1、BRITISH STANDARD CONFIRMED DECEMBER1992 BS9220:1971 Incorporating Amendment No. 1 Specification for Rigid waveguide tubing of assessed quality: Generic data and methods of test UDC 621.372.82BS9220:1971 This BritishStandard, having been approved by the Telecommunication Industry Standards Committee,
2、 was published under the authority ofthe Executive Board on 10March1971 BSI03-2000 The following BSI references relate to the work on this standard: Committee referencesTLE/6 andTLE/6/6 Draft for comment67/20462 ISBN 0 580 06268 6 Co-operating organizations The Telecommunication Industry Standards C
3、ommittee, under whose supervision this BritishStandard was prepared, consists of representatives from the following Government departments and scientific and industrial organizations: British Broadcasting Corporation British Electrical and Allied Manufacturers Association British Radio Equipment Man
4、ufacturers Association British Radio Valve Manufacturers Association* British Railways Board Cable and Wireless Ltd. Crown Agents for Oversea Governments and Administrations* Department of Employment and Productivity (H.M. Factory Inspectorate) Electrical Contractors Association (Incorporated) Elect
5、rical Research Association Electricity Council, the Central Electricity Generating Board and the Area Boards, in England andWales Electronic Engineering Association* Electronic Valve and Semiconductor Manufacturers Association* Institution of Electrical Engineers Institution of Electronic and Radio
6、Engineers Institution of Production Engineers Ministry of Defence Ministry of Defence, Army Department Ministry of Defence, Navy Department* Ministry of Technology Post Office* Radio and Electronic Component Manufacturers Federation* Relay Services Association of Great Britain Science Research Counc
7、il Radio and Space Research Station Scientific Instrument Manufacturers Association Society of British Aerospace Companies Telecommunication Engineering and Manufacturing Association* The Government departments and scientific and industrial organizations marked with an asterisk in the above list, to
8、gether with the following, were directly represented on the committees entrusted with the preparation of this BritishStandard: British Non-ferrous Metals Federation High Conductivity Copper Group Copper Development Association Electric Cable Makers Confederation Ministry of Public Building and Works
9、 Amendments issued since publication Amd. No. Date of issue Comments 4103 December 1982 Indicated by a sideline in the marginBS9220:1971 BSI 03-2000 i Contents Page Co-operating organizations Inside front cover Foreword iii Section 1. Principles and mandatory procedures 1.1 General matters 1 1.1.1 S
10、cope 1 1.1.2 Related documents 1 1.1.3 Terminology 1 1.1.4 Letter symbols, signs and abbreviations 1 1.1.5 Graphical symbols 1 1.1.6 Marking of the part and package 2 1.1.7 Eligibility for qualification approval 3 1.1.8 Structurally similar parts 3 1.1.9 Delayed delivery 3 1.1.10 Supplementary proce
11、dure for qualification approval 3 1.1.11 Certified test records (CTRs) 3 1.1.12 Standard ratings and characteristics 4 1.1.13 Unchecked parameters 4 1.1.14 Procedure to be followed in the event of failures at Group D inspection 4 1.1.15 Ordering information 4 1.1.16 Release prior to completion of Gr
12、oup B tests 4 1.1.17 Protection 4 1.2 Test procedures 4 1.2.1 Measurement conditions 4 1.2.2 Visual inspection 4 1.2.3 Dimensioning and gauging procedures 4 1.2.3.1 Dimensions 4 1.2.3.2 Eccentricity 4 1.2.3.3 Bow 4 1.2.3.4 Twist 4 1.2.3.5 Shape of cross section 4 1.2.3.6 Ellipticity (of circular wav
13、eguide) 4 1.2.4 Electrical test procedures 4 1.2.5 Mechanical test procedures 5 1.2.6 Environmental test procedures 5 1.2.7 Endurance test procedures 5 Section 2. Rules for the preparation of detail specifications 2.1 Basic information 5 2.1.1 Originator of the specification 5 2.1.2 Specification nu
14、mber 5 2.1.3 Description of the part and intended application 5 2.1.4 Outline drawing 5 2.1.5 Ratings (including limiting conditions of use) 5 2.1.6 Characteristics 5 2.1.7 Related documents 5 2.1.8 Additional information 5 2.1.9 Marking 6BS9220:1971 ii BSI 03-2000 Page 2.2 Inspection requirements 6
15、 2.2.1 Group A inspection 6 2.2.2 Group B inspection 6 2.2.3 Group C inspection 6 2.2.4 Group D inspection 6 2.3 Certified test records 6 2.3.1 General 6 2.3.2 Attributes information 6 2.3.3 Measurements information 6 Appendix A Example of certified test record 8 Appendix B Example of a detail speci
16、fication 11 Table 1A Dimensions for ordinary rectangular waveguide type R 15 Table 1B Dimensions for ordinary rectangular waveguide type R 16 Table 2 Surface roughness in micrometers and micro-inches 17 Table 3 Weight data for ordinary rectangular waveguide type R 18BS9220:1971 BSI 03-2000 iii Forew
17、ord This BritishStandard, which has been prepared under the authority of the Telecommunication Industry Standards Committee, is the generic specification for rigid waveguide tubing in the system of standards for electronic parts of assessed quality. This standard covers principles and mandatory proc
18、edures in Section1, and rules for the preparation of detail specifications in Section2. It takes account of IECPublication153, “Hollow metallic waveguides”. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their
19、 correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pagesi toiv, pages1to18 and a back cover. This standard has been updated (see copyright date) and may hav
20、e had amendments incorporated. This will be indicated in the amendment table on the inside front cover.iv blankBS9220:1971 BSI 03-2000 1 Section 1. Principles and mandatory procedures 1.1 General matters 1.1.1 Scope. This BritishStandard gives details of test requirements and other general informati
21、on relating to rigid waveguide tubing of assessed quality of the following types: 1) Ordinary rectangular waveguide. 2) Rectangular waveguide with circular outside cross section. 3) Medium flat waveguide. 4) Flat rectangular waveguide. 5) Circular waveguide. 6) Ridged waveguide. 7) Square waveguide.
22、 It is intended to be read in conjunction with BS9000 and with the relevant detail specifications which give the dimensions, ratings and test requirements for specific types. Rules governing the contents and presentation of the detail specifications, for use by BSI technical panels or parts manufact
23、urers, are given in Section2 and the appendices to this standard. 1.1.2 Related documents BS204, Glossary of terms used in telecommunication (including radio) and electronics. BS1134, Centre-line-average height method for the assessment of surface texture. BS1471, Wrought aluminium and aluminium all
24、oys for general engineering purposes. Drawn tube. BS1991, Letter symbols, signs and abbreviations. BS2870, Specification for rolled copper and copper alloys: sheet, strip and foil. BS2871, Schedule of copper and copper alloys. Tubes. BS3839, Oxygen-free, high-conductivity copper for electronic valve
25、s and semiconductor devices. BS3939, Graphical symbols for electrical power, telecommunications and electronics diagrams. BS4000, Sizes of paper and board. BS9000, General requirements for electronic parts of assessed quality. 1.1.3 Terminology. The terms and their definitions which are employed in
26、this generic specification and/or in the associated detail specifications shall, wherever possible, be in accordance with BS204. In addition to the terms in BS204 the following specific terms and their definitions are applicable to the family of parts covered by this generic specification. 1) Lot. T
27、he production quantity of any one size and material of rigid waveguide tubing which is processed at any one production run, subject to the quantity not comprising more than the production from seven consecutive days (including if necessary a break in production not exceeding two days). 2) Unit of pr
28、oduct. The finite length of rigid waveguide tubing presented for inspection. These lengths shall, where possible, be the stock lengths or shorter. 3) Eccentricity. The eccentricity of the inside to the outside cross section is defined as half the difference between the measured thickness of the oppo
29、site walls, at a given cross section. 4) Twist. (Not applicable to circular waveguide). The relative rotation of two external cross sections of a piece of waveguide about its longitudinal axis, the cross sections being normal to this axis and a specified distance apart. 5) Bow. The maximum deviation
30、 of the actual axis of waveguide from a straight line connecting two points on the axis separated by a specified length. 6) Ellipticity (Of circular waveguide). Ellipticity where, at a given cross section, D nom= the nominal inside diameter, D max= the largest measured inside dimension, D min= the s
31、mallest measured inside dimension. 7) Nominal wall thickness. Half the difference between nominal outside and inside dimensions in the original system of units. 1.1.4 Letter symbols, signs and abbreviations. Any letter, symbols, signs and abbreviations which are employed shall be in conformity with
32、BS1991 1)or shall be derived in accordance with the principles of that standard. 1.1.5 Graphical symbols. Any graphical symbols which are employed shall be in conformity with BS3939 2)or shall be derived in accordance with the principles of that standard. 1) BS1991, “Letter symbols, signs and abbrev
33、iations”. E D max D min D nom - =BS9220:1971 2 BSI 03-2000 1.1.6 Marking of the part and package 1.1.6.1 Marking. Each waveguide and its package shall be clearly and indelibly marked with the following information: 1) Type, size and material designation (see1.1.6.2). 2) Date code (including lot iden
34、tification, seeBS9000). 3) Manufacturers identification. The marking shall be made near one end of the length of waveguide. For small sizes where such marking is not practicable the marking shall be as prescribed in the relevant detail specification. The method of marking shall not be detrimental to
35、 the performance of the waveguide. 1.1.6.2 Type, size and material designation. Waveguides defined by this specification shall be designated by a code comprising the following information in the order shown: 1) The BS number of the detail specification. 2) A letter indicating the shape of the wavegu
36、ide cross section as follows: R = Rectangular (in which the ratio of width to height is substantially2:1). P = Rectangular with circular outside cross section. M = Medium flat (in which the ratio of width to height is substantially greater than4:1). F = Flat rectangular (in which the ratio of width
37、to height is in principle8.33:1). C = Circular. S = Single ridge (2.4bandwidth). Z = Single ridge (3.6bandwidth). D = Double ridge (2.4bandwidth). T = Double ridge (3.6bandwidth). 3) A code number for each size in accordance with those shown in the detail specifications. This number is indicative of
38、 the centre frequency (inunits of0.1GHz) of the waveguide. 4) A letter designating the material used (see1.1.12.1): Class1 materials. Class1 materials are aluminium or aluminium alloys containing not less than95% aluminium. The following materials are included in Class1: A = Aluminium conforming to
39、TIC of BS1471 3) . B = Aluminium alloy conforming to NT4 of BS1471. C = Aluminium alloy conforming to NT6 of BS1471. D = Aluminium alloy conforming to HT9 of BS1471. E = Aluminium alloy conforming to HT15 of BS1471. F = Aluminium alloy conforming to HT20 of BS1471. G = Aluminium alloy conforming to
40、HT30 of BS1471. Class2 materials. Class2 materials are copper-zinc alloys containing between1% and35% zinc. The following materials are included in Class2: H = Brass conforming to CZ101 of BS2870 4) . J = Brass conforming to CZ105 of BS2871 5) . Class3 materials. Class3 materials are copper with not
41、 more than1% of other materials. The following materials are included in Class3: K = Copper conforming to C101 or C102 of BS2871 5) . L = Copper conforming to C103 of BS2871. M = Copper conforming to C106 of BS2871. N = Copper conforming to BS3839 6) . Class4 materials. Class4 materials are silver o
42、r silver copper alloys containing not less than87% silver. The following material is included in Class4: S = Silver(92.5% silver7.5% copper). Other materials X = Other materials (composition to be specified in the detail specification). 2) BS3939, “Graphical symbols for electrical power, telecommuni
43、cations and electronics diagrams”. 3) BS1471, “Wrought aluminium and aluminium alloys for general engineering purposes. Drawn tube”. 4) BS2870, “Specification for rolled copper and copper alloys: sheet, strip and foil”. 5) BS2871, “Schedule of copper and copper alloys. Tubes”. 6) BS3839, “Oxygen-fre
44、e, high-conductivity copper for electronic valves and semiconductor devices”.BS9220:1971 BSI 03-2000 3 5) A letter designating the heat treatment used as follows: M = Without heat treatment. O = Annealed. S = Stress relieved. Additional code letters designating heat treatment used, to be in accordan
45、ce with BS1471 7) . Example: BS9220NXXXR100AM denotes a rectangular waveguide of approximate centre frequency of10GHz and of internal dimensions22.860mm 10.160mm (0.900in 0.400in) with normal tolerances, made from aluminium with the composition specified in TIC of BS1471, without subsequent heat tre
46、atment. 1.1.7 Eligibility for qualification approval. The first stage of processing in accordance with2.3.2(3) of BS9000 8)is: the process of obtaining the final dimensions of cross section for the appropriate type and size of waveguide tubing. 1.1.8 Structurally similar parts. For qualification app
47、roval and for tests in Group D, waveguide tubes within specified ranges of sizes, and made from material of the same class, shall be considered as being structurally similar for inspection purposes. The details shall be as prescribed in the detail specification. 1.1.9 Delayed delivery. Following man
48、ufacturers acceptance inspection, parts held for a period exceeding two years shall be reinspected prior to release for the Group A inspection as defined in this specification. 1.1.10 Supplementary procedure for qualification approval 1.1.10.1 Lot acceptance tests (Group A). Lot acceptance tests sha
49、ll be the Group A inspection as stated in the detail specification. The recommended measurements and sample sizes are given below. In the event of any defect being detected during the lot acceptance tests, the entire lot shall be inspected for the defective parameters and any waveguides which fail to comply with the specification shall not be accepted for release. 1.1.10.2 Qualification approval tests. Unless otherwise specified in the detail specification the supplier shall submit for inspection, as arranged with the Su
