National Instruments USB-4431 Sound and Vibration Device

The USB-4431 (Part Number: 780164-01) is a product of National Instruments. This device is a five channel dynamic signal acquisition module. The NI USB-4431 makes high accuracy measurements from IEPE sensors. This Sound and Vibration Device delivers a dynamic range of 100 dB. The device also includes signal conditioning, which is software-selectable. Signal conditioning can be utilized for accelerometers, as well as microphones. The USB-4431 NI device has four differential analog input channels. These four channels develop at rates starting from 2 kS/s and up to 102.4 kS/s simultaneously, and consume power up to 2.5 W. This model is the best for portable test applications. The frequency response audio test is an example of such an application.

The USB-4431 Signal Acquisition Module contains 1 BNC input connector per channel with 24-bits of ADC resolution. This device performs its functions in the simultaneous sampling mode. This module provides the sample rate accuracy of input channels up to ±100 ppm maximum. The USB-4431 device offers an input range up to ±10V. This model also provides input protection of ±60V.

This Sound and Vibration Device also has a single output channel, with a resolution of 24-bits, and 1 BNC signal connector. The output signal range of the analog output channel is ±3.5V. This model additionally provides an uncertain short circuit protection. The value of the minimum working load for this channel is 1 kΩ and the output resistance is 50 kΩ.  This device has an immense range of analysis capabilities, including Power Spectra, Zoom FFTs, and Fractional-Octave analysis.  

The USB-4431 is run using the NI-DAQmx driver software which is compatible with software packages/application development environments (ADEs) such as LabVIEW, LabWindows/CVI, or Measurement Studio. The device has a recommended warm-up time of 15 minutes, and should be externally calibrated at least once a year. 

The NI device weighs 1.5 lbs, and measures 5.6 x 7.1 x 1.5 in. in physical dimensions. It has a recommended operating temperature range of –30 °C to 70 °C, a storage temperature range of –30 °C to 70 °C, and a noncondensing operating humidity range of 0% to 95% RH.

The USB-4431 is available to be calibrated. While the recommended calibration period for individual parts varies, most parts should be calibrated either annually or every two years to ensure accuracy. If you need the USB-4431 calibrated, Apex Waves provides options. We offer high-quality NIST accredited calibrations through a 3rd party, with an average turnaround time of 1 to 2 weeks. When you order the USB-4431 with us, you can request basic (unaccredited) in-house calibration that will calibrate the part to the manufacturer specifications prior to being shipped. Call or email us today for more information about calibrating the USB-4431!