Specifications

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Chapter 3: Testing Logic Analyzer Performance
Configure the Logic Analysis System
Run Eye Finder
6 Select the Run button in the Eye Finder window.
7 Ensure that an eye appears for each bit near the recommended starting
position. Depending on your test setup, the eye position may vary. Any
skew between channel 1 and channel 2 of your pulse generator will cause
the eye position to shift to the left or right in the Eye Finder display. A
shift of up to 0.5 ns should be considered normal.
The important point is that your Eye Finder display should look similar to
the picture below (although it may be shifted left or right), and Eye Finder
must be able to place the blue bars in the narrow eye. (The example below
shows Eye Finder in the 250 Mb/s mode.)