Patent ID: 7023204
Filing Date: 2006-04-04
Classification: G01Q,G01R,G11B

Abstract:
1. A magnetic imaging microscope test system for characterization of read and write heads used for magnetic recording, comprising: a scanner assembly; a work piece holder for holding a work piece to be tested; said scanner assembly and said work piece holder being positionable relative to each other; a probe arm cantilevered from said scanner assembly and extending to a probe arm free end situated adjacent said work piece holder; a probe head at said probe arm free end, said probe head being configured to scan a work piece on said work piece holder while contacting engagement is maintained between said probe head and said work piece; a magnetic device associated with said probe head, said magnetic device being configured to magnetically interact with said work piece for obtaining a magnetic image of said work piece; circuitry adapted to produce a time-varying stimulus signal to selectively drive said work piece or said magnetic device at a selected frequency for characterizing said work piece; and circuitry adapted to obtain a readback signal from whichever of said work piece or said magnetic device is not driven by said stimulus signal, said readback signal being induced by said stimulus signal.