Connectors for electronic equipment - Tests and measurements -- Part 25-5: Test 25e - Return loss

D114/118: CLC/TC 48B disbanded

Steckverbinder für elektronische Einrichtungen - Mess- und Prüfverfahren -- Teil 25-5: Prüfung 25e - Rückflussdämpfung

Connecteurs pour équipements électroniques - Essais et mesures -- Partie 25-5: Essai 25e - Affaiblissement de réflexion

S'applique aux connecteurs électriques, aux embases, aux cordons ou aux systèmes d'interconnexion. Décrit des méthodes en temporelle et en fréquence pour mesurer l'affaiblissement de réflexion en fonction de la fréquence.

Konektorji za elektronsko opremo – Preskusi in meritve – 25-5. del: Preskus 25e – Povratna izguba (IEC 60512-25-5:2004)

General Information

Status
Published
Publication Date
30-Nov-2005
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
01-Dec-2005
Due Date
01-Dec-2005
Completion Date
01-Dec-2005

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SLOVENSKI SIST EN 60512-25-5:2005
STANDARD
december 2005
Konektorji za elektronsko opremo – Preskusi in meritve – 25-5. del: Preskus
25e – Povratna izguba (IEC 60512-25-5:2004)
Connectors for electronic equipment – Tests and measurements – Part 25-5: Test
25e – Return loss (IEC 60512-25-5:2004)
ICS 31.220.10 Referenčna številka
SIST EN 60512-25-5:2005(en)

© Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

---------------------- Page: 1 ----------------------
EUROPEAN STANDARD EN 60512-25-5
NORME EUROPÉENNE
EUROPÄISCHE NORM September 2004
ICS 31.220.10
English version
Connectors for electronic equipment –
Tests and measurements
Part 25-5: Test 25e – Return loss
(IEC 60512-25-5:2004)
Connecteurs pour équipements Steckverbinder für elektronische
électroniques – Einrichtungen –
Essais et mesures Mess- und Prüfverfahren
Partie 25-5: Essai 25e – Teil 25-5: Prüfung 25e –
Affaiblissement de réflexion Rückflussdämpfung
(CEI 60512-25-5:2004) (IEC 60512-25-5:2004)

This European Standard was approved by CENELEC on 2004-09-01. 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, 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

© 2004 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 60512-25-5:2004 E
---------------------- Page: 2 ----------------------
EN 60512-25-5:2004 - 2 -
Foreword

The text of document 48B/1447/FDIS, future edition 1 of IEC 60512-25-5, 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 60512-25-5 on 2004-09-01.
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) 2005-06-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2007-09-01
__________
Endorsement notice

The text of the International Standard IEC 60512-25-5:2004 was approved by CENELEC as a

European Standard without any modification.
__________
---------------------- Page: 3 ----------------------
NORME CEI
INTERNATIONALE IEC
60512-25-5
INTERNATIONAL
Première édition
STANDARD
First edition
2004-07
Connecteurs pour équipements électroniques –
Essais et mesures –
Partie 25-5:
Essai 25e –
Affaiblissement de réflexion
Connectors for electronic equipment –
Tests and measurements –
Part 25-5:
Test 25e –
Return loss
© IEC 2004 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: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch Web: www.iec.ch

CODE PRIX
PRICE CODE N
Commission Electrotechnique Internationale
International Electrotechnical Commission
ɆɟɠɞɭɧɚɪɨɞɧɚɹɗɥɟɤɬɪɨɬɟɯɧɢɱɟɫɤɚɹɄɨɦɢɫɫɢɹ
Pour prix, voir catalogue en vigueur
For price, see current catalogue
---------------------- Page: 4 ----------------------
60512-25-5 © IEC:2004 – 3 –
CONTENTS

FOREWORD...........................................................................................................................5

1 Scope...............................................................................................................................9

2 Terms and definitions .......................................................................................................9

3 Test resources..................................................................................................................9

3.1 Equipment ...............................................................................................................9

3.2 Fixture.....................................................................................................................9

4 Test specimen ................................................................................................................11

4.1 Description ............................................................................................................11

5 Test procedure ...............................................................................................................13

5.1 General .................................................................................................................13

5.2 Fixture return loss..................................................................................................13

5.3 Specimen return loss measurement .......................................................................15

5.4 Time domain method .............................................................................................15

6 Details to be specified.....................................................................................................15

7 Test documentation ........................................................................................................17

Annex A (normative) Diagrams and schematics of fixtures and equipment ............................19

Annex B (informative) Practical guidance..............................................................................27

Figure A.1 – Technique 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 return loss....................................................25

---------------------- Page: 5 ----------------------
60512-25-5 © IEC:2004 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
___________
CONNECTORS FOR ELECTRONIC EQUIPMENT –
TESTS AND MEASUREMENTS –
Part 25-5: Test 25e – Return loss
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 60512-25-5 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/1447/FDIS 48B/1460/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 2.

---------------------- Page: 6 ----------------------
60512-25-5 © IEC:2004 – 7 –

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.
---------------------- Page: 7 ----------------------
60512-25-5 © IEC:2004 – 9 –
CONNECTORS FOR ELECTRONIC EQUIPMENT –
TESTS AND MEASUREMENTS –
Part 25-5: Test 25e – Return loss
1 Scope
This part of IEC 60512 is
...

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