The USB-9231 is a 24-bit low-speed dynamic signal capture USB module with eight analog input channels and an analog input range of up to +/- 5V, providing simultaneous sampling of 51.2 kS/s per channel. The USB-9231 also features software-selectable AC or DC coupling input settings and built-in 2 mA excitation current to measure integrated electronic piezoelectric (IEPE) sensors such as accelerometers and microphones.

With a cDAQ 8-slot chassis, it can be expanded up to 64 channels.

It can be equipped with DynaView vibration sound spectrum analysis software to form a 8 to 64 channel spectrum analyzer.