Related Manuals for Danville Signal Processing DSP-8200d
Summary of Contents for Danville Signal Processing DSP-8200d
- Page 1 Danville Signal Processing, Inc. DSP-8200d Tone Suppression & Noise Reduction System Operating Manual Version 2.1...
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Page 2: Operating Manual
Danville Signal Processing, Inc. DSP-8200d Tone Suppression & Noise Reduction System Operating Manual Copyright © 2001 by Danville Signal Processing, Inc. All rights reserved. Printed in USA. Under the copyright laws, this manual can’t be reproduced in any form without prior written permission from Danville Signal Processing, Inc. -
Page 3: Table Of Contents
Table of Contents Digital Signal Processing ……………………………… 4 Overview …………………………………………………… 4 System Description ……………………………………... 5 Card Cage …………………………………………….. 5 Control Module ……………………………………... 6 DSP Modules ……………………………………... 6 Power Supply Modules ………………………………. 7 Cable Connections & Jumper Configurations …………... 8 Connectors …………………………………………….. 8 DSP Module Jumper Configuration …………………. -
Page 4: Digital Signal Processing
This tone reduc- tion wipes out potential hearing-impairing test and interference tones in milliseconds. The DSP-8200d also provides bandpass filtering from 300 to 3400 Hz (voice telephone bandwidth). The DSP-8200d uses advanced digital signal processing technology to implement algo- rithms that perform three basic audio functions or modes: •... -
Page 5: System Description
Should the need ever arise, each DSP module is field reprogrammable using an ordinary notebook computer with an RS-232 serial interface. System Description The DSP-8200d consists of a 5-1/4 x 19 inch rack mounted card cage chassis, 12 plug-in DSP modules, a Control module, and two redundant Power Supply modules. Card Cage The card cage chassis is built around Euro rack standards. -
Page 6: Control Module
A relay switch closure output (BNC connector) is provided which will indicate if power has been lost to the DSP-8200d as well as an individual module failure. This output may be configured (via shorting jumper) as either normally open or normally closed. -
Page 7: Power Supply Modules
DSP modules are hot swappable. This means that the individual modules may be inserted or exchanged without powering down the cardcage and disrupting adjacent circuits. DSP-8200d DSP Module DSP-8200d Overload Normal Overload Normal (Actual Size) Heartbeat Power Supply Modules Each card cage has two power supply modules for redundant operation. Each power supply module is fully capable of supplying all of the necessary power to operate all the modules. -
Page 8: Cable Connections & Jumper Configurations
Cable Connections & Jumper Configurations RJ-45 Connector Audio In - Pin 1 & 2 (600 Ohm Balanced) Audio Out - Pin 3 & 6 (600 Ohm Balanced) Ground - Pin 8 Reserved - Pins 4,5,7 (leave open) Note: These connections are the same as Ethernet 10BaseT;... -
Page 9: Nominal Input Level
The squelch threshold is approximately 24dB below the nominal input level. When the DSP-8200d is properly configured, the yellow (normal) led will be on and the red (overload) led will flash occassionally. Page 9... -
Page 10: Jumper Configuration
Control Module Jumper Configuration A 3-pin header (JH1) configures the relay switch closure. This header is located near the front panel just behind the BNC connector. If a system failure occurs, the switch closure is open when the shorting jumper is in the NC position. -
Page 11: Troubleshooting & Checkout
As such, these algorithms modify themselves dynamically with changing speech or noise conditions. The easiest method to verify correct operation of a DSP-8200d module is to reconfigure the mode to bandpass. Since all signal processing functions are performed exclusively by mathematical calculation, a DSP-8200d module that passes this test will also operate correctly in the other operating modes. -
Page 12: Power Supply
Troubleshooting & Checkout Continued 4. Apply power to the DSP-8200d card cage. The normal and overload LEDs will flash alternately during the power up stage and the heartbeat will begin the pulse at a one-second rate. The DSP card cage control module alarm will go off. -
Page 13: Product Warranty
Danville Signal Processing software and firmware products which are designated by Danville Signal Processing for use with a hardware products are warranted not to fail to execute their programming instructions due to defects in materials and workmanship. -
Page 14: Typical Faa Installation
Receive Audio Receive Audio 8165 The DSP-8200d is useful in many FAA applications. Each module can be configured for tone suppression or broadband noise reduction. Tone suppression prevents loud signaling tones from reaching air traffic controllers and eliminates or reduces naturally occurring heterodynes between air traffic control and multiple airplanes.