{"product_id":"national-instruments-pci-4451","title":"National Instruments PCI-4451","description":"\u003cp\u003eThe National Instruments PCI-4451 is a versatile Dynamic Signal Acquisition Device (Part Number: 777534-01) designed for sound and vibration measurement applications. This device features two input channels and two output channels, making it ideal for high-channel-count applications. The PCI-4451 allows for synchronization with other devices within a PC using the RTSI bus and supports both analog and digital triggering capabilities. It boasts an impressive dynamic range of 90 dB, enabling high-precision measurements while minimizing distortion and noise effects. The device delivers ±0.1 dB of amplitude flatness from DC up to 95 kHz, with total harmonic distortion (THD) specifications of -90 dB at 1 kHz and -80 dB at higher frequencies. The analog inputs and outputs utilize oversampling delta-sigma converters, known for their linearity and capabilities in block divider antialiasing, which ensure superior specifications in terms of THD, signal-to-noise ratio (SNR), and amplitude flatness compared to conventional technologies. Users can take advantage of the PCI-4451's high-resolution capabilities—16-bit resolution and sampling rates ranging from 5.0 to 204.8 kS\/s—while leveraging overload detection, AC\/DC coupling, multiple board synchronization, and 8 TTL\/CMOS digital lines. Although the PCI-4451 has been declared obsolete by National Instruments, it remains available for purchase and repair through Apex Waves. This device includes a 68-pin VHDCI female analog I\/O connector and comes with a warranty of 2-3 years. Comprehensive user and maintenance manuals are available for download to support users in the implementation and upkeep of the device. For pricing information, please contact a sales representative.\u003c\/p\u003e","brand":"National Instruments","offers":[{"title":"Default Title","offer_id":46683837792492,"sku":"PCI-4451","price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0217\/1112\/6600\/files\/National_Instruments_Group_Photo_-_Final_Compressed_29369269-e392-4b7c-94f9-571d6b7e252d.jpg?v=1753243089","url":"https:\/\/www.industrialautomationco.com\/products\/national-instruments-pci-4451","provider":"Industrial Automation Co.","version":"1.0","type":"link"}