Applies to magnetic video recording and/or playback with 8 mm tape
cassettes on two-head helical-scan video cassette recorders,
suitable for the recording and/or playback of monochrome as well as
colour television signals. Defines the electrical and mechanical
characteristics of equipment which will provide for
interchangeability of recorded cassettes, including the ability to
reproduce recordings made on both types of magnetic tapes defined
in section 2. Related to 525 line / 60 field or 625 line / 50 field
systems, NTSC and PAL respectively.