1、BRITISH STANDARD BS 5942-1: 1980 IEC 581-1: 1977 High fidelity audio equipment and systems; minimum performance requirements Part 1: Specification for general requirements UDC 621.396 + 681.84 187.4BS5942-1:1980 This British Standard, having been prepared under the directionof the Electronic Equipme
2、nt Standards Committeewas published underthe authority of the Executive Board and comes intoeffect on 30September1980 BSI 12-1999 The following BSI references relate to the work on this standard: Committee reference EEL/24 Draft for comment 71/24249 DC ISBN 0 580 11501 1 Cooperating organizations Th
3、e Electronic Equipment Standards Committee, under whose direction this British Standard was prepared, consists of representatives from the following Government department and scientific and industrial organizations: British Broadcasting Corporation* British Electrical and Allied Manufacturers Associ
4、ation (BEAMA) British Radio Equipment Manufacturers Association* Cable and Wireless Limited Cable Television Association of Great Britain Electrical, Electronic, Telecommunications and Plumbing Union Electricity Supply Industry in England and Wales Electronic Components Industry Federation* Electron
5、ic Engineering Association Institution of Electronic and Radio Engineers* Ministry of Defence Post Office* Post Office Engineering Union Scientific Instrument Manufacturers Association* The organizations marked with an asterisk in the above list, together with the following, were directly represente
6、d on the committee entrusted with the preparation of this British Standard: Association of Professional Recording Studios Limited Association of Sound and Communications Engineers Limited Audio Engineering Society British Kinematograph, Sound and Television Society Consumers Association European Tap
7、e Industry Association Federation of British Audio Independent Television Companies Association Radio Electrical and Television Retailers Association Royal Institute of British Architects Royal National Institute for the Deaf Telecommunication Engineering and Manufacturing Association (TEMA) Amendme
8、nts issued since publication Amd. No. Date of issue CommentsBS5942-1:1980 BSI 12-1999 i Contents Page Cooperating organizations Inside front cover National foreword ii 1 Scope and object 1 2 General conditions of measurement 1 3 Interconnection 1 4 Safety requirements 1 5 Published data 1 Publicatio
9、ns referred to Inside back coverBS5942-1:1980 ii BSI 12-1999 National foreword This British Standard, published under the direction of the Electronic Equipment Standards Committee, is identical with IEC Publication 581-1 “High fidelity audio equipment and systems; minimum performance requirements Pa
10、rt1,General” published in1977by the International Electrotechnical Commission (IEC). This is Part 1 of a multipart standard and it will be published simultaneously with Part 3 and Part 6. Other Parts under consideration are listed in clause1. Terminology and conventions. The text of the Internationa
11、l Standard has been approved as suitable for publication, without deviation, as a British Standard. Some terminology and certain conventions are not identical with those used in British Standards. The technical committee has reviewed the provisions of IEC 65:1979, IEC 98:1964 and IEC 268-14A:1973 an
12、d has decided that they are acceptable for use in conjunction with this standard. The British Standards related to IEC65 and IEC98 are BS415 “Specification for safety requirements for mains-operated electronic and related apparatus for household and similar general use” and BS1928 “Processed disk re
13、cords and reproducing equipment” respectively. NOTEThe note to 5.2 contains a requirement and therefore, for the purposes of this British Standard, it should be read as part of the main text. Cross-references International Standard Corresponding British Standard IEC 68-1:1968 BS 2011 Basic environme
14、ntal testing procedures Part 1.1:1977 General (Identical) IEC 94:1968 BS 1568 Magnetic tape recording equipment Part 1:1970 Magnetic tape recording and reproducing systems, dimensions and characteristics (Technically equivalent) IEC 94A:1972 Part 2:1973 Cassettes for commercial tape records and dome
15、stic use, dimensions and characteristics (Technically equivalent) IEC 98A:1972 BS 4852 Methods of defining and measuring the characteristics of disk record playing equipment Part 1:1972 Disk record players (Technically equivalent) IEC 268-15:1978 BS 5428 Methods for specifying and measuring the char
16、acteristics of sound system equipment Part 10:1979 Preferred matching values for the interconnection of sound system components (Identical) IEC 315-1:1970 BS 4054 Methods of measuring and expressing the performance of radio receivers for sound broadcasting Part 1:1980 General conditions (Identical)
17、IEC 386:1972 BS 4847:1972 Method of measurement of speed fluctuation in sound recording and reproducing equipment (Technically equivalent)BS5942-1:1980 BSI 12-1999 iii A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsibl
18、e for their 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, pages i to iv, pages1and 2, an inside back cover and a back cover. This standard has been upda
19、ted (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.iv blankBS5942-1:1980 BSI 12-1999 1 1 Scope and object The standard applies equally to monophonic, stereophonic and multichannel equipment and systems. The compl
20、ete standard consists of the following parts in which the requirements for the individual units of a system are given: Part 1: General; Part 2: Radio tuner units; Part 3: Record playing equipment and cartridges; Part 4: Magnetic recording and play-back equipment; Part 5: Microphones; Part 6: Amplifi
21、ers; Part 7: Loudspeakers; Part 8: Combination equipment 1) ; Part 9: Magnetic tapes for audio recording; Part 10: Headphones. The object of this standard is to prescribe the required minimum values of the characteristics of audio equipment and systems for high quality reproduction which are designe
22、d for household use. 2 General conditions of measurement 2.1 Methods of measurement Measurements shall be made in accordance withmethods of measurement stated in the relevant IECpublications referred to in eachpartofthe standard. These include IECPublications 65,94, 94A,98,98A,268,315 and386; the ti
23、tles of these publications are to be found in the Preface. 2.2 Supply voltage and frequency The measurements shall be made at a supply voltage within 1% of the rated value and at a supply frequency within1% of the rated value, unless otherwise stated in the relevant part of this standard. 2.3 Atmosp
24、heric conditions This equipment, which is used in living-rooms, shall comply with the specification over the following range of atmospheric conditions as given in IECPublication68-1, Basic Environmental Testing Procedures, Part 1: General (see Sub-clause5.3, Standard atmospheric conditions for testi
25、ng), unless otherwise stated in the relevant part of this standard. 3 Interconnection The individual units in a system shall fulfil the requirements for interconnections as given inIECPublication268-14A (mechanical), IECPublication268-15(electrical) (in preparation) and in the relevant part of IEC P
26、ublication130, unless otherwise stated in the relevant part of this standard. 4 Safety requirements The equipment shall comply with the safety requirements of IEC Publication65, Safety Requirements for Mains Operated Electronic and Related Apparatus for Household and Similar General Use. 5 Published
27、 data 5.1 If a unit has more than one mode of operation (e.g.different speeds on a tape recorder) and the unit does not comply with the requirements of this standard for all of these modes, this must be clearly stated in the user instruction book and in any published technical specification. In a co
28、mbination equipment, each function shall comply with the relevant requirements of this standard, but not necessarily for each mode of operation. 1) A combination equipment is a set of two or more individual units intended by the manufacturer to be used together and marketed by him as such. For examp
29、le, a set might consist of a tuner-amplifier, a pair of loudspeakers and a record playing equipment. Ambient temperature: 15 C to 35 C Relative humidity: 45% to 75% Atmospheric pressure: 860 mbar to 1060 mbarBS5942-1:1980 2 BSI 12-1999 5.2 All those characteristics which are given in the relevant pa
30、rt of this standard for each type of equipment shall be specified by the manufacturer and shall be measured by the methods of measurement given in Sub-clause2.1 of this standard. NOTEIf other characteristics are specified in addition to the above, the methods of measurement of these characteristics
31、shall be fully defined, IEC methods of measurement being used where they exist. Abbreviated technical specifications may be published, provided that all the information specified above is available to a prospective user before purchase of the equipment.BS5942-1:1980 BSI 12-1999 Publications referred
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