INSPECTION APPARATUS AND INSPECTION METHOD FOR MAGNETIC HEAD OR MAGNETIC DISK AND INSPECTION METHOD FOR MAGNETIC HEAD

摘要

An inspection apparatus and method for a magnetic head or a magnetic disk is conducted using a two-carriage method. In particular, the magnetic disk is rotated by a spindle, a test signal is written into the magnetic disk by one magnetic head mounted in one carriage which moves in the radius direction of the magnetic disk, and the test signal of the magnetic disk is read by the other magnetic head mounted in the other carriage which moves in the radius direction of the magnetic disk to inspect the performance of the magnetic head or the magnetic disk using the read signal. The sector pulses to determine servo timing at which servo burst signals preliminarily written into the disk are read are formed on the basis of a clock signal and an index signal generated along with the rotation of the spindle.