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SIS Configuration
and Control
This section describes remote operation of the SW4 12G HD-SDI switchers. Topics include:
•
•
Using Simple Instruction Set (SIS) Commands
The SW4 12G HD-SDI can be remotely set up and controlled via Extron SIS commands that
are issued from a host computer or other device, such as a control system. SIS commands
can be issued via RS-232 from the computer serial port to the switcher rear panel Remote
port (see
switcher front panel Config port.
Host-to-switcher Communications
SIS commands consist of one or more characters per field. No special characters are
required to begin or end a command sequence. You can enter these commands from your
computer using a communication software program such as Extron DataViewer. When
the switcher determines that a command is valid, it executes the command and sends a
response to the host device.
Responses from the SW4 12G HD-SDI to the host computer end with a carriage return and
a line feed (CR/LF = ]), which signals the end of the response character string. A string is
one or more characters.
Switcher-initiated Messages
When a local event such as a front panel selection or change in signal status takes place,
the switcher responds by sending a message to the host, indicating what change has
occurred. No response is required from the host.
The switcher sends the following message when it is first powered on:
(C) Copyright 20nn, Extron Electronics, SW4 12G HD-SDI, Vn.nn, 60-1683-01
20nn
firmware version number
Using Simple Instruction Set (SIS) Commands
Command and Response Table for SIS Commands
Wiring for RS-232 Control
is the year in which the copyright for the firmware was registered, and
on page 5) or USB from a computer USB port to the
SW4 12G HD-SDI • SIS Configuration and Control
is the
Vn.nn
9
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