NA 022

DKE German Commission for Electrical, Electronic & Information Technologies of DIN and VDE

DIN EN 61237-4 [CURRENT] references following documents:

Document number Edition Title
IEC 60094-3 1979 Magnetic tape sound recording and reproducing systems. Part 3 : Methods of measuring the characteristics of recording and reproducing equipment for sound on magnetic tape More 
IEC 60268-1 1985 Sound system equipment. Part 1 : General More 
IEC 60268-2 1987-06 Sound system equipment. Part 2 : Explanation of general terms and calculation methods More 
IEC 60268-8 1973 Sound system equipment. Part 8 : Automatic gain control devices More 
IEC 60386 1972 Method of measurement of speed fluctuations in sound recording and reproducing equipment More 
IEC 61041-1 1990-11 Non-broadcast video tape recorders; methods of measurement; part 1: general video (NTSC/PAL) and audio (longitudinal) characteristics More 
IEC 61041-3 1993-12 Non-broadcast videotape recorders; methods of measurement; part 3: audio characteristics for FM recording More 
IEC 61105 1991-12 Reference tapes for video tape recorder systems More 
IEC 61213 1993-12 Analogue audio recording on video tape; polarity of magnetization More 
prEN 60651 1993-04 Sound level meters (IEC 60651:1979) More