Get device protocol 
version. 
COMMAND 
#PROT-VER?<CR> 
FEEDBACK 
~nn@PROT-VER3000:version<CR><LF> 
version – XX.XX where X is a 
decimal digit 
Get the device protocol 
version: 
#PROT-VER?<CR> 
Set a preset as read-
only. 
 Prevents users from 
overriding the preset by 
mistake. 
COMMAND 
#PRST-LOCKpreset_index,mode<CR> 
FEEDBACK 
~nn@PRST-LOCKpreset_index,mode<CR><LF> 
preset_index – Preset number 
1 – Preset 1 
2 – Preset 2 
3 – Preset 3 
4 – Preset 4 
5 – Preset 5 
6 – Preset 6 
7 – Preset 7 
8 – Preset 8 
mode – On/Off 
#PRST-LOCK2,on<CR> 
~01@PRST-LOCK 2,ON 
#PRST-LOCK2<CR> 
~01@PRST-LOCK 2,ON 
Get the preset read-
only status. 
 Prevents users from 
overriding the preset by 
mistake. 
COMMAND 
#PRST-LOCK?preset_index<CR> 
FEEDBACK 
~nn@PRST-LOCKpreset_index,mode<CR><LF> 
preset_index – Preset number 
1 – Preset 1 
2 – Preset 2 
3 – Preset 3 
4 – Preset 4 
5 – Preset 5 
6 – Preset 6 
7 – Preset 7 
8 – Preset 8 
mode – On/Off 
#PRST-LOCK?1<CR> 
~01@PRST-LOCK 1,OFF 
#PRST-LOCK?2<CR> 
~01@PRST-LOCK 2,OFF 
Get saved preset list. 
 In most units, video 
and audio presets with 
the same number are 
stored and recalled 
together by commands 
#PRST-STO and 
#PRST-RCL. 
COMMAND 
#PRST-LST?<CR> 
FEEDBACK 
~nn@PRST-LSTpreset,preset,…<CR><LF> 
preset – Preset number 
1 – Preset 1 
2 – Preset 2 
3 – Preset 3 
4 – Preset 4 
5 – Preset 5 
6 – Preset 6 
7 – Preset 7 
8 – Preset 8 
Show preset list: 
#PRST-LST?<CR> 
Recall saved preset list. 
 In most units, video 
and audio presets with 
the same number are 
stored and recalled 
together by commands 
#PRST-STO and 
#PRST-RCL. 
COMMAND 
#PRST-RCLpreset<CR> 
FEEDBACK 
~nn@PRST-RCLpreset<CR><LF> 
preset – Preset number 
1 – Preset 1 
2 – Preset 2 
3 – Preset 3 
4 – Preset 4 
5 – Preset 5 
6 – Preset 6 
7 – Preset 7 
8 – Preset 8 
Recall preset 1: 
#PRST-RCL1<CR> 
Store current 
connections, volumes 
and modes in preset. 
 In most units, video 
and audio presets with 
the same number are 
stored and recalled 
together by commands 
#PRST-STO and 
#PRST-RCL. 
COMMAND 
#PRST-STOpreset<CR> 
FEEDBACK 
~nn@PRST-STOpreset<CR><LF> 
preset – Preset number 
1 – Preset 1 
2 – Preset 2 
3 – Preset 3 
4 – Preset 4 
5 – Preset 5 
6 – Preset 6 
7 – Preset 7 
8 – Preset 8 
Store preset 1: 
#PRST-STO1<CR> 
Reset device. 
 To avoid locking the 
port due to a USB bug 
in Windows, disconnect 
USB connections 
immediately after 
running this command. 
If the port was locked, 
disconnect and 
reconnect the cable to 
reopen the port. 
COMMAND 
#RESET<CR> 
FEEDBACK 
~nn@RESETok<CR><LF> 
Reset the device: 
#RESET<CR> 
Start/stop security. 
 The permission 
system works only if 
security is enabled with 
the “SECUR” 
command. 
COMMAND 
#SECURsecurity_state<CR> 
FEEDBACK 
~nn@SECURsecurity_state<CR><LF> 
security_state – Security state 
0 – OFF (disables security) 
1 – ON (enables security) 
Enable the permission 
system: 
#SECUR0<CR> 
Get current security 
state. 
 The permission 
system works only if 
security is enabled with 
the “SECUR” 
command. 
COMMAND 
#SECUR?<CR> 
FEEDBACK 
~nn@SECURsecurity_state<CR><LF> 
security_state – Security state 
0 – OFF (disables security) 
1 – ON (enables security) 
Get current security state: 
#SECUR?<CR> 
COMMAND 
#SIGNAL?in_index<CR> 
FEEDBACK 
~nn@SIGNALin_index,status<CR><LF> 
in_index – Number that indicates 
the specific input: 
1 – Input 1 
2 – Input 2 
3 – Input 3 
4 – Input 4 
status – Signal status according 
to signal validation: 
0 – Off 
1 – On 
Get the input signal lock 
status of Input 1: 
#SIGNAL?1<CR>