Pulses generated from servo stripes of a servo tape system are narrowed by
using non-linear gain enabling precise position of the read head.
Non-linear gain based on the amplitude of each pulse is applied to each
pulse to reduce jitter and distortion so as to more accurately position
the read head. A non-linear gain device comprising multipliers apply a
non-linear gain to a normal servo pulse signal prior, in one embodiment,
to the signal being applied to a qualifier. The non-linear gain device
further comprises a limiter so as to limit the gain beyond a certain
threshold to 1.0. The limitation of the gain to 1.0 renders the actual
amplitude of the pulse unchanged while narrowing the pulse and flattening
the baseline. The resulting pulse possesses less jitter and less
distortion qualities rendering the positioning of the read head more
precise.