Information processing - Data interchange on 130 mm (5,25 in) flexible disk cartridges using modified frequency modulation recording at 7958 ftprad, 1,9 tpmm ........ (abbreviated)
This part of ISO 7487 specifies the quality of recorded signals, the track layout, and a track format to
be used on 130 mm (5.25 in) flexible disk cartridges intended for data interchange between data processing systems.
ICS
35.220.21 Magnetic. Including flexible disks, diskettes, disk packs, disk cartridges, etc. / Магнитные диски. Включая гибкие магнитные диски, дискеты, дисковые пакеты, дисковые картриджи и т.д.