User guide

T I P
To find out how your DUT reacts on very small bit error rates, set up the pattern
generator to enter errors once every 10
-12
bits and run a longer accumulative test.
You can then find the DUT's true error rate by calculating the difference between
the bit error rate set up in the pattern generator and the accumulated bit error rate
found by the error detector.
N O T E
If you set up too high an error rate, the error detector will not be able to synchronize
to the incoming pattern. When setting up an error rate, always make sure that the
synchronization threshold is higher than the bit error rate.
Error Addition/Insertion - Reference
The following functions are available to insert errors in the bit stream:
Error Add Button
The Error Add button in the top right corner is used to insert a single bit error in
the data stream.
This button is always active, even if other error insertion mechanisms are running.
The maximum number of errors that this function supports is one error per 128-bit
block.
Setting up the Pattern Generator 4
Agilent J-BERT N4903B High-Performance Serial BERT 159