BS EN 61196-4-2004 Coaxial communication cables - Sectional specification for radiating cables《同轴通信电缆 辐射电缆分规范》.pdf

1、BRITISH STANDARD BS EN 61196-4:2004 Coaxial communication cables Part 4: Sectional specification for radiating cables The European Standard EN 61196-4:2004 has the status of a British Standard ICS 33.120.10 BS EN 61196-4:2004 This British Standard was published under the authority of the Standards P

2、olicy and Strategy Committee on 20 April 2004 BSI 20 April 2004 ISBN 0 580 43652 7 National foreword This British Standard is the official English language version of EN 61196-4:2004. It is identical with IEC 61196-4:2004. The UK participation in its preparation was entrusted by Technical Committee

3、EPL/46, Cables, wires and waveguides, R.F. connectors and accessories for communication and signalling, to Subcommittee EPL/46/1, Communication cables, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-referen

4、ces The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British S

5、tandards Online. 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 does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to

6、the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside

7、front cover, the EN title page, pages 2 to 17 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEAN STANDARD EN 61196-4 NORME EUROPENNE EUROPISCHE NORM March 2004 CENELEC E

8、uropean Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2004 CENELEC - All rights of exploitation in any form and by any means reserved worldwide

9、 for CENELEC members. Ref. No. EN 61196-4:2004 E ICS 33.120.10 English version Coaxial communication cables Part 4: Sectional specification for radiating cables (IEC 61196-4:2004) Cbles coaxiaux de communication Partie 4: Spcification intermdiaire pour cbles rayonnants (CEI 61196-4:2004) Koaxiale Ko

10、mmunikationskabel Teil 4: Rahmenspezifikation fr abstrahlende Kabel (IEC 61196-4:2004) This European Standard was approved by CENELEC on 2004-03-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the stat

11、us 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 Central Secretariat or to any CENELEC member. This European Standard exists in three official versions (English, French, German).

12、 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 same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, Czec

13、h Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EN 69116-:40024 - - 2 Foreword The text of document 46A/58

14、2/FDIS, future edition 2 of IEC 61196-4, prepared by SC 46A, Coaxial cables, of IEC TC 46, Cables, wires, waveguides, r.f. connectors, r.f. and microwave passive components and accessories, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 61196-4 on 2004-03-01. This s

15、tandard is to be used in conjunction with EN 61196-1. 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 by endorsement (dop) 2004-12-01 latest date by which the national standards conflicting with t

16、he EN have to be withdrawn (dow) 2007-03-01 Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 61196-4:2004 was approved by CENELEC as a European Standard without any modification. _ Page2 EN611964:2004 CONTENTS F 1 Scope.4 2 Normative references.4 3

17、Terms and definitions .5 4 Preferred ratings and characteristics 5 4.1 Classes.5 4.2 Characteristic impedance5 5 Marking5 6 Test and measurement procedures and conditions .5 6.1 Standard atmospheric conditions of testing .5 6.2 Methods of measurement5 6.3 Physical6 7 Information to be included in de

18、tail specification.6 8 Packaging6 Annex A (normative) Attenuation constant .7 A.1 Procedure 7 A.2 Measurement (see Figures A.1 and A.2).7 A.3 Evaluation 7 A.4 Requirement.8 Annex B (normative) Coupling loss 11 B.1 Procedure 11 B.2 Measurement (see Figures B.3 and B.4).12 B.3 Evaluation 12 B.4 Requir

19、ement.13 Annex C (normative) Procedures for quality matters 16 Annex ZA (normative) Normative references to international publications with their corresponding European publications 17 Figure A.1 Attenuation constant with ground-level method .9 Figure A.2 Attenuation constant with free-space method1

20、0 Figure B.1 Antenna orientations with ground-level method.11 Figure B.2 Antenna orientations with free-space method12 Figure B.3 Coupling loss with ground-level method14 Figure B.4 Coupling loss with free-space method.15 Page3 EN611964:2004 COAXIAL COMMUNICATION CABLES Part 4: Sectional specificati

21、on for radiating cables 1 Scope This part of IEC 61196 covers the requirements for flexible and semi-flexible radiating coaxial communication cables. It specifies preferred ratings and characteristics for radiating cables and enables selection of the appropriate tests and performance levels from the

22、 generic specification for inclusion in the detail specification. NOTE The coupling intensity between cable and mobile equipment depends on construction of the cable; orientation of antenna; distance of the mobile antenna from the cable; type of antenna; nature of ambient atmosphere; operating frequ

23、ency range; manner of installation of the cable; shape, material and size of surrounding buildings. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the late

24、st edition of the referenced document (including any amendments) applies. IEC 60068, Environmental testing IEC 60332 (all parts), Tests on electric cables under fire conditions IEC 60754 (all parts), Test on gases evolved during combustion of materials from cables IEC 61034 (all parts), Measurement

25、of smoke density of electric cables burning under defined conditions IEC 61196-1:1995, Radio-frequency cables Part 1: Generic specification General, definitions, requirements and test methods Amendment 1 (1999) Page4 EN611964:2004 3 Terms and definitions For the purposes of this document, the defini

26、tions given in IEC 61196-1 and the following apply. 3.1 radiating (coaxial) cables coaxial communication cables with outer conductors that are intentionally not completely closed, so that part of the energy transmitted or received through the cable is coupled by the transmission system formed by the

27、 outer conductor of the cable and the external environment NOTE Radiating cables can be used to create radio links between fixed stations connected to one end of the radiating cable and mobile stations which are within the transmitting/receiving range of the cable. They are preferred for use in tunn

28、els or other installations in which conventional radio transmission is not satisfactory or even impossible. 4 Preferred ratings and characteristics 4.1 Classes Radiating cables may be classed according to Iongitudinal loss; coupling loss; performance in fire. 4.2 Characteristic impedance The preferr

29、ed characteristic impedance of the radiating cables covered by this specification is 50 or 75 . 5 Marking The cable shall be permanently marked along its length. 6 Test and measurement procedures and conditions This clause gives test procedures and conditions generally used for radiating cables. Fur

30、ther requirements shall be given in the relevant detail specification. 6.1 Standard atmospheric conditions of testing Unless stated otherwise, the tests in IEC 60068 shall apply. 6.2 Methods of measurement 6.2.1 Electrical Withstand voltage of dielectric 11.5 of IEC 61196-1, Insulation resistance 11

31、.2 of IEC 61196-1, Conductor resistance 11.1 of IEC 61196-1, Page5 EN611964:2004 6.2.2 Transmission Mean characteristic impedance 11.8.1 of IEC 61196-1 1)Longitudinal loss Annex A 2)Coupling loss Annex B 2)Return loss 11.12 of IEC 61196-1 1)6.3 Physical 6.3.1 Cables with messenger Tensile strength (

32、messenger element) 6.3.2 Performance in fire Unless otherwise specified for a particular application the following shall apply: fire test according to IEC 60332 series or relevant parts as stated in the detail specification; corrosive emission, halogen content according to IEC 60754-1 and IEC 60754-

33、2; smoke test according to IEC 61034-1 and IEC 61034-2. 7 Information to be included in detail specification Cable constructional details. Cable outline drawing. Characteristics to be tested. Test procedures to be used. Requirements: attenuation constant versus frequency; coupling loss versus freque

34、ncy (a c50 , a c95 ) type of fire test. 8 Packaging Packaging requirements shall be left to the discretion of the manufacturer of the radio- frequency cable unless specific packaging requirements are incorporated in the contract or purchase order. _ 1)To prevent the influence on the test result of i

35、ntercoupling between layers and windings on a drum, it may be necessary to measure this characteristic on an uncoiled piece of cable (preferably as specified in Annexes A and B). 2)As they depend on the environmental conditions, coupling loss and longitudinal loss shall be measured with the same arr

36、angement, either ground level method or free space method. Page6 EN611964:2004 Annex A (normative) Attenuation constant A.1 Procedure Measurements can be carried out by one of the two methods: ground-level method; free-space method. A.1.1 Ground-level method The arrangement of the cable is given in

37、Figure A.1. The cable is laid on non-metallic spacers which gives the cable a distance from the concrete floor of 10 cm to 12 cm. The cable must be at least of the length 10 , where is the cable wavelength of the measuring frequency. A.1.2 Free-space method The arrangement of the cable is given in F

38、igure A.2. The cable is laid on non-metallic posts at a height of 1,5 m to 2 m. The cable must be at least of the length 10 , where is the cable wavelength of the measuring frequency. A.2 Measurement (see Figures A.1 and A.2) Adjust the generator frequency and record the output power level with a sp

39、ectrum analyser, a network analyser or equivalent. If the source is built into the measurement device, a cable of known attenuation can be used to connect the far end of the cable. Feed the signal to port A of the cable and record the power level at port B. The nominal characteristic impedance of th

40、e cable shall be matched to the nominal impedance of the test set-up. A.3 Evaluation Compute attenuation as 100 s e L N N = (A.1) where N eis the power level at cable input (dBm); N sis the power level at cable end (dBm); Page7 EN611964:2004 L is the length of the cable (m); is the attenuation const

41、ant (dB/100 m) NOTE Since resistive loss and coupling loss are both present, cannot be corrected for the temperature. A.4 Requirement The attenuation constant shall not be higher than the values specified in the detail specification. Page8 EN611964:2004 161-694 IE:C002 4 9 Signal generator Radiating

42、 cable Spectrum analyser or equivalent Trolley Non-metallic part, 10 cm height Concrete floor L (m) IEC 2883/03Figure A.1 Attenuation constant with ground-level method Page9 EN611964:2004 161-694 IE:C002 4 10 Non-metallic posts Concrete floor Signal generator Radiating cable Trolley Spectrum analyse

43、r or equivalent L (m) 2 m IEC 2884/03Figure A.2 Attenuation constant with free-space method Page10 EN611964:200469116-CEI 4:0240 11 Annex B (normative) Coupling loss B.1 Procedure Measurements can be carried out by one of the two methods: ground-level method; free-space method. B.1.1 Ground-level me

44、thod The arrangement of the cable is given in Figure B.1. The cable is laid on non-metallic spacers which give the cable a distance from the concrete floor of 10 cm to 12 cm. The cable must be at least of the length 10 , where is the cable wavelength of the measuring frequency. The antenna is fixed

45、to a trolley and moved along the cable, the centre of the antenna positioned vertically above the cable at a distance of about 2 m. Preferably a half-wavelength dipole shall be used. The type and gain of the antenna used shall be stated in the result. NOTE Additional distances may be added in the de

46、tail specification. The spatial orientation of the antenna shall be as specified in the detail specification. 2 3 4 1 IEC 2885/031 Cable 3 Orthogonal 2 Radial 4 Parallel Figure B.1 Antenna orientations with ground-level method B.1.2 Free-space method The arrangement of the cable is given in Figure B

47、.2. The cable is laid on non-metallic posts at a height of 1,5 m to 2 m. The cable must be at least of the length 10 , where is the cable wavelength of the measuring frequency. Page11 EN611964:200469116-CEI 4:0240 21 The antenna is put on a trolley and moved parallel to the cable. The height of the

48、antenna centre shall be the same as that of the cable and its horizontal distance from the cable shall be about 2 m (see note in B.1.1). Preferably a half-wavelength dipole shall be used. The type and gain of the antenna used shall be stated in the result. No other metallic parts than the cable and

49、the antenna shall be included within a cylinder of 2 m (min.) in diameter surrounding the axis of the cable and the centre of the antenna. The spatial orientation of the antenna shall be as specified in the detail specification. For basic antenna orientations for a dipole see Figure B.1 2 3 4 1 IEC 2886/031 Cable 3