Information processing - Data interchange on 130 mm (5,25 in) flexible disk cartridges using modified frequency modulation recording at 13 262 ftprad, on 80 tracks ...(abbreviated)
This part of ISO 8630 specifies the quality of recorded signals, the track layout, and a track format to be used on 130 mm (5.25 in), 13 262 ftprad 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.