Patent ID: 8174781

Claim:
A method for screening a magnetic-recording head for use as a manufacturing-qualified, magnetic-recording head utilizing a simulated-cross-track-gain profile of said magnetic-recording head, said method comprising: measuring a track profile of said magnetic-recording head; providing said simulated-cross-track-gain profile of said magnetic-recording head synthesized utilizing said track profile of said magnetic-recording head; calculating a peak-to-peak value of said simulated-cross-track-gain profile; applying a selection criterion based on said peak-to-peak value of said simulated-cross-track-gain profile to screen said magnetic-recording head for use as said manufacturing-qualified, magnetic-recording head, wherein providing said simulated-cross-track-gain profile of said magnetic-recording head further comprises: simulating a first simulated-servo-burst-signal profile, a second simulated-servo-burst-signal profile, a third simulated-servo-burst-signal profile and a fourth simulated-servo-burst-signal profile synthesized utilizing said track profile of said magnetic-recording head; simulating a simulated-P-position-error-signal profile as a function of simulated offset from track-center synthesized utilizing said first simulated-servo-burst-signal profile and said second simulated-servo-burst-signal profile of said magnetic-recording head; simulating a simulated-Q-position-error-signal profile as a function of simulated offset from track-center synthesized utilizing said third simulated-servo-burst-signal profile and said fourth simulated-servo-burst-signal profile of said magnetic-recording head; and simulating said simulated-cross-track-gain profile as a function of simulated offset from track-center synthesized utilizing said simulated-P-position-error-signal profile and said simulated-Q-position-error-signal profile; and wherein applying said selection criterion further comprises: accepting said magnetic-recording head as said manufacturing-qualified, magnetic-recording head if said peak-to-peak value of said simulated-cross-track-gain profile of said magnetic-recording head is less than about 2.5 dB.