Table of Contents
Advertisement
Chapter 3: Testing Logic Analyzer Performance
Testing the module using a 16700-series Mainframe
Adjust sampling positions using Eye Finder
1 In the Setup and Trigger window, select the Sampling tab, then select the
"Sampling Positions..." button. The Eye Finder window will appear.
2 From the menu bar in the Eye Finder window, select Results.
3 Select "Remove All Eye Finder Data" if this selection is available (if it is
not ghosted).
4 Select "Label1 (4 channels)", then select Expand.
Align the blue bars vertically
5 If the blue bars in the Eye Finder display are not vertically aligned:
a In the "Label1 (4 channels) row, grab the right-most blue bar with the
mouse pointer and move it all the way to the left. Release the mouse
button. This will vertically align all of the blue bars.
6 Select the Sampling Positions tab in the Eye Finder window.
7 Using the mouse pointer, grab the blue bar for "Label 1 (4 channels)" and
move it to the recommended starting position of -2.8 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
68
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
Advertisement
Table of Contents
