User guide

• Amplitude
• PRBS polynomial
• Low pass filter
A graph indicates whether the chosen setting of frequency and amplitude is
tolerable.
You can specify your own setup or choose one of the predefined settings.
You can choose one of four predefined settings:
• CUSTom: The individual parameter values apply.
• CEI6G: Meant for CEI 6 Gbit/s tests: PRBS data rate is 1.1 Gbit/s, the PRBS
polynomial is 2
9
-1, the low-pass filter is 100 MHz.
• CEI11G: Meant for CEI 11 Gbit/s tests: PRBS data rate is 2 Gbit/s, the PRBS
polynomial is 2
11
-1, the low-pass filter is 200 MHz.
• Gaussian: Preset values for Gaussian distribution: PRBS data rate is 2 Gbit/s,
the PRBS polynomial is 2
31
-1, the low-pass filter is 100 MHz.
Enter an appropriate Data Rate. Refer to the technical specifications.
The maximum peak-to-peak Amplitude is limited by the free capacity of the 20 ps
delay line.
The PRBS polynomial can be chosen from a list. Available are eight polynomials,
from 2
7
-1 up to 2
31
-1.
8 Jitter Tolerance Tests
426 Agilent J-BERT N4903B High-Performance Serial BERT
Setting
Data rate
Amplitude
PRBS