With the release of this module, engineers now can simultaneously generate and acquire high-accuracy dynamic signals for sound and vibration measurements
National Instruments has announced the NI PXI-4461, which it says is the industry's first 24-bit analogue input/output data acquisition module for the PXI platform.
With the release of this module, engineers now can simultaneously generate and acquire high-accuracy dynamic signals for sound and vibration measurements.
"We chose the NI PXI-4461 as the cornerstone of our audio test platform because of its rich feature set and outstanding accuracy," said Juan Reyes, application engineer for Sony Audio in Mexico.
"The 120dB dynamic range of the PXI-4461 enables us to perform audio tests faster and with greater accuracy than any other audio test products available".
The PXI-4461 module features 24-bit delta sigma converters that deliver nearly 120dB dynamic range over an input bandwidth of 92kHz at 204.8kS/s.
Its two differential output channels generate frequencies up to 92kHz, making it ideal for shaker control and stimulus response tests such as swept-sine.
To ensure the highest accuracy for precision audio measurements, the PXI-4461 dynamic signal acquisition module includes differential inputs, anti-aliasing protection and integrated electronic piezoelectric (IEPE) conditioning for microphones and accelerometers.
"National Instruments is dedicated to offering customers the latest technology available," said Tim Dehne, NI senior vice president of research and development. "We continue to advance our dynamic signal acquisition hardware by offering 24-bit generation capabilities in addition to 24-bit analogue acquisition.
"With this new DSA module for PXI, engineers can use the PXI platform to make state-of-the-art, high-precision audio measurements". Engineers can accelerate the development of sound and vibration applications by combining the PXI-4461 module with Labview 7 Express graphical development software and the new Labview Sound and Vibration Toolkit 3.1, with its 50 ready-to-run examples. Engineers can use these tools to create complete systems for frequency response measurements, swept-sine analysis or distortion characterisation in applications such as noise, vibration and harshness (NVH) testing and audio testing.
