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Data acquisition module adds analogue, digital I/O features

20 Jun 2014

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Diamond Systems unveiled the DS-MPE-DAQ0804, a rugged, low cost data acquisition PCIe MiniCard module. This device focuses on adding analogue I/O and digital I/O features to embedded applications requiring low cost, small size, and/or light weight.

The DS-MPE-DAQ0804 offers eight 16bit analogue input channels, four 16bit analogue output channels, and 21 configurable digital I/O lines in a PCIe MiniCard form factor with an extended operating temperature of -40oC to 85oC. The analogue inputs offer single-ended and true differential capability, four programmable input ranges, and 100kHz aggregate sample rate.

 Rugged, low cost data acquisition PCIe MiniCard module

Rugged, low cost data acquisition PCIe MiniCard module is ideal for adding analogue I/O and digital I/O features to embedded applications.

Other features of the DS-MPE-DAQ0804 analogue input circuitry include an integrated programmable timer to control A/D sample rates automatically, resulting in precise timing plus significantly reduced processor overhead compared to software polling techniques. The 2048-sample data FIFO with programmable interrupt threshold further reduces processor overhead by reducing the interrupt rate required to transfer data from the board to the application. With these features, DS-MPE-DAQ0804 can offer accurate, full-speed performance in any single-board computer regardless of processor speed.

The 16bit analogue outputs offer two programmable output voltage ranges. An integrated precision, low-drift voltage reference ensures a lifetime of accurate performance across the full operating temperature range. A built-in waveform generator with 2K sample buffer enables the board to be used in stimulus applications such as sonar, laser light control, and other applications.

The 21 buffered digital I/O lines feature programmable direction in groups of 4-, 6-, and 8bits. The digital I/O lines can also be configured as either 24bit pulse width modulators or 32bit counter/timers, driven by the on-board 50MHz clock.

All I/O signals are provided on two miniature connectors, one for the analogue signals and one for the digital signals. The connectors feature positive locking for maximum reliability in high vibration environments.

Diamond's free Universal Driver software, included with the DS-MPE-DAQ0804, simplifies programming effort for all the board's I/O functions under both Windows and Linux operating systems.




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