User`s manual

USB-3000™
User’s Manual
Version 1.6a
Section 3- Operation
Page 32
Digital Voice Systems, Inc.
The Speech Compression Specialists
3. Operation
3.1. Overview
The USB-3000™ is setup, controlled and operated through the PC’s USB interface using the program
executable named usb3kcom.exe. The usb3kcom.exe program is run from a Command Prompt window
using command line instructions. The USB interface is the physical link that establishes a communication
connection where the PC sends data packets (speech, channel, or control) directly to the vocoder and gets
either Compressed speech, PCM packets or Response packets in return.
3.2. USB-3000™ Default Settings
The USB-3000™ allows users to configure features of the AMBE-3000™ Vocoder Chip. When the USB-3000™
is plugged into the USB port USB-3000™ is setup to the as follows:
Discontinuous Transmission Enable (DTX) = Disabled
Echo Canceller (EC) = Disabled
Skew Control = Disabled
Noise Suppression = Enabled
Companding = Disabled
Echo Suppressor = Disabled
RateIndex = 0 (2400 bps with 0 bps FEC)
Parity Bit = Enabled
For description of these special functions, see Section 4.4 of the AMBE-3000™ Vocoder Chip Users Manual.
These are the initial settings of the USB-3000™ and are set whenever the device is plugged into a PC or reset
through a power cycle.
3.3. USB-3000™ Software CD Description
3.3.1. bin folder contents
The bin folder contains various executables that can be used to run the AMBE-3000™ vocoder and to help in
testing various files and formats. All of the executables and batch file are run in a DOS command prompt
window.
readme.txt
This file describes the command line syntax for each of the .exe and .bat contained in the \bin directory.
usb3ksetup.bat
This batch file is used to specify the COM port and baud-rate for the USB-3000 connection. The user is
required to enter the COM port and then the baud rate. The batch file sets up environment variables on the PC
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