ISO 4834:1997

This International Standard specifies basic technical characteristics for the magnetic sound test films for checking, adjusting and measuring sound reproducing channels of dubbing motion-picture installations. It also specifies types and technical characteristics of magnetic test films made on 35 mm, 17,5 mm and 16 mm motion-picture films. This International Standard includes test films intended for the checking, adjusting and measuring of a) inclination angle (azimuth) of the magnetic head gaps; b) output level balance of multi-channel systems; c) frequency response of the sound reproduction channel; d) non-uniformity of film velocity (flutter).