ELG for both MRE sensor height and resistance monitoring

Abstract

A method and system for lapping a magnetic transducer using an electrical lapping guide is presented. This includes rough lapping the transducer based on a first signal and fine lapping the transducer based on a second signal from a dummy transducer. The dummy transducer can have electrical properties substantially similar to electrical properties of the magnetic transducer. The first signal can include a stripe height calculated as a function of a reference resistor element and an analog resistor element. The second signal can include lap to reader resistance from the dummy transducer and a stripe height calculated from a reference resistor element and an analog resistor element. The dummy transducer can also provide process noise monitoring capability during lapping.

Dependencies are inferred from the claim text.