Specifications

WITE32 Release Notes Version 3.20
• Do Not Trim — do not perform track trimming.
• Erase Positive — perform track trimming by positive erasure, as in prior WITE32 versions.
• Erase Negative — perform track trimming by negative erasure.
• System Erase — perform track trimming using system erase options, which are accessible through the
Control | Band Erase dialog. For perpendicular recording system erase must be set AC Erase, thus enabling
AC erasure for track trimming.
4.5.4 Head Movement Minimization
1. In WITE32 versions prior to 3.20 the sequence of actions during the Alternative Overwrite measurement
was as follows:
• Erase track (perform preconditioning).
• Write the original signal.
• Measure
TAA
original
.
• Overwrite the track by the overwrite frequency.
• Measure
TAA
overwritten
.
2. This algorithm invoked head movements from and back to the write position between writing and
overwriting the signal. This could decrease the precision of the measurement because the offsets on which
the signal was written and overwritten could slightly differ.
3. In WITE32 version 3.20 a different algorithm is used in case Do Not Trim is selected as the track trimming
mode:
• Erase track (perform preconditioning).
• Write the original signal.
• Overwrite the track by the overwrite frequency.
• Measure
TAA
overwritten
.
• Erase track.
• Write the original signal.
• Measure TAA
original
.
4. This algorithm is already used in the WITE32 Overwrite test. Now the Alternative Overwrite is
implemented similar way.
4.6 Save Error Info Menu in WITE32 Error Message Dialog Box
The WITE32 standard error message dialog box is modified (see Figure 30). The new dialog now features the
Save Error Info pull-down menu, which allows saving the detailed error information to different destinations.
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