1、BRITISH STANDARD BS EN 60843-2:1995 BS7065-2: 1994 IEC843-2: 1992 Incorporating Amendment No.1 Helical-scan video tapecassette system using8mm magnetic tape 8mm Video Part 2: PCM multi-track audio system The European Standard EN60843-2:1995 has the status of a BritishStandard ICS 33.160.40BSEN60843-
2、2:1995 This BritishStandard, having been prepared under the directionof the Electronic Equipment Standards Policy Committee, was published underthe authority of the Standards Board and comesintoeffect on 15 March1994 BSI04-2000 The following BSI references relate to the work on this standard: Commit
3、tee reference EEL/22 Draft for comment91/20968DC ISBN 0 580 23040 6 Committees responsible for this BritishStandard The preparation of this BritishStandard was entrusted by the Electronic Equipment Standards Policy Committee (EEL/-) to Technical Committee EEL/22 upon which the following bodies were
4、represented: Association of Professional Recording Services Ltd. Audio Engineering Society British Broadcasting Corporation British Kinematograph, Sound and Television Society British Tape Industry Association Electronic Components Industry Federation Independent Television Association National Coun
5、cil for Educational Technology (NCET) Royal Photographic Society Royal Television Society Amendments issued since publication Amd. No. Date Comments 8874 November 1995 Indicated by a sideline in the marginBSEN60843-2:1995 BSI 04-2000 i Contents Page Committees responsible Inside front cover National
6、 foreword ii Foreword 2 Text of EN 60843-2 3 List of references Inside back coverBSEN60843-2:1995 ii BSI 04-2000 National foreword This BritishStandard has been prepared by Technical Committee EPL/60 and is the English language version of EN60843-2:1995 Helical-scan video tape cassette system using8
7、mm magnetic tape8mm video, Part 2: PCM multi-track audio system, published by the European Committee for Electrotechnical Standardization (CENELEC). It is identical with IEC843-2:1992, published by the International Electrotechnical Commission (IEC). The designation as BS7065-2 has been retained for
8、 ease of reference to other Parts of the BS7065 series. 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 from lega
9、l obligations. Cross-references Publications referred to Corresponding BritishStandard BS EN60843 Helical-scan video tape cassette system using8mm magnetic tape8mm Video EN60843-1:1994 (IEC843-1:1993) Part 1:1994 General specifications EN60843-3:1993 (IEC843-3:1993) Part 3:1993 High-band specificati
10、ons for Hi8 EN61105:1993 (IEC1105:1991) BS EN61105:1994 Specification for reference tapes for video tape recorder systems Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, theEN title page, pages2 to12, an inside back cover and a back cover. This standard h
11、as been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN60843-2 June1995 ICS 33.160.40 Descriptors: Video recording, sound recording, electroacoustic equ
12、ipment, video tape recorder, magnetic tapes, cassettes for magnetic tapes, recording tracks, specifications, dimensions, recording characteristics English version Helical-scan video tape cassette system using8mm magnetic tape 8mm Video Part 2: PCM multi-track audio system (IEC843-2:1992) Systme de m
13、agntoscope cassette balayage hlicodal utilisant la bande magntique de8mm Vido8mm Partie 2: Systme audio multipiste MIC (CEI843-2:1992) Videoband-Kassettensystem mit Schrgspuraufzeichnung auf Magnetband8mm8mm Video Teil2: PCM-Vielfachspur-Audiosystem (IEC843-2:1992) This European Standard was approve
14、d by CENELEC on1995-05-15. 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 national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
15、 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 version in any other language made by translation under the responsibility of a CENELEC member into its own language an
16、d 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, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerl
17、and andUnitedKingdom. CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B-1050 Brussels 1995 Copyright reserved to CENELEC members Ref. No. EN60843-
18、2:1995 EEN60843-2:1995 BSI 04-2000 2 Foreword The text of the International Standard IEC843-2:1992, prepared by SC60B, Video recording, of IEC TC60, Recording, was submitted to the formal vote and was approved by CENELEC as EN60843-2 on1995-05-15 without any modification. The following dates were fi
19、xed: Annexes designated “normative” are part of the body of the standard. In this standard, Annex A, Annex B and Annex ZA are normative. Annex ZA has been added by CENELEC. Contents Page Foreword 2 1 General 3 1.1 Scope 3 1.2 Normative references 3 2 Track configuration and dimensions 3 2.1 Track al
20、location and track number 3 2.2 Recording track pattern 4 3 Tracking pilot signal recording 4 3.1 Recording current 4 4 Multi-track mode recognition signal 4 5 Assignment of ID words 5 Annex A (normative) Multi-track mode recognition signal (MTS) 6 Annex B (normative) Assignment of ID words (mode7)
21、6 Annex ZA (normative) Normative references to international publications with their corresponding European publications 12 Figure 1 Track allocation and track number 3 Figure 2 Track configuration 4 Figure B.1 Mode7 recording sequence examples 9 Figure B.2 B7 control bit of ID1 10 Figure B.3 Cue ma
22、rk and blank mark 10 Figure B.4 Examples of ID2 and ID3 recording sequences 11 Figure B.5 Examples of ID4 recording sequences 11 Table 1 Track area allocation and wrap angle 4 Table 2 Assignment of mode7 ID words 5 Table B.1 ID1 (recording conditions) 6 Table B.2 ID2 and ID3 (time) 7 Table B.3 ID2 a
23、nd ID3 codes 8 Table B.4 ID4 (Program number/C-number) 9 latest date by which the ENhas to be implemented at national level by publication of an identical national standard or by endorsement (dop)1996-07-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow
24、)1996-07-01EN60843-2:1995 BSI 04-2000 3 1 General 1.1 Scope This part of IEC843 provides multi-track specifications for PCM audio recording and playback with8mm video systems. This part is applicable to both525 line60 field and625 line50 field TV signals. 1.2 Normative references The following norma
25、tive documents contain provisions which, through reference in this text, constitute provisions of this part of IEC843. At the time of publication, the editions indicated were valid. All normative documents are subject to revision, and parties to agreements based on this part of IEC843 are encouraged
26、 to investigate the possibility of applying the most recent editions of the normative documents indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. IEC843-1, Helical-scan video tape cassette system using8mm magnetic tape8mm Video Part1:General (in p
27、reparation). IEC843-3, Helical-scan video tape cassette system using8mm magnetic tape8mm Video Part3:High-band specifications for8mm Video Hi8 (in preparation). IEC1105:1991, Reference tapes for video tape recorder systems. 2 Track configuration and dimensions 2.1 Track allocation and track number F
28、igure 1 Track allocation and track numberEN60843-2:1995 4 BSI 04-2000 Table 1 Track area allocation and wrap angle 2.2 Recording track pattern PCM audio signals can be recorded on any one of the six tracks, independently of other tracks (seeFigure 2). 3 Tracking pilot signal recording 3.1 Recording
29、current The recording current shall be123dB below the level of the chrominance recording current specified in IEC843-1. 4 Multi-track mode recognition signal One proposal regarding the multi-track mode recognition signal (MTS) is described in Annex A. Content 525 line 60 field system 625 line 50 fie
30、ld system a Clock run-in 2,06 (3,0H) 2,09 (3,6H) 1) 5,0 (7,3H) 5,0 (8,7H) 2) b Data area 26,32 (38,4H) 26,29 (45,6H) 3) c After-recording margin including f 5 2,06 (3,0H) 2,09 (3,6H) d Track guard 2,62 (3,8H) 2,62 4,5H) NOTES 1) Minimum value. 2) Maximum value. 3) The tolerance of the recording posi
31、tion is: 1,03 ( 1,5 H) for the525 line60 field system 1,04 ( 1,8 H) for the625 line50 field system (H is a horizontal scanning line) Figure 2 Track configurationEN60843-2:1995 BSI 04-2000 5 5 Assignment of ID words For mode1 to mode6, see22.2.5 and22.2.6 of IEC843-1. Mode7 ID words shall be used spe
32、cifically for the PCM multi-track system. The assignment of ID words shall be as described in Table 2. Table 2 Assignment of mode7 ID words B0 B1 B2 B3 B4 B5 B6 B7 Coding ID0 Mode number 1 1 1 0 0 0 0 0 Binary ID1 Recording conditions Numeral ID2 Time SeeAnnex B Numeral ID3 ID4 Program number/C-numb
33、er Numeral NOTEMode7 IDs shall be recorded in every two frames at least using the CH-1 head. Recording of other mode IDs shall be made by the CH-2 head. When not using mode7 IDs, all “0” shall be recorded by the CH-1 head. The use of ID2 to ID4 in mode7 is optional and when not in use, “0” shall be
34、recorded at their positions. SeeAnnex B for examples of mode7 recording sequences.EN60843-2:1995 6 BSI 04-2000 Annex A (normative) Multi-track mode recognition signal (MTS) Frequency multiplexing with the PCM carrier and the tracking pilot signal is used for recording the multi-track mode recognitio
35、n signal (MTS) in order to ensure automatic reproduction mode selection and recorded signal detection. The multi-track mode recognition signal is required to satisfy the following requirements. a) Frequency 228748 100Hz(378 fH/26) for the525 line60 field system 225361 100Hz(375 fH/26) for the625 lin
36、e50 field system The harmonic distortion shall not exceed20dB. b) Recording current The recording current shall be 12 3dB below the level of the chrominance recording current specified in IEC843-1. c) Recording area The multi-track recognition signal shall be recorded continuously except the track g
37、uard area “d” (seeFigure 1). Annex B (normative) Assignment of ID words (mode7) Table B.1 ID1 (recording conditions) ID1 (recording conditions) B7 0: Control bit 1) 1: Control bit 1) B6 Cue mark 2) 1: No cue mark 0: Cue mark 0 B5 Blank mark 2) Following recording position on the next track 3) 0: Typ
38、e1 Same as the position on the present track 1: Type2 Beginning of the next track B4 0 1 1 B5 0: Invalid 0: Sound 1: Blank mark B4 1 B3 4) Next track number 3) B1 B2 B3 B2 Tape speed 4) 0 1 1 0 1: 1: Track n1 Track n2 B1 0 1 B2 0: Standard play 0: “ tape speed 0 1 0 0 1 1 1: 0: 0: Track n3 Track n4
39、Track n5 B1 0 1 1: Other1 1: Other2 1 1 0 1 0: 1: Track n6 1: Increment B0 0 4) 0 NOTES 1) SeeFigure B.2 for B7 (control bit) of ID1. 2) SeeFigure B.3 for cue and blank marks. 3) SeeFigure B.2 for the following recording position on the next track and the track number. 4) B0 to B3 of ID1 in mode7 ar
40、e mandatory and others are optional. When not using B4 to B7 of ID1: B0 shall be “0”; B1 and B2 shall be “tape speed”; B3 shall be “1”; B4 to B7 shall all be “0”.EN60843-2:1995 BSI 04-2000 7 Table B.2 ID2 and ID3 (time) Table B.2a) Time from the beginning of each program B0 B1 B2 B3 B4 B5 B6 B7 Codi
41、ng ID0 Mode number 1 1 1 0 0 0 0 0 Binary code ID2 Minute Units (09) Tens (05) 0 1) 4) ID3 Second Units (09) Tens (05) 0 2) 4) Table B.2b) Time from the beginning of each program B0 B1 B2 B3 B4 B5 B6 B7 Coding ID0 Mode number 1 1 1 0 0 0 0 0 Binary code ID2 Hour Units (09) Tens (05) 0 1) 4) ID3 Seco
42、nd Units (09) Tens (05) 0 2) 4) Table B.2c) Time from the beginning of the track B0 B1 B2 B3 B4 B5 B6 B7 Coding ID0 Mode number 1 1 1 0 0 0 0 0 Binary code ID2 Minute Units (09) Tens (05) 0 1) 4) ID3 Second Units (09) Tens (05) 1 2) 4) Table B.2d) Time from the beginning of the track B0 B1 B2 B3 B4
43、B5 B6 B7 Coding ID0 Mode number 1 1 1 0 0 0 0 0 Binary code ID2 Hour Units (09) Tens (05) 1 1) 4) ID3 Second Units (09) Tens (05) 1 2) 4) Table B.2e) Year and month B0 B1 B2 B3 B4 B5 B6 B7 Coding ID0 Mode number 1 1 1 0 0 0 0 0 Binary code ID2 Month 3) Month 0 3) 0 3) 0 3) 4) ID3 Year 3) Units (09)
44、Tens (09) 4) Table B.2f) Day and week B0 B1 B2 B3 B4 B5 B6 B7 Coding ID0 Mode number 1 1 1 0 0 0 0 0 Binary code ID2 Week 3) Week 0 3) 0 3) 1 3) 4) ID3 Day 3) Units (09) Tens (03) 4) NOTES 1) B7 of ID2 is the control bit for ID2. 0: 1: Minute Hour 2) B7 of ID3 is the control bit for ID2 and ID3. 0:
45、1: Time from the beginning of each program. Time from the beginning of the track. 3) If both B5 and B6 of ID2 are “0”, B7 of ID2 is the control bit for ID2 and ID3. 0: B0 to B4 of ID2 . Month B0 to B7 of ID3 . Year 1: B0 to B4 of ID2 . Week B0 to B7 of ID3 . Day 4) Refer to Table B.3a), Table B.3b)
46、and Table B.3c) for ID2 and ID3 (hour, minute, month and week) codes. For ID2 (year and day) codes, refer to Table VIII ofIEC 843-1. Refer to Figure B.4 for ID2 and ID3.EN60843-2:1995 8 BSI 04-2000 Table B.3 ID2 and ID3 codes Table B.3a) Hour and minute codes B6 0 0 0 0 1 1 1 1 B5 0 0 1 1 0 0 1 1 B4
47、 0 1 0 1 0 1 0 1 B3 B2 B1 B0 7 6 5 4 3 2 1 0 0 1 1 0 9 79 69 59 49 39 29 19 09 0 1 1 1 8 78 68 58 48 38 28 18 08 1 0 0 0 7 77 67 57 47 37 27 17 07 1 0 0 1 6 76 66 56 46 36 26 16 06 1 0 1 0 5 75 65 55 45 35 25 15 05 1 0 1 1 4 74 64 54 44 34 24 14 04 1 1 0 0 3 73 63 53 43 33 23 13 03 1 1 0 1 2 72 62 5
48、2 42 32 22 12 02 1 1 1 0 1 71 61 51 41 31 21 11 01 1 1 1 1 0 70 60 50 40 30 20 10 00 Table B.3b) Month code B4 0 1 B3 B2 B1 B0 0 1 1 0 9 September 0 1 1 1 8 August 1 0 0 0 7 July 1 0 0 1 6 June 1 0 1 0 5 May 1 0 1 1 4 April 1 1 0 0 3 March 1 1 0 1 2 December February 1 1 1 0 1 November January 1 1 1
49、 1 0 October Table B.3c) Week code B4 1 B3 B2 B1 B0 1 0 0 1 6 Saturday 1 0 1 0 5 Friday 1 0 1 1 4 Thursday 1 1 0 0 3 Wednesday 1 1 0 1 2 Tuesday 1 1 1 0 1 Monday 1 1 1 1 0 SundayEN60843-2:1995 BSI 04-2000 9 Table B.4 ID4 (Program number/C-number) Table B.4a) Program number B0 B1 B2 B3 B4 B5 B6 B7 Coding ID0 Mode number 1 1 1 0 0 0 0 0 Binary code ID4 Program number Units(09) Tens(07) 0 2) 3) Tableau B.4b) Numr
