User guide

You can use this drop-down list to specify whether you want to select a pre-defined
standard or a user-defined standard. All the available pre-defined standards will be
shown in this list. However, if you select the user-defined standard, press Load
button to locate the Jitter Tolerance standard. The user-defined standard uses the
same file format like the Jitter Tolerance Compliance measurement. See “Jitter
Tolerance Compliance - Concepts” on page 446.
N O T E
Selecting the Standard does allocate the required amount of jitter modulation on
the delay line being used. To avoid errors when changing the selection, it is
recomended to either select the corresponding bit rate first, or enable the PJ2 source
after setting the correct bit rate.
You can switch between sine, rectangular, or triangular jitter source waveforms.
You can specify the duration for sweeping the selected jitter profile/standard once.
You can specify the number of steps to fulfill a complete sweep. The start and stop
values are included. The valid range is between 2 to 100.
You can use this drop-down list to specify whether the frequency steps are log
equidistant (EQUidistant) along the periodic jitter curve or a frequency step
matches a corner frequency on the periodic jitter curve.
Bounded Uncorrelated Jitter Parameters
Bounded uncorrelated jitter is characterized by
• Data rate
Jitter Tolerance Tests 8
Agilent J-BERT N4903B High-Performance Serial BERT 425
Standard
Waveform
Sweep Time
Nr. of Steps
Step Distance