E2688A Datasheet, PDF (3/10 Pages) Keysight Technologies – High-Speed Serial Data Analysis

03 | Keysight | E2688A, N5384A High-Speed Serial Data Analysis and Clock Recovery Software - Data Sheet
8b/10b decoding
When used with the Infiniium Series
oscilloscopes, you can perform 8b/10b
decoding with the analog view of a
serial data stream. You can use your
oscilloscope to assist you with debugging
during the link bring-up phase of
development. In addition you can use
the 8b/10b decode feature to help solve
disparity error problems or bit error rate
performance problems resulting from ISI.
Figure 2. The 8b/10b decoded symbol information below the appropriate portion of a PCI Express
signal.
BER contour analysis and
measurement setup
You can perform BER contour analysis
to make accurate data valid window
measurements. The BER contour is
computed statistically from jitter and
noise components of the signal. The timing
parameters specific to the BER contour
in accordance to the DDR4 and LPDDR4
JEDEC specification are timing data input
valid window (TdiVW) and voltage data
input valid window (VdiVW).
Figure 3. The BER contour is computed statistically from jitter and noise components.