8 maximum string length, 9 backward support, 10 commands – Kramer Electronics VS-21HDCP-IR User Manual
Page 19: 1 help commands, 2 common commands, 3 basic routing commands, 4 result and error codes, Maximum string length, Backward support, Commands

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VS-21HDCP-IR - Protocol 3000 Syntax
8.8
Maximum String Length
64 characters
8.9
Backward Support
Protocol 2000 is transparently supported by Protocol 3000. You can switch
between protocols using a switch protocol command from either platform.
8.10
Commands
8.10.1
Help Commands
Command
Syntax
Response
Protocol handshaking
#CR
~OKCRLF
8.10.2
Common Commands
Command
Description
Syntax
Response
MODEL?
Read device model
MODEL?
MODEL MACHINE_MODEL
VERSION?
Read device firmware version
VERSION?
VERSION MAJOR .MINOR .BUILD .REVISION
8.10.3
Basic Routing Commands
Command
Cmd
Short
Description
Syntax
Response
AV
Switch audio
and video
AV IN>OUT, IN>OUT
, …
AV IN>OUT, IN>OUT
,…RESULT
AV?
Query audio
and video
AV IN>OUT, IN>OUT
, …
AV IN>OUT, IN>OUT
,…RESULT
VID
V
Switch video
only
VID IN>OUT, IN>OUT
, …
Short form: V IN>OUT,
IN>OUT
, …
VID IN>OUT, IN>OUT,
…RESULT
VID?
V?
Query Switch
video only
VID? OUT
Short form: V? OUT
VID? *
VID IN>OUT
VID IN>1, IN>2
, …
8.10.4
Result and Error Codes
Result
Syntax
Command ran successfully, no error.
COMMAND PARAMETERS OK
Protocol Errors:
Syntax error
ERR001
Command not available for this device
ERR002
Parameter is out of range
ERR003
Unauthorized access (command run without the
matching login).
ERR004