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SIS Commands
This section provides information about the SIS commands that are used to configure the
HDMIDA2. The following topics are discussed:
z Introduction to SIS
z Symbols Used in this Guide
z Command and Response Table for SIS Commands
Introduction to SIS
The HDMI DA2 accepts SIS commands from a host device such as a 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 or to the config port on the front
panel.
The protocol is 9600 baud, 8 data bit, 1 stop bit, and no parity.
NOTES:
• The wiring in the RS‑232 cables crosses over so that the HDMI DA2 transmit
(Tx) wire connects with the control device receive (Rx) and vice versa.
• Only one serial 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 config port
on the front panel must be disconnected from the computer or other control
device.
SIS commands consist of strings (one or more characters per command field). Unless
otherwise stated, upper and lower case characters can be used interchangeably.
Commands do not require any special characters to begin or end the command string.
Each response from the HDMI DA2 ends with a carriage return and a line feed
(CR/LF=]), which signals the end of the response character string.
When the HDMI DA2 is first switched on, it sends the message:
(c) Copyright 2012, Extron Electronics HDMI DA Series, V x.xx, 60‑997‑01]
where 60‑997‑01 is the catalog part number and V x.xx is the firmware version number.
NOTE: This response is only seen when the control computer is connected by the
rear panel RS‑232 control port.
HDMIDA2 • SIS Commands 15