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Industry-first 24-bit I/O PXI module

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NATIONAL Instruments has announced the NI PXI-4461, the industry's first 24-bit analogue input/output data acquisition module for the PXI platform.

With the release of this module, engineers now can simultaneously generate and acquire high-accuracy dynamic signals for sound and vibration measurements.

The PXI-4461 module features 24-bit delta sigma converters that deliver nearly 120dB dynamic range over an input bandwidth of 92kHz at 204.8kS/s.

Its two differential output channels generate frequencies up to 92kHz, making it ideal for shaker control and stimulus response tests such as swept-sine.

To ensure the highest accuracy for precision audio measurements, the PXI-4461 dynamic signal acquisition module includes differential inputs, anti-aliasing protection and integrated electronic piezoelectric (IEPE) conditioning for microphones and accelerometers.

To speed development of sound and vibration applications, engineers can combine the PXI-4461 module with NI LabVIEW 7 Express graphical development software and the new LabVIEW Sound and Vibration Toolkit 3.1, which provides 50 ready-to-run examples.

Engineers can use these tools to create complete systems for frequency response measurements, swept-sine analysis or distortion characterisation in applications such as noise, vibration and harshness (NVH) testing and audio testing.

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