User guide

The Jitter Setup area allows you to enable a jitter source, to change its most
commonly used jitter parameters directly or to go into advanced edit mode by
pressing the corresponding Edit button.
Spread Spectrum Clock
The Spread Spectrum Clocking setting controls the pattern generator's spread
spectrum (SSC) clocking feature. When the SSC is enabled, it impacts the Data
Out, Clock Out, Aux Data Out, and Trigger/Ref Clock Out ports.
The spread spectrum clock is characterized by:
• Deviation
• Frequency
• Type
• Profile
If the deviation type centerspread is selected, the deviation can be changed in two
different ways:
8 Jitter Tolerance Tests
416 Agilent J-BERT N4903B High-Performance Serial BERT