This standard ( Part 1 ) specifies a digital code format and modulation method to be used for timing and control purposes of television-tape machines and/or associated separate audio recorders. The encoded signal shall be recorded on the cue track or on an auxiliary longitudinal track. This standard is applicable for 50 Hz-625 lines system.
IS 12429 Pt.1-1988 history
1989IS 12429 Pt.1-1988 Time and control codes for video tape recorders Part 1 Longitudinal Time Code (LTC)