IEC 61120-4-1992 Digital audio tape recorder reel-to-reel system using 6 3 mm magnetic tape for professional use part 4 magnetic tape properties definitions and.pdf

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1、NORME INTERNATIONALE INTERNATIONAL STANDARD CE1 IEC 11 20-4 Premire dition First edition 1992-06 Systme denregistrement bande audionumrique, bobine bobine, utilisant une bande magntique de 6,3 mm, usage professionnel Partie 4: Proprits des bandes magntiques: dfinitions et mthodes de mesure Digital a

2、udio 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 Numro de rfrence Reference number CEIIIEC 11 20-4: 1992 Validit de la prsente publication Le contenu technique des publications de la CE1

3、est cons- tamment revu par la CE1 afin quil reflte ltat actuel de la technique. Des renseignements relatifs 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

4、peuvent tre obtenus auprs des Comits nationaux de la CE1 et dans les documents ci-dessous: Bulletin de la 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 re

5、portera la CE1 50: Vocabulaire Electrotechnique Inter- national (VEI), qui se prsente sous forme de chapitres 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

6、dans la prsente publi- cation ont t soit tirs du VEI, soit spcifiquement approuvs aux fins de cette publication. Symboles graphiques et littraux Pour les symboles graphiques, les symboles littraux et les signes dusage gnral approuvs par la CEI, le lecteur consultera: - la CE1 27: Symboles littraux u

7、tiliser en lectro-technique; - la CE1 417: Symboles graphiques utilisables sur le matriel. Index, relev et compilation des feuilles individuelles; - la CE1 61 7: Symboles graphiques pour schmas; et pour les appareils lectromdicaux, - la CE1 878: Symboles graphiques pour quipements lectriques en prat

8、ique mdicale. Les symboles et signes contenus dans la prsente publi- cation ont t soit tirs de la CE1 27, de la CE1 417, de la CE1 617 et/ou 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 atti

9、re sur les listes figurant la fin de cette publication, qui numrent les publications de la CE1 prpares par le 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 conte

10、nt reflects current technology. Information relating to the date of the reconfirmation of the publication is 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 s

11、ources: IEC Bulletin IEC Yearbook Catalogue of IEC publications Published yearly Published yearly with regular 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

12、with a specific field. Full details of the IEV will be supplied on request. See also the IEC Multilingual Dictionary. 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

13、 and letter symbols For graphical symbols, and letter symbols and signs approved by the IEC for general use, 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 sin

14、gle sheets; - IEC 61 7: Graphical symbols for diagrams; and for medical electrical equipment, - equipment in 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 and/or IEC 878,

15、 or have been specifically approved for the purpose of this publication. IEC publications prepared by the same 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 p

16、ublication. NORME INTERNATIONALE INTERNATIONAL STANDARD CE1 IEC 11 20-4 Premire dition First edition 1992-06 Systme d?enregistrement bande audionumrique, bobine bobine, utilisant une bande magntique de 6,3 mm, usage professionnel Partie 4: Proprits des bandes magntiques: dfinitions et mthodes de mes

17、ure 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 measure ment 0 CE1 1992 Droits de reproduction rservs - Copyright - all fights reserved Aucune partie de cette publication ne peut tre re

18、produite ni utilise sous quelque forme que ce soit et par aucun procd. lectronique ou mcanique, y compris la photocopie et les microfilms. sans l?accord crit de l?diteur. No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical. including photoc

19、opying and miuofilm, without pemission in writing from the publisher Bureau central de la Commission Eledrotechnique Internationale 3, rue de Varemb Genve Suisse -2- SOMMAIRE 1 120-4 O CE1 Pages AVANT-PROPOS . 4 Articles Domaine dapplication . 6 Rfrences normatives . 6 Dfinitions 8 3.1 3.2 3.3 3.4 3

20、.5 3.6 3.7 3.8 3.9 3.1 O Transitions de flux 8 Densit denregistrement physique 8 Forme donde du courant denregistrement . 8 8 Densit dessai . 8 Valeur de crte crte du courant denregistrement . Courant denregistrement recommand . 8 Courant denregistrement dessai . 10 Courant denregistrement de rfrenc

21、e . 10 Niveau moyen de signal . 10 Niveau normal de rfrence . 10 Exigences techniques et conditions dessai 4.1 Conditions atmosphriques normales 11 4.2 Caractristiques mcaniques du matriel dessai 11 4.3 Caractristiques lectriques du matriel dessai 13 4.4 Bandes de rfrence . 13 11 4.5 Etat de la band

22、e a soumettre a lessai . 15 Paramtres lectriques mesurer 5.1 Rsolution . 15 5.2 Caractristique de surimpression . 17 5.3 Pertes de niveau 17 5.4 Rapport niveau de signalbruit moyen relatif 17 Caractristiques des sous-pistes en cas denregistrement de polarisation 15 5.5 17 Paramtres recommands dcrire

23、 dans les publications relatives aux bandes audionumriques usage professionnel . 19 Paramtres mcaniques mesurer 19 Figures . 20 Annexe A - Nom et adresse du fabricant de bande de reference talons primaires de la CE1 . 24 1120-4 0 IEC -3- CONTENTS Page FOREWORD 5 Clause 1 Scope . 7 . 2 Normative refe

24、rences / 3 Definitions 3.1 Flux transitions . 3.2 Physical recording density 3.3 Test density 3.4 Recording current wave form . 3.5 Recording current peak-to-peak value . 3.6 Recommended recording current . 3.8 Test recording current . 3.9 Average signal level . 3.1 O Standard reference level 3.7 Re

25、ference recording current . 9 9 9 9 9 9 9 11 11 11 11 4 Technical requirements and test conditions 11 4.1 Standard atmospheric conditions . 11 4.2 Mechanical characteristics of test equipment . 11 4.3 Electrical characteristics of test equipment . 13 4.4 Reference tapes 13 4.5 Condition of the tape

26、to be tested . 15 5 Electrical parameters to be measured 15 5.2 Overwrite characteristic 17 5.3 Drop-outs . 17 Relative average signal level to noise ratio . 17 5.1 Resolution . 15 5.4 5.5 Characteristics of the sub-tracks in case of bias-recording 17 6 Recommended parameters to be described in publ

27、ished data for professional digital audio tapes 19 Mechanical parameters to be measured 19 7 Figures . 21 Annex A . Name and address of the manufacturer of primary standard IEC reference tapes 25 -4- 1 120-4 O CE1 DIS 6A(BC)139 COMMISSION LECTROTECHNIQUE INTERNATIONALE Rapport de vote 6OA(BC)147 SYS

28、TME DENREGISTREMENT BANDE AUDIONUMRIQUE, BOBINE BOBINE, UTILISANT UNE BANDE MAGNTIQUE DE 6,3 mm, USAGE PROFESSIONNEL Partie 4: Proprits des bandes magntiques: dfinitions et mthodes de mesure AVANT-PROPOS 1) Les dcisions ou accords officiels de la CE1 en ce qui concerne les questions techniques, prpa

29、rs par des Comits dEtudes o sont reprsents tous les Comits nationaux cintressant ces questions, expriment dans la plus grande mesure possible un accord international sur les sujets examins. 2) Ces dcisions constituent des recommandations internationales et sont agres comme telles par les Comits nati

30、onaux. 3) Dans le but dencourager lunification internationale, la CE1 exprime le voeu que tous les Comits nationaux adoptent dans leurs regles nationales le texte de la recommandation de la CEI, dans la mesure O les conditions nationales le permettent. Toute divergence entre la recommandation de la

31、CE1 et la rgle nationale correspondante doit, dans la mesure du possible, tre indique en termes clairs dans cette dernire. La prsente publication a t tablie par le Sous-Comit 60A: Enregistrement sonore, du Comit dEtudes no 60 de la CEI: Enregistrement. Le texte de cette partie est issu des documents

32、 suivants: Les rapports de vote indiqus dans le tableau ci-dessus donnent toute information sur le vote ayant abouti lapprobation de cette publication. 1120-4OIEC -5- DIS SOA(C0)139 INTERNATIONAL ELECTROTECHNICAL COMMISSION Report on Voting 60A(C0)147 DIGITAL AUDIO TAPE RECORDER REEL-TO-REEL SYSTEM,

33、 USING 6,3 mm MAGNETIC TAPE, FOR PROFESSIONAL USE Part 4: Magnetic tape properties: definitions and methods of measurement FOREWORD 1) The formal decisions or agreements of the IEC on technical matters, prepared by Technical Committees on which all the National Committees having a special interest t

34、herein are represented, express, as nearly as possible, an international consensus of opinion on the subjects dealt with. 2) They have the form of recommendations for international use and they are accepted by the National Committees in that sense. 3) In order to promote international unification, t

35、he IEC expresses the wish that all National Committees should adopt the text of the IEC recommendation for their national rules in so far as national conditions will permit. Any divergence between the IEC recommendation and the corresponding national rules should, as far as possible, be clearly indi

36、cated in the latter. This standard has been prepared by Sub-Committee 60A: Sound recording, of IEC Technical Committee No. 60: Recording. The text of this part is based on the following documents: 1 I 1 Full information on the voting for the approval of this standard can be found in the Voting Repor

37、t indicated in the above table. -6- 1 120-4 O CE1 SYSTME DENREGISTREMENT BANDE AUDIONUMRIQUE, BOBINE BOBINE, UTILISANT UNE BANDE MAGNTIQUE DE 6,3 mm, USAGE PROFESSIONNEL Partie 4: Proprits des bandes magntiques: dfinitions et mthodes de mesure 1 Domaine dapplication La prsente partie de la CE1 1120

38、sapplique aux mthodes de mesure relatives aux proprits des bandes magntiques utilises dans les systmes denregistrement et de lecture audionumriques, bobine a bobine, utilisant une bande magntique de 6,3 mm a usage professionnel. 2 Rfrences normatives Les normes suivantes contiennent des dispositions

39、 qui, par suite de la rfrence qui y est faite, constituent des dispositions valables pour la prsente partie de la CE1 1120. Au moment de la publication, les ditions indiques taient en vigueur. Toute norme est sujette rvision et les parties prenantes aux accords fonds sur la prsente partie de ia CE1

40、1120 sont invites a rechercher la possibilit dappliquer les ditions les plus rcentes des normes indiques ci-aprs. Les membres de la CE1 et de IISO possdent le registre des Normes internationales en vigueur. CE1 50(806): 1975, Vocabulaire Electrotechnique International (VEI) - Chapitre 806: Enre- gis

41、trement et lecture du son et des images. CE1 94-4: 1986, Systemes denregistrement et de lecture du son sur bandes magn- tiques - Partie 4: Proprits mcaniques des bandes magntiques. CE1 94-5: 1988, Systemes denregistrement et de lecture du son sur bandes magn- tiques - Partie 5: Proprits lectriques d

42、es bandes magntiques. CE 386: 1972, Mthode de mesure des fluctuations de vitesse des appareils destins a lenregistrement et la lecture du son. Modification no 1 (1988). CE1 1120-1 : 1991, Systeme denregistrement bande audionumrique, bobine a bobine, utilisant une bande magntique de 6,3 mm, a usage p

43、rofessionnel - Partie I: Gnralits. CE1 1 120-2: 1991, Systme denregistrement 2 bande audionumrique, bobine bobine, utilisant une bande magntique de 6,3 mm, usage professionnel - Partie 2: Format A. CE1 1120-3: 1991, Systme denregistrement bande audionumrique, bobine bobine, utilisant une bande magnt

44、ique de 6,3 mm, usage professionnel - Partie 3: Format B. CE1 1 120-5: 199x, Systeme denregistrement bande audionumrique, bobine bobine, utilisant une bande magnetique de 6,3 mm, a usage professionnel - Partie 5: Bobines. 1 1 20-4 O I EC -7- DIGITAL AUDIO TAPE RECORDER REEL-TO-REEL SYSTEM, USING 6,3

45、 mm MAGNETIC TAPE, FOR PROFESSIONAL USE Part 4: Magnetic tape properties: definitions and methods of measurement i Scope This part of IEC 1120 applies to methods of measurement for the properties of magnetic tapes used in digital audio reel-to-reel recording and reproducing systems using 6,3 mm magn

46、etic tape for professional use. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this part of IEC 1120. At the time of publication of this standard, the editions indicated were valid. Ali standards are subject to revisi

47、on, and parties to agreements based on this part of IEC 1120 are encouraged to investigate the possibility of applying the most recent editions of the standards listed below. Members of IEC and IS0 maintain registers of currently valid International Standards. 1 EC 50(806) : 1975, International Elec

48、trotechnical Vocabulary (IEV) - Chapter 806: Recording and reproduction of sound and video. IEC 94-4: 1986, Magnetic tape sound recording and reproducing systems - Part 4: Mechanical magnetic tape properties. IEC 94-5: 1988, Magnetic tape sound recording and reproducing systems - Part 5: Elec- trical magnetic tape properties. IEC 386: 1972, Method of measurement of speed fluctuations in sound recording and reproducing equipment, Amendment No. I (1988). IEC 1 120-1 : 1991, Digital audio tape recorder reel-to-reel system, using 6,3 mm magnetic tap

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