Agilent Technologies N4906B Serial BERT User Manual page 164

Evaluating Results
164
The table in the top half of the Eye Results window additionally lists
the following values:
• Eye Voltage Center
One of two components of the sampling point, the 0/1 decision
threshold (eye voltage center) is displayed here.
• Eye Data Input Delay
One of two components of the sampling point, the data input delay
is displayed here.
• Alignment Threshold
The alignment BER threshold is displayed here. This threshold was
used to define the eye edges and the above eye results.
• Delta Error Ratio
The BER measured during the previous 200 ms is displayed here.
Agilent N4906B Serial BERT, User's Guide, October 2005
Eye Measurements