User guide
– Press the Auto Align key on the front panel
– Switch to the Accumulated Results Screen
– Press the Start Accum key on the front panel to start the BER
measurement
– For each measurement write down the number of errors at the end of the
measurement
– The correct Input Timing is selected by the following rule:
Look for the BER measurement that produced no error, and that has the
biggest distance to a measurement with errors and select the Input Timing
setting that was used in this measurement.
Example: Input Timing Setting 2 has the biggest ‘distance’ to a setting that
produced errors, no matter if checking in ‘forward’ or ‘backward’ direction
through the table. So this is the setting that has to be used.
9 Solving Problems
482 Agilent J-BERT N4903B High-Performance Serial BERT