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Extron • Matrix 3200/6400 Series • User’s Manual
Chapter 4 • Programmer’s Guide
Host to Switcher Communications
The Matrix Wideband Video Switcher accepts both Simple Instruction Set and
Advanced Instruction Set Commands through the RS-232/RS-422 port. Simple
Instruction Set (SIS) commands may consist of one or more characters per
command field and do not require any special characters to begin or end the
command character sequence. Switcher responses to SIS commands all end
with a carriage return and a line feed (CR/LF). An Advanced Instruction Set
(AIS) command field begins with an Escape character and ends with a carriage
return, line feed is optional (the Switcher Response to an AIS command always
ends with a CR/LF).
When the Matrix Wideband Switcher receives a command (SIS or AIS) and
determines that it is valid, it will execute the command and send a response
back to the controlling (Host) device. If the Matrix Wideband Switcher is unable
to execute the command because it is invalid or contains invalid parameters, it
will return an error response to the Host. The error response is coded to help
identify the cause of the error. Error code responses are defined on Page 4-8.
When a Matrix Wideband Switcher local event takes place, such as a Front
Panel operation, the switcher responds by sending a message to the Host.
These switcher initiated messages are listed on Page 4-8. The switcher does not
expect a response from the host, but, for example, the host program may want to
request new status.
Command/Response Table
The Command/Response Table begins on the following page. Lower case
characters are acceptable in the command field only where indicated. Symbols
are used throughout the table to represent variables in the Command/Response
fields. Symbol definitions are shown at the beginning of the table as is an ASCII
to Hexadecimal (HEX) conversion table. Error Response codes and switcher
generated Unsolicited Responses are shown at the end of the table. Command
and/or Response examples are shown throughout the table. Name fields are 12
alphanumeric characters 0 - 9, A - Z (upper and lower case) including “+/-:=” and
space.
Commands are split into two groups which are identified by page headers. The
two groups are “Simple Instruction Set Commands” and “Advanced Instruction
Set and Simple Instruction Set Commands”.
4-2
Presentation
Room
Video Conference
Room
Training
Room
Media
Room
Extron
Electronics
COMPAQ PC
COMPAQ PC
COMPAQ PC
Player 2
DVD
Player 3
VCR
Player 1
VCR
Laser
Device Controller
DSS
HORIZONTAL Sync
VERTICAL Sync
AUDIO
GREEN
BLUE
RED
A
C
Input
1-6
Input
7-9
Input
10
D
B
Input
11
Input
13
Input
14
12
Figure 4-2.A Host computer controls Matrix 3200/6400 System