National Instruments is introducing the NI PXIe-449x devices, which it describes as the most flexible high-channel-count dynamic signal acquisition (DSA) modules it has to offer. The modules provide AC/DC coupling both for sensor measurements with a microphone or accelerometer and voltage measurements from a tachometer or device under test, making it possible for engineers to use a single device for all of their sound and vibration acquisition needs.
Michael James, Vice President at Blue Ridge Research and Consulting, comments: "We need scalable data acquisition hardware and software that yields accurate data efficiently. Leveraging LabVIEW with the NI PXIe-449x DSA module fulfilled our needs by enabling us to customise our applications and perform real-time monitoring."
The NI PXIe-449x modules feature a choice of eight or 16 channels with 24-bit analogue-to-digital converters (ADCs) per channel and 113dB dynamic range. The large dynamic range minimises the noise floor, making it easy to detect even small vibration and acoustic signals. The NI PXIe-449x modules also provide software-selectable gains that help engineers configure gain on each channel for the best signal-to-noise ratio possible.
With the NI PXIe-449x modules, engineers can easily synchronise physical measurements of any type and correlate real-time events. The modules synchronise effortlessly with the NI SC Express family of data acquisition modules, which provide signal conditioning and connectivity for temperature, strain and high-voltage acquisition. The ability to combine the modules makes the PXI platform useful for structural test, design validation and other dynamic tests.
The NI PXIe-449x devices are also compatible with the NI Sound and Vibration Measurement Suite, an interactive software package for quickly acquiring, analysing and logging acoustic and vibration measurements. The suite includes the NI Sound and Vibration Assistant and NI LabVIEW analysis VIs. High-level, ready-to-run applications for performing non-destructive tests are included.
Go to www.ni.com/soundandvibration for more information about products and systems for prototyping and deploying sound and vibration analysers.