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1、BRITISH STANDARD BS EN 61196-2:1997 IEC 1196-2: 1993 Radio-frequency cables Specifications Part 2: Semi-rigid radio-frequency and coaxial cables with polytetrafluoroethylene (PTFE) insulation Sectional specification The European Standard EN 61196-2:1995 has the status of a British Standard ICS 33.12
2、0.10 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 11 09:51:43 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 61196-2:1997 This British Standard, having been prepared under the direction of the Electrotechnical Sector Board, was published under the authority of the Standards Board and comes
3、into effect on 15 September 1997 BSI 09-1999 ISBN 0 580 27480 2 National foreword This British Standard is the English language version of EN 61196-2:1995. It is identical with IEC 1196-2:1993. The UK participation in its preparation was entrusted by Technical Committee EPL/46, Cables, wires and wav
4、eguides, R.F. connectors, and accessories for communication and signalling, to Subcommittee EPL/46/1, Communication cables, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or propo
5、sals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references Attention is drawn to the fact that Annex
6、 ZA lists normative references to international publications with their corresponding European publications. The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International
7、 Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British
8、Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 20 and a back cover. This standard has been updated (see copyright date) and may have had amendments incorp
9、orated. This will be indicated in the amendment table on the inside front cover. Amendments issued since publication Amd. No.DateComments Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 11 09:51:43 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 61196-2:1997 BSI 09-1999i Contents Page National
10、forewordInside front cover Foreword2 Text of EN 61196-23 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 11 09:51:43 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii blank Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 11 09:51:43 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NO
11、RME EUROPENNE EUROPISCHE NORM EN 61196-2 March 1995 ICS 33.120.10 Descriptors: Semi-rigid coaxial cables, PTFE insualtion English version Radio-frequency cables Specifications Part 2: Semi-rigid radio-frequency and coaxial cables with polytetrafluoroethylene (PTFE) insulation Sectional specification
12、 (IEC 1196-2:1993) Cbles pour frquences radiolectriques Spcifications Partie 2: Cbles coaxiaux et semi-rigides pour frquences radiolectriques isolation polyttrafluorothylne Spcification intermdiaire (CEI 1196-2:1993) Spezifikationen fr Hochfrequenzkabel Teil 2: Halb-starre Hochfrequenz- und Koaxialk
13、abel mit Polytetrafluorethylen- (PTFE) Isolation Rahmenspezifikation (IEC 1196-2:1993) This European Standard was approved by CENELEC on 1995-03-06. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the stat
14、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).
15、 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, Denmark, Fin
16、land, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische N
17、ormung Central Secretariat: rue de Stassart 35, B-1050 Brussels 1995 Copyright reserved to CENELEC members Ref. No. EN 61196-2:1995 E Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 11 09:51:43 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 61196-2:1995 BSI 09-1999 2 Foreword The text of the Inte
18、rnational Standard IEC 1196-2:1993, prepared by SC 46A, Coaxial cables, of IEC TC 46, Cables, wires, waveguides, R.F. connectors, and accessories for communication and signalling, was submitted to the formal vote and was approved by CENELEC as EN 61196-2 on 1995-03-06 without any modification. The f
19、ollowing dates were fixed: Annexes designated “normative” are part of the body of the standard. Annexes designated “informative” are given for information only. In this standard, Annex ZA is normative and Annex A is informative. Annex ZA has been added by CENELEC. Endorsement notice The text of the
20、International Standard IEC 1196-2:1993 was approved by CENELEC as a European Standard without any modification. Contents Page Foreword2 Section 1. General 1.1Scope and object3 1.2Normative references3 1.3Definitions3 1.4Information to be given in a detail specification3 1.4.1Outline drawing and dime
21、nsions3 1.4.2Materials3 1.4.3Ratings and characteristics3 1.4.4Marking of package3 Section 2. Ratings and characteristics 2.1Climatic category3 2.2Recommended ratings4 Page 2.2.1 Characteristic impedance4 2.2.2Tolerance on characteristic impedance4 2.2.3Rated temperature4 Section 3. Additional requi
22、rements 3.1Design and construction of outer conductor4 3.2Tests and measurements4 3.2.1Dimensions4 3.2.2Electrical tests4 3.2.3Mechanical and climatic tests5 Section 4. Quality assessment procedures 4.1Primary stage of manufacture7 4.2Structurally similar cables7 4.3Qualification approval7 Annex A (
23、informative) Examples of detail specifications8 Annex ZA (normative) Other international publications quoted in this Standard with references of the relevant European publications20 Figure 1 Block diagram of structural return loss test measuring equipment5 Figure A.1 Curves of maximum attenuation an
24、d power10 Figure A.2 Minimum structural return loss11 Figure A.3 Curves of maximum attenuation and power14 Figure A.4 Minimum structural return loss15 Figure A.5 Curves of maximum attenuation and power18 Figure A.6 Minimum structural return loss19 Table 1 Test schedule for qualification approval7 la
25、test date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement(dop) 1996-03-01 latest date by which the national standards conflicting with the EN have to be withdrawn(dow) 1996-03-01 Licensed Copy: sheffieldun sheffieldun, na, Sa
26、t Nov 11 09:51:43 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 61196-2:1995 BSI 09-19993 Section 1. General 1.1 Scope and object This sectional specification specifies requirements for semi-rigid radio frequency and coaxial cables with polytetrafluoroethylene (PTFE) insulation. It is intended to be
27、 used with the generic specification1). The object of this sectional specification is to prescribe recommended ratings and characteristics and to select from the generic specification the appropriate quality assessment procedures, test and measuring methods, and to give general performance requireme
28、nts for semi-rigid coaxial cables plus complementary test methods. Test severities and requirements prescribed in detail specifications referring to in this sectional specification should be of equal or higher performance levels. 1.2 Normative references The following normative documents contain pro
29、visions which, through reference in this text, constitute provisions of this sectional specification. At the time of publication, the editions indicated were valid. All normative documents are subject to revision, and parties to agreements based on this sectional specification are encouraged to inve
30、stigate the possibility of applying the most recent editions of the normative documents indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. IEC 28:1925, International Standard of resistance for copper. IEC 68-2-20:1979, Environmental testing Part 2:
31、 Tests Test T: Soldering. IEC 1196-X:199X, Radio-frequency cables specifications Part X (under consideration)1). 1.3 Definitions For the definitions of general terms used in this specification, reference should be made to the generic specification. 1.4 Information to be given in a detail specificati
32、on Detail specifications shall not specify requirements inferior to those in the generic or sectional specification. When more severe requirements are included, they shall be listed in the detail specification and indicated in the test schedules. Information covered in 1.4.1 to 1.4.4 shall be includ
33、ed in the detail specification and the value quoted shall be selected from the preferred values given in this sectional specification. Examples of detail specifications are given in Annex A. 1.4.1 Outline drawing and dimensions There shall be an illustration of the cable as an aid to easy recognitio
34、n and for comparison of the cable to others. As a minimum requirement, the diameter of the dielectric and the outer diameter of the cable shall be specified. All dimensions and their tolerances which affect interchangeability and termination shall be given in millimetres and tabulated below the draw
35、ing. 1.4.2 Materials The detail specification shall specify the materials of both the inner and outer conductors. The insulation shall be of solid polytetrafluoroethylene having a thickness as specified in the detail specification. 1.4.3 Ratings and characteristics The ratings and characteristics sh
36、all be in accordance with the relevant clauses of this specification. 1.4.4 Marking of package The package containing the cable shall be clearly marked with the manufacturers name and the cable IEC type designation. Section 2. Ratings and characteristics The values given in the detail specification
37、shall be selected from the following recommended requirements. 2.1 Climatic category Due to the particular structure of semi-rigid coaxial cables and the associated differential thermal expansion coefficients of materials, rated temperatures are specific for each cable and shall be given in the deta
38、il specification. The operating temperature range is between the limits within which a cable may be operated continuously without any reduction in the basic properties of the cable. This includes the ambient temperature plus the increased temperature due to cable operation. 1) Currently documents 46
39、A(CO)139 (in preparation) and 46A(CO)159 (under consideration). Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 11 09:51:43 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 61196-2:1995 4 BSI 09-1999 The temperature range is given as a guideline, since the mechanical, environmental and electrical r
40、equirements of the application can affect the operating temperature range. In no case shall the testing temperatures be considered as giving the operating temperature range. Testing is usually carried out under accelerated conditions in an attempt to reveal any faults in the materials used in the co
41、nstruction of the cable assembly. The maximum power-handling capability, in watts, is the amount of power that a coaxial cable can safely transmit without overheating or developing a dielectric breakdown throughout the usable frequency range. The safe power-handling capabilities are shown on the ass
42、ociated curves. These curves have been derated with an assumption of a VSWR of 2 and an ambient temperature of 25 C. The curves have also taken into account the effects of a typical system installation, e.g. bends, clamps and thermally insulated sections. 2.2 Recommended ratings 2.2.1 Characteristic
43、 impedance Preferred values are 50 7. or 75 7. 2.2.2 Tolerance on characteristic impedance Tolerances on rated characteristic impedances shall be selected from the following values: 0,5 7, 1 7, 1,5 7, 2 7 2.2.3 Rated temperature The standard value of rated temperature is 20 C. Section 3. Additional
44、requirements 3.1 Design and construction of outer conductor The outer conductor shall be a smooth and continuous metallic tube, either of copper or light metal alloy. Copper The type used shall be annealed, electrolytically refined with a copper content of at least 99,9 % and an electrical conductiv
45、ity of at least 100 % according to IEC 28. The mechanical characteristics of the copper tube shall comply with a flattening and bending test which is carried out on a section of tube. The tube shall be completely flattened and then folded back on itself. After this test the tube shall not exhibit sp
46、lits, cracks, fissures or tears. Light metal alloy Under consideration. 3.2 Tests and measurements 3.2.1 Dimensions 3.2.1.1 Eccentricity of dielectric The eccentricity of the dielectric shall be measured in accordance with the method specified in 4.22) of the generic specification. 3.2.1.1.1 Require
47、ments The lowest measured value of the dielectric core thickness shall be at least 85 % of the highest measured value in the same cross-section. 3.2.2 Electrical tests 3.2.2.1 Structural return loss 3.2.2.1.1 Procedure The specimen shall be of sufficient length to exhibit no more than 26 dB attenuat
48、ion at the highest swept-frequency and no less than 3 dB attenuation at the lowest swept-frequency specified. If the specified frequency range is such that one specimen cannot fulfil this requirement, then an additional specimen shall be used. A swept-frequency, slotted-line technique shall be used
49、to determine the structural return loss within the specified frequency range. Suitable connectors shall be attached to both ends of the specimen and the assembly checked with a TDR that is capable of producing a step-function rise-time of 150 ps or less. With the far end of the specimen connected to a matched load, the impedance variation exhibited by each connector-cable interface shall not be greater than the maximum impedance variation permitted for the cable itself. Correction curves will be used for othe