NF EN 61119-1 : 1994

Cooperating organizations
National foreword
Foreword
Introduction
1. Scope and object
2. Normative references
3. Description of the system
4. Test conditions
5. 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 Accidental erasure prevention (AEP)
5.1.6 Recognition holes
5.1.7 Cassette holding area
5.1.8 Groove for loading grip
5.1.9 Tape begin/end detection
5.1.10 Lid
5.1.11 Slider locks
5.1.12 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
6. Track configuration and patterns
6.1 Track configuration
6.1.1 Tape speed and number of tracks per second
6.1.2 Track angle
6.1.3 Track pitch
6.1.4 Track length
6.1.5 Track centre
6.1.6 Head azimuth
6.1.7 Effective recording width
6.1.8 Definition of frame
6.1.9 Optional tracks
6.2 Signal allocation
6.2.1 Recording format of track
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 Automatic track finding (ATF), main data area
        and sub data area
7. Recording parameters
7.1 Recording level
7.1.1 Specification
7.1.2 Measurement method
7.2 Erasing method
8. Tracking scheme
8.1 Automatic track finding (ATF)
8.1.1 Definition
8.1.2 ATF signal allocation
8.1.3 Recording signal
9. Main data area format
9.1 Main data block format
9.1.1 Synchronization pattern
9.1.2 Main ID (W1, W2)
9.1.3 Main ID parity
9.1.4 Main data
9.2 Main data configuration
9.2.1 Main data allocation
9.2.2 Recording direction
9.3 Error correction and detection code (C1, C2)
9.3.1 Definition
9.3.2 Error correction code interleaving format
9.3.3 Parity symbol
9.4 Modulation
9.4.1 Parameters
9.4.2 Modulation method
10. Sub data area format
10.1 Sub data block format
10.1.1 Synchronization pattern
10.1.2 Sub ID (SW1, SW2)
10.1.3 Sub ID parity
10.1.4 Sub data
10.2 Sub data configuration
10.2.1 Sub data allocation
10.2.2 Recording direction
10.3 Error correction and detection code (SP)
10.3.1 Definition
10.3.2 Error correction code interleaving format
10.3.3 Parity symbol
10.4 Modulation
11. Audio encoding
11.1 Mode application
11.1.1 Audio encoding mode
11.1.2 System application
11.2 Source encoding
11.2.1 Emphasis
11.2.2 Number of audio channels
11.2.3 Sampling frequency
11.2.4 Sampling timing
11.2.5 Quantization
11.3 Word to symbol conversion
11.3.1 Audio data word
11.3.2 48k mode, 44k mode, 44k-WT mode and 32k mode
11.3.3 32k-LP mode
11.3.4 32k-4CH mode
11.4 Interleave format
11.4.1 48k mode, 44k mode, 44k-WT mode and 32k mode
11.4.2 32k-LP mode
11.4.3 32k-4CH mode
12. Sub code encoding for audio use
12.1 Sub code in main ID
12.1.1 ID1 to ID7
12.2 Sub code in sub ID
12.2.1 Configuration of sub ID
12.3 Sub code in sub data
12.3.1 Pack ID and pack location
12.3.2 Configuration of pack
12.3.3 Assignment of pack item
12.4 Sub code in main data
12.4.1 Recognition word for compact disk (CD) sub code
12.4.2 Sub code for CD format
12.5 Application rules of sub code for pre-recorded tape
12.5.1 Classification of sub code recording
12.5.2 Areas along tape longitude
12.5.3 Location of pack
12.5.4 Classification of catalog number and ISRC
        recording
12.5.5 TOC recording
12.6 Application rules of sub code for own-recorded tape
12.6.1 Classification of sub code recording
12.6.2 Recording function of sub code
12.6.3 Areas along tape longitude
12.6.4 Location of time code pack
12.6.5 Details for recording sub code
12.6.6 Rules of assemble-recording
12.7 Application rules in playback situation
12.7.1 Detection of identification code
12.7.2 Mechanical conditions
12.7.3 Shortening play
12.7.4 Display
12.7.5 Rules of searching
12.7.6 Beginning point of playback after searching
Annexes
A. (normative) Transmissivity of the prism
B. (normative) Measurement method of the force required
   to open the slider
C. (informative) Abbreviations
D. (informative) Explanations
ZA. (normative) Other international publications quoted
   in this standard with the references of the relevant
   European publications

Defines the parameters that affect the compatibility between cassettes and the associated tape recorders. Applies to the digital audio tape (DAT) cassette system that records and/or plays back digital information such as PCM encoded audio and/other data. Coverage includes: mechanical parameters, track configuration, recording parameters, tracking scheme, main data area format, modulation, audio encoding, interleave format, and sub code encoding for audio use.