User guide

The PG and ED measured bit rates are displayed here for your reference.
Accumulated Measurements
Accumulated Measurements - Concepts
Accumulation refers to collecting measurement data over a specific period. This
can be used to create test scenarios that are reproducible and comparable. Also,
you can let tests run over long times and then evaluate the results afterwards.
Furthermore, you can use the log files to determine the location of occurring bit
errors for further root cause analysis.
N O T E
While accumulation tests are running, you should not modify the measurement
setup, as the measured bit errors do not represent the performance of your DUT
under real circumstances.
The period of time can be set by manual start and stop commands, an absolute
time setting, or the time it takes to measure a specified number of bits or bit errors.
The accumulation period should be long enough to make a statistically valid BER
measurement. See “Test Times and Confidence Levels” on page 27 for details.
7 Evaluating Results
376 Agilent J-BERT N4903B High-Performance Serial BERT
Clock Rates
Measurement Period