IEC 61156-5 AMD 1-2012 Symmetrical pair quad cables with transmission characteristics up to 1000 MHz-horizontal floor wiring - Sectional specification《传输特性低于1000 MHz的对称对绞或星绞电缆的水平层布线.分规范》.pdf

《IEC 61156-5 AMD 1-2012 Symmetrical pair quad cables with transmission characteristics up to 1000 MHz-horizontal floor wiring - Sectional specification《传输特性低于1000 MHz的对称对绞或星绞电缆的水平层布线.分规范》.pdf》由会员分享，可在线阅读，更多相关《IEC 61156-5 AMD 1-2012 Symmetrical pair quad cables with transmission characteristics up to 1000 MHz-horizontal floor wiring - Sectional specification《传输特性低于1000 MHz的对称对绞或星绞电缆的水平层布线.分规范》.pdf（8页珍藏版）》请在麦多课文档分享上搜索。

1、 IEC 61156-5 Edition 2.0 2012-12 INTERNATIONAL STANDARD Multicore and symmetrical pair/quad cables for digital communications Part 5: Symmetrical pair/quad cables with transmission characteristics up to 1 000 MHz Horizontal floor wiring Sectional specification IEC 61156-5:2009/A1:2012(E) AMENDMENT 1

2、 THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2012 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission

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4、er information. IEC Central Office Tel.: +41 22 919 02 11 3, rue de Varemb Fax: +41 22 919 03 00 CH-1211 Geneva 20 infoiec.ch Switzerland www.iec.ch About the IEC The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes International Standard

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7、o date on all new IEC publications. Just Published details all new publications released. Available on-line and also once a month by email. Electropedia - www.electropedia.org The worlds leading online dictionary of electronic and electrical terms containing more than 30 000 terms and definitions in

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9、r Service Centre: csciec.ch. IEC 61156-5 Edition 2.0 2012-12 INTERNATIONAL STANDARD Multicore and symmetrical pair/quad cables for digital communications Part 5: Symmetrical pair/quad cables with transmission characteristics up to 1 000 MHz Horizontal floor wiring Sectional specification INTERNATION

10、AL ELECTROTECHNICAL COMMISSION C ICS 33.120.20 PRICE CODE ISBN 978-2-83220-549-5 AMENDMENT 1 Registered trademark of the International Electrotechnical Commission Warning! Make sure that you obtained this publication from an authorized distributor. 2 61156-5 Amend. 1 IEC:2012(E) FOREWORD This amendm

11、ent has been prepared by subcommittee 46C: Wires and symmetric cables, of IEC technical committee 46: Cables, wires, waveguides, R.F. connectors, R.F. and microwave passive components and accessories. The text of this amendment is based on the following documents: CDV Report on voting 46C/954/CDV 46

12、C/967/RVC 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 amendment and the base publication will remain unchanged until the stability date indicated on the IEC we

13、b 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. A bilingual version of this publication may be issued at a later date. _ 6.2.2.2 Resistance unbalance between

14、 pairs Delete this subclause. 6.2.7 Transfer impedance Add the following new note after Table 2. NOTE The screen longitudinal d.c. resistance of 30 m /m or less is an indicator for fulfilling transfer impedance requirement of Grade 2. A measurement of d.c. resistance cannot replace a transfer impeda

15、nce measurement. 6.2.8 Coupling attenuation Replace the existing text of this subclause, including Table 3, by the following: Four types of performance are recognized for coupling attenuation. When measured using the absorbing clamp method (IEC 62153-4-5) or the triaxial method (IEC 62153-4-9), the

16、coupling attenuation in the frequency range from f = 30 MHz to 1 000 MHz shall meet the requirements indicated in Table 3. For screened cables, Type II is the minimum coupling attenuation requirement. 61156-5 Amend. 1 IEC:2012(E) 3 Table 3 Coupling attenuation Coupling attenuation type Frequency ran

17、ge MHz Coupling attenuation dB Type I 30 to 100 85 Type I 100 to 1 000 85 20 log10 (f /100) Type Ib 30 to 100 70 Type Ib 100 to 1 000 70 20 log10 (f /100) Type II 30 to 100 55 Type II 100 to 1 000 55 20 log10 (f /100) Type III 30 to 100 40 Type III 100 to 1 000 40 20 log10 (f /100) _ INTERNATIONAL ELECTROTECHNICAL COMMISSION 3, rue de Varemb PO Box 131 CH-1211 Geneva 20 Switzerland Tel: + 41 22 919 02 11 Fax: + 41 22 919 03 00 infoiec.ch www.iec.ch