1、BRITISH STANDARDBS EN 50346:2002 +A :2002 9Information technology Cabling installation Testing of installed cabling ICS 35.110g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60
2、g53g44g42g43g55g3g47g36g58National forewordThis British Standard is the UK implementation of EN 50346:2002+A2:2009. It supersedes BS EN 50346:2002+A1:2007 which is withdrawn. The start and finish of text introduced or altered by amendment is indicated in the text by tags. Tags indicating changes to
3、CENELEC text carry the number of the CENELEC amendment. For example, text altered by CENELEC amendment A1 is indicated by !“.The UK participation in its preparation was entrusted by Technical Committee TCT/7, Telecommunications Installation requirements, to Subcommittee TCT/7/-/1, Cable installation
4、 expert panel. A list of organizations represented on this subcommittee can be obtained on request to its secretary. 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 cannot c
5、onfer immunity from legal obligations. BS EN 50346:2002+A :200This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 January 2003 BSI 2010Amendments/corrigenda issued since publicationDate Comments 31 March 2008 Implementation of CENELEC amendmen
6、t A1:200728 February 2010 Implementation of CENELEC amendment A2:2009ISBN 978 0 580 64410 82 9( 8 523( $ 1 67$ 1 $ 5 1 250 (8 523e ( 11( 8 523b , 6 furthermore, it introduces an XML schema to ease the exchange and further processing of data captured by field test equipment. As an integral element of
7、 this standard, an electronic version of the XML schema is provided in the format of an XSD file. _ 2 BS EN 50346:2002+A2:2009EN 50346:2002+A2:2009 (E)Foreword to amendment A2 This amendment to the European Standard EN 50346:2002 was prepared by the Technical Committee CENELEC TC 215, Electrotechnic
8、al aspects of telecommunication equipment. The text of the draft was submitted to the Unique Acceptance Procedure and was approved by CENELECThe following dates were fixed: latest date by which the amendment has to be implemented at national level by publication of an identical national standard or
9、by endorsement (dop) 2010-05-01 latest date by which the national standards conflicting with the amendment have to be withdrawn (dow) 2012-05-01 This amendment has been prepared to align Clause 5 with the latest edition of EN 61935-1. In addition, requirements for measuring balanced cabling paramete
10、rs ACR-F, PSANEXT, PSAACR-F and unbalanced parameters (LCL, TCL and ELTCTL) as well as coaxial cabling have been added. For the convenience of the reader, Clause 5 has been reproduced completely in this amendment. as amendment A2 to EN 50346:2002 on 2009-05-01. 3 BS EN 50346:2002+A2:2009EN 50346:200
11、2+A2:2009 (E) 7 null S D L U null WRnull S D L U D Q G SRZH UVXPnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnull null ( TXD OOH Y H O I D U
12、H Q GFURVVWD ON ORVVnull ( / )(; 7 null S D L U null WRnull S D L U D Q G SRZH UVXPnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnull null null nullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnu
13、llnullnullnullnullnullnullnullnullnullnull nullnullnull nullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnull
14、nullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnull nullnullnull 7 ( TXD OOH Y H O I D U H Q GFURVVWD ON ORVV) : + 0 ) XOO ZL G W KKD O I P D L PXP1 (
15、; 7 1 H D U H Q GFURVVWD ON ORVV36$ RZH UVXPQH D U H Q GFURVVWD ON ORVV7 ( 67 ( 43 7H VWH TXL SPH QWACR-F Attenuation to crosstalk ratio at the far-end ACR-N Attenuation to crosstalk ratio at the near-end ELTCTL Equal level transverse conversion transfer loss LCL Longitudinal conversion loss PSACR-F
16、 Power sum attenuation to crosstalk ratio at the far-end PSACR-N Power sum attenuation to crosstalk ratio at the near-end PSANEXT Power sum alien (exogenous) near-end crosstalk loss PSAACR-F Power sum attenuation to alien (exogenous) crosstalk ratio at the far-end TCL Transfer conversion loss #$ 13
17、BS EN 50346:2002+A2:2009EN 50346:2002+A2:2009 (E) null 6 P E ROV7 H UP L Q D W L RQ SRL QW b) for the measurement of screened cabling, the screen terminations of the cabling interface adaptor shall be of low impedance. 5.7.2 Documentation The measured results shall be reported in graphical or tabula
18、r format. The test report shall also include the requirements of the relevant cabling or application standard and the measurement accuracy. Results for all pairs shall be reported. It shall be explicitly noted if the measured results do not conform to the requirements. 5.8 Equal level far end crosst
19、alk loss (ELFEXT, pair-to-pair and power sum) 5.8.1 Test method See EN 61935-1:2009, 5.3.8, for the measurement of ELFEXT (pair-to-pair and power sum) at frequencies up to 600 MHz using portable field test equipment. The measurement of ELFEXT using laboratory test equipment requires synchronization
20、between local and remote test equipment. Where such equipment is used a) the cable within the cabling interface adaptors shall be as short as possible, b) for the measurement of screened cabling, the screen terminations of the cabling interface adaptors shall be of low impedance. The measurement of
21、ELFEXT using laboratory test equipment without synchronization between local and remote test equipment is not supported by this standard. 5.8.2 Documentation The measured results shall be reported in graphical or tabular format. The test report shall also include the requirements of the relevant cab
22、ling or application standard and the measurement accuracy. Results for all pairs shall be reported. It shall be explicitly noted if the measured results do not conform to the requirements. #$ 21 BS EN 50346:2002+A2:2009EN 50346:2002+A2:2009 (E)5.9 Attenuation to crosstalk ratio far end (ACR-F, pair-
23、to-pair and power sum) 5.9.1 Test method See EN 61935-1:2009, 5.3.8, for the measurement of ACR-F (pair-to-pair and power sum) at frequencies up to 600 MHz using portable field test equipment. The measurement of ACR-F using laboratory test equipment requires synchronization between local and remote
24、test equipment. Where such equipment is used the cable within the cabling interface adaptors shall be as short as possible. For the measurement of screened cabling, the screen terminations of the cabling interface adaptors shall be of low impedance. The measurement of ACR-F using laboratory test equ
25、ipment without synchronization between local and remote test equipment is not supported by this standard. 5.9.2 Documentation The measured results shall be reported in graphical or tabular format. The test report shall also include the requirements of the relevant cabling or application standard and
26、 the measurement accuracy. Results for all pairs shall be reported. It shall be explicitly noted if the measured results do not conform to the requirements. 5.10 Attenuation to crosstalk ratio near end (ACR-N, pair-to-pair and power sum) NOTE In previous editions of this standard, this parameter was
27、 called ACR. 5.10.1 Calculation For the calculation of ACR-N see EN 61935-1:2009, 5.3.7. 5.10.2 Documentation The measured results shall be reported in graphical or tabular format. The test report shall also include the requirements of the relevant cabling or application standard and the measurement
28、 accuracy. Results for all pairs shall be reported. It shall be explicitly noted if the measured results do not conform to the requirements. 5.11 Return loss 5.11.1 Test method See EN 61935-1:2009, 5.3.9, for the measurement of return loss on installed cabling at frequencies up to 600 MHz using port
29、able field test equipment. It is possible to use laboratory test equipment to perform tests under the following conditions: a) the cable within the cabling interface adaptor shall be as short as possible; b) for the measurement of screened cabling, the screen terminations of the cabling interface ad
30、aptor shall be of low impedance. #$ 22 BS EN 50346:2002+A2:2009EN 50346:2002+A2:2009 (E)5.11.2 Documentation The measured results shall be reported in graphical or tabular format. The test report shall also include the requirements of the relevant cabling or application standard and the measurement
31、accuracy. Results for all pairs shall be reported. It shall be explicitly noted if the measured results do not conform to the requirements. 5.12 Unbalance parameters NOTE EN 61935-1:2009 only contains methods for the laboratory testing of cabling for the parameters of this subclause. Therefore no re
32、ference is given for field testing. 5.12.1 Unbalance attenuation, near end (LCL) EN 50173-1 does not contain requirements for this parameter, but it may be applicable to other cabling. 5.12.2 Transverse conversion loss (TCL) EN 50173-1 contains requirements for this parameter. 5.12.3 Equal level tra
33、nsverse conversion transfer loss (ELTCTL) EN 50173-1 contains requirements for this parameter. 5.13 Coupling attenuation 5.13.1 Test method See EN 50289-1-16 for the measurement of coupling attenuation of installed cabling. Measurement methods for sample links in a laboratory environment are contain
34、ed in EN 50289-1-15. 5.13.2 Documentation The measured results shall be reported in graphical or tabular format. The test report shall also include the requirements of the relevant cabling or application standard and the measurement accuracy. Results for all pairs shall be reported. It shall be expl
35、icitly noted if the measured results do not conform to the requirements. 5.14 Direct current (d.c.) loop resistance 5.14.1 Test method See EN 61935-1:2009, 5.3.10, for the measurement of d.c. loop resistance on installed cabling. 5.14.2 Documentation The measured results shall be reported in tabular
36、 format. The test report shall also include the requirements of the relevant cabling or application standard and the measurement accuracy. Results for all pairs shall be reported. It shall be explicitly noted if the measured results do not conform to the requirements. #$ 23 BS EN 50346:2002+A2:2009E
37、N 50346:2002+A2:2009 (E)5.15 Resistance unbalance 5.15.1 Parameter The requirements for resistance unbalance Ruwithin the cabling under test is defined as the difference in resistance of the two conductors of a pair expressed either as a percentage or as an absolute value. For evaluation of Ru, the
38、conductors within the pair or channel within the cabling under test have to be measured individually. It is possible to use another conductor for a signal return path allowing a loop resistance to be measured. The resistance of each conductor is then calculated by mathematical methods. 5.15.2 Test m
39、ethod 5.15.2.1 Test equipment and set-up The resistance of the conductors shall be measured by means of equipment capable of measuring accurately to within 0,5 % of the values to be determined. 5.15.2.2 Measurement The current density shall not exceed 1 A/mm of conductor to avoid any significant inc
40、rease of temperature during the test. 5.15.2.3 Computation of resistance unbalance as a percentage The equation for the computation of resistance unbalance as a percentage is ()100minmaxminmax+=RRRRRu in % (3) Where Rmaxresistance, in , for the conductor with the higher resistance value, Rminresista
41、nce, in , for the conductor with the lower resistance value. 5.15.3 Documentation The measured results shall be reported in tabular format. The test report shall also include the requirements of the relevant cabling or application standard and the measurement accuracy. Results for all pairs shall be
42、 reported. It shall be explicitly noted if the measured results do not conform to the requirements. 5.16 Power sum alien near end crosstalk (PSANEXT) 5.16.1 Test method One method is referenced in EN 61935-1:2009, 5.4. 5.16.2 Documentation The measured results shall be reported in graphical or tabul
43、ar format. The test report shall also include the requirements of the relevant cabling or application standard and the measurement accuracy. #$ 24 BS EN 50346:2002+A2:2009EN 50346:2002+A2:2009 (E)Results for all pairs shall be reported. It shall be explicitly noted if the measured results do not con
44、form to the requirements. 5.17 Power sum alien far end crosstalk (PSAACR-F) 5.17.1 Test method One method is referenced in EN 61935-1:2009, 5.4. 5.17.2 Documentation The measured results shall be reported in graphical or tabular format. The test report shall also include the requirements of the rele
45、vant cabling or application standard and the measurement accuracy. Results for all pairs shall be reported. It shall be explicitly noted if the measured results do not conform to the requirements. 5.18 Coaxial cabling 5.18.1 Test method Test methods referenced in the relevant cabling or applications
46、 standards shall be applied. 5.18.2 Documentation The results shall be reported in graphical or tabular format. The test report shall also include the requirements of the relevant cabling or application standard. !6 Test parameters for optical fibre cabling 6.1 General requirements This standard app
47、lies the requirements of the test methods specified by ISO/IEC 14763-3 to information technology cabling within the scope of this standard subject to the following: a) the results shall be compared with relevant limits specified in EN 50173-1 or the applicable application-specific standard; b) the a
48、dditional requirements of this clause shall be applied. 6.2 Channel and link attenuation 6.2.1 Treatment of measured results 6.2.2.1 All-silica optical fibre cabling terminated with connecting hardware having transmission performance specified in EN 50173-1 See ISO/IEC 14763-3. 6.2.2.2 All-silica optical fibre cabling terminated with connecting hardware having transmission performance other than that specified in EN 50173-1 The calculation of limits and measurement uncertainty shall take into account the performance of reference and non-referen
