User guide

View Tab
The graph shows either the bathtub curve or the jitter distribution vs. time.
The BER graph (the bathtub) shows the BER vs. sample delay.
The BER graph can be viewed in either linear and logarithmic view. The logarithmic
view is shown above.
The DUT Output Timing/Jitter measurement calculates the jitter histogram as the
absolute of the derivative of the measured bit error rate (jitter=dBER/dt).
6 Advanced Analysis
256 Agilent J-BERT N4903B High-Performance Serial BERT
Bit Error Rate Graph
Jitter Histogram