DIN EN 21864 : 1994已作废
INFORMATION TECHNOLOGY - UNRECORDED 12,7 MM (0,5 IN) WIDE MAGNETIC TAPE FOR INFORMATION INTERCHANGE - 32 FTPMM (800 FTPI) NRZ1, 126 FTPMM (3200 FTPI) PHASE ENCODED 356 FTPMM (9042 FTPI) NRZ1
出版：German Institute for Standardisation (Deutsches Institut für Normung)
专家解读视频
Describes the characteristics of 12,7mm wide magnetic tape with reel, to enable magnetic and mechanical interchangeability between information processing systems. Applies solely to magnetic tape for digital recording using the NRZ1 method of recording at 32 and 356 ftpmm or the phase-encoded method of recording at 126 ftpmm in which the direction of magnetization is nominally longitudinal.
SNV BS EN 21864 : 1994 - Identical
