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Four-channel module 24-bit data acquisition

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article image Faster high-channel-count audio and vibration analysis.

NATIONAL Instruments has released the PXI-4462 data acquisition (DAQ) module. It allows high-channel-count audio and vibration analysis applications to be performed faster and with more accuracy.

It delivers four-channel differential inputs for audio test and noise, vibration and harshness (NVH) applications on the PXI platform.

It has 24-bit delta-sigma converters that provide nearly 120dB dynamic range across an audio bandwidth up to 20kHz. It includes antialiasing protection and integrated electronic piezoelectric (IEPE) conditioning for microphones and accelerometers.

Users can synchronize this module with the NI PXI-4461 module, which features 24-bit analogue I/O, for vibration applications such as shaker control and stimulus-response tests including speaker testing.

By using the PXI-4462 DAQ module with software tools such as the NI LabVIEW Sound and Vibration Toolkit 3.1 and the NI LabVIEW Order Analysis Toolkit 2.0, users can perform a variety of tests including fractional-octave analysis, total harmonic distortion, spectral analysis and joint time-frequency analysis.

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