NF EN 61595-1 : 1997

1 Scope
2 Normative references
3 Definitions
    3.1 Data flow of a digital audio tape recorder
4 Digital encoding
    4.1 Sampling frequency
    4.2 Sampling timing
    4.3 Quantization
5 Tape speed
6 Tape width and number of digital audio channels
7 Tape winding
8 Reel and hub
9 Allocation and dimension of magnetic tracks
10 Assignment of magnetic tracks
11 Emphasis
12 Main track recording
    12.1 Recording modulation method
    12.2 Signal block structure
          12.2.1 The word format
          12.2.2 The frame and block structure
          12.2.3 Synchronization pattern
    12.3 Signal word distribution to tracks
    12.4 Error protection method
          12.4.1 The error correction code
          12.4.2 Interleave sequence
    12.5 Recording and reproducing characteristics
          12.5.1 Reference tape
13 Subtrack recording
    13.1 Auxiliary channels
          13.1.1 Time code channel (time code track)
          13.1.2 Auxiliary data channel (auxiliary data track)
          13.1.3 Auxiliary analogue channels (cue audio-1
                  track and cue audio-2 track)
    13.2 Alignment of digital audio signals and subtrack
          signals
          13.2.1 Alignment of cue audio-1 and cue audio-2
                  track signals
          13.2.2 Alignment of time code track signals
Annex A - Bibliography
Tables
1 Tape width and number of digital audio channels
2 Track assignment
3 4/6M conversion table
4 Track interleave (20 main tracks with 12.7 mm tape
    width
5 Track interleave (40 main tracks with 12.7 mm tape
    width
6 Track interleave (40 main tracks with 25.4 mm tape
    width
7 Track interleave (80 main tracks with 25.4 mm tape
    width)
Figures
1 Recording channels of a DATR (digital audio tape recorder)
2 Data flow of the main audio channels of a DATR (digital
    audio tape recorder)
3 Reproducing channels of a DATR (digital audio tape
    recorder
4 Track pattern for DATR on magnetic tape (24 tracks with
    12.7 mm tape width)
5 Track pattern for DATR on magnetic tape (47 tracks with
    12.7 mm tape width)
6 Track pattern for DATR on magnetic tape (45 tracks with
    25.4 mm tape width)
7 Track pattern for DATR on magnetic tape (89 tracks with
    25.4 mm tape width)
8 Emphasis characteristics
9 Frame and block structure
10 Synchronization pattern
11 Signal word distribution to tracks
12 Symbol and word structure
13 Example of input data V1
14 Main-frame interleave (tape speed 1)
15 Main-frame interleave (tape speed II)
16 Code interleave
Annex ZA (normative) Normative references to international
publications with their corresponding European publications

    

Applicable to 8 to 64 channel digital audio recording on 12.7 mm or 25.4 mm wide tape with stationary heads for professional use. Specifies the mechanical and electrical characteristics needed to ensure the interchangeability of programmes, recorded as digital audio signals on magnetic tape in professional industries.