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RIGOL Chapter 10 Real-time Eye Diagram and Jitter Analysis (Option)
10-2 DS8000-R User Guide
Real-time Eye Analysis
An eye diagram is a view of a signal. A real- time eye accomplishes this by acquiring
data, performing clock recovery, and then superimposing (folding) successive unit
intervals within a single plot. This is a statistical view in the form of a color grade. The
eye analysis function is usually used to observe the waveforms of the Receive signal
to analyze the impact of inter-symbol interference (ISI) and noise on the system
performance.
Note: The eye diagram can only be obtained when the horizontal time base is less
than or equal to 100 ns/div.
You can go to the "Eye" setting menu through the following ways:
âš« Click on the function navigation icon at the lower-left corner of the screen to
open the function navigation. Then, click on the "Eye" icon to open the
"Eye" setting menu.
âš« Click on function navigation icon at the lower-left corner of the screen to
open the function navigation. Then, click Measure → Analyze → Eye
Analysis to enter the "Eye" setting menu.
âš« Click on the function navigation icon , and select Measure. Then click Add.
In the displayed measurement category area, click to select "Analyze", and then
select "Eye" to open the "Eye" setting menu.
âš« Click the auto measurement label "MEASURE" at the top of the screen to enter
the measurement setting menu. In the measurement category area, click the
"Analyze" tab to select the "Eye" option to enter the "Eye" setting menu.
To Enable or Disable the Eye Analysis Function
In the "Eye" setting menu, click the Enable key continuously to enable or disable the
eye diagram analysis function.
To Select the Eye Source
Click Source in the "Eye" setting menu to select the desired eye source. The analog
channel (CH1-CH4) can be selected as the eye source.
To Set the Threshold
In the "Eye" setting menu, click Threshold to enter the threshold setting menu.
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