured in dB
1.2.3
specimen environment impedance
the impedance presented to the signal conductors by the fixture. This impedance is a result of
transmission lines, termination resistors, attached receivers or signal sources, and fixture
parasitics
2 Test resources
2.1 Equipment
2.1.1 Frequency domain
A network analyzer is preferred. When a greater dynamic range is desired, a signal generator
and spectrum analyzer or vector network analyser (for measurement with full 2-port
calibration) may alternatively be used. If necessary, additional equipment increasing the
measurement sensitivity (e.g. broadband output amplifiers or low-noise pre-amplifiers) may be
used. For differential measurements, a multiport network analyzer with appropriate software
or baluns may be used.

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60512-25-2  IEC:2002 – 9 –
2.1.2 Time domain
A time domain reflectometer (TDR), triggered impulse generator and appropriate fast Fourier
transform (FFT) software are preferred.
2.2 Fixture
Unless otherwise specified in the reference document, the specimen environment impedance
shall match the impedance of the test equipment. Typically, this will be 50 Ω for single-ended
measurements and 100 Ω for differential measurements.
2.2.1 Specimen conductor assignments
For each measurement, the line to be measured shall be fixed as indicated in the referencing
document. The far en
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