National Instruments PXI-4472

The National Instruments PXI-4472 is a high-performance dynamic signal acquisition module designed for precise sound and vibration measurement in industrial automation and testing environments. Featuring eight input channels, this PXI module utilizes advanced delta-sigma ADC technology, delivering 24-bit resolution for high-accuracy and simultaneous signal sampling. The module comes in various configurations, with part number 778279-01 representing the standard version, while part number 778664-01 is equipped with a comprehensive sound and vibration measurement suite. Integrated electronic piezoelectric (IEPE) signal conditioning caters to accelerometers and microphones, ensuring diverse measurement capabilities.

With a bandwidth range from DC to 45 kHz and a maximum sampling rate of 102.4 kS/s, the PXI-4472 provides significant flexibility, alongside an AC cutoff frequency of 3.4 Hz, which can be lowered to 0.5 Hz in the PXI-4472B variant for specialized vibration applications. Robust triggering options, including pretrigger and posttrigger, facilitate synchronized acquisition using various sources such as analog input channels or external digital triggers. The PXI star trigger bus ensures synchronization among multiple PXI-4472 modules, maintaining less than 1 ns skew, vital for achieving precise amplitude and phase measurements.

Additionally, the module supports DMA bus-master transfer rates of 20 to 30 MB/s, with burst data rates up to 132 MB/s through PCI mini-MITE technology, enabling efficient data management. To prevent data loss during high-speed acquisitions, a 1,024-sample analog input FIFO is integrated. The PXI-4472 seamlessly integrates with NI-DAQmx, enhancing compatibility with LabVIEW, LabWindows/CVI, and Measurement Studio software, which facilitates the development of comprehensive automated test systems. Supported by the NI Sound and Vibration Measurement Suite and Toolkit, the PXI-4472 delivers a wide range of analysis capabilities including power spectra, frequency responses, fractional-octave analysis, and more.