National Instruments PXI-4462 PXI Sound and Vibration Module

The PXI-4462 (Part Number: 779688-01) PXI Sound and Vibration Module is a Dynamic Signal Acquisition or DSA device manufactured by National Instruments. The PXI-4462 is ideal for use in a wide variety of applications, such as environmental noise testing, rotating machinery evaluation, audio assessment, vibration analysis, machine condition monitoring, acoustic measurements, noise, vibration, and harshness measurements, and more. This Sound and Vibration Module has 24-bit resolution and a sample rate of 204.8 kS/s, the capability to sample and synchronize at the same time, and high-performing noise, distortion, and dynamic range. Several more of the useful features on the PXI-4462 include four-channel dynamic signal acquisition and six gain settings to configure an input range.

The National Instruments PXI-4462 module can handle two terminal configurations for analog input, which are differential and pseudodifferential. The pseudodifferential configuration is best if the signal source is floating. However, if the signal source is grounded or ground referenced, either differential or pseudodifferential configurations can be utilized. Upon powering on the sound and vibration module, it will automatically be configured for differential mode.

On the PXI-4462 Sound and Vibration Module, the analog overload point for the 0 dB gain range is around 10.7 Vpk, which is the voltage when the front-end circuitry starts saturating. There is also a digital overload detection feature, which happens prior to the module fixing gain and offset errors. Since the PXI-4662 spots the overload prior to correcting the gain and offset errors, it will also catch an overflow setting in the ADC filter.

PXI-4462 Obsolete Status has been announced by National Instruments, but the module will still be available for purchase and repairs by Apex Waves.