DATA CONVERSION INTERFACE BOARD - DESIGN DOCUMENT

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Authors
  1. Da Sylva, P.
  2. Caseault, J.
Corporate Authors
Defence Research Establishment Ottawa, Ottawa ONT (CAN);MultiDev JDL Communications Inc, Hull QUE (CAN)
Abstract
The EARS architecture allows the transfer of massive amount of information betwen the data sources and the storage subsystems. It is also capable of monitoring the transfer activity, set up the radar system for operation and control, and perform some data processing on the radar data. The Data Conversion Interface Board is designed to allow transfers between 16 data acquisition boards (12-bit data streams) and a disk array and/or a Real-Time DSP Card. Three modes of operations are supported. In the first mode, the interface card reads data from 4, 8 or 16 AtoD boards and transfers the data to the disk array. In the second mode of operation, the interface card reads data from 2, 4, 8 or 16 channels and transfers the data to the DSP card. The third mode is the combination of modes 1 and 2: data is sent to both the DSP card and the disk array. The data transfer mechanism is executed in two phases. During phase one, the system acquires the data from all 16 channels and temporarily stores the data inside the AtoD Board memory buffers. When the memory buffers are full, the DCIB stops the data acquisition process and transfers the data (in groups of 4, 8 or 16 channels) to the disk array and/or to the DSP Board. During phase two, the information is transfered until the memory buffers are empty.
Keywords
EARS (Experimental Array Radar System);Multichannel architecture;Sidelobe cancellation;IF Receiver;Intermediate frequencies;Side Lobe Canceller (SLC);Data formatting;VMEBUS;Operating systems (OS-9);System diagnostics;Concept 51 disk array;System controller;Disgital signal processing;Data tranfers
Report Number
DREO-CR-98-632;MD-002-07 — Contractor Report; Technical Report; Design Document
Date of publication
31 May 1996
Number of Pages
42
DSTKIM No
98-02893
CANDIS No
509874
Format(s):
Hardcopy;Document Image stored on Optical Disk

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