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    CSA T568 2-3-2005 Commercial building telecommunications cabling standard Part 2 Balanced twisted pair cabling components Addendum 3 Additional considerations for insertion loss.pdf

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    CSA T568 2-3-2005 Commercial building telecommunications cabling standard Part 2 Balanced twisted pair cabling components Addendum 3 Additional considerations for insertion loss.pdf

    1、 T568.2-3-05(ANSI/TIA/EIA-568-B.2-3-2002)Commercial building telecommunications cabling standard Part 2: Balanced twisted pair cabling components Addendum 3 Additional considerations for insertion loss and return loss pass/fail determination CSA Standard T568.2-3-05 (ANSI/TIA/EIA-568-B.2-3-2002) Com

    2、mercial building telecommunications cabling standard Part 2: Balanced twisted pair cabling components Addendum 3 Additional considerations for insertion loss and return loss pass/fail determination Published in May 2005 by Canadian Standards Association A not-for-profit private sector organization 5

    3、060 Spectrum Way, Suite 100, Mississauga, Ontario, Canada L4W 5N61-800-463-6727 416-747-4044 Visit our Online Store at www.ShopCSA.ca Commercial building telecommunications cabling standard Part 2: Balanced twisted pair cabling components Addendum 3 T568.2-3-05 Additional considerations for insertio

    4、n loss and return loss pass/fail determination CSA/2 Canadian Standards Association May 2005 T568.2-3-05 Commercial building telecommunications cabling standard Part 2: Balanced twisted pair cabling components Addendum 3 Additional considerations for insertion loss and return loss pass/fail determin

    5、ation CSA Preface This is the first edition of CSA T568.2-3, Commercial building telecommunications cabling standard Part 2: Balanced twisted pair cabling components Addendum 3 Additional considerations for insertion loss and return loss pass/fail determination. This Standard is an adoption of the i

    6、dentically titled ANSI/TIA/EIA (American National Standards Institute/Telecommunications Industry Association/Electronic Industries Alliance) Standard 568-B.2-3-2002 and is the product of the Telecommunications Industry Association TR-42 Technical Committee, which included a number of Canadian membe

    7、rs in order to ensure that Canadian perspectives and requirements were addressed. It is written in SI (metric) units with yard/pound (imperial) units in parentheses. This Standard has been adopted with no technical deviations. Where code requirements or regulations necessitate changes from US to Can

    8、adian references, they should be made by the user, as follows: (a) Throughout this Standard, replace the term “American” with “Canadian”, as applicable. (b) Throughout this Standard, replace the term “state” with “provincial or territorial”, as applicable. (c) Throughout this Standard, replace “NEC”

    9、 with “CE Code, Part I” (Canadian Electrical Code), as applicable. In addition, (i) where reference is made to “conduit”, replace it with “conduit/EMT” (electrical metallic tubing) because, in accordance with the Canadian Electrical Code, Part I, EMT is not considered a type of conduit; and (ii) the

    10、 definitions of the following terms are to be taken from the Canadian Electrical Code, Part I: “Bonding”, “Ground”, and “Raceway”. (d) Throughout this Standard, where reference is made to “FCC”, replace it with “CRTC” (Canadian Radio-television and Telecommunications Commission), or “Industry Canada

    11、”, as applicable. (e) The following Standard, published by the Canadian Standards Association, is an adoption of a TIA/EIA Standard. The requirements of this CSA Standard take precedence over the TIA/EIA Standard on which it is based; any reference in CSA T568.2-3 to the TIA/EIA Standard is to be re

    12、placed by a reference to the equivalent Canadian Standard: T568.2-05, Commercial building telecommunications cabling standard Part 2: Balanced twisted-pair cabling components. Commercial building telecommunications cabling standard Part 2: Balanced twisted pair cabling components Addendum 3 T568.2-3

    13、-05 Additional considerations for insertion loss and return loss pass/fail determination May 2005 Canadian Standards Association CSA/3 (f) Throughout this Standard, replace the term “Listed” with “Approved as applied to electrical equipment”. This Standard was reviewed for Canadian adoption by the C

    14、SA Technical Committee on Telecommunications Wiring Systems, under the jurisdiction of the Strategic Steering Committee on Information and Communications Technology, and has been formally approved by the Technical Committee. A list of the members of the Technical Committee is available upon request.

    15、 May 2005 Canadian Standards Association 2005 All rights reserved. No part of this publication may be reproduced in any form whatsoever without the prior permission of the publisher. TIA/EIA material is reprinted with permission. Inquiries regarding this CSA Standard should be addressed to Canadian

    16、Standards Association 5060 Spectrum Way, Suite 100, Mississauga, Ontario, Canada L4W 5N6 1-800-463-6727 416-747-4044 www.csa.ca ANSI/TIA/EIA-568-B.2-3-2002 Approved: February 27, 2002 TIA/EIA STANDARD Cm TIA/EIA-568-B.2-3 Commercial Building Telecommunications Cabling Standard Part 2: Balanced Twist

    17、ed Pair Cabling Components Addendum 3 Additional Considerations for Insertion Loss and Return Loss Pass/Fail Determination TIA/EIA-568-B.2-3 (Addendum No. 3 to TIA/EIA-568-B.2) MARCH 2002 TELECOMMUNICATIONS INDUSTRY ASSOCIATION The Telecommunications Industry Association represents the communication

    18、s sector of NOTICE TIA/EIA Engineering 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

    19、with minimum delay the proper product for his particular need. Existence of such Standards and Publications shall not in any respect preclude any member or nonmember of TIA/EIA from manufacturing or selling products not conforming to such Standards and Publications, nor shall the existence of such S

    20、tandards and Publications preclude their voluntary use by those other than TIA/EIA members, whether the standard is to be used either domestically or internationally. Standards and Publications are adopted by TIA/EIA in accordance with the American National Standards Institute (ANSI) patent policy.

    21、By such action, TIA/EIA does not assume any liability to any patent owner, nor does it assume any obligation whatever to parties adopting the Standard or Publication. This Standard does not purport to address all safety problems associated with its use or all applicable regulatory requirements. It i

    22、s 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 Nos.3-4426-AD3, formulated under the cognizance of the TIA TR-42.7 Subcommittee on Telecommunic

    23、ations Copper Cabling Systems.) Published by g211TELECOMMUNICATIONS INDUSTRY ASSOCIATION 2002 Standards and Technology Department 2500 Wilson Boulevard Arlington, VA 22201 All rights reserved PLEASE! DONT VIOLATE THE LAW! This document is copyrighted by the TIA and may not be reproduced without perm

    24、ission. Organizations 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 or call U.S.A. and Canada 1-800-854-7179, International (303) 397-7956

    25、NOTICE OF DISCLAIMER AND LIMITATION OF LIABILITY The document to which this Notice is affixed has been prepared by one or more Engineering Committees of the Telecommunications Industry Association (“TIA”). TIA is not the author of the document contents, but publishes and claims copyright to the docu

    26、ment pursuant to licenses and permission granted by the authors of the contents. TIA Engineering Committees 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

    27、/sfg/engineering_manual.cfm. TIAs function is to administer the process, but not the content, of document preparation in accordance with the Manual and, when appropriate, the policies and procedures of the American National Standards Institute (“ANSI”). THE USE OR PRACTICE OF CONTENTS OF THIS DOCUME

    28、NT MAY INVOLVE THE USE OF INTELLECTUAL PROPERTY RIGHTS (“IPR”), INCLUDING PENDING OR ISSUED PATENTS, OR COPYRIGHTS, OWNED BY ONE OR MORE PARTIES. TIA MAKES NO SEARCH OR INVESTIGATION FOR IPR. WHEN IPR CONSISTING OF PATENTS AND PUBLISHED PATENT APPLICATIONS ARE CLAIMED AND CALLED TO TIAS ATTENTION, A

    29、 STATEMENT FROM THE HOLDER THEREOF IS REQUESTED, ALL IN ACCORDANCE WITH THE MANUAL. TIA TAKES NO POSITION WITH REFERENCE TO, AND DISCLAIMS ANY OBLIGATION TO INVESTIGATE OR INQUIRE INTO, THE SCOPE OR VALIDITY OF ANY CLAIMS OF IPR. ALL WARRANTIES, EXPRESS OR IMPLIED, ARE DISCLAIMED, INCLUDING WITHOUT

    30、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 PARTYS INTELLECTUAL PROPERTY RIGHTS. TIA EXPRESSLY DISCLAIMS ANY AND ALL RESPONSIBILITIES FOR THE ACCU

    31、RACY OF THE CONTENTS AND MAKES NO REPRESENTATIONS OR WARRANTIES REGARDING THE CONTENTS COMPLIANCE WITH ANY APPLICABLE STATUTE, RULE OR REGULATION. 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 WITH

    32、OUT LIMITATION ANY AND ALL INDIRECT, SPECIAL, INCIDENTAL 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 ADVISE

    33、D OF THE POSSIBILITY OF SUCH DAMAGES. THE FOREGOING 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. TIA/EIA-568-B.2-3 ADDITIONAL CONSIDERATIONS FOR INSERTION LOSS AND RETURN LOSS PASS/FAIL DETE

    34、RMINATION TABLE OF CONTENTS 1 INTRODUCTION.1 2 CLAUSE REVISIONS .1 i TIA/EIA-568-B.2-3 1 INTRODUCTION The purpose of this addendum is to add clause I.2.5 to TIA/EIA-568-B.2. These revisions are identified in the following text with additions shown in bold italics and deletions shown as strikeout. 2

    35、CLAUSE REVISIONS I.2.5 Additional considerations for insertion loss and return loss pass/fail determination Due to accuracy considerations, measured insertion loss values less than 3 dB shall not be marked with an asterisk and shall not be used for pass/fail determination. wWhen the measured inserti

    36、on loss is less than 3 dB, the measured return loss shall not be used in determining a fail. Return loss values greater than 25 dB may be reported as “25 dB”. 1 I consent to CSA collecting and using the above information to facilitate the collection of my suggestions and comments. Visit CSAs policy

    37、on privacy at www.csagroup.org/legal to find out how we protect your personal information.Jaccepte que la CSA conserve et utilise les renseignements ci-dessus afin de faciliter la rceptionde mes suggestions et commentaires.Consultez la politique CSA en matire de confidentialit au www.csagroup.org/le

    38、gal pour savoir comment nous protgeons vos renseignements personnels.Nhsitez pas nous faire part de vos suggestions et de vos commentaires. Au moment de soumettre des propositions de modification aux normes CSA et autres publications CSA prire de fournir les renseignements demands ci-dessous et de f

    39、ormuler les propositions sur une feuille volante. Il est recommand dinclurele numro de la norme/publicationle numro de larticle, du tableau ou de la figure visla formulation proposela raison de cette modification.Proposition de modificationCSA welcomes your suggestions and comments. To submit your p

    40、roposals for changes to CSA Standards and other CSA publications, please supply the information requested below and attach your proposal for change on a separate page(s). Be sure to include theStandard/publication numberrelevant Clause, Table, and/or Figurenumber(s)wording of the proposed changerationale for the change.Proposalfor changeNom/Name: Affiliation: Adresse/Address: Ville/City: tat/Province/State: Pays/Country: Code postal/Postal/Zip code: Tlphone/Telephone: Tlcopieur/Fax: Date: ISBN 1-55397-852-8PRINTEDINCANADAIMPRIMEAU CANADA


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