04 | Keysight | N4980A Multi-Instrument BERT Software - Data Sheet
Graphical results
Any BERT can give you measurements in a table of results. The N4980A multi-instrument
BERT software provides more with graphical results which are easier to interpret—allowing
you to quickly gain insight into what is happening in the device under test.
Figure 6. Graphical measurement results.
Strip chart view shows history of instantaneous BER. Device setting or mode changes
which impact bit error performance can be instantly seen in real time, without needing to
analyze a column of numbers.
Figure 7. Bathtub view.
Bathtub view provides a quick visualization of eye opening at various BER confidence
levels. Eye diagrams measured with real time or sampling scopes simply cannot capture
enough data in a reasonable amount of time to accurately provide this information.
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