BS EN 50289-1-1-2017 Communication cables Specifications for test methods Electrical test methods General requirements《通信电缆 试验方法规范 电气试验方法 一般要求》.pdf

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1、BS EN 50289-1-1:2017Communication cables Specifications for test methodsPart 1-1: Electrical test methods General requirementsBSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS EN 50289-1-1:2017 BRITISH STANDARDNational forewordThis British Standard is the UK impleme

2、ntation of EN 50289-1-1:2017. It supersedes BS EN 50289-1-1:2001 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee EPL/46, Cables, wires and waveguides, radio frequency connectors and accessories for communication and signalling.A list of organizations

3、represented on this committee 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. The British Standards Institution 2017.Published by BSI Standards Limited 2017ISBN 978

4、 0 580 94376 8 ICS 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 on 31 March 2017.Amendments/corrigenda issued since publicationDate T e x t a f f e c t

5、e dBS EN 50289-1-1:2017EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 50289-1-1 March 2017 ICS 33.120.20 Supersedes EN 50289-1-1:2001 English Version Communication cables - Specifications for test methods - Part 1-1: Electrical test methods - General requirements Cbles de communication - Spcif

6、ications des mthodes dessai Partie 1-1: Mthodes dessais lectriques - Prescriptions generals Kommunikationskabel - Spezifikationen fr Prfverfahren Teil 1-1: Elektrische Prfverfahren - Allgemeines This European Standard was approved by CENELEC on 2016-12-16. CENELEC members are bound to comply with th

7、e 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 the CEN-CENELEC Managemen

8、t Centre 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 CEN-CENELEC Management Centre has the same

9、 status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lith

10、uania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrot

11、echnische Normung CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2017 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members. Ref. No. EN 50289-1-1:2017 E BS EN 50289-1-1:2017EN 50289-1-1:2017 2 Contents PageEuropean foreword . 3 1 Sc

12、ope 4 2 Normative references 4 3 Terms and definitions . 5 4 Sampling 5 4.1 Cable under test (CUT) 5 4.2 Pre-conditioning . 5 5 Tests . 5 6 Test conditions 5 6.1 Ambient temperature . 5 6.2 Tolerance on temperature values . 5 6.3 Frequency and waveform of test voltages for dielectric strength test.

13、5 6.4 Frequency range and stability for frequency related measurements . 6 6.5 Measurement on drums . 6 7 Measurement methods and equipment. 6 7.1 Calibration . 6 7.2 Requirements for balanced to unbalanced converters (Baluns) 6 7.3 Balun-less test method 8 8 Test report 14 Annex A (informative) Exa

14、mple derivation of mixed mode parameters using the modal decomposition technique . 15 Annex B (informative) Verification artefacts 18 Bibliography 21 BS EN 50289-1-1:2017 EN 50289-1-1:2017 3 European foreword This document EN 50289-1-1:2017 has been prepared by CLC/TC 46X “Communication cables“. The

15、 following dates are fixed: latest date by which this document has to beimplemented at national level by publication of anidentical national standard or by endorsement(dop) 2017-09-16 latest date by which the national standards conflictingwith this document have to be withdrawn(dow) 2019-12-16 This

16、document supersedes EN 50289-1-1:2001. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights. EN 50289-1, Communication cables Specifications for test m

17、ethods, is currently composed with the following parts: Part 1-1: Electrical test methods General requirements; Part 1-2: Electrical test methods DC resistance; Part 1-3: Electrical test methods Dielectric strength; Part 1-4: Electrical test methods Insulation resistance; Part 1-5: Electrical test m

18、ethods Capacitance; Part 1-6: Electrical test methods Electromagnetic performance; Part 1-7: Electrical test methods Velocity of propagation; Part 1-8: Electrical test methods Attenuation; Part 1-9: Electrical test methods Unbalance attenuation (longitudinal conversion loss, longitudinal conversion

19、transfer loss); Part 1-10: Electrical test methods Crosstalk; Part 1-11: Electrical test methods Characteristic impedance, input impedance, return loss; Part 1-12: Electrical test methods Inductance; Part 1-13: Electrical test methods Coupling attenuation or screening attenuation of patch cords / co

20、axial cable assemblies / pre-connectorised cables; Part 1-14: Electrical test methods Coupling attenuation or screening attenuation of connecting hardware; Part 1-15: Electromagnetic performance Coupling attenuation of links and channels (Laboratory conditions); Part 1-16: Electromagnetic performanc

21、e Coupling attenuation of cable assemblies (Field conditions); Part 1-17: Electrical test methods Exogenous Crosstalk ExNEXT and ExFEXT. BS EN 50289-1-1:2017EN 50289-1-1:2017 4 1 Scope This European Standard specifies the electrical test methods for cables used in analogue and digital communication

22、systems. Part 1 of EN 50289 consists of the following documents: Part 1-1 General requirements Part 1-2 DC resistance Part 1-3 Dielectric strength Part 1-4 Insulation resistance Part 1-5 Capacitance Part 1-6 Electromagnetic performance Part 1-7 Velocity of propagation Part 1-8 Attenuation Part 1-9 U

23、nbalance attenuation (longitudinal conversation loss, longitudinal conversion transfer loss) Part 1-10 Crosstalk Part 1-11 Characteristic impedance, input impedance, return loss Part 1-12 Inductance Part 1-13 Coupling attenuation or screening attenuation of patch cords / coaxial cable assemblies /pr

24、e-connectorised cables Part 1-14 Coupling attenuation or screening attenuation of connecting hardware Part 1-15 Coupling attenuation of links and channels (Laboratory conditions) Part 1-16 Coupling attenuation of cable assemblies (Field conditions) Part 1-17 Exogenous Crosstalk ExNEXT and ExFEXTFurt

25、her test details (e.g. temperature, duration) and/or test requirements are given in the relevant cable standard. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the

26、edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 50289-1-9, Communication cables - Specifications for test methods - Part 1-9: Electrical test methods - Unbalance attenuation (longitudinal conversion loss, longitudina

27、l conversion transfer loss) EN 50290-1-2, Communication cables - Part 1-2: Definitions EN 61169-16, Radio-frequency connectors - Part 16: Sectional specification - RF coaxial connectors with inner diameter of outer conductor 7 mm (0,276 in) with screw coupling - Characteristic impedance 50 ohms (75

28、ohms) (type N)(IEC61169-16) BS EN 50289-1-1:2017 EN 50289-1-1:2017 5 IEC 60169-15, Radio-frequency connectors Part 15: R.F. coaxial connectors with inner diameter of outer conductor 4.13 mm (0.163 in) with screw coupling Characteristic impedance 50 ohms (Type SMA) 3 Terms and definitions For the pur

29、poses of this document, the terms and definitions given in EN 50290-1-2 and the following apply. 3.1 single ended measurement with respect to a fixed potential, usually ground 3.2 mixed mode (parameter or measurement) parameters or measurements containing differential mode, common mode, and intermod

30、al S-matrices 3.3 intermodal (parameter or measurement) parameter or measurement that either sources on the common mode and measures on the differential mode or, sources on the differential mode and measures on the common mode 4 Sampling 4.1 Cable under test (CUT) Unless otherwise specified in the r

31、elevant test method, the length of CUT shall be selected to take into account the dynamic range of the measuring equipment and the frequency range specified to yield the required level of accuracy. The length shall be measured with better accuracy than 1 % unless otherwise stated in the relevant cab

32、le specification. 4.2 Pre-conditioning The CUT shall be pre-conditioned at a constant ambient temperature for such time as to allow the specimen temperature to stabilize according to 6.1. 5 Tests The tests required and performance characteristics applicable to each type of cable are given in the rel

33、evant cable standard. 6 Test conditions 6.1 Ambient temperature Tests shall be made at an ambient temperature within the range 15C to 35C unless otherwise specified. 6.2 Tolerance on temperature values Unless otherwise specified in the relevant specification, the tolerance on temperature shall be 2C

34、. 6.3 Frequency and waveform of test voltages for dielectric strength test Unless otherwise specified, the test voltage shall be in the frequency range 40 Hz to 62 Hz of approximately sine-wave form, the peak ratio value/r.m.s. value being equal to 2 with a tolerance of 7 %. The values given are r.m

35、.s. BS EN 50289-1-1:2017EN 50289-1-1:2017 6 6.4 Frequency range and stability for frequency related measurements The required frequency range is specified in the relevant sectional specification. The sweep shall be linear or logarithmic such that: fffn=stop startstep1for linear sweep and ( )nfKf=11s

36、topstart/for logarithmic sweep where fstartlowest specified frequency;fstophighest specified frequency;fsteplinear frequency increment, constant over the whole specified frequency range;n number of frequency points; K ratio of two successive frequency points at logarithmic sweep. The minimum number

37、of frequency points shall be chosen to point out frequency dependent cable characteristics. Unless otherwise specified the minimum number of frequency points shall be 200 points in the range 10 kHz 100 kHz, 200 points in the range 100 kHz 1 MHz, 200 points in the range 1 MHz 16 MHz, 400 points in th

38、e range 1 MHz 100 MHz, 800 points in the range 1 MHz 600 MHz, 1 000 points in the range 1 MHz 1 000 MHz, 1 600 points in the range 1 MHz 2 000 MHz. 6.5 Measurement on drums Unless otherwise specified or special cable-specific characteristics need to be taken into account, the cables shall be measure

39、d on drums or coils. 7 Measurement methods and equipment 7.1 Calibration The equipment calibration shall be considered as a part of the quality system. 7.2 Requirements for balanced to unbalanced converters (Baluns) Several classes of baluns with different performance levels are defined in order to

40、facilitate measurements in different frequency ranges with commercially available baluns as appropriate. The baluns may be balun transformers or 180 hybrids with attenuators to improve matching if needed (see Figure 1). BS EN 50289-1-1:2017 EN 50289-1-1:2017 7 Figure 1 180 hybrid used as a balun Bal

41、uns shall be RFI shielded and shall comply with the requirements given in Table 1. Depending on the frequency range different requirements are specified. For frequencies higher than 1 GHz balunless measurement technique is recommended (see clause 7.3). Generally, it is advantageous to choose a balun

42、 with the same common mode impedance as the cable under test. However, in practice this is hardly possible as it is unreasonable to provide separate measurements equipment for each cable type. Often the best performance for differential mode is achieved when the centre tap of the secondary winding o

43、f the balun is grounded; meaning the nominal common mode impedance is 25 . Then the results can directly be compared to results achieved by balunless measurement technique when 50 ports are used without mathematical impedance transformation of the latter results. In case of balance measurement where

44、 the centre tap of the secondary winding of the balun cannot be grounded, compare balance measurement results achieved with balun-based measurement technique to results achieved with balunless measurements technique the procedures described in EN 50289-1-9 shall be considered. Unless otherwise speci

45、fied the rules specifying the common mode termination for balance measurements according to EN 50289-1-9 shall be applied in case of doubt. The reference common mode impedance specified accordingly may be different to the reference common mode impedance of the cabling system the cable is intended to

46、 be used for. Table 1 Test balun performance characteristics Parameter Class A 250 1 to 250 MHz Class A 500 1 to 500 MHz Class A 1000 1 to 1 000 MHz Class A 2000 1 to 2 000 MHz Impedance, primarya50 unbalanced 50 unbalanced 50 unbalanced 50 unbalanced Impedance, secondary Matched balanced dMatched b

47、alanced dMatched balanced dMatched balanced dInsertion losse3 dB maximum 2 dB maximum 3 dB maximum 3 dB, 1-3 MHz 2 dB, 3-15 MHz 2 dB, 15-1 000 MHz 3 dB, 1 000-2 000 MHz Return loss secondary, minimum 20 dB 12 dB, 1-15 MHz 20 dB, 15-500 MHz 12 dB, 4-15 MHz 20 dB, 15-550 MHz 17,5 dB, 550-600 MHz 10 dB

48、, 600-1000 MHz 8 dB, 1-3 MHz 12 dB, 3-15 MHz 20 dB, 15-1 000 MHz 18 dB, 1 000-2 000 MHz BS EN 50289-1-1:2017EN 50289-1-1:2017 8 Return loss, common modeb, minimum 10 dB 15 dB, 1-15 MHz 20 dB, 15-400 MHz 15 dB, 400-500 MHz 15 dB, 4-15 MHz 20 dB, 15-400 MHz 15 dB, 400-600 MHz 10 dB, 600-1000 MHz 6 dB,

49、 1-3 MHz 10 dB, 3-500 MHz ffs., 500-2 000 MHz Power rating 0,1 Watt minimum 0,1 Watt minimum 0,1 Watt minimum 0,1 Watt minimum Longitudinal balancec, minimum 60 dB 60 dB, 1-100 MHz 50 dB, 100-500 MHz 60 dB, 4-350 MHz 50 dB, 350-600 MHz 40 dB, 600-1 000 MHz 60 dB, 1-100 MHz 50 dB, 100-500 MHz 42 dB, 500-1 000 MHz 34 dB, 1 000-2 000 MHz Output signal balancec, minimum 50 dB 50 dB 60 dB, 4-350 MHz 50 dB, 350-600 MHz 40 dB, 600