Helical-scan video-tape cassette system using 19 mm (3/4 in) magnetic tape, known as U-format (IEC 60712:1993 + A1:1993); German version EN 60712:1994 + A1:1994— 40 стр.
Magnetic tape sound recording and reproducing system - Part 3: Methods of measuring the characteristics of recording and reproducing equipment for sound on magnetic tape (IEC 60094-3:1979 + A1:1980 + A2:1988 + A3:1996); German version EN 60094-3:1996 + A3:1996— 16 стр.