User guide

The delay lines show markers which indicate the used and the remaining jitter
amplitude in UI. Colored bars allow you to judge the impact of each jitter component
on the total jitter.
UI is the acronym for Unit Interval. One UI is the present clock period.
Sinusoidal Jitter is not generated by a delay line but by modulating the clock.
Sinusoidal Jitter and Spread Spectrum Clock cannot be used together with residual
Spread Spectrum Clock because they share the same modulator.
N O T E
The delay line display for SJ/SSC/rSSC is set accordingly with the selected
configuration.
Jitter Configuration Area
The Jitter Configuration area allows you to select between the following jitter
configurations (the corresponding jitter sources are mutually exclusive):
• Spread Spectrum Clock (SSC) or residual Spread Spectrum Clock (rSSC)
N O T E
That SSC and rSSC are licensed options (J11).
• Spectrally distributed Random Jitter (sRJ), or Random Jitter (RJ) and Bounded
Uncorrelated (BUJ)
Jitter Setup Area
The Jitter Setup area consists of seven colored rows that keep you informed about
the present jitter composition of:
• Sinusoidal Jitter
• Spread Spectrum Clock
• Residual Spread Spectrum Clock
• Periodic Jitter 1
• Periodic Jitter 2
• Bounded Uncorrelated Jitter
Jitter Tolerance Tests 8
Agilent J-BERT N4903B High-Performance Serial BERT 405