Introduction

This document contains the release notes for WITE revision 1.43 from Guzik Technical Enterprises. Revision 1.43 is a maintenance release that fixes bugs involving the overwrite and pulse profile tests with high-speed patterns, and cartridges with integrated head amplifiers. Note that WITE 1.43 requires manual updates to be made to your pattern files.

All discussion in this document uses WITE version 1.42 as a baseline for comparison. For information about features and modifications prior to 1.42, please refer to the WITE user’s manual and to the release notes for previous revisions of WITE.

Bugs Fixed in WITE 1.43

The overwrite test occasionally gave incorrect results when running in "FastWrite" mode with a high-speed pattern. This works correctly in WITE 1.43.

The pulse profile test gave incorrect results when used with high speed patterns. This problem has been fixed in WITE 1.43. However, some patterns were updated. For this reason, you must manually copy the HFPRM.PDL and HFPRM.EPT files into every product directory. Also, if you have created any custom patterns for the high-speed pattern generator, they should also be modified. In particular, the pattern definition body should contain the statement am_length = 0,and the preamble should be a 40 microsecond sequence of 1’s and 0’s which matches those in the high-speed patterns (e.g. HSD) in the new HFPRM.EPT file.

When a cartridge with an integrated head amplifier was used, changing zones could result in spurious "TAA recalibration for head 0 is needed" messages. WITE 1.43 does not produce these messages.

Known bugs in WITE 1.43

Some bugs were found too late to be fixed for the 1.43 release and will be fixed in a later release. This section contains all known bugs that you are likely to encounter. A bug’s presence here means that we are aware of the problem and actively working to solve it. If you encounter a problem not on this list, please report it to Guzik customer support.

The "retest with next setup" option in the "Production | Grd/Norm" menu does not register results to the database after the first setup. It should not be used.

Some DOS applications interfere with communication with Guzik hardware and can result in unstable test results. Please exit all DOS applications before running WITE.