EISA-A2000                EISA data acquisition
EISA Performance Betters Sampling Rates
 
Microbytes Daily News Service
Copyright (c) 1989, McGraw-Hill, Inc.
The National Instruments EISA-A2000 is a data-acquisition board
that uses direct memory access and associated software to
functionally double the data-acquisition performance of Industry
Standard Architecture-based (ISA) systems, the company claims.
 
The EISA-A2000 samples analog signals at rates up to 1 million
samples per second, digitizes the samples with 12-bit
resolutions, and sends the data directly to memory.
 
The EISA-A2000 also features four analog input channels for
simultaneous sampling. Each channel has its own sample and hold
circuitry and each can sample at 1 million samples per second,
two channels can operate simultaneously at 500,000 samples per
second, or four channels can sample simultaneously at 250,000
samples per second, according to National Instruments.
 
Other hardware features include: pre, post, and delay triggering;
a real-time system integration bus for routing timing and
triggering signals between multiple data-acquisition boards; bus
bandwidth optimization (but not bus mastering), EISA burst-mode
support, software-controlled configuration and calibration; and
oscilloscope emulation.
 
VisionScope Virtual Instrument and DOS LabDriver software gives
you the oscilloscope emulation for easy capture and storage of
waveforms, and, respectively, programming functions so you can
call functions from Microsoft C or QuickBASIC to control the
board. Another software feature, LabWindows, gives you intuitive
interfaces called function panels for interactively configuring
and controlling programmable instruments and data-acquisition
boards.
 
Price: EISA-A2000, $2995; VisionScope, $295; DOS LabDriver, $295;
coaxial adapter for BNC connector, $225; 1 meter coaxial adapter
with two connectors, $175.
 
Contact: National Instruments Corp., 12109 Technology Blvd.,
Austin, TX 78727-6204, (800) 433-3488, or (512) 794-0100.
 
                              --- Roger K. Adams
 
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