• New features in WITE 1.261
• Bugs fixed in WITE 1.261
• Known bugs in WITE 1.261

• A head stack using the MR04B0C0 amplifier is now supported.
• WITE 1.261 includes enhanced support (new board) for VM61612 amplifier.

Bugs fixed in WITE 1.261

The overwrite test gave unstable and unreliable results. The WITE 1.261 overwrite test is stable. Also, the restriction requiring the parametric filter cutoff frequency to be higher than the overwrite frequency has been removed. It should still be at least twice the LF signal frequency.

The MR impedance test often failed to apply calibration factors. Inaccuracies of approximately 5-15% were observed. WITE 1.261 always applies calibration factors correctly.

The spectrum analyzer test always set the system overwrite filter to filter #1 after testing. WITE 1.261 does not alter the system overwrite filter.

Some older S1701MP spinstands failed to start, reporting a linear scale positioning error. WITE 1.261 is compatible with these spinstands.

Some unusual drive parameter configurations could cause spurious limit sensor detection errors. This does not occur with WITE 1.26.

The popcorn test gave incorrect results. It works properly in WITE 1.261.

The head stack using 2*SSI1570 + VM7170 amplifiers is correctly supported in WITE 1.261.

Known bugs in WITE 1.261

Some bugs were found too late to be fixed for the 1.261 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.

If WITE is aborted under some error conditions, it will leave modules running. Re-running WITE will result in immediate failure to load some modules. To solve this problem, restart the PC and run WITE again.

Buttons on some forms (e.g. the zone change buttons on the dashboard) are enabled when other operations are still in progress. Pressing these buttons while an operation is pending can cause problems. To avoid these problems, always wait until previous operations are completed before starting new operations.

TAA positive and negative asymmetry are calculated and reported correctly, but they are not displayed on the saturation test plot.

The TAA asymmetry test results are correct, but they are incorrectly displayed with the unit of measurement as mA rather than mV.

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.

When WDCP is run from within WITE under Windows 3.x, an error dialog appears saying "Cannot find DSPHOST.DLL." This message does not affect operation and can be ignored.

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