Abstract
As it currently stands, waveform generators are being employed in many diverse areas such as communication systems, radar applications, simulation, and testing. The arbitrary waveform generator introduced in this paper consists of a DSP (Digital Signal Processor), a FIFO memory, a video palette, and a PC interface. A program running on the PC creates a digital representation of a waveform according to user parameters and sends it to the DSP's RAM. The DSP algorithmically converts the digital representation to a point-by-point representation of the desired analog signal. The data points are sent to the FIFO buffer, which latches the data to the video palette that serves as the digital to analog converter. The system uses JTAG and a high-speed serial port interface to communicate with the PC, to allow for readily programmed signals. In addition to the production of traditional signals such as sinusoids and squarewaves, a mathematical tool known as splines will be employed to aid in the development of customized arbitrary waveforms. A picture of our new device is presented in the paper, in addition to laboratory measurements.
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