System, method, and apparatus for dynamic electrical testing...

Details System, method, and apparatus for dynamic electrical testing... System, method, and apparatus for dynamic electrical testing...

2007-10-30

2007-10-30

LeDynh, Bot (Department: 2862)

Electricity: measuring and testing

Magnetic

Magnetic information storage element testing

C324S211000, C324S212000, C324S262000, C369S052100, C369S053100

Reexamination Certificate

active

11107186

ABSTRACT:
A dynamic electrical tester (DET) for testing head gimbal assemblies (HGA) is disclosed. The DET simulates disk drive operation while significantly reducing tester capital investment. Multiple HGAs are tested simultaneously using modular spin stands with shared electronics. This design increases utilization of electronics and minimizes the effect of spindle start/stop time. A parallel array of spin stands with shared electronics is used to reduce tester component and materials cost by multiplexing between the spin stands. The DET has the significant advantage of reducing wait time by making use of the electronics while they are idle during mechanical-related delays. In addition, the DET includes more channels per test head that can readily switch back and forth between the products being tested.

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