Keysight N5384A High-speed serial data analysis Datasheet

Keysight E2688A, N5384A
High-Speed Serial Data Analysis and
Clock Recovery Software
For Infiniium Oscilloscopes
Data Sheet
02 | Keysight | E2688A, N5384A High-Speed Serial Data Analysis and Clock Recovery Software - Data Sheet
The Keysight Technologies, Inc. HighSpeed Serial Data Analysis (SDA) software
provides you with a fast and easy way
to pinpoint signal integrity problems
and validate performance for serial
interface designs. Perform mask testing,
characterize serial data streams that
employ embedded clocks, and decode
8b/10b data.
SDA software enables engineers to verify
compliance to computer, communication,
and data communications standards
such as PCI Express ®, Serial ATA, Serial
Attached SCSI (SAS), Fibre Channel, XAUI
and Gigabit Ethernet.
The BER contour feature provides data
valid window measurement capability
with components of noise and jitter. This
allows designers such as memory DDR4
and LPDDR4 to make JEDEC compliance
measurements.
SDA software and the Infiniium
oscilloscopes offer several features to
simplify the validation of serial interface
designs:
Real-time eye display with Mask
unfolding
The real-time eye display is reconstructed
from all unit intervals in the oscilloscope
memory aligned by the recovered clock.
In this display mode the center screen (or
zero in the time base) corresponds to the
active edge of the recovered clock. Each
signal including channels and functions
can be displayed as a real-time eye.
With the High-Speed SDA software, once
you identify a failure of the eye mask, you
can unfold the eye diagram to show the
specific unit interval that caused the
failure. When used with the 8b/10b
decoding feature you can identify data
dependent errors that result in eye
mask violations caused by Inter-Symbol
Interference (ISI).
Figure 1. A real-time eye display is reconstructed from all unit intervals in the memory aligned by a
recovered clock.
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.
04 | Keysight | E2688A, N5384A High-Speed Serial Data Analysis and Clock Recovery Software - Data Sheet
Mask testing
When used with the Keysight Infiniium
oscilloscopes, masks are provided for the
following standards:
–– PCI Express (2.5 Gb/s)
–– Fibre Channel Electrical (1.0625, 2.125
and 4.25 Gb/s)
–– Serial ATA
–– Serial Attached SCSI (SAS)
–– XAUI
–– FlexRay
When performing a mask test, the
High-Speed SDA software indicates the
number of waveforms (acquisitions) and
unit intervals tested, and the number
waveforms and unit intervals that failed.
This information helps determine your level
of confidence in meeting a given target bit
error ratio.
Figure 4. An example of leading a mask through SDA software.
Figure 5. An example of a mask test on a failing Serial ATA signal. The information below the mask
screen helps you determine the level of confidence in meeting your desired bit error rate.
05 | Keysight | E2688A, N5384A High-Speed Serial Data Analysis and Clock Recovery Software - Data Sheet
Easy measurement setup
The High-Speed SDA software extends
the ease-of-use advantages of Keysight’s
Infiniium oscilloscopes to the analysis of
serial data. A wizard walks you quickly
through the steps required to setup and
perform a measurement. Intuitive displays
and clear labeling of information make it
easy to comprehend measurement results.
SDA provides a real-time eye menu. The
menu is located in the display menu under
color grade view. Use this menu to change
scaling, look only at worst case edges, and
decide which bits you want to include in
your real-time eye.
Figure 6. To set up a measurement, the wizard asks you to identify the signal source and select the
clock recovery algorithm.
One-click real-time eye
SDA provides the ability to right-click on
a waveform and quickly create a real-time
eye.
Figure 7. Next, the setup wizard asks you to enter a nominal data rate and a loop bandwidth.
Figure 8. Real-time eyes can be created by a single click of the mouse.
06 | Keysight | E2688A, N5384A High-Speed Serial Data Analysis and Clock Recovery Software - Data Sheet
Serial data trigger and search
Powerful software triggering is available
for use on Infiniium oscilloscopes when
combined with the 8b/10b data decoding
function (that continuously scans for
the occurrence of up to 4 consecutive
symbols).
Setup the trigger based on symbols;
specific to a given standard. Invalid codes
or hex values. Solve data dependent
problems fast by using your oscilloscope
to monitor serial traffic and capture
error conditions. Unlike any other tool,
you can now combine logical errors with
the analog signal view of the serial data
stream at the time of the error occurrence.
Figure 9. Configuring a serial data trigger in the 8b/10b protocol.
Flexible clock recovery
You can choose constant-frequency, firstorder phase-locked loop (PLL), or secondorder PLL clock recovery. You can adjust
the center frequency and bandwidth,
and in the case of second-order PLL,
the damping factor. For PCI Express, the
clock recovery algorithm specified by the
PCI-SIG® is provided. A specific clock
recovery algorithm is also available for
SATA, HDMI, MHL, DisplayPort, USB, PCI
Express, CEI, Fibre Channel, FlexRay, and
MIPI® technologies. When you choose
PLL clock recovery, the clock recovery
algorithm requires some time at the start
of each record to lock to the data. This
interval cannot be viewed or analyzed.
The serial data wizard will indicate the
required time period for the clock recovery
algorithm to lock.
The first-order PLL
selection emulates a
first-order PLL
You enter the nominal
data rate and loop
bandwidth for the
clock recovery PLL
Figure 10. First-order PLL selections.
When you select second-order PLL,
you can enter a damping factor
in addition to nominal data rate
and loop bandwidth. You can also
choose between OJTF and JTF
Figure 11. Second-order PLL selections.
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.
08 | Keysight | E2688A, N5384A High-Speed Serial Data Analysis and Clock Recovery Software - Data Sheet
Oscilloscope compatibility
For oscilloscopes with earlier software
revisions, free upgrade software is
available at http://www.keysight.com/
find/infiniium_software
Ordering information
To purchase the High-Speed SDA software
with a new Infiniium oscilloscope, please
order the option indicated in the table:
To enable BER contour feature, please
order the option in the table in addition to
the high-speed SDA software:
Oscilloscope
9000A and 90000 Series
90000 X-Series
9000 H-Series
Z-Series
S-Series
Operating system
Windows XP Pro
Windows XP Pro
Windows 7
—
—
Software revision
A.02.10 or higher
A.03.00 or higher
A.04.20 or higher
—
—
Oscilloscope
9000A, 9000 H-, 90000,
90000 X Series
Z-Series
S-Series
Option number
003
Description
High-Speed SDA software
(Installed at the factory)
High-Speed SDA software
High-Speed SDA software
Model number
N8823B-1FP 1
N8823A-1FP 1
1.
To add the High-Speed SDA software to
an existing Infiniium oscilloscope, please
order the following:
E2688A-1FP
N5384A-1FP
Description
Fixed perpetual EZJIT Complete software for Infiniium 9000A, 9000H and
S-Series
Fixed perpetual EZJIT Complete software for Infiniium 90000A, V-Series and
Z-Series
BER contour feature requires N8823A EZJIT Complete software in addition to E2688A SDA software.
Model number
N5384A-1FP
E2688A-1FP
Description
Fixed perpetual High-Speed SDA software for Infiniium 9000A, 9000 H-, and
S-Series
Fixed perpetual High-Speed SDA software for Infiniium 90000A, 90000 X-, and
Z-Series
Related literature
Publication title
Infiniium 90000 Series Oscilloscopes - Data Sheet
Infiniium 9000 Series Oscilloscopes - Data Sheet
Infiniium 90000 X-Series Oscilloscopes - Data Sheet
Infiniium 9000 H-Series High-Definition Oscilloscopes - Data Sheet
Infiniium Z-Series Oscilloscopes - Data Sheet
Infiniium S-Series High-Definition Oscilloscopes - Data Sheet
Publication numbers
5989-7819EN
5990-3746EN
5990-5271EN
5991-1520EN
5991-3868EN
5991-3904EN
09 | Keysight | E2688A, N5384A High-Speed Serial Data Analysis and Clock Recovery Software - Data Sheet
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10 | Keysight | E2688A, N5384A High-Speed Serial Data Analysis and Clock Recovery Software - Data Sheet
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Published in USA, April 1, 2016
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