528 Keysight M8000 Series of BER Test Solutions User Guide
8 Working with Measurements
The Minimum Number of Errors indicates the minimum number of hits
required to plot the contour.
Eye Diagram Measurement Parameters
Acquisition Parameters
Name Description
Analyzer Location or location group against which the data acquisition is
performed.
Persistence Set the criteria for Persistence.
Name Description
Infinite With ‘Infinite’, the eye appears with the Automated Eye Parameter
Measurement, and the results keep on improving in accuracy, as
more number of points get measured and represented on the
diagram along with the deeper BER values. The BER threshold in
the Graph Tab decides how long the measurements will be done at
the boundaries of the eye. Once the measured points exceed the
BER Threshold defined by the user, the measurement is done deep
inside the eye.
This is a default setup for persistence.
Fixed Time (Secs) With ‘Secs’, the measurement runs for the specified time, and the
measurement automatically restarts showing only the refined eye
diagram. To stop the measurement, click the abort button.
Number of eyes 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.
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