User guide

How to Change the BER Range of a Color
The bit error ranges are set automatically, but you can change these areas. To do
so:
• Move the handles of a color with the mouse (or your finger, if you are working
directly on the Serial BERT).
This is particularly useful if you have set the display to show the Pseudo Color
Plot.
By default, you may see a graph like the one below:
Now you may wish to know more precisely what happened between yellow and
red. After extending the range of yellow, such information becomes available.
Eye Opening - Reference
The Eye Opening measurement returns the results in a graphical and in a numerical
form. The following sections provide explanations of the measured parameters and
the display options that are specific to this measurement. Additionally, some
information is provided to explain the theoretical background behind.
Properties that can be specified on the various tabs of the Properties dialog box:
6 Advanced Analysis
294 Agilent J-BERT N4903B High-Performance Serial BERT