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Direct digital synthesis board offers powerful signal generation

dSPACE has introduced the DS2302, a direct digital synthesis board that can efficiently generate and measure complex signals when testing electronic control units. The device has many options to generate demanding signal forms such as those required for intelligent wheel speed sensors. The APU (angular processing unit) slave interface for each channel on the board, together with the company’s Fast Analog Capturing Module and extension options, can obtain a precise measurement of injection control voltages. This makes it easier to calculate the injection quantities for direct-injection engines, even with variable valve lift. The board’s enhanced performance is derived from its enlarged memory and from the signal processors like TMS320VC33 that rapidly increase the device’s speed. The board contains six digital signal processors (DSPs) and is designed for fast and flexible generation of curve behaviours. The signal parameters can easily be changed on-the-fly by a master processor board or from the host PC. Data exchange between the main application and an application running on one of the six DSPs is done by C programming.