Company develops highly flexible scalable data acquisition system
31 July 2002
Computer/Embedded Technology
Data acquisition and digital signal processing requirements are constantly challenging the boundaries of what technology can deliver. In the latest addition to its range of rapid development platforms, Parsec has completed the development of a highly scalable, flexible and programmable data acquisition and digital signal processing system.
Called the 'mercury Signal Processing System' (mSPS), and using the latest FPGA technology from Altera, mSPS employs high-speed serial links to transfer realtime data from up to 256 channels of ADC and DACs at speeds of up to 622 Mbps to a central processing node.
Technical overview
The mSPS is built around a 19" frame and is based on the 6U Compact PCI standard. The system is scalable to up to 256 channels of simultaneous sampling ADC and DAC. ADC and DAC data is routed to/from a central FPGA-based processing node. The FPGA processing node also handles high data rate pre-and-post processing functions. A Texas Instruments TMS320C6701 DSP interfaces to the FPGA processing node and performs DSP functions such as FFT on selected data samples. A Compact PCI-based host PC completes the system with interfaces to the FPGA processing node and DSP. The host PC performs functions such as display and data storage.
Key specifications are:
* Modular cPCI-based architecture.
* IEEE 1596.3-based serial links for data transfer.
* 8 to 256 channels ADC and 8 to 256 channels DAC.
* 200 kSa/s and 16-bits.
* Highly configurable clock and trigger network.
* Individual ADC and DAC components for each channel.
* Filter and isolation circuits on rear interface module.
* FPGA controlled data sampling and sequencing (simultaneous sampling on all ADC channels; simultaneous triggering on all DAC channels).
* Realtime capturing and buffering of signals on HW level.
* Realtime pre-processing in FPGAs.
* TMS320C6701 DSP processing on-board.
* PC host signal display and storage capabilities.
For more information: Franco Giangregorio, Parsec, 012 349 2282, franco@parsec.co.za
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