User guide
• Control’s Title: Displays the title of the control window.
The following picture illustrates the middle pane of the Serial BERT.
The middle pane allows you to launch the different controls and dialogs of the
Serial BERT. These will be described in detail in the subsequent sections.
The following picture illustrates the lower pane of the Serial BERT.
The lower pane provides information about the Pattern Generator and the Error
Detector, this include:
• Setup information like Bit Rate and Selected Pattern.
• State information like Outputs ON or Jitter/ISI/SSC (Indicated by green LED).
• Error indicators like Error, Sync Loss, Data Loss, Clock Loss (Indicated by red
LED).
N O T E
Two additional error indicators "Symb Lock" and "8b10b Error"will appear, 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.
• Warning indicators like Output Protection (Indicated by orange LED at the
Outputs ON indicator).
• Temperatur warnings (Only visible if the temperature exceeds a certain
threshold value). For more information, see “Overheat Protection” on page
478.
1 Planning the Test
20 Agilent J-BERT N4903B High-Performance Serial BERT
Middle Pane
Lower Pane