Patent ID: 8338742

Claim:
A method for calibrating a test glide head assembly comprising: rotating a media test disk at a first rotation rate, said media test disk having an upper surface and a lower surface, said upper surface having a first array of asperities extending above said upper surface, said lower surface having a second array of asperities extending above said lower surface; locating a test glide head assembly over said media test disk, said test glide head assembly having an upper test glide head positioned over said first array of asperities, said test glide head assembly having a lower test glide head positioned over said second array of asperities; adjusting a gram loading of an upper test glide head gimbal assembly to provide contact of said upper test glide head with said first array of asperities, while said media test disk is rotating at said first rotation rate, by applying laser radiation to a first portion of said upper test glide head gimbal assembly; and, adjusting a gram loading of a lower test glide head gimbal assembly to provide contact of said lower test glide head with said second array of asperities, while said media test disk is rotating at said first rotation rate, by applying laser radiation to a first portion of said lower test glide head gimbal assembly.