User's Manual
VP-81K - Kramer Protocol  31 
Switcher Actions 
Audio-video channel has switched (AFV mode) 
AV IN>OUT 
Video channel has switched (Breakaway mode) 
VID IN>OUT 
Audio channel has switched (Breakaway mode) 
AUD IN>OUT 
Result Codes (Errors) 
Syntax 
No error. Command running succeeded  COMMAND PARAMETERS OK 
Protocol Errors 
Syntax Error 
ERR001 
Command not available for this device 
ERR002 
Parameter is out of range 
ERR003 
Unauthorized access (running command without the match login). 
ERR004 
Basic Routing Commands 
Command Syntax  Response 
Switch audio & video 
AV IN>OUT, IN>OUT, …  AV IN>OUT, IN>OUT,…RESULT 
Switch video only 
VID IN>OUT, IN>OUT, … 
Short form: V IN>OUT, IN>OUT, … 
VID IN>OUT, IN>OUT, …RESULT 
Note: 
When AFV mode is active, this command will switch also audio. If audio is breakaway – device display mode will 
change to show audio connections status. 
Switch audio only 
AUD IN>OUT, IN>OUT, … 
Short form: A IN>OUT, IN>OUT, … 
AUD IN>OUT, IN>OUT, …RESULT 
Note: When AFV mode is active, this command will switch also video. 
Read video 
connection 
VID? OUT 
Short form: V? OUT 
VID? * 
VID IN>OUT 
VID IN>1, IN>2, … 
Read audio 
connection 
AUD? OUT 
Short form: A? OUT 
AUD? * 
AUD IN>OUT 
AUD IN>1, IN>2, … 
Parameters Description: 
IN = Input number or '0' to disconnect output. 
'>' = Connection character between in and out parameters. 
OUT = Output number or '*' for all outputs. 
Examples: 
Switch Video and Audio input 3 to output 7 
#AV 3>7CR 
~AV 3>7 OKCRLF 
Switch Video input 2 to output 4 
#V 2>4CR 
~VID 2>4 OKCRLF 
Switch Video input 4 to output 2 in machine 
number 6 
#6@VID 4>2CR 
~6@VID 4>2 OKCRLF 
Disconnect Video and Audio Output 4 
#AV 0>4CR 
~AV 0>4 OKCRLF 
Switch Video Input 3 to All Outputs 
#V 3>*CR 
~VID 3>* OKCRLF 










