2 vmute, 5 audio commands, 1 aud-lvl – Kramer 4 x 4 Seamless AV Matrix Switcher/Multi-Scaler User Manual
Page 98: Ion 10.3.5

VSM-4x4A
–
VSM-4x4A RS-232/Ethernet Communication Protocol
91
10.3.4.2
VMUTE
Functions
Permission
Transparency
Set:
VMUTE
End User
Public
Get:
VMUTE?
End User
Video
Description
Syntax
Set:
Set enable/disable video on output
#
VMUTE
SPoutput_id,flagCR
Get:
Get video on output status
#
VMUTE?
SPoutput_idSP
CR
Response
Set / Get: ~
nn@
VMUTE
SPoutput_id,flagCR LF
Parameters
Output_id
–
1
(OUT A),
2
(OUT B),
3
(OUT C),
4
(OUT D),
*
(All)
flag
–video mute status:
0
(Disable video, TMDS and 5V out are off),
1
(Enable video),
2
(blank screen)
K-Config Example
Set Mute video on output A to off:
“#VMUTE 1,0”,0x0D
10.3.5
Audio Commands
Command
Description
AUD-LVL
Set/get input/output volume
MUTE
Mute the output
10.3.5.1
AUD-LVL
Functions
Permission
Transparency
Set:
AUD-LVL
End User
-
Get:
AUD-LVL?
End User
Audio
Description
Syntax
Set:
Set audio level in specific amplifier stage
#
AUD-LVL
SPstage,channel,volumeCR
Get:
Get audio level in specific amplifier stage
#
AUD-LVL?
SPstage,channelCR
Response
~
nn
@AUD-LVL
SPstage,channelCR LF
Parameters
stage
–
2
(Analog output)
channel
–
1
(OUT A),
2
(OUT B),
3
(OUT C),
4
(OUT D),
*
(All)
volume
–
0-100
(audio level) minus sign precedes negative values.
++
(+1, increase current value by one step)
--
(-1, decrease current value by one step)
K-Config Example
Set OUT B audio level to 75:
“#AUD
-LVL 2,2
,75”,0x0D