You can set the deviation from the specified clock frequency towards
lower frequencies.
For example, if you have set a bit rate of 8.5 GHz, a deviation of 0.5 %
would result in a time-linear clock frequency variation between
8.500 GHz and 8.4575 GHz.
The modulation frequency is generally around 30 kHz.
Clock Rate Indicators
The PG (Pattern Generator) and ED (Error Detector) clock rate
indicators in the status bar display their current clock rate.
•
The ED clock rate is measured from the incoming clock signal or
derived from the data signal.
Trigger Output
Trigger Output - Concepts
The pattern generator's Trigger 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-
In sequence mode, the pattern generator can send a trigger signal
whenever a block of the sequence starts or restarts. See also
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.
Setting up the Pattern Generator
3
Agilent J-BERT N4903 High-Performance Serial BERT
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Summary of Contents for J-BERT N4903
Page 1: ...S Agilent J BERT N4903 High Performance Serial BERT User Guide s Agilent Technologies...
Page 68: ...2 Setting up Patterns 68 Agilent J BERT N4903 High Performance Serial BERT...
Page 158: ...4 Setting up the Error Detector 158 Agilent J BERT N4903 High Performance Serial BERT...
Page 314: ...6 Evaluating Results 314 Agilent J BERT N4903 High Performance Serial BERT...
Page 374: ...7 Jitter Tolerance Tests 374 Agilent J BERT N4903 High Performance Serial BERT...
Page 394: ...8 Solving Problems 394 Agilent J BERT N4903 High Performance Serial BERT...
Page 434: ...Index 434 Agilent J BERT N4903 High Performance Serial BERT...
