IEC 61120-2-1991 Digital audio tape recorder reel to reel system using 6 3 mm magnetic tape for professional use part 2 format A《专业用6.3mm磁带的数字音频盘式磁带录音系统 第2部分 格式A》.pdf

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1、NORME I NTE RN AT1 ON ALE INTERNATIONAL STANDARD CE1 IEC 11 20-2 Premire dition First edition 1991-1 O Systme denregistrement bande audio- numrique, bobine bobine, utilisant une bande magntique de 6,3 mm, usage professionnel Partie 2: Format A Digital audio tape recorder reel to reel system, using 6

2、3 mm magnetic tape, for professional use Part 2: Format A Numro de rfrence Reference number CEMEC 1120-2: 1991 Validit de la prsente publication Le contenu technique des publications de la CE1 est cons- tamment revu par la CE1 afin quil reflte ltat actuel de la technique. Des renseignements relatif

3、s la date de reconfirmation de la publication sont disponibles auprs du Bureau Central de la CEI. Les renseignements relatifs ces rvisions, ltablis- sement des ditions rvises et aux amendements peuvent tre obtenus auprs des Comits nationaux de la CE1 et dans les documents ci-dessous: Bulletin de la

4、CE1 Annuaire de la CE1 Publi annuellement Catalogue des publications de la CE1 Publi annuellement et mis jour rgulirement Terminologie En ce qui concerne la terminologie gnrale, le lecteur se reportera la CE1 50: Vocabulaire Electrotechnique lnter- national (VEI), qui se prsente sous forme de chapit

5、res spars traitant chacun dun sujet dfini. Des dtails complets sur le VE1 peuvent tre obtenus sur demande. Voir galement le dictionnaire multilingue de la CEI. Les termes et dfinitions figurant dans la prsente publi- cation ont t soit tirs du VEI, soit spcifiquement approuvs aux fins de cette public

6、ation. Symboles graphiques et littraux Pour les symboles graphiques, les symboles littraux et les signes dusage gnral approuvs par la CEI, le lecteur consultera: - la CE 27: Symboles littraux utiliser en lectro-technique; - la CE1 417: Symboles graphiques utilisables sur le matriel. Index, relev et

7、compilation des feuilles individuelles; - la CE1 617: Symboles graphiques pour schmas; et pour les appareils lectromdicaux, - la CE1 878: Symboles graphiques pour quipements lectriques en pratique mdicale. Les symboles et signes contenus dans la prsente publi- cation ont t soit tirs de la CE1 27, de

8、 la CE1 417, de la CE1 617 etlou de la CE1 878, soit spcifiquement approuvs aux fins de cette publication. Publications de la CE1 tablies par le mme comit dtudes Lattention du lecteur est attire sur les listes figurant la fin de cette publication, qui numrent les publications de la CE1 prpares par l

9、e comit dtudes qui a tabli la prsente publication. Validity of this publication The technical content of IEC publications is kept under constant review by the IEC, thus ensuring that the content reflects current technology. Information relating to the date of the reconfirmation of the publication is

10、 available from the IEC Central Office. Information on the revision work, the issue of revised editions and amendments may be obtained from IEC National Committees and from the following IEC sources: IEC Bulletin IEC Yearbook Catalogue of IEC publications Published yearly Published yearly with regul

11、ar updates Terminology For general terminology, readers are referred to IEC 50: International Electrotechnical Vocabulary (I EV), which is issued in the form of separate chapters each dealing with a specific field. Full details of the IEV will be supplied on request. See also the IEC Multilingual Di

12、ctionary. The terms and definitions contained in the present publi- cation have either been taken from the IEV or have been specifically approved for the purpose of this publication. Graphical and letter symbols For graphical symbols, and letter symbols and signs approved by the IEC for general use,

13、 readers are referred to publications: - IEC 27: Letter symbols to be used in electrical technology; - IEC 417: Graphical symbols for use on equipment. Index, survey and compilation of the single sheets; - IEC 61 7: Graphical symbols for diagrams; and for medical electrical equipment, - equipment in

14、 medical practice. IEC 878: Graphical symbols for electromedical The symbols and signs contained in the present publication have either been taken from IEC 27, IEC 417, IEC 617 andlor IEC 878, or have been specifically approved for the purpose of this publication. IEC publications prepared by the sa

15、me technical committee The attention of readers is drawn to the end pages of this publication which list the IEC publications issued by the technical committee which has prepared the present publication. NORME INTERNATIONALE INTERNATIONAL STANDARD CE1 IEC 1 12012 Premire dition First edition 1991 -1

16、 o Systme denregistrement bande audio- numrique, bobine bobine, utilisant une bande magntique de 6,3 mm, usage professionnel Partie 2: Format A Digital audio tape recorder reel to reel system, using 6,3 mm magnetic tape, for professional use Part 2: Format A CU 1991 Droits de reproduction rservs- Co

17、pyright - all ngMS resewed Aucune partie de Cette publication ne peut tre reproduite ni utilise sous quelque forme que ce soit et par aucun procd, electronique ou mcanique, y compris la photocopie et les microfilms. sans raccord crit de lditeur. No part of this publication may be reproduced or utili

18、zed in any form or by any means, electronic or mechanical, including photocopying and miaofilm. without pennission in writing from the publisher Bureau central de ia Commission Electrotechnique Internationale 3. rue de Varemb Genve Suisse Commission Electrotechnique Internationale International Elec

19、trotechnical Commission MemtwiaponHa3nempoexrecna HOMHCCHR R CODE PRIX PRICE CODE Pour prix, voir catalogue en vigueur For price, see current catalogue -2- SOMMAIRE 1 120-2 O CE1 Pages AVANT-PROPOS . 4 Mdes 1 Enregistrement de la piste principale . 1.1 1.2 1.3 1.4 1.5 Mthode de modulation denregistr

20、ement . Structure du bloc de signaux . 1.2.1 Format du mot . 1.2.2 Structure des blocs 1.2.3 Profil de synchronisation . Rpartition des mots de signal sur les pistes Mthode de protection contre les erreurs 1.4.1 Code de correction derreurs 1.4.1.1 Codeur C2 . 1.4.1.2 Codeur C1 . 1.4.2 Squence dentre

21、lacement . Caractristiques denregistrement et lecture . 1 3.1 Bande de rfrence 1.5.2 Bandes magntiques talons . 1.5.3 Procdure de rglage du niveau et de la forme donde du courant denregistrement . 1.5.4 Spcifications de tolrances relatives la bande talon . 2 Enregistrement des sous-pistes . 2.1 Mtho

22、de denregistrement numrique Mthode denregistrement sur la sous-piste 2 2.1.1 2.2 Alignement des signaux lectroacoustiques numriques et de signaux des sous-pistes . 2.2.1 2.2.2 Alignement des signaux des pistes lectroacoustiques de reprage 1 Alignement du signal de la piste de code temporel et reprag

23、e 2 3 Mot de commande . 3.1 Configuration du mot de commande . 3.2 Rparation des donnes de commande 3.3 Adresse de bloc 3.4 Codeur C3 . 6 6 8 8 10 10 10 12 16 16 18 32 32 32 32 32 32 32 32 a 32 32 34 34 34 34 38 38 1120-2 O IEC -3- CONTENTS Page FOREWORD . 5 Clause 1 Main track recording . 7 1.1 Rec

24、ording modulation method 7 1 . 2 Signal block structure . 9 1.2.2 The block structure . 9 1.2.1 The word format 9 1.2.3 Synchronization pattern . 11 1.3 Signal word distribution to trade3 11 1 . 4 Error protection method . 11 1.4.1 The error correction code 13 1.4.1.1 C2Encoder 17 1.4.1.2 Clencoder

25、17 1.4.2 Interleave sequence . 19 1.5 Recording and reproducing characteristics . 1 5.1 Reference tape . 1.5.2 Calibration tapes . 1.5.3 Procedure for adjusting recording current level and waveform 33 33 33 33 1.5.4 Specifications of tolerance relative to calibration tape . 2 Sub-track recording 2.1

26、 Digital recording method Recording method on sub-track 2 2.1 -1 2.2 Alignment of digital audio signals and sub-track signals . 2.2.1 Alignment of we audio-l and cue audio-2 track signal . 2.2.2 Alignment of time code track signal . 3 Control word . , 3.1 Control word configuration 3.2 Control data

27、assignment 3.3 Block address 3.4 C3 Encoder . 33 33 33 33 35 35 35 35 39 39 -4- 1 120-2 O CE1 Rgles des Six Mois 6OA(BC)125 COMMISSION LECTROTECHNIQUE INTERNATIONALE Rapport de vote 6OA(BC)132 SYSTEME D?ENREGISTREMENT BANDE AUDIONUMERIQUE, BOBINE BOBINE, UTILISANT UNE BANDE MAGNTIQUE DE 6,3 mm, USAG

28、E PROFESSIONNEL Partie 2: Format A AVANT-PROPOS 1) Les dcisions ou accords officiels de la CE1 en ce qui concerne les questions techniques, prpars par des Comits d?Etudes o sont reprsents tous les Comits nationaux s?intressant ces questions, expriment dans la plus grande mesure possible un accord in

29、ternational sur les sujets examins. 2) Ces dcisions constituent des recommandations internationales et sont agres comme telles par les Comits nationaux. 3) Dans le but d?encourager l?unification internationale, la CE1 exprime le voeu que tous les Comits nationaux adoptent dans leurs rgles nationales

30、 le texte de la recommandation de la CEI, dans la mesure o les conditions nationales le permettent. Toute divergence entre la recommandation de la CE1 et la rgle nationale correspondante doit, dans la mesure du possible, tre indique en termes clairs dans cette dernire. La prsente partie de la CE1 11

31、20 a t tablie par le Sous-Comit 60A: Enregistrement sonore, du Comit d?Etudes no 60 de la CEI: Enregistrement. Cette partie est utiliser conjointement avec les parties 1 et 3 de cette norme. Le texte de cette partie est issu des documents suivants: Le rapport de vote indiqu dans le tableau ci-dessus

32、 donne toute information sur le vote ayant abouti l?approbation de cette partie. Les publications suivantes de la GEI sont cit4es dans ia pr4sente norme: Publications nos 11 20-1 : Systme d?enregistrement bande audionumrique, bobine bobine, utilisant une bande magntique de 6,3 mm, usage professionne

33、l - Premire partie: Gnralits. 1 120-3: Systme d?enregistrement bande audionumrique, bobine bobine, utilisant une bande magntique de 6,3 mm, usage professionnel - Troisime partie: Format B. 11 20-4: Systme d?enregistrement bande audionumrique, bobine bobine, utilisant une bande magntique de 6,3 mm, u

34、sage professionnel - Partie 4: Proprits des bandes magntiques: Dfinitions et mthodes de mesure. (A l?tude.) 1 120-2 O IEC -5- INTERNATIONAL ELECTROTECHNICAL COMMISSION DIGITAL AUDIO TAPE RECORDER REEL TO REEL SYSTEM, USING 6,3 mm MAGNETIC TAPE, FOR PROFESSIONAL USE Part 2: Format A FOREWORD 1) The f

35、ormal decisions or agreements of the IEC on technical matters, prepared by Technical Committees on which all the National Committees having a special interest therein are represented, express, as nearly as possible, an international consensus of opinion on the subjects dealt with. 2) They have the f

36、orm of recommendations for international use and they are accepted by the National Committees in that sense. 3) In order to promote international unification, the IEC expresses the wish that all National Committees should adopt the text of the IEC recommendation for their national rules in so far as

37、 national conditions will permit. Any divergence between the IEC recommendation and the corresponding national rules should, as far as possible, be clearly indicated in the latter. This part of IEC 1120 has been prepared by Sub-Committee 60A: Sound recording, of IEC Technical Committee No. 60: Recor

38、ding. This part should be used in conjunction with parts 1 and 3 of this standard. The text of this part is based on the following documents: Six Months Rule I Report on Voting Full information on the voting for the approval of this part can be found in the Voting Report indicated in the above table

39、 The following IEC publications are quoted in this standard: Publications Nos. 1120-1 : 11 20-3: 1 120-4: Digital Audio Tape Recorder reel to reel system, using 6,3 mm magnetic tape, for professional use - Part 1 : General requirements. Digital Audio Tape Recorder reel to reel system, using 6.3 mm

40、magnetic tape. for professional use - Part 3: Format B. Digital Audio Tape Recorder reel-to-reel system, using 6,3 mm magnetic tape, for professional use - Part 4: Magnetic tape properties: Definitions and methods of measurement. (Under consideration.) -6- 1120-2 O CE1 I Cellules , decode 1 converti

41、es YO00 SYSTME DENREGISTREMENT BANDE AUDIONUMRIQUE, BOBINE BOBINE, UTILISANT UNE BANDE MAGNTIQUE DE 6,3 mm, USAGE PROFESSIONNEL Partie 2: Format A Prescriptions lectriques pour les matriels denregistrement et de lecture. 1 Enregistrement de la piste principale 1 .1 Dans ce paragraphe, on dfinit dabo

42、rd la mthode par laquelle la squence de donnes binaires de chacune des 8 pistes numriques principales est convertie en vue de son enre- gistrement sur la bande magntique. On dcrit ensuite, en 1.2.3, la dfinition du profil de synchronisation en code denregistrement. Le code converti est donn par NRZI

43、 Mthode de modulation denregistrement Le systme 2/4 M est dfini en divisant la squence de donnes binaires en tronons de 2 bits et en les convertissant en code de quatre cellules en dtectant les donnes dans les quatre bits prcdents et contigus ces donnes de 2 bits et galement dans les quatre bits le

44、ur faisant suite. Le systme utilise les donnes ainsi dtectes pour convertir les donnes sur 2 bits en code quatre cellules faisant apparatre pas moins de deux et pas plus de sept cellules de code “O“ entre deux cellules de code “1“ dune squence de code converti quelconque. La rgle de conversion est d

45、onne par le tableau suivant: Tableau de conversion 2/4 M Bits de onnes nitiaux 11 o1 10 10 10 10 10 O010 O100 O001 O000 0100 YO01 O0 O0 O0 O0 O000 O001 O000 o1 O0 Contenu Sans conditions “E, E,“ # “1 O“ et “L, L,“ = “00“ “E, E,“ = “10“ et “L, L,“ = “00“ “E, E,“ = “1 O“, “L, L,“ I “1 O“ et “L L “ = “

46、00“ 34 “E, E,“ # “lo“, “L, L,“ I “10“ et “I, L4“ = “00“ A lexception de ce qui prcde E4 E,“# “lo“, “E, E,“ = “10“et “L, L,“# “01“ E4 E,“ + “lo“, “E, E,“ = “10“ et “L, L,“ = “01“ E4 E,“ = “10“ et “E2 E,“ = “1 O“ A lexception de ce qui prcde OU: E, L, Y I bits de donnes prcds par n-bits, sous forme de

47、 donnes de 2 bits convertir en squence de donnes initiales E bits de donnes suivis par n-bits. sous forme de donnes de 2 bits convertir en squence de donnes initiales = logique de complment de la somme logique de deux cellules situes immdiatement avant le bit de code Y dans la squence de code conver

48、ti Le code converti est donn par NRZI. 1 1 20-2 O IEC O100 O001 O000 O100 YO01 O000 O001 O000 o1 O0 . -7- “E, E,“ # “1 O“ and “L, L,“ = “00“ “E, E,“ = “1 O“ and “L, L,“ t “00“ “E, E,“ = “1 O“, “L, L,“ x “1 O“ and “L, L,“ = “00“ “E, E,“ # “lo“, “L, L,“ E “10“ and “L, L,“ = “00“ Except the foregoing E, E,“ z “lo“, “E, E,“ = “1 O“ and “L, L,“ # “01“ E, E,“ # “lo“, “E, E,“ = “10“ and “L, L,“ = “01“ E, E,“ = “1 O“ and “E, E,“ = “1 O“ Except the foregoing DIGITAL AUDIO TAPE RECORDER REEL TO REEL SYSTEM, USING 6,3 mm MAGNETIC TAPE, FOR PROFESSIONAL USE Part 2: Form

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