1、Digital audio tape cassette system (DAT) Part 1. Dimensions and characteristics The European Standard EN 61119-1 : 1994 has the status of a British Standard UDC 621.396.7 : 681.84.083.84 : 681.32 BS EN 61119-1 : 1994 IEC 1119-1 : 1992 W 3404583 Olt45908 Li12 W BS EN 61119-1 : 1994 Cooperating organi
2、zations The European Committee for Electrotechnical Standardization (CENELEC), under whose supervision this European Standard was prepared, comprises the national committees of the following countries: Austria Belgium Denmark Finland France Germany Greece Iceland Ireland Italy Luxembourg Netherlands
3、 Norway Portugal Spain Sweden Switzerland United Kingdom This British Standard, having been prepared under the direction of the Electrotechnical Sector Board, was published under the authority of the Standards Board and comes into effect on 15 November 1994 O BSI 1994 “he following BSI references re
4、late to the work on this standard: Committee reference EEU22 Draft for comment 88/30302 DC ISBN O 680 23627 O Amendments issued since publication kxt affected - W 3404583 0145707 059 = BS EN 61119-1 : 1994 Contents Page Cooperating organizations Inside front cover National foreword i Foreword 2 Ext
5、of EN 61119-1 3 National annex NA (informative) Committees responsible Inside back cover National annex NB (informative) Cross-references Inside back cover National foreword This British Standard has been prepared under the direction of the Electrotechnical Sector Board and is the English language v
6、ersion of EN 61119-1 : 1994 Digital audio tupe cussette system (DM) Purt 1: Dimensions and chu?-actw-iStics, published by the European Committee for Electrotechnical Standardization (CENELEC). It is identical with IEC 1119-1 : 1992, published by the International Electrotechnical Commission BS EN 61
7、119 consists of the following Parts: Part 1 Dimensions and churacteristics Part 2 DAT calibration tupe Part 3 DAT tupe properties Part 4 Chuyactw pack fmwzatl) Part 5 DAT fix professional use Part 6 Swial copy managerneni systems) Part 7 DAT logo upplication rule1) (Iw. References in the text to IEC
8、 page numbers should be ignored. Compliance with a British Standard does not of itself confer immunity from legal obligations. i) In preparation. i W 3404583 OlI45910 870 = EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 61119-1 July 1994 UDC 621.396.7: 681.84.083.84 681.32 Descriptors: Sound r
9、ecording, digital recording, data recording devices, audiocassettes, magnetic tapes, track formats, dimensions, characteristics English version Digital audio tape cassette system (DAT) Part 1 : Dimensions and characteristics (IEC 1119-1 : 1992 ) Systme audionumrique cassette (DAT) Partie 1: Dimensio
10、ns et caractristiques Digitales Tonband-Kassetten-System Teil 1: Mape und Kennwerte (CE1 1119-1 : 1992) (IEC 1119-1 1992) This European Standard was approved by CENELEC on 1994-05-15. CENELEC members are bound to comply with the CENICENELEC Internal Regulations which stipulate the conditions for giv
11、ing this European Standard the status of a 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
12、versions (English, French, German). A version 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 committee
13、s of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europis
14、ches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B-1050 Brussels O 1994 Copyright reserved to CENELEC members - - -_ _ - Ref. No. EN 61119-1 : 1994 E Previous page is blank = 3404583 OL459LL 707 Page 2 EN 61119-1 : 1994 Foreword The CENELEC questionnaire procedure,
15、performed for finding out whether or not the International Standard IEC 1119-1 : 1992 could be accepted without textual changes, has shown that no common modifications were necessary for the acceptance as European Standard. The reference document was submitted to the CENELEC members for formal vote
16、and was approved by CENELEC as EN 61119-1 on 15 May 1994. The following dates were fixed: - latest date of publication of an identical national standard (dop) 1995-03-16 - latest date of withdrawal of conflicting national standards (dow) 1995-03-15 Annexes designated normative are part of the body o
17、f the standard. Annexes designated informative are given only for information. In this standard, annexes A, B and ZA are normative and annexes C and D are informative. = 3404583 Ol145l12 643 Page 3 EN 61119-1 : 1994 CONTENTS Page INTRODUCTION . Clause 1 2 3 4 5 6 Scope and object Normative reference
18、s . Description of the system Test conditions Mechanical parameters 5.1 Cassette 5.1.1 Dimensions and tolerances . 5.1.2 Outside view . 5.1.3 Label area . 5.1.4 Window 5.1.5 5.1.6 Recognition holes . 5.1.7 Cassette holding area 5.1.8 5.1.9 Tape begin/end detection 5.1.10 Lid 5.1.1 1 Slider locks . 5
19、.1.12 Hub . 5.2 Tape . 5.2.1 Magnetic tape . 5.2.2 Leader and trailer tapes 5.2.3 Tape winding 5.2.4 Single hub friction torque Accidental erasure prevention (AEP) Groove for loading grip Track configuration and patterns 6.1 Track configuration Tape speed and number of tracks per second . 6.1.1 6.1.
20、2 Track angle . 6.1.3 Track pitch 6.1.4 Track length 6.1.5 Track centre 6.1.6 Head azimuth 6.1.8 Definition of frame 6.1.7 Effective recording width . 6.1.9 Optional tracks . 7 8 8 9 9 9 9 9 10 10 10 10 11 11 11 11 12 12 13 13 13 13 13 13 24 24 24 24 24 24 24 24 24 24 25 - = 3404583 0145913 58T Page
21、 4 EN 61119-1 : 1994 Clause Page 7 8 9 10 6.2 Signal allocation . 6.2.1 6.2.2 Positioning accuracy 6.3 Recording signals . 6.3.1 Inter-block gap (IBG) . 6.3.2 Preamble, postamble and margin 6.3.3 Recording format of track Automatic track finding (ATF), main data area and sub data area Recording para
22、meters 7.1 Recording level . 7.1.2 Measurement method 7.2 Erasing method . Tracking scheme . 8.1 Automatic track finding (ATF) . 8.1.1 Definition . 8.1.2 ATF signal allocation . 8.1.3 Recording signal Main data area format 7.1.1 Specification . 9.1 9.2 9.3 9.4 Main data block format 9.1.1 Synchroniz
23、ation pattern 9.1.2 Main ID (Wl. W2) . 9.1.3 Main ID parity . 9.1.4 Main data Main data configuration . 9.2.1 Main data allocation . 9.2.2 Recording direction Error correction and detection code (C1 . C2) . 9.3.1 Definition . 9.3.2 9.3.3 Parity symbol Modulation 9.4.1 Parameters 9.4.2 Modulation met
24、hod . Error correction code interleaving format . 26 26 26 26 27 27 27 27 27 27 27 28 28 28 28 29 29 33 33 33 34 35 35 35 36 37 37 37 38 39 40 40 40 Sub data area format 47 10.1 Sub data block format 47 10.1 . 1 Synchronization pattern 47 10.1.2 Sub ID (SW1. SW2) . 47 10.1.3 Sub ID parity . 48 10.1.
25、4 Sub data 48 m 3404583 0145914 4Lb m Page 5 EN 61119-1 : 1994 Clause Page 10.2 Sub data configuration 48 10.2.1 Sub data allocation 49 10.2.2 Recording direction 50 10.3 Error correction and detection code (SP) . 50 10.3.1 Definition . 51 10.3.2 Error correction code interleaving format . 52 10.3.3
26、 Parity symbol 53 10.4 Modulation 53 11 Audio encoding 53 11.1 Mode application . 53 11.1.1 Audio encoding mode 54 i i . i . 2 System application . 54 11.2 Source encoding 54 11.2.1 Emphasis . 54 11.2.2 Number of audio channels . 54 11.2.3 Sampling frequency . 55 11.2.4 Sampling timing 55 11.2.5 Qua
27、ntization 56 11.3 Word to symbol conversion 57 11.3.1 Audio data word . 57 11.3.2 48k mode. 44k mode. 44k-WT mode and 32k mode . 57 11.3.3 32k-LP mode . 57 11.3.4 32k-4CH mode 58 11.4 Interleave format 58 11.4.1 59 11.4.2 32k-LP mode . 59 11.4.3 32k-4CH mode 60 48k mode. 44k mode. 44k-WT mode and 32
28、k mode . 12 Sub code encoding for audio use 66 12.1 12.2 12.3 12.4 Sub code in main ID 66 12.1.1 ID1 to ID7 66 Sub code in sub ID 69 12.2.1 Configuration of sub ID 69 Sub code in sub data . 70 12.3.1 Pack ID and pack location . 70 12.3.2 Configuration of pack . 72 12.3.3 Assignment of pack item . 73
29、 Sub code in main data . 80 12.4.1 Recognition word for compact disk (CD) sub code . 80 12.4.2 Sub code for CD format . 80 . 3Lt04583 0145915 352 Page 6 EN 61119-1 : 1994 Clause 12.5 12.6 12.7 Page Application rules of sub code for pre-recorded tape 12.5.1 Classification of sub code recording 83 83
30、12.5.2 Areas along tape longitude 83 12.5.3 Location of pack 84 12.5.4 Classification of catalog number and ISRC recording . 85 12.5.5 TOC recording . 85 Application rules of sub code for own-recorded tape 87 12.6.1 Classification of sub code recording 87 12.6.2 Recording function of sub code . 87 1
31、2.6.3 Areas along tape longitude 88 12.6.4 Location of time code pack 92 12.6.5 Details for recording sub code . 92 12.6.6 Rules of assemble-recording . 98 Application rules in playback situation . 98 12.7.1 Detection of identification code 98 12.7.2 Mechanical condition . 98 12.7.3 Shortening play
32、98 12.7.4 Display . 98 12.7.5 Rules of searching . 102 12.7.6 Beginning point of playback after searching 103 Annexes A (normative) Transmissivity of the prism 104 B (normative) Measurement method of the force required to open the slider 105 C (informative) Abbreviations 106 D (informative) Explanat
33、ions 107 ZA (normative) Other international publications quoted in this standard with the references of the relevant European publications . -1 12 Page 7 EN 61119-1 : 1994 INTRODUCTION The IEC draws attention to the fact that it is probable that the specifications contained in this standard are the
34、subject of one or more patents. The IEC has no precise information on the holders of such patents and cannot supply fur- ther details, but it is expected that the holders of such patents will be prepared to grant licences under reasonable and non-discriminatory terms. - 3404583 0145917 125 Page 8 EN
35、 61119-1 : 1994 DIGITAL AUDIO TAPE CASSETTE SYSTEM (DAT) Part 1 : Dimensi0n.s and characteristics 1 Scope and object This pari of IEC 1119 is applicable to the digital audio tape (DAT) cassette system that records and/or plays back digital information such as PCM encoded audio and/or other data. Thi
36、s pari defines those parameters that affect the compatibility between cassettes and the associated tape recorders. It is also intended as a reference for manufacturers producing cassettes and/or tape recorders which are intended to conform with the system described in this part. 2 Normative referenc
37、es The following normative documents contain provisions which, through reference in this text, constitute provisions of this part of IEC 11 19. 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
38、 of IEC 11 19 are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. Members of IEC and IS0 maintain registers of currently valid International Standards. IEC 268-11: 1987, Sound system equipment - Part 11: Application of connec
39、tors for the interconnection of sound system components IEC 268-12: 1987, Sound system equipment - Part 12: Application of connectors for broadcast and similar use IEC 268-15: 1987, Sound system equipment - Part 15: Preferred matching values for the interconnection of sound system components IEC 958
40、: 1989, Digital audio interface IEC 11 19-2: 1991 , Digital audio tape cassette system (DAT) - Part 2: DAT calibration tape IEC 11 19-3: 1992, Digital audio tape cassette system (OAT) - Fart 3: DAT tape propeflies IEC 11 19-4: 199x, Digital audio tape cassette system (OAT) - Part 4: Method of rneasu
41、re- ment for DAT recorder (under consideration) 3404583 01145938 Ob11 Page 9 EN 61119-1 : 1994 IEC 11 19-5: 199x, Digital audio tape cassette system (DAT) - Pari 5: DAT for professional us e (under considera tio n) IS0 3901 : 1986, Documentation - International standard recording code (ISRC) 3 Descr
42、iption of the system The information carrier is a magnetic tape of 3,81 mm width wound on flangeless hubs which are located in a cassette containing a slider and a lid to protect the tape from accidental damages. The tape is of the metal powder type or its equivalent. The digital information is reco
43、rded using the helical scanning principle and can be erased by over- writing. The digital information is read by magnetic heads using an automatic track finding (ATF) scheme to find and follow tracks. Two track widths and three tape speeds are defined. It is possible to record sub code information i
44、n a main data area, either with or without audio signals. 4 Test conditions Tests and measurements made on the system to verify conformity with the provisions of this part of IEC 11 19 shall be carried out under the following conditions: - Temperature: 20 “C f 2 “C - Relative humidity: 40 % to 60 Yo
45、 - Barometric pressure: 86 kPa to 106 kPa - Conditioning before testing: 24 h 5 Mechanical parameters 5.1 Cassette 5.1 .I Dimensions and tolerances The cassette dimensions and tolerances are specified in figures 2 to 11 on pages 29 to 43. In these figures, use is made of reference datum planes which
46、 are presented in figure 7, page 39. The Z-datum plane is defined by the datum areas A, B and C. The X-datum plane is defined through the centres of the positioning holes in the datum areas A and B, perpen- dicular to plane 2. The Y-datum is defined through the centre of the positioning hole in area
47、 A, perpendicular to planes 2 and X. W 3404583 0145919 TT8 Possible to record Indication- window AEP hole Closed O“ Closed O Page 10 EN 61119-1 : 1994 Impossible to record Indication- window AEP hole Open 1“ Open “1 Tolerances which are not specified in these figures shall be as in the following tab
48、le: Tolerance Length: L (mm) 30 TL 6 I0.2 L 30 i0.3 Angle (O) kl 5.1.2 Outside view The outside view is shown in figure 1 on page 27. 5.1.3 Label area The hatched area given in figure 12 on page 45 is available for the labels of pre-recorded cassettes. 5.1.4 Window The window shall be positioned wit
49、hin the label area. 5.1.5 Accidental erasure prevention (AEP) 5.1.5.1 Accidental erasure prevention hole The cassette shall be provided with an accidental erasure prevention hole as shown in figure 1 and in accordance with the table in 5.1.5.2. If an accidental erasure prevention tag is provided, the tag shall be so constructed that it can withstand an applied force of 0,5 N. 5.1.5.2 Operation scheme and indication of accidental erasure prevention Accidental erasure prevention may be indicated by a moving part, the colour of which shall not be red. The oper
