标准号:IS 12774-1989
发布日期:1990/4/1 12:00:00
实施日期:1999/12/31 12:00:00
适用范围:This Indian Standard specifies the location and dimensions of head gaps for recording three-, four-, or six-track magnetic sound records on 35 mm ( perforated in accordance with IS 6085 : 1979 ) and one single-track record on 17.5-mm motion-picture film. It also specifies the assignment of records to the various tracks on the magnetic coating on the film in relation to the direction of the film travel.