PCI-4552

National Instruments PCI-4451 / PCI-4452 / PCI-4454 Dynamic Signal Acquisition Board
Features

• High Performance Analog I/O Devices
• Dynamic Signal Acquisition (DSA)
• High 16-bit Resolution, Inputs are Simultaneously Sampled
• High Accuracy Delta-Sigma Oversampled Converters
• Low THD, High SNR, and Excellent Flatness

The PCI-445X devices are high-performance, high-accuracy analog I/O devices for the PCI bus. These devices are members of the Dynamic Signal Acquisition/Analysis (DSA) product family and are specifically designed for demanding dynamic signal acquisition applications. The PCI-445X family features 16-bit simultaneously sampled input with a maximum rate from 51.2 kS/s to 204.8 kS/s, optional 24-bit simultaneously updated output at up to 51.2 kS/s, an optional eight lines of TTL-compatible digital I/O, two 24-bit counter/timers for timing I/O, and multiple triggering modes including external digital trigger. See Appendix A in the manual, Specifications, for details about the PCI-445X.

The analog input and analog output circuitry both use oversampling delta-sigma modulating converters. Delta-sigma converters are inherently linear, provide built-in brick-wall anti-aliasing/imaging filters, and have specifications that exceed other conventional technology for this application with regard to total harmonic distortion (THD), signal-to-noise ratio (SNR), and amplitude flatness. You can use these high-quality specifications and features to acquire or generate signals with high accuracy and fidelity without introducing noise or out-of-band aliases.

Applications for PCI-445X devices include audio signal processing and analysis, acoustics and speech research, sonar, audio frequency test and measurement, vibration and modal analysis, or any application requiring high-fidelity signal acquisition or generation.