IS 6933 : 1973 35 mm portable motion picture projectors

1 Scope

1.1 This standard lays down the safety and performancerequirements of 35 mm portable motion picture projectors withoptical or magnetic sound systems or both intended to be operatedwith incandescent lamps and for a rated voltage not exceeding 250V.

2 References

IS 2 :1960Rules for rounding off numerical values

IS 1885 : XXXIV :1972 Electrotechnical vocabulary:Part XXXIV Cinematography

IS 4495 :1968Methods of measurement of light output ofcinematography projectors (for narrow gauge film)

IS 6562 :1972Specification for 1000 Hz balancing and signallevel test film

IS 6564 :1972Specification for scanning-beam uniformity testfilm

IS 1031 :1967Methods of measurements on loudspeakers andloudspeaker systems

IS 6362 :1972Specification for 1000 Hz balancing and signallevel test film