User guide

With ‘middle of eye’, the center of the eye coincides with the center of the screen.
• Transition
With ‘transition’, the transition of the eye coincides with the center of the screen.
Set the criteria for the number of eyes.
• 1.5ui
This option displays ‘1.5’ eyes on the graph. The transitions of the complete eye
are placed such, that, they show ‘0.25’ eyes on both sides. So, the total number of
displayed eyes is 1.5.
• 2ui
This option displays ‘2.0’ eyes on the graph. The transitions of the complete eye
are placed such, that, they show ‘0.5’ eyes on both sides. So, the total number of
displayed eyes is 2.0.
View
Set the criteria for calculating the eye width, eye height, JPP, JRMS, cross voltage
according to the BER threshold selected.
• 0 Errors
To see ‘0 errors’ select the option. This gives the results according to the last
measured contour for the current measurement. This is more significant in the
case of deep BERs.
• BER Threshold
Enter the BER threshold at which the five results, eye width, eye height, JPP, JRMS,
and cross voltage, will be calculated.
The show checkbox displays the contour at which the results are calculated.
Set criteria for transition time
• 10/90
Measures horizontal scan from 10% to 90% of the signal amplitude.
• 20/80
Measures horizontal scan from 20% to 80% of the signal amplitude.
Set the criteria for eye boundaries. Total is 100% of the display screen. These are
applied for the level related parameters, for example, 0-level, 1-level, Signal to Noise
ratio, Eye Amplitude, and so forth.
• Left Boundary
Advanced Analysis 6
Agilent J-BERT N4903B High-Performance Serial BERT 333
Number of eyes
Calculate Measurement
Parameters
Transition Time
Eye Boundaries