Extron Electronics AVT 100 - Manual (Page 18)

AVT 100 • Software Configuration and Control
Software Configuration and Control
AVT 100 • Software Configuration and Control 4-3
The AVT 100 sends the copyright message when it first powers
on. Vx.xx is the firmware version number.
Error responses
If the AVT 100 is unable to execute a command it receives
because the command is invalid or contains invalid parameters,
the AVT returns an error response to the host. Error response
codes and their descriptions are as follows:
E01 – Invalid input channel number (out of range)
E10 – Invalid command
E11 – Invalid preset
E13 – Invalid value (out of range)
Using the command/response tables
The command/response tables on the following pages list valid
command ASCII and hexadecimal codes, the AVT 100’s
responses to the host, and a description of the command’s
function or the results of executing the command.
The ASCII to HEX conversion table below is for use with the
command/response tables.
ASCII to HEX Conversion Table
•
The AVT 100 demodulator can be remotely set up and
controlled via a host computer or other device (such as a control
system), attached to the rear panel RS-232 port. See chapter 2,
“Installation and Connection,” for information on connections.
The control device (host) can use the Extron Simple Instruction
Set (SIS
™ ) commands or the Windows -based control software.
Using Simple Instruction Set (SIS ™ ) Commands
Host-to-AVT 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 PC using a
communication software program such as HyperTerminal.
When the AVT 100 determines that a command is valid, it
executes the command and sends a response to the host device.
Most responses from the AVT 100 to the host (PC) 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.
AVT 100-initiated messages
When a local event such as a front panel selection takes place,
the AVT 100 responds by sending a message to the host,
indicating what selection was entered. No response is required
from the host. One of the following AVT 100-initiated messages
is displayed, depending on your version.
These messages are displayed only at power-up.
For the X4 and X1 values shown below, see “Symbol
definitions” on page 4-4.
NTSC version:
(C) Copyright 2006, Extron Electronics, AVT 100 – NTSC
Version, Vx.xx
Dip X4
TVC X1
PAL version:
(C) Copyright 2005, Extron Electronics, AVT 100 – PAL Version,
Vx.xx
Dip X4
TVC X1
4-2