Agilent Technologies J-BERT N4903B, User Manual, Page: 145 / 572

Clock Rate Indicators
The PG (Pattern Generator) and ED (Error Detector) bit rate indicators shown in
the lower pane display their current bit rate.
The ED bit rate is measured from the incoming clock signal or derived from the
data signal.
Trigger/Ref Clock Output
Trigger/Ref Clock Output - Concepts
The pattern generator's Trigger/Ref Clock Out port can be used to send a reference
signal (or trigger) to external devices like an oscilloscope or digital communication
analyzer.
In pattern mode, the pattern generator sends a trigger signal that is at least 32 bits
long. See also “How the Serial BERT Generates Memory-Based Patterns” on page
69 for details.
In sequence mode, the pattern generator can send a trigger signal whenever a
block of the sequence starts or restarts. See also “Sequence Block Parameters”
on page 102 for details.
Several options are available for the trigger signal. As an example, you can send
the trigger as a divided clock signal or as an indicator when the data pattern starts.
Trigger/Ref Clock Output - Procedures
To set up the pattern generator's Trigger/Ref Clock Output port:
1
Connect the external instrument to the Trigger/Ref Clock Out port.
2
Click
Trigger/Ref Clock Setup
menu item from the
PG Setup
submenu.
Setting up the Pattern Generator
4
Agilent J-BERT N4903B High-Performance Serial BERT 145