Pioneer Industrial DVD Player DVD-V7400 - Manual (Page 38)

Command Descriptions
Execution :
String Status Return DVD player
Play mode
1AG<CR>
R<CR> Angle is changed
5.32 Select Parental-Level (DVD)
Function : Set Parental Level
Format : Integer PT
Explanation : The command sets the parental level. The player allows up to 8
levels for playback. If an unavailable level is selected, the player returns an
error message.
Note: The player accepts this command only when playing a DVD disc.
5.33 Audio Control (DVD, CD, VCD)
Function : Control Audio Output
Format : Integer AD
Explanation : The command allows changes to the audio output from the
default value (7) then returns the completed status message. The player
resets to the default value when the tray opens or when the power cycles.
NOTE: The player automatically resets the audio control to 3 (Audio 1), when
it is powered ON.
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