Product Details

The NI PCI-4461 779307-01 is a BNC version high-performance 24-bit DSA dynamic signal card for PCI bus, designed for sound and vibration measurement with synchronous excitation and acquisition. This part number 779307-01 comes with BNC front connectors, paired with the Sound and Vibration Toolkit package, which brings convenient wiring for test transducers and simplifies bench setup. It includes 2 analog input channels and 2 analog output channels, all channels support simultaneous sampling and updating up to 204.8 kS/s, and achieves 118 dB dynamic range for capturing faint acoustic and vibration signals. It integrates built-in IEPE constant current excitation and TEDS sensor recognition function, which can automatically read sensor calibration information and reduce manual configuration errors during testing.

Each analog input supports six adjustable gain levels, covering input ranges from ±316 mV to ±42.4 V, and each channel can independently switch AC or DC coupling. Differential and pseudodifferential input modes are available to suppress ground loop noise in industrial environments. Built-in digital anti-aliasing and anti-imaging filters guarantee clean signal quality for FFT spectrum analysis, frequency response test and order tracking. It supports multiple trigger types including analog trigger, digital trigger and pre-trigger. By using the RTSI bus, multiple cards can be synchronized to expand measurement channels for large-scale test systems. The BNC interface design provides stable connection and convenient plugging for accelerometers, microphones and other sensors, which is widely preferred in laboratory test stations.

This dynamic signal card is widely used in automotive NVH testing, structural modal analysis, shaker closed-loop control, loudspeaker acoustic calibration, rotating machinery fault diagnosis and aerospace vibration screening. It is fully compatible with NI-DAQmx driver, LabVIEW, LabWindows/CVI and C/C++ programming environments, and the matched Sound and Vibration Toolkit helps engineers quickly build automated stimulus-response test sequences. As an obsolete legacy measurement hardware, NI PCI-4461 779307-01 is mainly used for maintenance and upgrade of existing sound and vibration test benches. It can maintain stable long-term measurement accuracy, retain mature test procedures and avoid high cost of rebuilding the whole measurement framework. Its reliable performance supports unattended batch testing and consistent data comparison for product quality verification.