Specifications
56
Chapter 3: Testing Performance
Configure the logic analysis system
move it to the recommended starting position of 0.6 ns. All of the blue bars
will follow.
8 Select Run Eye Finder (the large green bar).
9 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.
Re-aligning a stray channel
If the blue bar for a particular bit does not appear in its eye near the
recommended starting position, then do the following steps to realign the
sampling position of the stray channel. In the following example, the
sampling position of one channel (Label1 [2]) must be realigned with the
sampling position of the other channels. (The following example shows the