標準號：ANSI INCITS 121-1984
中文標準名稱：信息系統.雙面非格式化8英寸(200mm)、48tpi雙密度盒式軟盤.雙頭13262ftpr用物理和磁性通用要求 代替ANSI X3.121-1984
英文標準名稱：Information Systems - Two-Sided, Unformatted, 8-Inch (200-mm), 48-tpi, Double-Density, Flexible, Disk Cartridge - General, Physical, and Magnetic Requirements for 13 262 ftpr Two-Headed Application Replaces ANSI X3.121-1984
標準類型：L64
發布日期：1984/1/1 12:00:00
實施日期：1999/12/31 12:00:00
中國標準分類號：L64
國際標準分類號：35.220.21
適用范圍：This standard specifies the general, physical, and magnetic requirements for interchangeability of the two-sided, 8-in (200-mm) (nominal), 48-tracksper- inch (tpi), flexible disk cartridge (for 13 262 flux transitions per radian (ftpr) use) as required to achieve unformatted disk cartridge interchange among disk drives using 77 tracks per side and associated information processing systems. The two-sided flexible disk cartridge enclosed in a protective envelope and having two recording surfaces is of the type intended specifically for use with digital recording and reproducing equipment employing access mechanisms capable of positioning to these data tracks.