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Modifying the Test Setup
Inserting Errors
You can add a single bit error to the data stream by pressing
the Error Add button.
Setting up Error Accumulation
To provide comparable results, you can run tests over a longer time
and collect the measured data:
1
Press the PG/ED Setup
button twice to switch
to the error detector setup.
2
Open the Accumulation
Setup dialog box.
3
Select the activation
mode Repeat to run
repeated tests.
Accumulation Results
View the accumulated results:
1
Press the Analysis Results
button twice to switch to
the Results tab.
2
Switch to the
Accumulated Results.
You could also loosen the data
cable and wiggle it carefully.
Watch how the BER changes.
3
4
6
4
Select, No Logging,
because we do not
need a measurement
log file now.
Here you can view all statistics
measured during the current and
the previous measurement.
The pattern generator can also be set up
to insert a specified BER in the data
stream. This can, for example, be used
for testing error correction algorithms.
5
7
Press the Start
Accum button to
start accumulating.
6
Press OK.
5
Select aTime of
10 seconds as the
measurement period.
To stop the J-BERT from
collecting any more data,
press the Stop Accum
button.
11
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