1、BRITISH STANDARD BS 7063:1989 IEC 98:1987 Incorporating Amendment No. 1 Specification for Analogue audio disk records and reproducing equipment (Implementation of CENELEC HD 337 S3) UDC 681.844.001.4:681.85 + 681.844:620.1:006.3/.8BS7063:1989 This British Standard, having been prepared under the dir
2、ectionof the Electronic Equipment Standards Committee,was published underthe authority of the BoardofBSI and comes intoeffecton 28February1989 BSI 01-2000 The following BSI references relate to the work on this standard: Committee reference EEL/22 Draft for comment 84/28569 DC ISBN 0 580 17129 9 Com
3、mittees responsible for this BritishStandard The preparation of this British Standard was entrusted by the Electronic Equipment Standards Committee (EEL/-) to Technical Committee EEL/22, upon which the following bodies were represented: British Broadcasting Corporation British Kinematograph, Sound a
4、nd Television Society Council for Educational Technology for the United Kingdom Electronic Engineering Association Independent Television Association Sound and Communication Industries Federation The following bodies were also represented in the drafting of the standard, through subcommittees and pa
5、nels: Association of Professional Recording Studios Audio Engineering Society British Tape Industry Association Royal Photographic Society Training and Educational Systems Testing Bureau Amendments issued since publication Amd. No. Date of issue Comments 6403 September 1991 Indicated by a sideline i
6、n the marginBS7063:1989 BSI 01-2000 i Contents Page Committees responsible Inside front cover National foreword ii 1 Scope 1 2 Object 1 Section 1. General 3 Definitions 1 4 Units and symbols 3 5 Drawings 3 6 Scales for graphical presentation of data 3 Section 2. Compatibility between analogue audio
7、disk records and reproducing equipment 7 The disk 3 8 The groove 4 9 Label information 5 10 Recording and reproducing characteristics 5 11 Reproducing equipment 6 Section 3. Methods of measuring the characteristics of reproducing equipment for analogue audio disk records 12 Information required from
8、 manufacturers of record playing units 8 13 Conditions of measurement 11 14 Methods of measurement 11 Appendix A Test records for wow and flutter 22 Appendix B Measurement of signal/rumble ratio 22 Appendix C Examples of test records for the measurement of channel sensitivity (Sub-clause 14.5), chan
9、nel unbalance (Sub-clause 14.6), separation (Sub-clause 14.7), signal response (Sub-clause 14.8.1) and separation response (Sub-clause 14.8.2) 24 Appendix D Tracking ability (Sub-clause 14.9, Methods A, B and C) 25 Figure 1 Groove 17 Figure 2 Pickup cartridge (see Sub-clause 11.5) 18 Figure 3 Rated
10、recording and reproducing characteristics 19 Figure 4 Record types30and25 (see Sub-clauses 7.1 and 7.2) 20 Figure 5 Record type17 (see Sub-clauses 7.1 and 7.2) 21 Publications referred to Inside back coverBS7063:1989 ii BSI 01-2000 National foreword This British Standard has been prepared under the
11、direction of the Electronic Equipment Standards Committee and is identical with IEC98:1987 “Analogue audio disk records and reproducing equipment”, published by the International Electrotechnical Commission (IEC). This British Standard is also in agreement with Harmonization Document HD337S3, publis
12、hed by the European committee for Electrotechnical Standardization (CENELEC). This standard supersedes BS1928:1965and BS4852-1:1972which are both withdrawn. Terminology and conventions. The text of the International Standard has been approved as suitable for publication as a British Standard without
13、 deviation. Some terminology and certain conventions are not identical with those used in British Standards; attention is drawn especially to the following. For the purposes of this standard, the references made in Appendix C to BS1928, which is superseded by this standard, for catalogue numbers TCS
14、101, TCS104and TCS105should be read as referring to this British Standard, BS7063. Cross-references International Standard Corresponding British Standard IEC50 (806):1975 BS4727 Glossary of electrotechnical, power, telecommunication, electronics, lighting and colour terms Part 3:Group 10:1979Recordi
15、ng and reproduction of sound and video terminology (Technically equivalent) IEC 263:1982 BS 6397:1983 Specification for scales and sizes for plotting frequency characteristics and polar diagrams (Identical) BS 6840 Sound system equipment IEC 268-3:1988 Part 3:1989 Methods for specifying and measurin
16、g the characteristics of sound system amplifiers (Identical) IEC 268-5:1989 Part 5:1990Methods for specifying and measuring the characteristics of loudspeakers (Identical) IEC 386:1972 BS 4847:1989 Method of measurement of speed fluctuations in sound recording and reproducing equipment (Identical) I
17、EC 417:1973 BS 6217:1981 Guide to graphical symbols for use on electrical equipment (Identical) IEC 581-3:1978 BS 5942 High fidelity audio equipment and systems:minimum performance requirements Part 3:1980Specification for record playing equipment and cartridges (Identical) IEC 651:1979 BS 5969:1981
18、 Specification for sound level meters (Identical)BS7063:1989 BSI 01-2000 iii The Technical Committee has reviewed the provisions of IEC27, IEC38, IEC268-3and ISO1101, to which references are made in the text and has decided that they are acceptable for use in conjunction with this standard. IEC65:19
19、85, to which reference is made in the text, has been harmonized by CENELEC under HD195and is implemented by BS415:1990which is a related British Standard. The following related British Standards also exist: A British Standard does not purport to include all the necessary provisions of a contract. Us
20、ers of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. International Standard Corresponding British Standard ISO 406:1982 BS 308 Engineering drawing practice Part 2:1985Recommendations for
21、dimensioning and tolerancing of size (Technically equivalent) IEC 27 BS 5775 Specification for quantities, units and symbols. Parts are identical with the ISO31series ofParts IEC 38:1983 BS 77:1958 Specification. Voltages for a.c. transmission and distribution systems ISO 1101:1983 BS 308 Engineerin
22、g drawing practice Part 3:1972Geometrical tolerancing Summary of pages This document comprises a front cover, an inside front cover, pages i to iv, pages1to 26, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This w
23、ill be indicated in the amendment table on the inside front cover.iv blankBS7063:1989 BSI 01-2000 1 1 Scope This standard applies to analogue audio disk records and the corresponding professional and domestic reproducing equipment. It excludes amplifiers and loudspeakers, methods of measurement for
24、which can be found in IEC Publications268-3and268-5respectively. It also excludes all aspects of quality grading, which can be found in IEC Publication581-3. 2 Object This standard consists of three sections, the objects of which are as follows: Section 1 lists all general information necessary to e
25、nsure correct interpretation of subsequent sections of this standard. Section 2 specifies the parameters which are necessary to ensure compatibility between analogue audio disk records and the corresponding reproducing equipment. Section 3 lists and defines the most important parameters affecting th
26、e performance of reproducing equipment, and establishes agreed methods of measurement for these parameters. Section 1. General 3 Definitions The following definitions shall apply for the purposes of this standard. In cases where the definition appears in the International Electrotechnical Vocabulary
27、 (IEV) IEC Publication50, the appropriate reference is stated in brackets after the heading for the definition. 3.1 monophonic record (IEV 806-03-67) a record which carries one channel of information in the form of lateral displacements of a spiral groove 3.2 stereophonic record (IEV 806-03-68) a re
28、cord which carries two channels of information in the form of displacements of a single spiral groove in two mutually perpendicular directions 3.3 rated value exact theoretical or target value of a given parameter 3.4 nominal value approximate or abbreviated value of a given parameter 3.5 recorded v
29、elocity (v) (modified IEV 806-04-56) the alternating velocity imparted to a stylus tip of negligible dimensions fitted to a pickup head of negligible mechanical impedance when tracing the groove of a record rotating at rated angular velocity 3.6 reference recorded velocity (v 0 ) a recorded velocity
30、 of specified magnitude at a specified frequency 3.7 recorded level (modified IEV 806-02-09) relationship between any recorded velocity (v) and a reference recorded velocity (v 0 ) expressed on a logarithmic scale as follows: Recorded level = 20lg () dB v v 0 -BS7063:1989 2 BSI 01-2000 3.8 Recording
31、 and reproducing chains 3.8.1 recording chain (IEV 806-01-05) a chain for transmission of signals from the input of the system to and including the recording medium 3.8.2 reproducing chain (IEV 806-01-09) a chain for transmission of the signals from the recording medium to the output of the system 3
32、.9 Recording and reproducing characteristics For ideal reproduction, the recording characteristic is the mirror image of the reproducing characteristic, so that constant level signals at various frequencies applied to the input of the recording chain shall result in constant level signals at the out
33、put of the reproducing chain. For practical reproduction, in order to minimize the effects of mechanical imperfections in the reproducing chain, the rated reproducing characteristic is not the mirror image of the rated recording characteristic at low frequencies. 3.9.1 recording characteristic (modi
34、fied IEV806-02-11) the recorded levels obtained, as a function of frequency, when constant level signals at various frequencies are applied to the input of a recording chain 3.9.2 reproducing characteristic (modified IEV806-02-14) the reproduced (output) levels obtained, as a function of frequency,
35、when constant recorded levels at various frequencies are applied to the input of a reproducing chain 3.10 plain groove (IEV806-03-14) any length of groove which carries no recording 3.11 lead-in groove (modified IEV806-03-16) the length of plain groove that starts near the periphery of the record an
36、d the pitch of which is greater than the normal recording pitch 3.12 received surface (modified IEV806-03-26) the portion of the surface of a record on which the groove spacing is at normal recording pitch except on marker spaces, if any 3.13 marker space (IEV806-03-29) a portion of the recorded sur
37、face where the groove pitch has been increased to mark the separation of two successive bands of recording 3.14 lead-out groove (modified IEV806-03-17) the length of plain groove which succeeds the recorded surface, and the pitch of which is greater than the normal recording pitch 3.15 finishing gro
38、ove (modified IEV806-03-18) the plain circular groove which succeeds the lead-out groove 3.16 tracking force the static force between stationary record and reproducing stylus when in the playing positionBS7063:1989 BSI 01-2000 3 4 Units and symbols Unless otherwise stated, the letter symbols for qua
39、ntities and units are in accordance with IECPublication27. 5 Drawings Unless otherwise stated, the drawings are given in accordance with IEC and ISO standards. Amongst the most important of these are ISO Standards406and1101. 6 Scales for graphical presentation of data 6.1 General Linear or logarithm
40、ic scales are recommended for graphical presentation. Linear decibel scales are equivalent to logarithmic scales. Other kinds of scale, such as double logarithmic, should be avoided. When using decibel scales, the zero reference should, if possible, be the rated value. In those cases, where each of
41、the scales refers directly to physical units, it is recommended to avoid a combination of linear and logarithmic scales. Where quantities represented by abscissae and ordinates are of the same kind, it is recommended that the same unit length be used for both. Linear scales with remote zero point sh
42、ould be avoided as far as possible. For further information see IEC Publication263. 6.2 Scales for frequency characteristics Graphs should be drawn with frequency in hertz as abscissae on a logarithmic scale, and the level expressed in decibels as ordinates on a linear scale. The scale ratio should
43、be such that the length representing one decade of frequency is the same as the length representing25dB or50dB difference in level. The preferred length per decade is50mm. If the size of the graph is changed, the scale ratio should be left unaltered. Section 2. Compatibility between analogue audio d
44、isk records and reproducing equipment 7 The disk 7.1 Types of disk record The following types of disk record shall be standard: 7.2 Dimensions of disk The dimensions for types3033, 2533and3045are shown in Figure 4, page20. The dimensions for types 1733and 1745are shown in Figure 5, page 21. 7.3 Unba
45、lance of disk The centre of gravity of disks having a small centre hole shall lie within an8mm diameter circle concentric with the centre of the centre hole. 7.4 Direction of rotation The direction of rotation of the disk shall be clockwise when viewed from the side being reproduced. Type designatio
46、n Nominal diameter (cm) Nominal speed (rev/min) 3033 2533 1733 3045 1745 30 25 17 30 17 33 33 33 45 45BS7063:1989 4 BSI 01-2000 7.5 Direction of recording The direction of recording shall be such that, on reproduction, the pickup shall travel as closely as possible along a straight line towards the
47、centre of the disk. 7.6 Speed of rotation The speed of rotation during recording shall be within 0.5% of the rated recording speed, the rated recording speed being such as to give the intended musical pitch at one of the following rated reproducing speeds: 33% rev/min: for disk record types3033, 253
48、3and1733, 45 rev/min:for disk record types3045and1745. NOTEVerification of reproducing speed by means of stationary stroboscopic bars in countries employing50Hz electric supplies can be made at45.11rev/min only (see Sub-clause 14.2.1). 8 The groove 8.1 Direction of groove modulation The stereophonic
49、 groove shall carry two channels of information. The two channels shall be recorded in such a manner that they can be reproduced by movements of a reproducing stylus tip in two directions at90 to each other, and at45 to a radial line through the stylus tip and the centre of the record; these movements shall be tangential to, or lie in a plane through the stylus tip and the record centre, inclined at an angle of20anticlockwise to the normal to the record surface through the stylus tip as viewed towards the record centre (vertical tracking angle). The resul
