NEC VH-602 User Manual page 43

AV Button
AV
Used for selecting the video input source and the appropriate audio tracks for recording.
This button has no effect during playback.
Tuner (TU position)
Mono TV broadcasts are recorded automatically and simultaneously onto the mono audio track and VHS Hi-Fi tracks.
Stereo broadcasts are recorded in the same way.
Simulcast (SC position)
Selects the video signal from the built-in tuner (TV programme) and the audio signal from a unit connected to the front
panel AUDIO INPUT L and R terminals.
Audio/video (AV1 or AV2 position)
Selects the video and audio signals from the units connected to the front panel or rear panel VIDEO INPUT and
AUDIO INPUT L and R terminals.
43