User guide

Choose between logarithmic and linear scale for displaying the frequencies.
Display the power either in a logarithmic (dB) or linear scale.
Show the entire frequency range or zoom in one part of it.
To analyze the graphs at a particular point, you can use the markers. Additionally,
you can display all related values for the markers in the marker readout.
Pressing the Reset Markers button will set the markers back to the default
positions.
Several zoom factors are available. When you show the zoom graph, you can also
allow the zoom graph to track the mouse (or your finger, if you are working directly
on the Serial BERT).
Explanation of the Numerical Results
The measurement provides numerical results for:
• Bit Error Rate
• Total Power
• Noise Power
• The Frequency and total power for up to the 16 frequencies with the highest
total power.
You can set the number of top frequencies to be evaluated in the View tab (see
“View Tab” on page 256 for details).
Advanced Analysis 6
Agilent J-BERT N4903B High-Performance Serial BERT 359
Frequency Scale
Power Unit
Frequency Axis Range
Markers
Zoom