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CD Start Page | DATA ACQUISITION ONLINE Page | DATA ACQUISITION PRODUCTS Page |
The DAS-1800 Series is a family of high performance data acquisition boards for the IBM PC/AT and compatible computers. These boards features continuous, high speed, gap-free data acquisition under both DOS and Windows environments. An on-board FIFO buffer and dual channel DMA allows the acquisition of large amounts of data without dropouts. The gain channel queue lets high speed acquisition continue even on channels with different gains or in non-sequential order. All boards are register compatible, so applications running on one board version can be ported to another board without changing software.
The DAS-1800HC models feature 64 single-ended or 32 differential inputs at up to 333 ksamples/sec. The DAS-1800ST models have 16 single-ended or 8 differential inputs with the ability to externally expand to 256 differential inputs at 333 ksamples/sec. The DAS-1800HR is a 16-bit version of the DAS-1800ST, with a maximum acquisition rate of 100 ksamples/sec. The DAS-1800AO has the same analog input and discrete I/O specifications as the DAS-1800ST with the addition of 2 wave form-quality 12-bit analog outputs. These outputs include a 2048 location FIFO and de-glitching circuitry. Outputs may be updated through DMA, interrupt, or programmed I/O, or the outputs can operate independently of the computer through the use of the FIFO.Analog inputs are multiplexed into a high-speed 12-bit or 16-bit analog-to-digital converter. All inputs are software configurable for single-ended or differential inputs and unipolar or bipolar input ranges. Single channel inputs can be acquired at any gain up to 333 ksamples/sec, and multiple channels at rates to 312.5 ksamples/sec, depending on the model used.
A 256 location channel-gain queue on the DAS-1800HR and DAS-1800ST (64 locations on the DAS-1800HC) allows high speed acquisition with channels at different gains and in non-sequential order using DMA or interrupt-based data transfer. The on-board 1024 location FIFO buffer assures reliable acquisition under both DOS and Windows. Data transfer may be accomplished with single-channel 16-bit DMA, dual-channel 16-bit DMA, interrupt or programmed I/O.
The DAS-1800 Series features flexible clocking, triggering and gating modes. The board may be configured to accept an external pacer clock input, or use the on-board timebase to provide a conversion rate from 4.32 samples/hour to 333 ksamples/s. The programmable burst mode capability allows acquisition from a series of channel scans at high speed with a programmed interval between scans. This mode emulates a simultaneous sample and hold (SSH) function.
Driver Software
DriverLINX software is also included, at no additional charge, with every
DAS-1200 series board. Supporting your programming requirements in Windows
3.x/95 environments, DriverLINX provides application developers a standardized
interface to over 100 services for creating foreground and background tasks to
perform analog input and output, digital input and output, time and frequency
measurement, event counting, pulse output and period measurement. In addition
to basic I/O support, DriverLINX also provides sophisticated built-in
capabilities to handle memory and data buffer management, a rich selection of
starting and stopping trigger events including pre-, mid-point, and post
triggering protocols, extensive error checking and reporting capabilities, and
a context-sensitive on-line help system. There are two versions included:
DriverLINX and DriverLINX/VB. DriverLINX provides the C/C++interfaces.
DriverLINX/VB provides custom control interfaces (VBX and ActiveX) that can be
accessed from the palette of built-in tools included in Microsoft's Visual
Basic and Visual C environments. Software is supplied on CD-Rom.
VIEW an Adobe Acrobat pdf file for more product
info (requires Acrobat Reader).
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