SMPTE 230M – Television Analog Recording – 1/2-in Type L – Electrical Parameters, Control Code and Tracking Control
This standard specifies the electrical parameters of video, audio, time and control code. and tracking-control signals for 1/2-in type L helical-scan video tape recorders operating with video signals having a typical scanning structure of 525 lines, 59.94 fields per second, and 2:1 interlace. This standard specifies two recording modes: Mode 1 uses oxide-particle tape, and mode 2 uses metal-particle tape and permits audio frequency modulation (AFM) signals to be recorded.
