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SIS Commands
This section provides information about the SIS commands that are used to configure the
HDMI DA2, HDMI DA4, and HDMI DA6. The following topics are discussed:
•
•
•
Introduction to SIS
The distribution amplifiers can be set up and controlled remotely via Extron SIS commands
that are issued from a host computer running the Extron DataViewer utility or other control
system. The host device can be connected to the 3-pole captive screw connector on the
rear panel (see
figure 7,
The protocol is 9600 baud, 8 data bit, 1 stop bit, and no parity.
NOTES:
Host-to-Distribution Amplifier Communications
SIS commands consist of strings (one or more characters per command field). No special
characters are required to begin or end a command sequence. Unless otherwise stated, upper
and lower case characters can be used interchangeably. Most responses from the distribution
amplifier ends with a carriage return and a line feed (CR/LF =
response character string. When the switcher determines that a command is valid, it executes
the command and sends a response to the host device.
Distribution Amplifier-initiated Messages
When a local event such as a change in signal status takes place, the distribution amplifier
responds by sending a message to the host, indicating the status change. No response is
required from the host.
When the distribution amplifier is first switched on, it sends the message:
(c) Copyright 20yy, Extron Electronics HDMI DA Series, V x.xx,
60‑99x‑01]
released,
NOTE:
Introduction to SIS
Symbols Used in this Guide
Command and Response Table for SIS Commands
figure
2,
on page 4) or to the mini USB config port on the front panel (see
E
B
on page 11).
•
The wiring in the RS-232 cables crosses over so that the distribution amplifier
transmit (Tx) wire connects with the control device receive (Rx) and vice versa.
•
Only one control port can be used at a time. If the front port is in use, the rear
captive screw connector must be disconnected from the computer or other control
device. Likewise, if the captive screw port is in use, the USB port on the front panel
must be disconnected from the computer or other control device.
where
is the year the currently installed version of the firmware was
20yy
is the catalog part number and
60‑99x‑01
This response is only seen when the control computer is connected by the rear
panel RS-232 control port.
]
), which signals the end of the
is the firmware version number.
V x.xx
HDMI DA Series • SIS Commands
17
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