User guide

However, if you select error ratio based on "8B/10B Symbol Comparison",
follow the below steps.
5
Click cBER Setup.
It opens a cBER Setup dialog. This dialog offers the choice to calculate cBER
based on either SER, FER, FSR, ISR, or DER with either automatic conversion
factor or manually specified conversion factor.
C A U T I O N
When cBER is calculated from FSR, DER, ISR, in this case the cBER might be lower
than the sync threshold, even if the cBER based on SER or FER is higher than sync
threshold. This affects the automatic re-sync behavior and a manual "Sync Now"
is required.
6
Select the predefined standards listed in the Setup window.
N O T E
In order to achieve Symbol Lock, the pattern loaded in PG must have the same
Comma Symbol as selected from the standard.
7
Click Add Preset button to open 8B/10B Presets dialog. It allows you to add a
new preset to the Setup list. You can then enter a short description, values for
filler symbols and align symbols for the new preset. For more details, see “Error
Ratio - Reference” on page 190.
N O T E
Changes made in this dialog are effective immediately. So, if you press Cancel, the
settings are still valid.
8
Select a preset in the Setup list and click Delete Preset button to remove it
from the list. You can only delete presets which are defined by the user.
Setting up the Error Detector 5
Agilent J-BERT N4903B High-Performance Serial BERT 187