Analogue input board monitors sensors

The AI-211's 100dB digital anti-aliasing filtering is provided by a combination of analogue and digital FIR filters.

Adept Scientific has added United Electronic Industries' (UEI) DNA-AI-211 analogue input board to its range of data acquisition hardware.

The board features four fully isolated, IEPE/ICP accelerometer/vibration sensor channels and offers 24bit resolution with a 109dB signal to noise (S/N) ratio.

Configured with an A/D per channel, the board offers sample rates up to 125ksample/s per channel (500ksample/s for the board).

The AI-211 is designed to allow direct connection with industry-standard two-wire vibration sensors and provides both software and LED annunciation of open or shorted sensors.

The AI-211's 100dB digital anti-aliasing filtering is provided by a combination of analogue and digital FIR filters.

The digital filter allows a combination of low passband ripple (+/-0.005dB), steep falloff and low stop band floor (-100dB) unattainable with simple analogue filtering.

The digital nature of the filter also ensures that each filter induces an identical phase shift, so no filter-induced inter-channel phase jitter will corrupt subsequent analysis.

The DNx-AI-211 is fully supported by UEI's software suite, which includes factory-written support for all popular operating systems such as Windows, Linux and VxWorks, and programming languages such as C, C# and VB .NET, and application packages such as LabView, Matlab and DasyLab SyntaxError.

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