User guide

The following values are displayed for the current marker positions:
Table 23
Value Description
Upper Right Time and BER of the upper right
intersection of the displayed marker lines
(X2 and BER1)
Lower Left Time and BER of the lower left
intersection of the displayed marker lines
(X1 and BER2)
Delta Distance between the two vertical
marker lines on the time axis (X2-X1) and
distance of the two horizontal marker
lines on the BER axis (BER1-BER2)
The markers can be moved to keep track of the data.
A Gaussian marker is available for the following measurements:
• DUT Output Timing/Jitter measurement
• Output Levels measurement
The Gaussian marker allows to measure the normal distribution of measurement
results.
The distribution of random values is called normal, if it can be described by the
following formula:
Advanced Analysis 6
Agilent J-BERT N4903B High-Performance Serial BERT 237
The Gaussian Marker