User`s guide

40 Serial Control
Still
Description: This command causes the Digital Video Machine 2 to still frame. Play will
resume from where it left off whenever another Play command is issued unless a
Select File command is issued, in which case the new file will play from the
beginning. Because the video image is held in a digital buffer, the still frame
will be rock solid, and may be held indefinitely without media wear.
Command bytes: 4FH
Message Response: 0AH
Comments: If a Select File command is issued while in Still mode, playback will start from
the beginning of the selected file whenever another Play command is issued. To
accomplish this same function but blank the screen, refer to the Video Mute
command.
Stop
Description: This command causes the Digital Video Machine 2 to stop video playback. The
last displayed frame will remain on screen. To begin playback again, you must
first issue a Select File command followed by a Play command.
Command bytes: 3FH
Message Response: 0AH
Audio Mute
Description: This command causes the Digital Video Machine 2 to mute the audio output
while continuing to play video. Use the Audio Unmute command to resume
audio output
Command bytes: 24H
Message Response: 0AH
Audio Unmute
Description: This command causes the Digital Video Machine 2 to unmute the audio output
after an Audio Mute command is issued
Command bytes: 25H
Message Response: 0AH