| 摘要 |
A glide testing apparatus includes a motor assembly, a sensor element, a positioning assembly, and detection circuitry. The motor assembly rotates a magnetic disk about an axis. The sensor element produces a detection signal in response to disk surface characteristics. The positioning assembly positions the sensor element at selected radii from the axis of disk rotation, and the detection circuitry receives a signal from the sensor element to detect movement of the sensor element between a first zone on the disk and a second zone on the disk. Methods of distinguishing between two adjacent zones on a magnetic disk include rotating a magnetic disk about an axis and positioning a sensor element at selected radii from the axis of rotation. The methods can also include producing a signal in response to variations in the distance between the sensor element and the disk surface, and determining if the sensor element is positioned in a first disk zone or in a second disk zone by analyzing selected zone signal characteristics that distinguish the first disk zone from the second disk zone.
|
