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AutoFocus User’s Guide
55
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The correlation between
Analyzer.ShowFocusEye
and
Analyzer.ShowFocusClockEye
is shown with the
following 3D-figure:
On the lower part of the figure, different data eye scans are cascaded. The data threshold level and the
sampling point are marked by black lines. The data threshold line also defines the level where the clock eye
picture would be normally placed within this graph.
Summary:
The clock eye scan shows a third dimension of multiple data eye scans.
•
The scan of
Analyzer.ShowFocusEye
keeps the clock threshold constant while
the data threshold is changed.
•
The scan of
Analyzer.ShowFocusClockEye
keeps the data threshold constant while
the clock threshold is changed.
Different data eye scans of
Analyzer.ShowFocusEye
Clock eye scan of
Analyzer.ShowFocusClockEye
Data threshold level