User guide

Depending on the quality and characteristics of the eye opening, the
resulting 50% threshold may deviate from the decision threshold defined in
the loaded setting.
•
Number of Valid Points
Change the Number of Valid Points, if you wish to use less or more
measurement points for the measurement.
•
Relative Time and Voltage
In the table at the bottom of the Parameters tab you can change measurement
points. Enter the Relative Time and Voltage according to the above settings.
Pass/Fail Tab
The Pass/Fail tab of the Properties dialog box allows you to specify the criteria
to decide whether the DUT passes or fails the test. You can change pass/fail
criteria without rerunning a test. The software only uses the criteria to rate the
results of a measurement.
N O T E
The pass/fail criteria do not control measurement execution. The measurement run
will be completed even if the measurement fails one or more of the criteria.
The Fast Eye Mask measurement has only one pass/fail condition: The bit error
rate. If desired, enable the BER Threshold and set a suitable threshold.
Advanced Analysis 6
Agilent J-BERT N4903B High-Performance Serial BERT 313