E2688A Datasheet, PDF (7/10 Pages) Keysight Technologies – High-Speed Serial Data Analysis

07 | Keysight | E2688A, N5384A High-Speed Serial Data Analysis and Clock Recovery Software - Data Sheet
Clock display mode
You can view the data signal superimposed
with the recovered clock. This provides a
display of the measured data relative to
the active edge of the recovered clock.
External clock
You can choose to use an external clock as
your clock reference by applying the signal
to any of the oscilloscope channels. This
allows you to provide your own explicit
clock that can be then used for jitter
analysis and to generate eye diagrams.
Figure 12. The display shows a data signal superimposed with a recovered clock.
Deep memory for deeper insight
At a sampling rate of 20‑GSa/s and an
incoming data rate of 2.5‑Gb/s, 1Mpts
memory allows you to capture an entire
2¹⁶ pseudorandom bit sequence (PRBS)
on each acquisition. The Infiniium Series
oscilloscopes, both with up to 1 Gpts of
memory, are currently the only real-time
oscilloscopes that will allow you to capture
and analyze data for patterns as large as
PRBS²³. Usable deep memory is extremely
important for capturing longer sequences
of serial data for analysis at the maximum
40 GSa/s sampling rate.
Multiple real-time eyes
SDA provides real-time eye views on each
signal. With this capability, combined with
waveform areas, you can look at dozens of
real-time eyes at once. Each real-time eye
can have its own timebase.
Figure 13. SDA lets you look at many real-time eyes at once.