1、 TIA STANDARD ANSI/TIA-568-B.2-5-2003 Approved: January 16, 2003 Commercial Building Telecommunications Cabling Standard Part 2: Balanced Twisted-Pair Cabling Components Addendum 5 Corrections to TIA/EIA-568-B.2 TIA-568-B.2-5 (Addendum No. 5 to TIA/EIA-568-B.2) January 2003 TELECOMMUNICATIONS INDUST
2、RY ASSOCIATION Representing the telecommunications industry in association with the Electronic Industries Alliance Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NOTICE TIA Eng
3、ineering Standards and Publications are designed to serve the public interest through eliminating misunderstandings between manufacturers and purchasers, facilitating interchangeability and improvement of products, and assisting the purchaser in selecting and obtaining with minimum delay the proper
4、product for their particular need. The existence of such Standards and Publications shall not in any respect preclude any member or non-member of TIA from manufacturing or selling products not conforming to such Standards and Publications. Neither shall the existence of such Standards and Publicatio
5、ns preclude their voluntary use by Non-TIA members, either domestically or internationally. Standards and Publications are adopted by TIA in accordance with the American National Standards Institute (ANSI) patent policy. By such action, TIA does not assume any liability to any patent owner, nor does
6、 it assume any obligation whatever to parties adopting the Standard or Publication. Further details of the development process are available in the TIA Engineering Manual, located at http:/www.tiaonline.org/standards/sfg/engineering_manual.cfm This Standard does not purport to address all safety pro
7、blems associated with its use or all applicable regulatory requirements. It is the responsibility of the user of this Standard to establish appropriate safety and health practices and to determine the applicability of regulatory limitations before its use. (From Standards Proposal No. 3-4426-AD5, fo
8、rmulated under the cognizance of the TIA TR-42.7 Subcommittee on Telecommunications Copper Cabling Systems.) Published by TELECOMMUNICATIONS INDUSTRY ASSOCIATION 2003 Standards and Technology Department 2500 Wilson Boulevard Arlington, VA 22201 U.S.A. PRICE: Please refer to current Catalog of TIA TE
9、LECOMMUNICATIONS INDUSTRY ASSOCIATION STANDARDS AND ENGINEERING PUBLICATIONS or call Global Engineering Documents, USA and Canada (1-800-854-7179) International (303-397-7956) or search online at http:/www.tiaonline.org/standards/search_n_order.cfm All rights reserved Printed in U.S.A. Copyright Tel
10、ecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NOTICE OF DISCLAIMER AND LIMITATION OF LIABILITY The document to which this Notice is affixed (the “Document”) has been prepared by one or mor
11、e Engineering Committees or Formulating Groups of the Telecommunications Industry Association (“TIA”). TIA is not the author of the Document contents, but publishes and claims copyright to the Document pursuant to licenses and permission granted by the authors of the contents. TIA Engineering Commit
12、tees and Formulating Groups are expected to conduct their affairs in accordance with the TIA Engineering Manual (“Manual”), the current and predecessor versions of which are available at http:/www.tiaonline.org/standards/sfg/engineering_manual.cfm. TIAs function is to administer the process, but not
13、 the content, of document preparation in accordance with the Manual and, when appropriate, the policies and procedures of the American National Standards Institute (“ANSI”). TIA does not evaluate, test, verify or investigate the information, accuracy, soundness, or credibility of the contents of the
14、 Document. In publishing the Document, TIA disclaims any undertaking to perform any duty owed to or for anyone. The use or practice of contents of this Document may involve the use of intellectual property rights (“IPR”), including pending or issued patents, or copyrights, owned by one or more parti
15、es. TIA makes no search or investigation for IPR. When IPR consisting of patents and published pending patent applications are claimed and called to TIAs attention, a statement from the holder thereof is requested, all in accordance with the Manual. TIA takes no position with reference to, and discl
16、aims any obligation to investigate or inquire into, the scope or validity of any claims of IPR. TIA does not enforce or monitor compliance with the contents of the Document. TIA does not certify, inspect, test or otherwise investigate products, designs or services or any claims of compliance with th
17、e contents of the Document. ALL WARRANTIES, EXPRESS OR IMPLIED, ARE DISCLAIMED, INCLUDING WITHOUT LIMITATION, ANY AND ALL WARRANTIES CONCERNING THE ACCURACY OF THE CONTENTS, ITS FITNESS OR APPROPRIATENESS FOR A PARTICULAR PURPOSE OR USE, ITS MERCHANTABILITY AND ITS NON-INFRINGEMENT OF ANY THIRD PART
18、YS INTELLECTUAL PROPERTY RIGHTS. TIA EXPRESSLY DISCLAIMS ANY AND ALL RESPONSIBILITIES FOR THE ACCURACY OF THE CONTENTS AND MAKES NO REPRESENTATIONS OR WARRANTIES REGARDING THE CONTENTS COMPLIANCE WITH ANY APPLICABLE STATUTE, RULE OR REGULATION, OR THE SAFETY OR HEALTH EFFECTS OF THE CONTENTS OR ANY
19、PRODUCT OR SERVICE REFERRED TO IN THE DOCUMENT OR PRODUCED OR RENDERED TO COMPLY WITH THE CONTENTS. TIA SHALL NOT BE LIABLE FOR ANY AND ALL DAMAGES, DIRECT OR INDIRECT, ARISING FROM OR RELATING TO ANY USE OF THE CONTENTS CONTAINED HEREIN, INCLUDING WITHOUT LIMITATION ANY AND ALL INDIRECT, SPECIAL, I
20、NCIDENTAL OR CONSEQUENTIAL DAMAGES (INCLUDING DAMAGES FOR LOSS OF BUSINESS, LOSS OF PROFITS, LITIGATION, OR THE LIKE), WHETHER BASED UPON BREACH OF CONTRACT, BREACH OF WARRANTY, TORT (INCLUDING NEGLIGENCE), PRODUCT LIABILITY OR OTHERWISE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. THE FOREG
21、OING NEGATION OF DAMAGES IS A FUNDAMENTAL ELEMENT OF THE USE OF THE CONTENTS HEREOF, AND THESE CONTENTS WOULD NOT BE PUBLISHED BY TIA WITHOUT SUCH LIMITATIONS. Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitte
22、d without license from IHS-,-,-PLEASE! DONT VIOLATE THE LAW! This document is copyrighted by the TIA and may not be reproduced without prior permission of the Telecommunications Industry Association. For information consult our website at http:/www.tiaonline.org/about/faqDetail.cfm?id=18 Organizatio
23、ns may obtain permission to reproduce a limited number of copies through entering into a license agreement. For information, contact: Global Engineering Documents 15 Inverness Way East Englewood, CO 80112-5704 U.S.A. or call U.S.A. and Canada 1-800-854-7179, International (303) 397-7956 Copyright Te
24、lecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TIA/EIA-568-B.2-5 Corrections to TIA/EIA-568-B.2 TABLE OF CONTENTS 1 INTRODUCTION .2 2 CLAUSE REVISIONS2 D.5.2 Applicability .2 D.5.8 De-embe
25、dding reference jack NEXT loss measurement 2 D.6 Modular test plug construction2 1 Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TIA/EIA-568-B.2-5 2 1 INTRODUCTION The purpose
26、 of this addendum is to correct certain references in TIA/EIA-568-B.2. These revisions are identified in the following text with additions shown in bold italics and deletions shown as strikeout. Other paragraphs in the clause, or in TIA/EIA-568-B.2 that are not shown remain the same. 2 CLAUSE REVISI
27、ONS D.5.2 Applicability For the purposes of this Standard, a modular test plug consists of short lengths of solid or stranded UTP twisted-pair conductors with a modular plug terminated on one end. Modular test plugs may be constructed from cross-connect (patch) and equipment cords. Clause D.7 specif
28、ies a systematic termination procedure that may be used to manufacture a set of plugs likely to satisfy the modular test plug requirements of clause D.6.10 D.5.10. D.5.8 De-embedding reference jack NEXT loss measurement Measure the NEXT loss of the de-embedding reference plug mated to the de-embeddi
29、ng reference jack for all 6 pair combinations as shown in figure D.8. Maintain correct wire pair polarity as specified in clause D.6.5 D.5.6. D.6 Modular test plug construction It is necessary to obtain a set of test plugs that complies with clause D.6.10 D.5.10, to perform connecting hardware testi
30、ng. It is acceptable to obtain these test plugs by cutting them from the ends of production patch cords. Because of the variation in production cords, and the large number of plugs that might be required to obtain test plugs, the following alternate procedure is suggested. Copyright Telecommunicatio
31、ns Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
