Keysight Technologies 16861A Service Manual page 48

3 Testing 16860 Performance
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In the dialog, set Do full time/voltage scan and Show time/voltage diagram.
Run Eye Scan by clicking the Run This Measurement button.
If the scan does not fill the scan area, right click in the scan area and select Autoscale all.
The waveform should now fill the Eye Scan area.
Move the sample position of all 4 data bits into the Eye between 0 and -1ns. Using the mouse,
grab the vertical lines and move them into the correct eye.
Keysight 16860 Series Portable Logic Analyzer Service Guide