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Apparatus for measuring vibration characteristic of head gimbal assembly

  • US 20070169556A1
  • Filed: 01/18/2007
  • Published: 07/26/2007
  • Est. Priority Date: 01/20/2006
  • Status: Active Grant
First Claim
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1. An apparatus for measuring the vibration characteristic of a head gimbal assembly, comprising:

  • a shaker configured to shake the head gimbal assembly;

    a fixture configured to fix the head gimbal assembly to the shaker;

    a first laser Doppler vibrometer configured to detect a vibration velocity of the shaker; and

    a second laser Doppler vibrometer configured to detect a vibration velocity of a head of the head gimbal assembly,the apparatus finding the vibration characteristic of the head gimbal assembly according to the detected vibration velocities.

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