BS EN 60774-3-1994 Specification for helical-scan video tape cassette system using 12 65 mm (0 5 in) magnetic tape on type VHS - S-VHS《VHS型12 65mm(0 5 in)螺旋盒式磁带录像系统规范 第3部分 S-VHS》.pdf
《BS EN 60774-3-1994 Specification for helical-scan video tape cassette system using 12 65 mm (0 5 in) magnetic tape on type VHS - S-VHS《VHS型12 65mm(0 5 in)螺旋盒式磁带录像系统规范 第3部分 S-VHS》.pdf》由会员分享,可在线阅读,更多相关《BS EN 60774-3-1994 Specification for helical-scan video tape cassette system using 12 65 mm (0 5 in) magnetic tape on type VHS - S-VHS《VHS型12 65mm(0 5 in)螺旋盒式磁带录像系统规范 第3部分 S-VHS》.pdf(20页珍藏版)》请在麦多课文档分享上搜索。
1、BRITISH STANDARD BS EN 60774-3:1994 IEC 774-3: 1993 Specification for Helical-scan video tape cassette system using12.65mm(0.5in) magnetic tape on typeVHS Part3: S-VHS The European Standard EN60774-3:1993 has the status of a BritishStandard UDC 621.397.454:620.1BSEN60774-3:1994 This BritishStandard,
2、 having been prepared under the directionof the Electronic Equipment Standards Policy Committee, was published underthe authority of the Standards Board and comesinto effect on 15May1994 BSI 01-2000 The following BSI references relate to the work on this standard: Committee reference EEL/22 Draft fo
3、r comment91/34805DC ISBN 0 580 23020 1 Cooperating organizations The European Committee for Electrotechnical Standardization (CENELEC), under whose supervision this European Standard was prepared, comprises the national committees of the following countries: Austria Italy Belgium Luxembourg Denmark
4、Netherlands Finland Norway France Portugal Germany Spain Greece Sweden Iceland Switzerland Ireland United Kingdom Amendments issued since publication Amd. No. Date CommentsBSEN60774-3:1994 BSI 01-2000 i Contents Page Cooperating organizations Inside front cover National foreword ii Foreword 2 Text o
5、f EN60774-3 5 National annex NA (informative) Committees responsible Inside back cover National annex NB (informative) Cross-references Inside back coverBSEN60774-3:1994 ii BSI 01-2000 National foreword This Part of this BritishStandard has been prepared under the direction of the Electronic Equipme
6、nt Standards Policy Committee and is the English language version of EN60774-3:1993 Helical-scan video tape cassette system using12,65mm(0,5in) magnetic tape on type VHS. Part3: S-VHS, published by the European Committee for Electrotechnical Standardization (CENELEC). It is identical with IEC774-3:1
7、993, published by the International Electrotechnical Commission (IEC). Additional information. Currently, both single-layer and double-layer tapes are available from different manufacturers. Double-layer coating allows the long and short wavelength characteristics of the tape to be designed separate
8、ly. This can be especially beneficial for chroma noise in colour-under systems. S-VHS recorders with a menu set-up facility have been recently introduced, which allows the user to select equalization (and possibly other record or reproduce characteristics) to match the type of tape in use. For the p
9、urposes of this set-up system, tapes have to be identified as type1,2,3 or4. It is understood that currently type2 is double-layer coated, type3 is single-layer and types1 and4 are not yet in use. A New Work Item Proposal has been submitted to the IEC proposing an amendment to IEC774-3 to incorporat
10、e information on the different tapes available and their uses. 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 immunity fr
11、om legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, theEN title page, pages2 to14, 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 indicate
12、d in the amendment table on the inside front cover.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN60774-3 November1993 UDC 621.397.454:620.1 Descriptors: Video recording, electroacoustic equipment, videorecorder, magnetic tapes, cassettes for magnetic tapes, recording characteristics English ve
13、rsion Helical-scan video tape cassette system using12,65mm (0,5in) magnetic tape on type VHS Part3: S-VHS (IEC774-3:1993) Systme de magntoscope cassette balayage hlicodal utilisant la bande magntique de12,65mm(0,5in) format VHS Partie3: S-VHS (CEI774-3:1993) Video-Bandkassettensystem mit Schrgspurau
14、fzeichnung auf Magnetband12,65mm(0,5in) VHS-Format Teil3: S-VHS (IEC774-3:1993) This European Standard was approved by CENELEC on1993-09-22. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a
15、national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CENELEC member. This European Standard exists in three official versions (English, French, German). A versi
16、on in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Denmark, Finland, Fr
17、ance, Germany, Greece, Iceland, Ireland, Italy,Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland andUnitedKingdom. CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Cent
18、ral Secretariat: rue de Stassart 35, B-1050 Brussels 1993 Copyright reserved to CENELEC members Ref. No. EN60774-3:1993 EEN60774-3:1993 BSI 01-2000 2 Foreword The text of document60B (CO)143, as prepared by Sub-Committee60B: Video recording, of IEC Technical Committee No.60: Recording, was submitted
19、 to the IEC-CENELEC parallel vote in October1992. The reference document was approved by CENELEC as EN60774-3 on22September1993. The following dates were fixed: Annexes designated “normative” are part of the body of the standard. Annexes designated “informative” are given only for information. In th
20、is standard, Annex A and Annex ZA are normative and Annex B is informative. Contents Page Foreword 2 Section 1. General 1.1 Scope 5 1.2 Normative references 5 Section 2. S-VHS video tape cassette 2.1 Mechanical parameters 5 2.1.1 Cassette identification 5 2.1.2 Dimensions, reel, front cover, etc. 5
21、2.2 Name 5 Section 3. Compact S-VHS video tape cassette 3.1 Mechanical parameters 5 3.1.1 Cassette identification 5 3.1.2 Dimensions, reel, front cover, E-value, etc. 6 3.2 Name 6 Section 4. Tape characteristics of S-VHS and compact S-VHS video cassettes 4.1 Dimensions of magnetic tape 6 4.2 Magneti
22、c tape properties 6 4.2.1 Coercivity 6 4.2.2 Others 6 4.3 Reference tape 6 4.4 RF recording current characteristics 6 4.5 RF playback output 6 4.6 Leader tape and trailer tape 6 Section 5. S-VHS video cassette recorders 5.1 Tape speed 6 5.2 Others 6 5.3 Track configuration and dimensions 7 5.3.1 Rec
23、ord locations 7 5.3.2 Others 7 Section 6. Recording characteristics 6.1 FM recording of luminance component 7 6.1.1 Sub pre-emphasis and main pre-emphasis 7 6.1.2 Clipping levels 7 6.1.3 Modulation characteristics 7 6.1.4 Recording level 7 6.2 525 line-60 field chrominance signalrecording 7 6.2.1 Lu
24、minance component level in theconverted chrominance signal 7 6.2.2 Recording level 8 6.3 625 line-50 field chrominance signalrecording 8 latest date of publication of an identical national standard (dop)1994-10-01 latest date of withdrawal of conflicting national standards (dow)1994-10-01EN60774-3:1
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