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CIO-DAS16 and CIO-DAS16F from $799
Multifunction Analog and Digital IO Card for IBM Compatibles

CIO-DAS16 Multifunction Analog and Digital IO Card for IBM Compatibles

The CIO-DAS16 is an economical multifunction analog and digital IO card. Installed in any IBM or compatible computer, the CIO-DAS16 transforms your PC into a high-speed data acquisition and control station suitable for laboratory data collection, instrumentation, production testing or industrial monitoring. The analog input section of the CIO-DAS16 has been designed for flexibility and accuracy in a number of configurations and ranges. The analog signals are brought on board by a standard 37-pin D connector directly to two multiplexers, which may be configured as 16 channels of single ended input or eight channels of differential input. Gain switches accessible from the rear of the card provide gain ranges of 0.5, 1, 2, 5 and 10. The 12-bit A/D converter provides a resolution of 1/4095 parts of full scale. The speed of data gathering is dependent on the method of triggering and data transfer, as the table to the upper right illustrates.

The CIO-DAS16 has 32 digital lines available. Eight digital I/O lines (4 inputs and 4 outputs) are accessed from the CIO-DAS16's main connector from the rear of the computer. The remaining 24 lines, which are programmable as inputs and outputs in groups of eight, are accessed through an auxiliary connector. A separate terminal panel and cable is required for the auxiliary connector.

Analog voltage output is provided by two 12-bit multiplying D/A converters which accept a reference voltage and provide a proportional output. A precision -5V reference from the A/D converter provides an on-board D/A range of 0-5V. Other ranges between +/-10V are possible if you supply a +/_10V external reference. A trigger is the event that begins an acquisition/transfer cycle. There are three ways to trigger a CIO-DAS16: software, internal or external. There are also three ways to transfer data from the CIO- DAS16: program, interrupt service routine or DMA.

For simultaneous sample and hold, the CIO-DAS16 works with the CIO-SSH16 simultaneous sample and hold accessory board.

The 8254 counter/timer chip has three counters of 16 bits each. Much of the 8254 is used by the CIO-DAS16 as a pacer clock to synchronize A/D conversion. One full counter (counter 0) is available for counting, pulse generation of frequency measurement. The output of counter 2 is available to provide external synchronization the the A/D converter or as a programmable rate source.

Optional software drivers are available for users writing their own programs. The UNIV-DRVR universal library packages provides support for both DOS, Windows 3.1 and Windows 95. DOS support includes QuickBasic 4.5, Visual Basic, Turbo C, Visual C++ and Microsoft C. Windows support includes Microsoft C, Visual C++, Visual Basic, Borland C, C++ and Delphi. 32-bit drivers are also available on special request. Optional Labview drivers are also available.

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