The National Instruments 778279-02 PXI Sound and Vibration Module is an essential component of the PXI-4472B Model series, designed specifically for high-performance sound and vibration measurements. With eight simultaneous input channels, this module employs dynamic signal acquisition to capture a wide array of industrial measurement applications. Each channel is equipped with integrated electronic piezoelectric (IEPE) signal conditioning, which optimally supports accelerometers and microphones. The module features automated, integrated anti-aliasing filters that adjust based on the user-selected sample rate, ensuring precise and reliable readings across various frequencies.

Notably, the 778279-02 offers a low AC cutoff frequency of 0.5 Hz, making it particularly effective for recording low-frequency AC vibration measurements, which is essential for accurate monitoring in critical applications. To enhance performance and ensure synchronization, the module can interconnect with additional units or external devices through the RTSI bus, while the PXI star trigger bus allows for precise timing signal transfers with less than 1 ns of skew between channels. This ability to maintain synchronicity enables minimal phase mismatch across devices, even when handling signals as high as 1 kHz.

Complementing its hardware capabilities, the 778279-02 module operates with the NI-DAQ software environment, offering a comprehensive library of functions that facilitate intricate interactions between the data acquisition hardware and the host computer. This streamlined software experience promotes ease of programming and platform transitions while maintaining consistent user interfaces across software generations. The module also supports both pretrigger and posttrigger modes for signal capture, allowing for enhanced adaptability to various measurement scenarios by enabling signal digitalization prior to and following trigger conditions.