DS DS/EN 29171-2
DS DSEN 29171-2 1993-AUG-17 nformaton technology - 130 mm optcal dsk cartrdges wrte once for nformaton nterchange - Part 2 Recordng format
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This part of EN 29171 specifies two formats for the physical disposition of the tracks and sectors, the error correction codes, the modulation methods used for recording and the quality of the recorded signals.