EN 60512-25-2-2002 en Connectors for Electronic Equipment - Tests and Measurements Part 25-2 Test 25b Attenuation (Insertion Loss)《电子设备用连接器 试验和测量 第25-2部分 试验25b 衰减(介入损耗)IEC 60512-25.pdf
《EN 60512-25-2-2002 en Connectors for Electronic Equipment - Tests and Measurements Part 25-2 Test 25b Attenuation (Insertion Loss)《电子设备用连接器 试验和测量 第25-2部分 试验25b 衰减(介入损耗)IEC 60512-25.pdf》由会员分享,可在线阅读,更多相关《EN 60512-25-2-2002 en Connectors for Electronic Equipment - Tests and Measurements Part 25-2 Test 25b Attenuation (Insertion Loss)《电子设备用连接器 试验和测量 第25-2部分 试验25b 衰减(介入损耗)IEC 60512-25.pdf(18页珍藏版)》请在麦多课文档分享上搜索。
1、BRITISH STANDARD Connectors for electroni c equipment Tests and measurements Part 25-2: Test 25b: Attenuation (insertion loss) The European Standard EN 60512-25-2:2002 has the status ofa British Standard ICs 31.220.10 BS EN 605 12-25-21 2002 present to the responsible European committee any enquirie
2、s on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. - A list of organizations represented on this subcommittee can be obtained on request to its secretary. From 1 January 1997, al
3、l IEC publications have the number 60000 added to the old number. For instance, IEC 27-1 has been renumbered as IEC 60027-1. For a period of time during the change over fi-om one numbering system to the other, publications may contain identifiers from both systems. Cros s-r e fer en ces The British
4、Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search”faci1ity of the BSI Electronic Catalogue or of British Standards Online.
5、This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside
6、front cover, the EN title page, pages 2 to 14, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. O BSI 9 July 2002 ISBN O 580 39945 I EUROPEAN STANDARD EN 6051 2-25-2 NORME EUROPENNE EUROPISCHE NORM June 2002 ICs 31.
7、220.10 English version Connectors for electronic equipment - Tests and measurements Part 25-2: Test 25b: Attenuation (insertion loss) (IEC 6051 2-25-212002) Connecteurs pour quipements lectroniques - Essais et mesures Partie 25-2: Essai 25b: Attnuation (perte dinsertion) (CE1 6051 2-25-212002) Steck
8、verbinder fr elektronische Einrichtungen - Mess- und Prfverfahren Teil 25-2: Prfung 25b: Dmpfung (Einfgedmpfung) (IEC 60512-25-212002) This European Standard was approved by CENELEC on 2002-05-01. CENELEC members are bound to comply with the CENKENELEC Internal Regulations which stipulate the condit
9、ions 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 thr
10、ee 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 oficial versions. CENELEC members are the national electrotechnica
11、l 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 Comit Europen de Norm
12、alisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels O 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 Page 2 EN 60512-25-220
13、02 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
14、-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 - latest date by which the national standards conflicting with the EN have to be withdrawn Annexes designated “no
15、rmative“ 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. (dop) 2003-02-01 (dow) 2005-05-01 En dorse ment not i ce The text of the International Standard IEC 60512-25-2:2002 was a
16、pproved by CENELEC as a European Standard without any modification. O BSI 9 July 2002 Page 3 EN 60512-25-22002 CONTENTS General 4 1 . 1 Scope 4 1.2 Definitions . 7 Test resources 4 2.1 Equipment 4 2.2 Fixture . 5 Test specimen 6 3.1 Description 6 Test procedure . 6 4.1 Fixture attenuation 6 4.2 Spec
17、imen attenuation measurement 7 4.3 Impedance analyzer (openkhort method) 8 4.4 Additional measurements 8 4.5 Time domain method . 8 Details to be specified 9 Test documentation 9 Annex A (normative) Annex B (informative) Diagrams and schematics of fixtures and equipment 10 Practical guidance 14 Figu
18、re A.l . Technical diagrams . 10 Figure A.2 . Single-ended terminations 11 Figure A.3 . Differential (balanced) terminations 12 Figure A.4 . Example of specimen in fixture for attenuation 13 O BSI 9 July 2002 Page 4 EN 60512-25-22002 CONNECTORS FOR ELECTRONIC EQUIPMENT - TESTS AND MEASUREMENTS - Par
19、t 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
20、 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 Definiti
21、ons For the purpose of this part of IEC 60512, the following definitions apply. 1.2.1 att en u at on 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
22、 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 fixtu
23、re 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, ad
24、ditional 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. O BSI 9 July 2002 Page 5 EN 60512-25-22002 2.1.2 Time dom
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