User guide

Ratio Graph
This graph displays the delta symbol errored 1's ratio, delta symbol errored 0's
ratio, and total delta symbol error ratio at data points over the entire accumulation
period. For more information, see “Ratios Graph” on page 379.
Accumulated Results
In addition to the values displayed in the BER Accumulated Results (see
“Accumulated Results” on page 380), the following additional values are listed:
•
Modified SKPOS Count
The total number of SKPOS count whose length has been changed by DUT in
a time interval is displayed here.
•
Expected SKPOS Count
The total number of Expected SKPOS Count received in a time interval is
displayed here.
•
SKPOS Bit Count
The total number of SKPOS bits received in a time interval is displayed here.
•
Expected SKPOS Bit Count
The total number of Expected SKPOS bits received in a time interval is displayed
here.
•
SKPOS Bit Ratio
The ratio of the number of SKPOS bits to the number of bits received in the
current (or last completed) accumulation period, specified by the gate period
is displayed here.
•
Data Rate Ratio
The ratio of the number of SKPOS bit count to the Expected SKPOS bit count
received in the current (or last completed) accumulation period, specified by
the gate period is displayed here.
•
Auto Resync Counter
The total number of Auto Re-Sync Count received in a time interval is displayed
here.
Accumulation Parameters for Bit Comparison without PCIe3 SKPOS
For detailed information on "Bit Comparison without PCIe3 SKPOS" accumulation
parameters, see “Accumulation Parameters” on page 382.
7 Evaluating Results
390 Agilent J-BERT N4903B High-Performance Serial BERT