The National Instruments PCI-4461 (Part Number: 779307-01) is a state-of-the-art sound and vibration data acquisition module engineered for high-precision applications. This device features synchronous two-channel dynamic signal generation and concurrent two-channel signal acquisition, offering six selectable gain settings to optimize input range. The PCI-4461 supports programmable AC/DC coupling and integrates electronic piezoelectric (IEPE) support, allowing for accurate measurements with a range of transducers, including microphones and accelerometers. Its versatility makes it ideal for various applications, such as sound testing, automotive testing, noise, vibration, and harshness (NVH) analysis, and machinery condition monitoring.

Equipped with 24-bit resolution analog-to-digital converters (ADCs), the PCI-4461 can sample at rates up to 204.8 kS/s, accommodating standard audio rates including 44.1 kS/s, 48.0 kS/s, and 96.0 kS/s. It features a Delta-sigma ADC type, ensuring high dynamic range of 118 dB with low noise and distortion characteristics. The input stage accepts both differential and single-ended signal connections, enhancing measurement fidelity. The device boasts impressive amplitude flatness of ±0.1 dB across a frequency range of DC to 92 kHz and a total harmonic distortion (THD) of -107 dB.

The PCI-4461 is a dynamic signal acquisition product compatible with the NI-DAQmx driver software, which requires an Application Development Environment such as NI LabVIEW, ANSI C, or Visual Basic .NET. The module is equipped with BNC female analog I/O connectors and an SMB male digital trigger connector, ensuring robust signal interfacing. It measures 6.9 x 3.9 inches, weighs 8.0 ounces, and operates within a PCI or PXI bus interface at 3.3 V or 5 V. A three-year warranty is included, and user manuals are available for download. For pricing inquiries, please contact a sales representative.