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1、BRITISH STANDARD BS 9032:1975 Rules for the preparation of Detail specifications for Pulsed magnetrons (excluding frequency-agile magnetrons) of assessed quality Basic assessment level Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 02:29:23 GMT+00:00 2006, Unco
2、ntrolled Copy, (c) BSI BS 9032:1975 BSI 02-2000 ISBN 0 580 34367 7 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 Standard does not of itself confer immunit
3、y from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages 1 to 9 and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the i
4、nside front cover. Amendments issued since publication Amd. No.DateComments Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 02:29:23 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 9032:1975 BSI 02-2000i Contents Page 1Introduction1 2Scope1 3General1 Licensed Copy
5、: London South Bank University, London South Bank University, Fri Dec 08 02:29:23 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii blank Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 02:29:23 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 9032:1975 BSI 02-20001 1
6、Introduction This British Standard shall be used in conjuction with BS 9030, “Magnetrons of assessed quality: generic data and methods of test”. The object of the rules in this standard is to ensure that all detail specifications for pulsed magnetrons are closely similar to enable them to be readily
7、 compared. 2 Scope This standard lists the ratings, characteristics, inspection requirements and additional information for pulsed magnetrons (excluding frequency-agile magnetrons) at the basic assessment level, which shall be included as minimum mandatory requirements in the detail specification, t
8、ogether with supplementary tests which may be called up at the discretion of the specification writer to meet particular circumstances. The purpose of a detail specification is to describe fully a particular component so that the specification can be used contractually for procurement of that compon
9、ent, for acceptance testing and for circuit design and equipment maintenance purposes. 3 General Detail specifications are prepared either by BSI or by manufacturers. They shall be prepared in accordance with the rules given in 3.1, 3.2, 3.3 and 3.4. The minimum information which is to be given in a
10、 detail specification for a pulsed magnetron is given in the mandatory layout of this standard. All detail specifications shall be printed on A4 size paper. 3.1 Basic information. The information given in 3.1.1 to 3.1.9 shall appear on page 3 of the detail specification, as far as is practicable. Th
11、is information is not for inspection purposes; inspection requirements are given in 3.2. 3.1.1 Originator of the specification. Each detail specification shall give the name and address of the originator of the specification. 3.1.2 Numbering of the detail specification. Each detail specification sha
12、ll carry a distinguishing number made up of the number of this standard followed by a three-digit number to designate the particular detail specification. Where the detail specifications have been prepared by BSI the two portions of the distinguishing number shall be separated by the letter “N”, e.g
13、. BS 9032 NXXX. When the detail specification has been prepared by a manufacturer BSI will issue an “EP” number, e.g. EP 9032 FXXX which shall be used until such time as the qualification approval test report has been received by BSI, who will then issue a BS number which will be separated by the le
14、tter “F”, e.g. BS 9032 FXXX, to show that the detail specification has been prepared by a manufacturer. The issue number and date of issue (month and year) of the detail specification shall be given and re-issues shall give the issue number and date of issue of the superseded document, all changes b
15、eing clearly marked. 3.1.3 Description of the tube and intended application. This shall be as shown on page 3 of the mandatory layout for a detail specification. 3.1.4 Outline drawing (not for inspection purposes). An illustration of the magnetron showing the overall dimensions shall be given as an
16、aid to easy recognition and for comparison of the component with other components. Terminal connections shall be given as appropriate. The symbols used shall be in accordance with the relevant British Standards or IEC publications. The location of the inspection drawings (see 3.3) shall be given. 3.
17、1.5 Ratings (not for inspection purposes). Any limiting conditions of use, e.g. mounting, shall be stated. The absolute system of ratings shall be used (see IEC publication 134). The ratings listed on page 3 of the mandatory layout shall be stated. Additional ratings may be included at the manufactu
18、rers discretion but in all cases the values of the ratings and the conditions under which the ratings apply shall be given. Any interdependence of the ratings shall be given. 3.1.5.1 Ratings (limiting values). These are defined as ratings which establish either a limiting capability or a limiting co
19、ndition of use beyond which significant performance deterioration, life reduction and/or possible damage to the device may occur. NOTEThe limiting value may be either a maximum or a minimum quantity and is referred to as a “maximum rating” or a “minimum rating” respectively. Such values do not neces
20、sarily define a frontier where one side gives satisfactory performance and the other immediate failure. Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 02:29:23 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 9032:1975 2 BSI 02-2000 3.1.6 Characteristics (not for
21、inspection purposes). The characteristics to be stated are shown in the mandatory layout given in this standard. Additional characteristics may be included at the manufacturers discretion but in all cases the conditions under which the characteristics are measured shall be stated. 3.1.7 Related docu
22、ments. Reference shall be made to BS 9000, “General requirements for electronic components of assessed quality”, BS 9030, “Magnetrons of assessed quality: generic data and methods of test” and to any other British Standards or IEC publications which are called up in the detail specification but not
23、already referenced in BS 9030. 3.1.8 Additional information. This part of the detail specification shall include any circuit diagrams, graphs and notes necessary to clarify any part of the detail specification. Also where any items such as those listed below are not fully defined in BS 9030 (and/or
24、BS 9000 in some cases) additional details covering those items shall be given in the detail specification. a) Terms and definitions. b) Letter symbols. c) Test procedures. The general principles contained in the relevant British Standards and/or IEC publications shall be followed when preparing such
25、 additional information. 3.1.8.1 Application data. The application data shall be that which, in the view of the manufacturer, will provide adequate information. This information shall be given on a voluntary basis and is not a mandatory requirement in the sense of forming part of the inspection proc
26、edure to meet the needs of the detail specification. 3.1.9 Ordering information. The minimum ordering information required for components covered by the detail specification shall be given as shown in the mandatory layout. 3.2 Inspection requirements. The requirements of 2.2 of BS 9000-2:1972 shall
27、apply. 3.3 Inspection drawing. A drawing of the magnetron (or range of magnetrons) shall be given for inspection purposes together with a statement of the projection used. A table of dimensions with tolerances shall be given, sub-divided to show the dimensions which are appropriate for group A, C or
28、 D inspection. In addition, the finished surfaces which are to be inspected in group D shall be indicated. Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 02:29:23 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 9032:1975 BSI 02-20003 MANDATORY LAYOUT AND CONTENT
29、FOR A DETAIL SPECIFICATION 1 Ratings (not for inspection purposes) Ratings are limiting values and absolute (in accordance with IEC 134). ELECTRONIC COMPONENTS OF ASSESSED QUALITY: DETAIL SPECIFICATION IN ACCORDANCE WITH BS 9030 Outline and dimensions (not for inspection) PULSED MAGNETRON (FIXED-FRE
30、QUENCY OR TUNABLEa) Outline drawing to show overall dimensionsBASIC ASSESSMENT LEVEL MANUFACTURERS TYPE DESIGNATION NUMBERa Detail drawing for inspection purposes see pagea Brief description to include the following: Frequency banda Type of connectionsa Packaged or non-packageda Intended application
31、a Constructionab For ordering information see pagea a To be completed by the specification writer. b To be included at the specification writers discretion. SymbolMin.Max.Units Electrical Heater voltage (starting)Vh aa V Heater voltage (operating)Vh aa V bHeater surge current for ams max. Ihsurge a
32、A Cathode preheating timetk a s Pulse currentIa pk aa A Rate of rise voltagerrv aa kV/4s Duty factordu a V.S.W.R. of r.f. load a Pulse durationtP aa s Environmental Ambient storage temperature range aa C Ambient operating temperature range aa C Reference point temperature a bAmbient air pressurea bC
33、ontinuous vibration over frequency range aHz to aHza m/s2 bShort duration shock (awaveform)a m/s2 a To be completed by the specification writer. b To be included at the specification writers discretion. Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 02:29:23 GM
34、T+00:00 2006, Uncontrolled Copy, (c) BSI BS 9032:1975 4 BSI 02-2000 2 Characteristics measured at stated conditions 3 Marking The marking of the component and packing shall be in accordance with the requirements of 1.6 of BS 9030. 4 Related documents Reference shall be made to the generic specificat
35、ion BS 9030 and to any other relevant British Standards of IEC publications which are directly called up in the detail specification. 5 Additional information The inclusion of additional data is not mandatory, but the manufacturer may at his discretion give information such as: Any requirements of a
36、 precautionary nature. Stray r.f. radiation. Magnetic field strength and configuration (non-packaged types only). Magnetic field leakage (packaged types only). Maximum mass (including magnet if integral with tube). Special storage conditions. Cooling requirements. Mounting requirements. Any special
37、setting-up or switching requirements. The following should appear in detail specifications for non-packaged types as precaution to be observed by users: NOTE TO USERFor non-packaged types, the prescribed values of magnetic field must be maintained when the magnetron is installed in the equipment. 6
38、Ordering information Orders for this pulsed magnetron shall contain the following information: a) The number, issue and date of the detail specification. b) The type designation number. The order should contain details of any special requirements. Frequency (fixed or tuning rangea)f aa GHz Pulse vol
39、tageVapk baa kV Frequency pulling figure under stated conditions%f a MHz Pulse output powerPopk a kW bFrequency pushing figure over current range amA to amA %f a MHz/A bHeater voltage reduction scheme bSpectrum widtha dB bCharacteristics curves a) Reicke diagram b) Power output/mean current c) Perfo
40、rmance chart a To be completed by the specification writer. b To be included at the specification writers discretion. Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 02:29:23 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 9032:1975 BSI 02-20005 7 Inspection requi
41、rements If preferred by the specification writer, general test conditions may be shown in tabular form at the beginning of this section thus: If this method is adopted, the conditions of test column will give the appropriate number test condition and any change or addition appropriate to that partic
42、ular examination or test. In addition, the specification writer may include the following general test conditions at his discretion: a) Any requirements for a reduction in heater power. b) Tolerances on the values of the parameters. c) Minimum flow rates of coolant. d) Minimum waveguide pressure. e)
43、 For non-packaged types only, the magnetic field (1) at a stated reference point on the axis of the magnet gap and (2) at each of four points equally spaced on the circumference of each of two circles of equal diameter concentric with the axis of the magnet gap in planes perpendicular to the axis; t
44、hese planes to be spaced either from the stated reference point or from the adjacent pole faces, as is most convenient, by stated distances. If the information is given the following note should be included in the detail specification. NOTECare should be taken to ensure that the area of the magnetic
45、 field measuring probe is small enough so that the field does not vary substantially over the area of the probe. This is usually achieved when the probe diameter is less than 15 % of the spacing between the pole pieces or of the diameter of the concentric circles, whichever is the less. General test
46、 conditions Parameters Test condition 1 to n Magnetic field (for unpackaged magnetrons) Heater voltage Anode mean current Rate of rise of voltage pulse Duty factor Pulse duration V.S.W.R. of r.f. load * * * * * * * * * * * * * * Licensed Copy: London South Bank University, London South Bank Universi
47、ty, Fri Dec 08 02:29:23 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 9032:1975 6 BSI 02-2000 InspectionBS 9030: reference and conditions of test Limits Unit min.max. GROUP ASubgroups A1, A3, A4 and A5 not applicable Subgroup A0Inspection level 100 % Visual inspection2.2No voltages Holding2.6.724 h
48、following completion of pumping. No voltages Post holding period tests: Mean r.f. output power 1005Magnetic field (for unpackaged magnetrons) aba W Heater voltage V Anode mean current A Rate of rise of voltage pulsekV/4s Pulse duration s Duty factor Load v.s.w.r. FrequencyGHz (for tunable magnetrons
49、) Frequency (for fixed frequency magnetrons) 1015Magnetic field (for unpackaged magnetrons) aaGHz Heater voltage. V Anode mean current . A Rate of rise of voltage pulse.kV/4s Pulse duration. s Duty factor. Load v.s.w.r Frequency tuning range (for tunable magnetrons) 1022(1)Magnetic field (for unpackaged magnetrons) aaGHz Heater voltage . V Anode mean current . A Rate of rise of voltage pulse .kV/4s Pulse duration . 4s Duty factor . Load v.s.w.r. . Output power .kW min. a To be completed by the specification writer. b To be included at the specification writers discre
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