Portfolio of work : High Speed Acoustic data acquisition card
The PCI24ADC16 is a high-resolution wide band acoustic data acquisition card in short PCIe form factor which enables a variety of acoustic and ultrasound signal processing functions, including active or passive sonar, vibration analysis, geophysics, and other test and measurement applications. The card provides 16 analog input channels, which it converts to digital data with 24-bit resolution, at sample rates up to 4MSPS. The design includes the ability to precisely synchronize multiple cards, allowing systems to be expanded to support hundreds of channels. Anti-aliasing inherent in the Sigma-Delta converters simplifies analog signal conditioning elsewhere in the signal path. The analog front end includes only adjustable gain and two pole anti-alias filtering. All other processing is performed using the on-board FPGA resources. The PCI24ADC16 includes a high precision frequency synthesizer which allows the user to generate a sample clock of virtually any frequency, with high precision. It can also accept an external clock for frequency coherent synchronization to peripheral equipment. When using the PCI24ADC16, data acquisition may be performed in either capture or continuous mode. In capture mode a specific number of samples are acquired following a trigger event, while in continuous mode the amount data acquired is virtually unlimited. In this mode acquisition is initiated and terminated by software commands.