1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationTesting of balanced and coaxialinformation technology cablingPart 3: Installed cabling as specified in EN 50173-4 and related standardsBS EN 61935-3:2009National forewordThis Bri
2、tish Standard is the UK implementation of EN 61935-3:2009. It wasderived by CENELEC from IEC 61935-3:2008.The CENELEC common modifications have been implemented at the appropriate places in the text and are indicated by tags (e.g. ).The UK participation in its preparation was entrusted to Technical
3、CommitteeEPL/46, Cables, wires and waveguides, radio frequency connectors and accessories for communication and signalling.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisions of aco
4、ntract. Users are responsible for its correct application. BSI 2010 ISBN 978 0 580 56360 7 ICS 33.040.50; 33.120.20Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee o
5、n 30 April 2010Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 61935-3:2009EUROPEAN STANDARD EN 61935-3 NORME EUROPENNE EUROPISCHE NORM December 2009 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique
6、Europisches Komitee fr Elektrotechnische Normung Central Secretariat: Avenue Marnix 17, B - 1000 Brussels 2009 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 61935-3:2009 E ICS 33.120.20 English version Testing of balanced and co
7、axial information technology cabling - Part 3: Installed cabling as specified in EN 50173-4 and related standards (IEC 61935-3:2008, modified) Essais des cblages de technologies de linformation symtriques et coaxiaux - Partie 3: Cblages installs selon les spcifications de lEN 50173-4 et des normes c
8、onnexes (CEI 61935-3:2008, modifie) Prfung der symmetrischen und koaxialen informationstechnischen Verkabelung - Teil 3: Installierte Verkabelung nach EN 50173-4 und entsprechenden Normen (IEC 61935-3:2008, modifiziert) This European Standard was approved by CENELEC on 2008-06-01. CENELEC members ar
9、e 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
10、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
11、 same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands,
12、Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 61935-3:2009EN 61935-3:2009 - 2 - Foreword The text of document 46/261/FDIS, future edition 1 of IEC 61935-3, prepared by IEC TC 46, Cables, wires, waveguides, R.F. connectors, R.F. and mi
13、crowave passive components and accessories, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 61935-3 on 2008-06-01. 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
14、by endorsement (dop) 2010-07-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2011-06-01 Annex ZA has been added by CENELEC. _ BS EN 61935-3:2009- 3 - EN 61935-3:2009 Endorsement notice The text of the International Standard IEC 61935-3:2008 was appro
15、ved by CENELEC as a European Standard with agreed common modifications. BS EN 61935-3:2009EN 61935-3:2009 - 4 - Annex ZA (normative) Normative references to international publications with their corresponding European publications The following referenced documents are indispensable for the applicat
16、ion of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/
17、HD applies. Publication Year Title EN/HD Year Information technology - Generic cabling systems - Part 1: General requirements EN 50173-1 1) Information technology - Generic cabling systems - Part 4: Homes EN 50173-4 1)IEC 60728-1 1)Cable networks for television signals, sound signals and interactive
18、 services - Part 1: System performance of forward paths EN 60728-1 20082)IEC 60728-12 1)Cabled distribution systems for television and sound signals - Part 12: Electromagnetic compatibility of systems 1)Undated reference. 2)Valid edition at date of issue BS EN 61935-3:2009 2 CONTENTS INTRODUCTION.5
19、1 Scope.6 2 Normative references .6 3 Terms and definitions .6 4 Home cabling conformance 7 4.1 Applications to be supported .7 4.2 General .7 4.3 Visual inspection .7 4.4 Verification 7 5 Qualification and certification testing 8 5.1 General .8 5.2 Qualification testing.8 5.3 Certification testing
20、.8 5.4 Documentation 8 6 Qualification field test instrument9 6.1 General .9 6.2 Cabling configurations tested 9 6.3 Qualification field test parameters .9 6.3.1 Wire map.9 6.3.2 Length .10 6.3.3 Qualification test10 6.3.4 Test results summary documentation.11 Figure 1 Correct pairing .9 Figure 2 In
21、correct pairing.10 BS EN 61935-3:2009EN 61935-3:2009 5 INTRODUCTION Telecommunication cabling for homes has evolved into the specification and deployment of generic cabling. This generic cabling system for homes is specified within EN 50173-4 . Formerly, there had been no test requirement for home c
22、abling. Connectivity tests and visual inspection were, at best, random and insufficient. However, bandwidth requirements of the home applications are ever increasing and home-owners need assurance that their generic cabling will indeed support intended network technologies that are delivered to the
23、home and distributed throughout the home. This part of IEC 61935 addresses both verification and qualification of home cabling. BS EN 61935-3:2009 EN 61935-3:2009 6 TESTING OF BALANCED AND COAXIAL INFORMATION TECHNOLOGY CABLING Part 3: Installed cabling as specified in EN 50173-4 and related standar
24、ds 1 Scope This part of IEC 61935 specifies conformance testing for home cabling. These conformance tests include visual inspection, verification testing and either qualification testing or certification testing. Documentation for the test results are also specified. 2 Normative references The follo
25、wing referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60728-1, Cable networks for television signals, sound
26、signals and interactive services Part 1: System performance of forward paths IEC 60728-12, Cabled distribution systems for television and sound signals Part 12: Electromagnetic compatibility of systems 3 Terms and definitions For the purposes of this document, the following definitions apply. 3.1 ce
27、rtification measurements of installed cabling specified in EN 50173-1 (e.g., class D, class E, class F); this requires field testers with traceable accuracy to national standards 3.2 qualification measurements of installed cabling for specific network technologies (e.g., 100BASE-T, 1000BASE-T, IEEE
28、1394b1): the measurement accuracy of field testers is not traceable to national standards 3.3 verification measurements of installed cable or cabling for continuity; no other transmission performance parameters other than connectivity are measured 1IEEE 1394b: 2002, High Performance Serial Bus (High
29、 Speed Supplement BS EN 61935-3:2009EN 50173-1, Information technology - Generic cabling systems Part 1: General requirements EN 50173-4, Information technology - Generic cabling systems Part 4: Homes EN 61935-3:2009 7 4 Home cabling conformance 4.1 Applications to be supported Applications that may
30、 be supported in home cabling are: ICT: such as 10, 100 1000BASE-T, IEEE 1394 being the most popular; analog telephone, ISDN and DSL applications; BCT: VHF/UHF TV signals (up to 862 MHz), FM radio signals; satellite TV signals, CCTV; control applications. 4.2 General Telecommunications cabling (e.g.
31、, voice, data, video, security, audio, control) can be damaged during the construction phases of rough-in, drywall installation, and even during the siding of the exterior. Many of these damaging faults result from causes such as nails and staples penetrating the cable, severe kinks in the cable whe
32、re the cable was pulled through a drilled hole in a stud or joist, or a cable tear where the cable sheath and conductors are damaged from pulling the cable. For these reasons, telecommunications cabling shall yield to a process to ensure conformance. This process includes: a) visual examination of t
33、he cabling; b) verification testing of the cabling; c) qualification testing or certification testing of the cabling, and d) producing a documented report of results. Visual examination and verification Qualification application specific Certification generic cabling IEC 277/084.3 Visual inspection
34、Whenever it is possible, visual inspection of each cable run shall be made after the cable has been installed, but prior to installation of insulation and drywall. Visual inspection may include but is not limited to a) obvious damage to cable (condition and workmanship); b) separation from EMC sourc
35、es; c) incorrect bend radi, and d) noticeable excessive cable length. 4.4 Verification Verification testing is performed after cable placement and prior to the installation of insulation and drywall and shall be performed to ensure proper end-to-end connectivity. Coaxial cable shall be verified to e
36、nsure connectivity to the remote end with an absence of shorts between the centre conductor and the outer shield. Twisted-pair cabling verification tests shall include: BS EN 61935-3:2009EN 61935-3:2009 8 a) continuity to the remote end; b) length, c) no shorts between any two or more conductors; d)
37、 crossed pairs; e) reversed pairs, f) split pairs, and g) any other mis-wiring; h) continuity of screens (if any). Verification testing for twisted pair shall be accomplished with connectors on both ends of the cable. Nevertheless, temporary housings may be used for later finish-out of the cabling.
38、Verification testing for cables used in certain applications may not be terminated at both ends with an 8-position modular jack (for example audio cable for speakers or cable for control systems). 5 Qualification and certification testing 5.1 General Qualification or certification testing of the cab
39、ling shall be performed after the trim-out of cabling. Typically, certification testing is performed for the rigorous needs of home cabling for commercial use while qualification testing is performed for dwelling homes. 5.2 Qualification testing Qualification testing will determine if the cabling wi
40、ll support certain network technologies (e.g., 1000BASE-T, 100BASE-T, IEEE 1394). For example two cabling runs (cable A and cable B) pass the verification test. A qualification test may show that cable A is only capable of supporting 10BASE-T, while cable B is able to support Gigabit Ethernet. Quali
41、fication testers do not have traceable accuracy to national standards but do provide confidence that specific applications will work. 5.3 Certification testing Certification testing will determine if the cabling meets or exceeds the specific cabling measurements specified in EN 50173-12. For example
42、, installed class D cabling is measured in the frequency range of 1 MHz to 100 MHz for specific cabling characteristic requirements such as propagation delay, delay skew, insertion loss, NEXT, PSNEXT, ELFEXT, PSELFEXT and return loss. Certification testers have traceable accuracy to national standar
43、ds, and certification testing is recommended for mission critical cabling installations where defects can cause significant economic damages to the network owner. 5.4 Documentation The qualification tests shall be summarized within a documented report generated by the test instrument. A copy of the
44、test results summary shall be provided to the owner of the home as well as placed in the distribution centre. 2The measurements are specified in EN 50173-1 , second edition, 2002. BS EN 61935-3:2009 EN 61935-3:2009 9 6 Qualification field test instrument 6.1 General This clause applies to field test
45、 measurements of installed home cabling designed in accordance with EN 50173-4 . The information contained in this clause uses the links defined in EN 50173-4 and specifies parameters for qualification field testers. 6.2 Cabling configurations tested The cabling test configurations are described in
46、EN 50173-4 . 6.3 Qualification field test parameters 6.3.1 Wire map A conductor map test is intended to verify correct pin termination of the 8-pin connectors at each end of twisted pair cabling and to check for installation connectivity errors. For each of the conductors in the cable and the screen
47、(s), if any, the conductor map indicates: a) continuity to the remote end; b) shorts between any two or more conductors/screen(s); c) transposed pairs; d) reversed pairs; e) split pairs; f) any other connection errors; g) continuity of screens (if any). Correct connectivity of telecommunications out
48、let/connectors is defined in EN 50173-4 (or equivalent) and is illustrated in Figure 1(for four pair cables). 1 2 3 6 5 4 7 8 Screen 12 3 6 5 4 7 8 Screen IEC 278/08Figure 1 Correct pairing A reversed pair occurs when the polarity of one wire pair is reversed at one end of the link (also called a ti
49、p/ring reversal). See Figure 2a for an illustration of a reversed pair. A transposed pair occurs when the two conductors in a wire pair are connected to the position for a different pair at the remote connection. See Figure 2b for an illustration of transposed pairs. NOTE Transposed pairs are sometimes referred to as crossed pairs. BS EN 61935-3:2009 EN 61935-3:2009 10 Split pairs occur when pin to pin continuity is maintained but physical pai
copyright@ 2008-2019 麦多课文库（www.mydoc123.com）网站版权所有
备案/许可证编号：苏ICP备17064731号-1