Host-to-Device Communications
NetPA Ultra Series-initiated Messages
The NetPA Ultra Series initiates messages under specific conditions. No response is
required for the host. The NetPA Ultra Series-initiated messages are listed below.
Copyright Message
The NetPA Ultra Series initiates the following copyright message when it is first powered on
or when a USB connection to the NetPA Ultra is made for the first time since the amplifier
powered up.
(c) Copyright 2020, Extron Electronics, {model}, Vn.nn, 60-nnnn-nn ]
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The NetPA Ultra Series amplifier sends the boot and copyright messages under the
following circumstances:
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Using the Command and Response Tables
SIS commands consist of a string (one or more characters per command field). No special
characters are required to begin or end a command sequence. When a NetPA U amplifier
determines a command is valid, it executes the command and sends a response to the host
device. All responses end with a carriage return and a line feed, signaling the end of the
response character string.
When programming, certain characters are more conveniently represented by their
hexadecimal rather than ASCII values. The table below shows the hexadecimal equivalent of
each ASCII character:
Space
Figure 94.
The Command and Response tables list valid ASCII commands, the NetPA Ultra Series
responses to the host, and descriptions of the command functions with the results of
executing the commands.
Vn.nn is the firmware version number.
{model} is the full model name, NetPA U 1004, for example.
60-nnnn-nn is the NetPA Ultra Series amplifier part number.
If the NetPA Ultra Series is off and RS-232 connection is already set up (the source
PC is cabled to the NetPA Ultra Series and a serial communication program such as
DataViewer is open), the connected unit sends these messages via RS-232 when first
powered on.
The NetPA Ultra sends the boot and copyright messages when a USB connection to
the NetPA Ultra is made for the first time since the amplifier powered up.
ASCII to HEX Conversion Table
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ASCII to Hex Conversion Table
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NetPA Ultra Series • Remote Control and Configuration
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