Method and device for spectrally pure, programmable signal generation

摘要

A method for generating a waveform at a particular frequency in which a segment RAM depth is determined based on the relationship between the frequency and a variable clock value, a RAM based memory system is provided with waveform information, and the waveform is sequentially generated from a combination of the waveform information in the RAM based memory system from a first memory site to a memory site dependent on the segment RAM depth. The generated waveform is filtered to obtain only the waveform at the desired frequency. The RAM based memory system is provided with the waveform information by dividing each desired waveform into segments depending on the clock value and storing each segment in a respective memory site. An analog to digital converter may be evaluated by directing the desired waveform to the analog to digital converter. The generated waveform is tuned in the filter to a center frequency if it is a sinewave or a tuned squarewave.