This part of IEC 60774 is applicable to the S-VHS ET mode which records in S-VHS signal format on a VHS cassette. In this mode, several video signal system recording parameters are switched so that the signal characteristics recorded on the VHS tape are equivalent to S-VHS recording on S-VHS tape. Cassette recorded in the S-VHS ET mode can be played with S-VHS based playback system and the VHS equivalent that includes the SQPB function. This standard indicates the differences from IEC 60774-3 S-VHS.