The Eye Diagram generates a three dimensional graph of the bit error
rate (BER). This measurement helps in determining and analyzing the
quality of the DUT’s signal output. The Eye Diagram results comprise
of voltage(y), time(x), and BER(z).
The Eye Diagram, and the table of Automated Eye Parameter
Measurement form simultaneously. They become more precise with the
increasing number of measured bits.
The following graph shows how the Eye Diagram has been integrated
on the J-BERT N4903A High-Performance Serial BERT.
Methods of Representations
There are two methods of representing the eye diagram:
•
Waveform
•
Contour
Waveform
Waveform is the shape, and form of a signal. The waveform graph shows
the periodical variation of voltage against time.
The waveform in the Serial BERT is similar to the one in the
oscilloscope. In this case, the waveform initially gives a coarse, but quick
5
Advanced Analysis
250
Agilent J-BERT N4903 High-Performance Serial BERT
Summary of Contents for J-BERT N4903
Page 1: ...S Agilent J BERT N4903 High Performance Serial BERT User Guide s Agilent Technologies...
Page 68: ...2 Setting up Patterns 68 Agilent J BERT N4903 High Performance Serial BERT...
Page 158: ...4 Setting up the Error Detector 158 Agilent J BERT N4903 High Performance Serial BERT...
Page 314: ...6 Evaluating Results 314 Agilent J BERT N4903 High Performance Serial BERT...
Page 374: ...7 Jitter Tolerance Tests 374 Agilent J BERT N4903 High Performance Serial BERT...
Page 394: ...8 Solving Problems 394 Agilent J BERT N4903 High Performance Serial BERT...
Page 434: ...Index 434 Agilent J BERT N4903 High Performance Serial BERT...
