National Instruments 780164-01

The National Instruments 780164-01 Sound and Vibration Device is a key component of the USB-4431 model line, engineered to cater to sound and vibration measurement applications. It delivers a remarkable sampling rate ranging from 2 to 102.4 kS/s and boasts a dynamic range of 100 dB, making it suitable for a wide array of industrial automation tasks. Featuring a 4-input and 1-output channel configuration, this device enables versatile data collection from accelerometers and microphones through its integrated electronic piezoelectric (IEPE) signal conditioning. The customized, software-selectable IEPE signal conditioning provides a constant current of 2.1 mA, allowing users to modify the settings to suit their specific measurement requirements.

The module's analog output channel facilitates seamless stimulus-response testing, while robust overvoltage protection of ±60 V ensures reliability in diverse operational environments. Each of the four simultaneous analog input channels is equipped with adaptive antialiasing filters, ensuring optimal performance by automatically adjusting to the sampling rate. The device utilizes delta-sigma modulation for precise analog-to-digital conversion, guaranteeing accurate signal capture.

Additionally, the 780164-01 employs a delta-sigma modulation digital-to-analog converter (DAC) that supports a wide signal range, from DC voltage to sine waves of up to 43.5 kHz and arbitrary waveforms. The DAC's flat passband and high image rejection capabilities ensure accurate signal reproduction. Compatible with the NI Sound and Vibration Measurement Suite, this device is exceptionally suited for applications in noise and vibration analysis, meeting the needs for power spectra, frequency response, and sound-level measurements through an array of LabVIEW analysis virtual instruments and the NI Sound and Vibration Assistant.