User guide

You can view the details of the selected presets. To do so, either click View/

Edit Preset button or double-click the preset. Remember, the details of the

system presets will be in the disable mode.

User presets can be modified. To do so, either click View/Edit Preset button

or double-click the preset. System presets can not be modified.

If you choose error ratio based on 8B/10B symbol comparison, then use the

drop down list to specify whether you want to show the 8B/10B symbol

comparison results as SER/FER/cBER/FSR/DER/ISR.

N O T E

Two additional error indicators "Symb Lock" and "8b10b Error"will appear at the

lower pane of GUI, if you select the error ratio as "8B/10B Symbol Comparison"

from the Error Detector - Error Ratio's window. For more details, see “Symbol Lock

Indicator” on page 192 and “8b10b Error Indicator” on page 192.

N O T E

Depending upon the selection (SER/FER/cBER/FSR/DER/ISR), the Status

Indicator at the upper pane of the GUI will change. For more details, see “Status

Indicators” on page 372.

N O T E

Depending upon the selection (SER/FER/cBER/FSR/DER/ISR), the Results sub-

menu will now show either SER Results/FER Results/cBER Results/FSR Results/

DER Results/ISR Results as instantaneous measurements.

Set the symbol alignment mode. You have the following options:

• Select "Automatic" mode to enable automatic alignment. In automatic

mode the conversion factor for SER, ISR, and DER is 10. For FER and FSR,

the automatic conversion factor is the specified block length or if not

specified the expected pattern length including filler symbols.

• Select "Manual" mode to disable the automatic alignment and initiate re-

alignment if alignment is not already done or lost.

• Click ReAlign button to re-align the symbols again, in case, if the symbol

alignment is lost.

5 Setting up the Error Detector

188 Agilent J-BERT N4903B High-Performance Serial BERT