
HDMI V2.0 4x1 Presentation Switcher with Audio Extraction
14
7.1.5 Audio Control
Command
Function
Command Example and
Feedback
SPDIFON.
Turn on the OPTICAL audio output.
SPDIF OUT ON!
SPDIFOFF.
Turn off the OPTICAL audio output.
SPDIF OUT OFF!
IISON.
Turn on the analog balanced L/R audio
output.
IIS OUT ON!
IISOFF.
Turn off the analog balanced L/R audio
output.
IIS OUT OFF!
SETAUDIOVOL
<xx>.
Set the volume level of analog
balanced L/R audio to xx. xx=0~60.
SETAUDIOVOL <0>.
SETAUDIOVOL <60>.
AUDIO VOL:0!
AUDIO VOL:60!
AUDIOON
Enable HDMI output’s audio
AUDIOON
AUDIO HDMI OUT ON!
AUDIOOFF
Disable HDMI output’s audio
AUDIOOFF
AUDIO HDMI OUT OFF!
7.1.6 Display Control
Command
Function
Command Example and
Feedback
TVON.
Send CEC “DISPLAY ON” command to
power on the display device (e.g. TV).
CEC TV POWER ON!
TVOFF.
Send CEC “DISPLAY OFF” command to
power off the display device (e.g. TV).
CEC TV POWER OFF!
TVVOL+.
Send CEC “VOLUME UP” command to
volume up the display device (e.g. TV).
CEC TV VOLUME INCREASE!
TVVOL-.
Send CEC “VOLUME DOWN” command
to volume down the display device (e.g.
TV).
CEC TV VOLUME DECREASE!
TVMUTE.
Send CEC “VOLUME MUTE” command
to mute/unmute the display device (e.g.
TV).
CEC TV VOLUME
MUTE/UNMUTE!