SMPTE 252M – Television Analog Recording – 1/2-in Type M-2 – Pulse Code Modulation Audio
This standard specifies the pulse code modulation (PCM) audio mode of encoding and recording system utilizing a 1/2-in type M-2 helical-scan video tape recorder operating with video signals having a typical scanning structure of 525 lines, 59.94 fields/s, 2:1 interlace, and the cassettes specified in ANSI/SMPTE 250M.
