The NI USB-4431 is a five-channel USB dynamic signal acquisition module for making high-accuracy sound and vibration measurements from integrated electronic piezoelectric (IEPE) and non-IEPE sensors. Four channels on the USB-4431 are analog input channels that can sample from 1 S/s up to a full rate of 102.4 kS/s. The analog input channels are all sampled simultaneously. The fifth channel on the USB-4431 is a 24-bit analog output channel ideal for stimulus-response tests. The analog output channel maximum update rate is 96 kS/s. This module delivers 100 dB of dynamic range on its analog input channels. It also incorporates software-selectable AC/DC coupling and IEPE signal conditioning for accelerometers and microphones. Refer to the specifications document for information about the analog output dynamic range.
Recommended Software
NI sound and vibration analysis software, including the NI Sound and Vibration Measurement Suite and the NI Sound and Vibration Toolkit, provides signal processing functionality for noise, vibration, and harshness. NI analysis software features NI Sound and Vibration Assistant interactive software for quickly acquiring, analyzing, and logging acoustic, noise, and vibration data. With a configuration-based, flexible measurement library and open-analysis capability, the Sound and Vibration Assistant is designed for quick data capture through a unique software-based measurement approach to create customized applications.
