1、BRITISH STANDARD BS 6288-6: 1987 IEC 94-6: 1985 Incorporating Amendment No. 1 Magnetic tape sound recording and reproducing systems Part 6: Specification for reel-to-reel systems (Implementation of CENELEC HD311.6S1) UDC 681.846.7BS6288-6:1987 This British Standard, having been prepared under the di
2、rectionof the Electronic Equipment Standards Committee,was published underthe authority of the BoardofBSI and comes into effect on 27 February 1987 BSI 11-1999 The following BSI references relate to the work on this standard: Committee reference EEL/22 Draft for comment 79/33117 DC ISBN 0 580 15834
3、9 Committees responsible for this British Standard 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: Association of Professional Recording Studies Audio Engin
4、eering Society British Broadcasting Corporation British Kinematograph, Sound and Television Society British Tape Industry Association Independent Television Association Independent Television Commission National Council for Educational Technology Royal Photographic Society Royal Television Society S
5、ound and Communication Industries Federation Amendments issued since publication Amd. No. Date of issue Comments 6406 September 1991 Indicated by a sideline in the marginBS6288-6:1987 BSI 11-1999 i Contents Page Committees responsible Inside front cover National foreword iii Section 1. General 1 Sco
6、pe 1 Section 2. Mechanical requirements 12 Applications and mechanical/dimensional requirements of reels and hubs 1 12.1 Applications 1 12.2 Mechanical/dimensional requirements for reels and hubs 1 14 Allocation and dimensions of magnetic tracks according to tape carrier 7 14.1 Track patterns on6.3m
7、m wide tape 7 14.2 Track patterns on12.7mm wide tape 7 14.3 Track patterns on25.4mm wide tape 8 14.4 Track patterns on50.8mm wide tape 8 Figure 1 Hub with 20 mm centre hole 2 Figure 2 Reel with 8 mm centre hole 3 Figure 3 Reel with 76 mm centre hole 5 Figure 4 Hub with 76 mm centre hole 5 Figure 5 O
8、ne track one channel unidirectional monophonic recording, for professional use 9 Figure 6 Two track one channel bidirectional monophonic recording, for both professional and domestic use 10 Figure 7 Two track two channel unidirectional stereophonic recording, for both professional and domestic use 1
9、1 Figure 8 Two track two channel unidirectional stereophonic recording, for both professional and domestic use 12 Figure 9 Four track one channel bidirectional monophonic recording, for domestic use 13 Figure 10 Four track four channel unidirectional quadrophonic or other channel interrelated record
10、ing for both professionalanddomestic use 14 Figure 11 Two track two channel unidirectional stereophonicrecording, for professional use 15 Figure 12 Four track two channel bidirectional stereophonicrecording, for professional use 16 Figure 13 Four track four channel unidirectional quadrophonicorother
11、 channel interrelated recording, for professional use 17 Figure 14 Four track two channel bidirectional stereophonicrecording, for professional use 18 Figure 15 Four track four channel unidirectional recording, forprofessional use 19 Figure 16 Eight track eight channel unidirectional recording, forp
12、rofessional use 20 Figure 17 Sixteen track sixteen channel unidirectional recording,forprofessional use 21 Figure 18 Twenty-four track twenty-four channel unidirectionalrecording, for professional use 22BS6288-6:1987 ii BSI 11-1999 Page Figure 19 Thirty-two track thirty-two channel unidirectional re
13、cording,for professional use 23 Table 1 (Figure 2) Reel with 8 mm centre hole 4 Table II, III and IV 6 Publications referred to Inside back coverBS6288-6:1987 BSI 11-1999 iii National foreword This Part of BS 6288 has been prepared under the direction of the Electronic Equipment Standards Policy Com
14、mittee and is identical with IEC94-6:1985 “Magnetic tape sound recording and reproducing systems”, Part 6: “Reel-to-reel systems”, published by the International Electrotechnical Commission (IEC). This British Standard is also in agreement with Harmonization Document HD311.6S1, published by the Euro
15、pean Committee for Electrotechnical Standardization (CENELEC). Wherever the words “part of IEC Publication 94” appear, referring to this standard, they should be read as “Part of BS6288”. BS6288 consists of the following Parts: Part 1: Specification for general conditions and requirements; Part 2: S
16、pecification for calibration tapes; Part 3: Methods of measuring the characteristics of recording and reproducing equipment for sound on magnetic tape; Part 4: Methods for measuring the mechanical characteristics of magnetic tape for analogue recording; Part 5: Specification for electrical magnetic
17、tape properties; Part 6: Specification for reel-to-reel systems; Part 7: Specification for cassettes for commercial tape records and domestic use; Part 8: Specification for eight-track magnetic tape cartridge for commercial tape records and domestic use; Part 9: Specification for magnetic tape cartr
18、idge for professional use; Part 10: Specification for time and address codes; Part 11: Guide to an address code for compact cassettes. 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.
19、Compliance with a British Standard does not of itself confer immunity from legal obligations. Cross-reference International Standard Corresponding British Standard IEC 94-1:1981 BS 6288 Magnetic tape sound recording and reproducing systems Part 1:1982 Specification for general conditions and require
20、ments (Identical) Summary of pages This document comprises a front cover, an inside front cover, pages i to iv, pages1to 24, an inside back cover 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 ta
21、ble on the inside front cover.iv blankBS6288-6:1987 BSI 11-1999 1 Explanatory notes This part of IEC Publication94 shall be used in conjunction with the fourth edition(1981) of IECPublication94-1: Magnetic Tape Sound Recording and Reproducing Systems, Part 1: General Conditions and Requirements. The
22、 clause numbers in this part correspond to those in IEC Publication94-1 and any text given in this part shall modify the text given in IEC Publication 94-1. Absence of text in this part indicates that the provisions of the relevant clause in IEC Publication94-1 apply. Section 1. General 1 Scope This
23、 part applies to reel-to-reel recording and reproducing systems only. Section 2. Mechanical requirements 12 Applications and mechanical/dimensional requirements of reels and hubs 12.1 Applications 12.1.1 Professional programme exchange For professional programme exchange the following reels and hubs
24、 shall be used: 12.1.1.1 6.3 mm magnetic tape width Hub with20mm centre hole according toFigure 1, page2. Reel with8mm centre hole according toFigure 2, page3. Reel with76mm centre hole according toFigure 3, page5. Hub with 76 mm centre hole according toFigure 4, page5. 12.1.1.2 12.7 mm 25.4 mm 50.8
25、 mm magnetic tape width Reel with76mm centre hole according toFigure 3. Hub with76mm centre hole according toFigure 4. 12.1.2 Commercial tape records and domestic use For commercial tape records and for domestic use the following reel shall be used: 12.1.2.1 6.3 mm magnetic tape width Reel with8mm c
26、entre hole according toFigure 2. 12.2 Mechanical/dimensional requirements for reels and hubs The mechanical and dimensional requirements for reels and hubs are shown inFigure 1 toFigure 4 and their associated tables.BS6288-6:1987 2 BSI 11-1999 1. The hubs shall be so constructed that any profile sec
27、tion taken through the centre axis of the hub will fall within the hatched envelope. 2. The hubs may carry a label and a fixing device for the tape which are not shown. Figure 1 Hub with 20 mm centre holeBS6288-6:1987 BSI 11-1999 3 For dimensions C, D, E and the other conditions seeTable 1. Figure 2
28、 Reel with 8 mm centre holeBS6288-6:1987 4 BSI 11-1999 Table 1 (Figure 2) Reel with 8 mm centre hole The following conditions shall apply: Nominal size C 1 D min. E 1 Maximum moment of inertia Maximum mass mm mm mm mm kg m 2 g 75 45 a 75 75 14.10 6 30 100 45 a 90 100 40.10 6 50 130 45 90 127 110.10
29、6 60 150 50 90 147 200.10 6 80 180 60 90 178 450.10 6 110 180 102 90 178 450.10 6 110 220 90 90 220 800.10 6 140 250 100 90 250 1300.10 6 170 270 114 90 266 1500.10 6 200 a Some countries use a diameter of 35 mm. 1. Reels shall be symmetrical to permit mounting from either side. 3. Bosses, ribs or r
30、aised designs are permitted on the outside surfaces of the flanges, provided they do not extend beyond the planes defined by dimension13.5mm. 2. The width of13.5mm shall be obtained within the diameter D. The width outside diameter D shall be equal to or smaller than13.5mm.BS 6288-6:1987 BSI 11-1999
31、 5 for dimensions not indicated seeFigure 3. For dimension E F H J K L M S Figure 3 Reel with 76 mm centre hole See Table II III IV IV IV IV III III Figure 4 Hub with 76 mm centre holeBS 6288-6:1987 6 BSI 11-1999 Tables II, III and IV Dimensions of reel and hub with 76 mm centre hole Table II (Figur
32、e 3) Table III (Figure 3 and Figure 4) Table IV (Figure 3) Dimension E (reel only) Dimensions S, M and F Dimensions H, J, K and L Nominal size Actual size (E) Dimension S 0,15 M 0,5 F Dimension Plastic Metal Tape width Hubs only Plastic Metal Plastic Metal mm mm mm mm mm mm mm mm mm mm 200 202204 6,
33、3 8,9 13,0 11,7 a 0,08 0,05 H 1,5 max. b 1,3 max. 230 228230 12,7 15,2 18,1 0,08 0,05 J 2,8 max. b 2,0 max. 270 266268 25,4 27,9 30,8 0,12 0,05 K 76,4 +0,4 76,2 +0,2 360 355357 50,8 53,3 56,2 0,16 0,05 L 5,6 +0,3 5,6 +0,2 NOTE 1Reels and hubs shall be symmetrical to permit mounting from either side.
34、 NOTE 2Reels should be so constructed that any profile section taken through the centre axis of the reel will fall within the hatched area. This includes lateral run-out of the flanges, bosses, ribs or raised designs. a In some cases a shim will have to be used to ensure satisfactory tape travel. b
35、For 6.3 mm wide tape only.BS6288-6:1987 BSI 11-1999 7 14 Allocation and dimensions of magnetic tracks according to tape carrier Each of the following sub-clauses specifies a track pattern, its position on a tape of a given width and the allocation of channels to each magnetic track within the track
36、pattern. Each sub-clause has been provided with a figure, in which the left-hand drawing shows the track pattern (of interest to manufacturers of recording and reproducing heads) and the right-hand drawing shows the position of the track pattern on the tape (of interest to manufacturers of tape tran
37、sports). The recorded track pattern on the tape shall always comply with the provisions of both drawings. In the figures the direction of recording is indicated by the hatching on the tracks. For simultaneous recording on two or more tracks, the head gaps shall be in-line and the heads shall be so p
38、hased that at all frequencies: a) signals from a full track calibration tape shall, on reproduction, result in in-phase sound pressures from all loudspeakers (adjustment of reproducing head); b) in-phase signals to the record inputs shall, on reproduction, result in in-phase sound pressures from all
39、 loudspeakers (adjustment of recording head). 14.1 Track patterns on 6.3 mm wide tape 14.1.1 One track one channel unidirectional monophonic recording, for professional use See Figure 5, page 9. 14.1.2 Two track one channel bidirectional monophonic recording, for both professional and domestic use 1
40、) See Figure 6, page 10. 14.1.3 Two track two channel unidirectional stereophonic recording, for both professional and domestic use 1) See Figure 7, page11, and Figure 8, page 12. Track 1 shall carry the recording for the left-hand channel, Track 2 shall carry the recording for the right-hand channe
41、l. 14.1.4 Four track one channel bidirectional monophonic recording, for domestic use SeeFigure 9, page 13. The tracks shall be recorded in alternative directions in the sequence1-4-3-2. 14.1.5 Four tracks two channel bidirectional stereophonic recording, for domestic use SeeFigure 9. Tracks1and3sha
42、ll be used simultaneously for one direction of tape travel, tracks2and4for the other direction. Tracks1and4shall carry the recording for the left-hand channel, tracks3and2shall carry the recording for the right-hand channel. 14.1.6 Four track four channel unidirectional quadrophonic or other channel
43、 interrelated recording, for both professional and domestic use SeeFigure 10, page 14. 14.2 Track patterns on 12.7 mm wide tape 14.2.1 Two track two channel unidirectional stereophonic recording, for professional use SeeFigure 11, page 15. Track1shall carry the recording for the left-hand channel. T
44、rack2shall carry the recording for the right-hand channel. 1) To ensure trouble-free exchange of two track recordings of14.1.2 and14.1.3 it is recommended that the tape be erased for each track from the edge up to the middle line of the tape.BS6288-6:1987 8 BSI 11-1999 14.2.2 Four track two channel
45、bidirectional stereophonic recording, for professional use SeeFigure 12, page 16. Tracks1and2shall be used simultaneously for one direction of tape travel, tracks3and4for the other direction. Tracks1and4shall carry the recording for the left-hand channel, tracks2and3shall carry the recording for the
46、 right-hand channel. 14.2.3 Four track four channel unidirectional quadrophonic or other channel interrelated recording, for professional use See Figure 13, page 17. Where used at the tape speed of38.1cm/s for the exchange of discrete four-channel programme material between record companies, etc. th
47、e track allocation shall be as follows: No.1 track shall carry the recording for the front left-hand channel; No.2 track shall carry the recording for the front right-hand channel; No.3 track shall carry the recording for the rear left-hand channel and No.4 track shall carry the recording for the re
48、ar right-hand channel. 14.3 Track patterns on 25.4 mm wide tape 14.3.1 Four track two channel bidirectional stereophonic recording, for professional use See Figure 14, page 18. Tracks1and2shall be used simultaneously for one direction of tape travel, tracks3and4for the other direction. Tracks1and4sh
49、all carry the recording for the left-hand channel, tracks2and3shall carry the recording for the right-hand channel. 14.3.2 Four track four channel unidirectional recording, for professional use SeeFigure 15, page 19. 14.3.3 Eight track eight channel unidirectional recording, for professional use SeeFigure 16, page 20. 14
