BS-6288-8-1989 IEC-60094-8-1987.pdf
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1、BRITISH STANDARD BS 6288-8: 1989 IEC 94-8:1987 Magnetic tape sound recording and reproducing systems Part 8: Specification for eight-track magnetic tape cartridge for commercial tape records and domestic use UDC 681.846.7 Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 09:50:33 GMT+00:00 2006
2、, Uncontrolled Copy, (c) BSI BS 6288-8:1989 This British Standard, having been prepared under the direction of the Electronic Equipment Standards Committee, was published under the authority of the Board of BSI and comes into effect on 28 February 1989 BSI 12-1999 The following BSI references relate
3、 to the work on this standard: Committee reference EEL/22 Draft for comment 79/33117 DC ISBN 0 580 17143 4 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, up
4、on which the following bodies were represented: British Broadcasting Corporation British Kinematograph, Sound and Television Society Council for Educational Technology for the United Kingdom Electronic Engineering Association Independent Broadcasting Authority Independent Television Association Soun
5、d and Communication Industries Federation The following bodies were also represented in the drafting of the standard, through subcommittees and panels: Association of Professional Recording Studios Audio Engineering Society British Tape Industry Association Royal Photographic Society Training and Ed
6、ucational Systems Testing Bureau Amendments issued since publication Amd. No.Date of issueComments Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 09:50:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6288-8:1989 BSI 12-1999i Contents Page Committees responsibleInside front cover National fo
7、rewordii Section 1. General 1Scope1 2Definitions1 Section 2. Mechanical requirements for cartridges and for recording and reproducing equipment 3Tape speed1 4Tape winding1 5Position, utilization and dimensions of magnetic tracks1 6Mechanical specifications2 Section 3. Electrical requirements for rec
8、ording and reproducing equipment 7Recorded tape flux characteristic2 8Reproducing characteristic2 9Tolerances on recording and reproducing characteristics2 Section 4. Magnetic tape 10Dimension3 11Sensing foil3 12Flammability3 13Identification of tape sides3 Figure 1 Dimensions of the cartridge4 Figu
9、re 2 Head and switch positioning6 Figure 3 True point checking fixture7 Figure 4 Position of tracks8 Table I Track allocation for two-channel sound9 Table II Track allocation for four-channel sound9 Publications referred toInside back cover Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 09:5
10、0:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6288-8:1989 ii BSI 12-1999 National foreword This Part of BS 6288 was prepared under the direction of the Electronic Equipment Standards Committee and is identical with IEC 94-8:1987 “Magnetic tape sound recording and reproducing systems” Part 8 “Ei
11、ght-track magnetic tape cartridge for commercial tape records and domestic use”, published by the International Electrotechnical Commission (IEC). BS 6288 consists of the following Parts: Part 1: Specification for general conditions and requirements; Part 2: Specification for calibration tapes; Part
12、 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 tape properties1); Part 6: Specification
13、 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 cartridge for professional use1); Part 10:
14、Specification for time and address codes1); Part 11: Guide to an address code for compact cassettes1). Terminology and conventions. The text of the International Standard has been approved as suitable for publication as a British Standard without deviation. Some terminology and certain conventions a
15、re not identical with those used in British Standards; attention is drawn especially to the following. In the figures, the comma has been used as a decimal marker. In British Standards it is current practice to use a full point on the baseline as the decimal marker. A British Standard does not purpo
16、rt 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 immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front co
17、ver, pages i and ii, pages 1 to 10, 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 table on the inside front cover. 1) In preparation. Cross-references International Standard
18、Corresponding British Standard IEC 94-1:1981BS 6288 Magnetic tape sound recording and reproducing systems Part 1:1982 Specification for general conditions and requirements (Identical) Licensed Copy: sheffieldun sheffieldun, na, Tue Dec 05 09:50:33 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6288-8
19、:1989 BSI 12-19991 Section 1. General 1 Scope This standard applies to magnetic tape sound recording with eight-track endless loop cartridges for both stereo and four-channel sound. 2 Definitions The following definitions apply for the purposes of this standard. 2.1 endless loop cartridge a device c
20、omposed of a case containing a recorded or unrecorded magnetic tape in the form of a multiturn endless loop carried on a single hub. The tape is unwound from the inside turn of the loop and returned to the outside turn of the loop the device can be easily and rapidly inserted in a recorder or reprod
21、ucer designed for the purpose without handling the magnetic tape 2.2 capstan the spindle or shaft, often the motor shaft itself, which drives the tape 2.3 pressure roller (pinch roller) an idler roller which holds the magnetic tape against the capstan NOTESometimes called “puck” in the USA. 2.4 caps
22、tan pressure pad a member that holds the tape against the capstan in order to obtain suitable driving action of the tape 2.5 magnetic head an electromagnetic transducer for converting electric signal variations into magnetic flux variations or the converse 2.6 external tape guide a mechanical forked
23、 arm used to position the tape in a fixed path across the magnetic head 2.7 internal tape supports the members within the case to maintain the tape within an appropriate path 2.8 switch head a device that is utilized to change the magnetic head position. In its simplest form, the switch head may con
24、sist of two electrical contacts that are shorted by a strip of conducting foil placed on the magnetic tape 2.9 pressure pad a resilient member used to hold the tape against a head Section 2. Mechanical requirements for cartridges and for recording and reproducing equipment 3 Tape speed The tape spee
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