Relationship Between Equalized SNR and Jitter—Theory and Application to PMR and HAMR

A simple analytical relationship between equalized signal-to-noise ratio (SNR) and jitter is derived theoretically. Equalization is applied to the spectra of pseudorandom sequence signals, by whitening the frequency content of the noise. Jitter is evaluated in the frequency domain with square waveform signals. We verify experimentally that, for a wide range of linear densities, we can predict well-equalized SNR (and thus overall system performance) by using the measured jitter value.