Xante ScreenWriter 3 Manual page 127

Note: Calibration page blocks are numbered from 0 to 255.
4. Click Graph to display a curve of your printer's linear curve.
5. Click Linearize to continue. The Linearization window
reappears (fig. 4.25).
Note: If you need to stop linearization (for example, to
6. Click Save (fig. 4.25) if you want to save the data file for
future use. Then specify a new file name and select a folder for
saving the file. Click Save. Otherwise, skip to step 7.
7. Click Close. The Linearization window closes.
Note:
Advanced Gamma Control
If you are an expert user, you may want to adjust image lowlights,
midtones, highlights, and details in a gamma curve using the
Advanced option in the Linearization window.
Note: You cannot see Advanced window adjustments on screen.
Unless you are an advanced user, you should make these
adjustments through an application.
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You may have to check several blocks to find the one
that most closely matches the percentage in the
Densitometer Data Entry window.
Also, it is not necessary to measure for each coverage
value listed in the Densitometer Data Entry window,
but it is recommended to do so to achieve more
accurate results.
change the media type), you can click Cancel to stop.
If you want to verify linearization, click the Verify
Calibration button (4.25) before you close the
Linearization window. When this page prints, compare
it to the original calibration page to verify the gamma
correction; you should see an improvement in gray
scale progression.
PC Setup 4-41