Specifications

WITE32 Release Notes Version 3.20
this entry. This entry can be automatically updated by the Micro Actuator Stroke test, which measures the
actual range.
• The Voltage Range (A) Max text box specifies the positive voltage applied to a Micro Actuator device.
• The Voltage Range (B) Min text box specifies the negative voltage applied to a Micro Actuator device.
• The Voltage Range (C) Middle text box specifies the middle point voltage (in Volts). Bipolar micro actuator
control voltage is applied in reference to this point.
• The Voltage Range (D) Range text box specifies the maximum control voltage range (in Volts) allowed to
be applied to a Micro Actuator device middle point. Control voltage saturates if it goes above Range/2 or
below –Range/2.
4.1.7 Track-to-Track Head Positioning
Starting from the WITE32 version 3.20, the trajectory of the head movement from the initial to the destination
track during the track-to-track head positioning simulates the trajectory in a hard drive. The head skew angle is
calculated at each trajectory point according to the skew angle configuration defined in the product parameters.
In previous revisions of WITE32 the head skew angle was calculated only for the initial and the destination
tracks, and the spinstand used a linear trajectory to move the head from one track to another.
4.1.8 Balancing
In WDCP2002 for the previous WITE32 versions, the Screw Calibration tab was disabled for the Custom 3
Screws and Custom 6 Screws balancing types and the screw calibration was always the first step in the balancing
procedure for both these types. In the WITE32 version 3.20, the Screw Calibration tab is enabled for these two
balancing types. Now, you can calibrate the screws only once – after the balancing cup installation.
4.2 Guzik Servo
The following modifications of Guzik Servo are implemented in the WITE32 version 3.20:
• Head Bandwidth selection for the RWA models with Servo-3 is added (see Section 4.2.1).
• Reset Index Skew control in the Servo Erase Configuration dialog box (see Section 4.2.2).
• Modifications in the Servo Calibration dialog box (see Section 4.2.3).
• Cool down delay in the Servo Calibration operation (see Section 4.2.4).
46 Guzik Technical Enterprises