Disk drive calibrating parameter by injecting noise signal and measuring off-track read capability

摘要

A disk drive is disclosed comprising a disk comprising a plurality of tracks, and a head actuated over the disk. One of the tracks is read to generate a read signal, and a noise signal is injected into the read signal to generate a noisy read signal. An off-track read capability (OTRC) is measured based on the noisy read signal, and a parameter of the disk drive is adjusted based on the OTRC.