Determination of correction function for reducing integral non-linearity of DSP-based event timer

Effective non-linearity correction is one of the most important problem for development of high-performance event timers based on Digital Signal Processing (DSP) methods. Suggested approach to resolving this problem is based on determination of a correction function using constant period test pulse sequences with seemingly random modular values. It is shown that such an approach allows achieving non-linearity correction with picosecond precision at test pulse sequence lengths quite acceptable for practical applications. Precision of DSP-based event timers can be improved in this way up to a few picoseconds.