10G-KR Datasheet
10GBASE-KR/KR4 Compliance, Debug, and Decode Solution
Features & Benefits
Automates compliance measurements for IEEE 802.3ap-2007
Includes both a TekExpress® automation solution (for compliance) and
DPOJET (for debug)
Automated test setup for measuring transmitter equalization levels
generating 72 results, 12 results for each tap
Approximately 15 minutes to generate 120 results for 9 different
Keithley RF switch support for four lanes of KR/KR4
Signal acquisition and analysis support available using cost-effective
SMA cables
P7520 TriMode probe support for soldering to backplane KR directly
Provision for entering filter files to de-embed the effects of backplane
traces and any other components in the signal pathway
Provides users with a Tektronix Floating License installation option
Summary and detail test reports with margin and statistical information
aid analysis
Complete programmatic interface available; users can call 10G-KR
functions using their automation scripts
End-users can receive e-mail notification on measurement results and
stay connected with their test setup
Design engineers can utilize many built-in reporting features such as
appending the report, auto-incrementing the report, including user
comments, etc. to tailor their reporting requirements
Performs automatic signal validation before performing tests and
displays an error if the signal does not meet acceptable limits
Provides protocol decode to disassemble 10G-KR 64b/66b traffic with
time-correlated views of physical and protocol layer
Works equally well on live setup and stored waveforms
Ethernet 10G-KR Transmitter Testing for:
Device silicon validation
System compliance and debug
Manufacturing test
The Tektronix 10G-KR/KR4 Compliance, Debug, and Decode Solution
software automates testing of 10GBASE-KR/KR4 10 Gigabit Ethernet
Copper Backplane based on the IEEE 802.3ap specifications. The
TekExpress framework allows design and validation engineers to configure
their test setup, choose the measurements they want to run, and finally
generate detailed test reports which help engineers make critical design
and validation decisions. It also lets design engineers make use of the
DPOJET jitter and analysis framework to debug their products. For design
and validation engineers working on KR4, the 10G-KR solution provides an
option to use Keithley RF switches and automates multiple-lane testing.
10G-KR DPOJET user interface.
Option 10G-KR enables both an automation solution (for compliance) and DPOJET (for
TekExpress 10G-KR Measurement Setup
The new 10G-KR solution helps engineers to easily select measurements
for IEEE 802.3ap specification testing. Simple and easy-to-use
measurement setup helps engineers perform all measurements with
a single button click. Automation options help engineers meet their
compliance needs and generate detailed reports. User-defined mode lets
users make changes to the test limits and perform margin testing beyond
compliance. User-defined mode enables flexible parameter control for
characterization and margin analysis. The guided wizard prompts the user
to send required patterns and calculate the measurements accordingly. The
test report includes Pass/Fail summary, patterns used for testing, measured
values of margins and limits, and waveforms and measurements used
during the test process.
N1N0, PRBS11, and PRBS31-based measurement setup files.
DPOJET 10G-KR Measurement Setup
All limits and measurement parameters are automatically configured for the
users. Additionally, design engineers have the flexibility to change selected
measurements and measurement configurations within DPOJET. 10G-KR
DPOJET options provide a new standard-specific UI. New additional
measurements have been added including Rise Time, Fall Time, Vp-p, Jitter,
Speed, Output Waveform Characteristics, etc. based on IEEE 802.3ap
specifications. Setup files are provided based on different signal types such
as N1N0, PRBS11, and PRBS31. Signal-specific setup files allow design
engineers to perform measurements on different signal types, letting them
go into Analysis and Debug mode.
10G-KR — 10GBASE-KR/KR4 Compliance, Debug, and Decode Solution
Transmitter output waveform requirements related to coefficient update.
Details of the IEEE 802.3ap specification measurements covered in 10G-KR.
Transmitter output waveform requirements related to coefficient status.
Transmitter output waveform requirements.
Measurement Details Output Waveform Coefficient Update and Status – 10GBASE-KR
requires the user to measure specific regions of the waveform such as
overshoot and de-emphasis levels to determine the transmitter output
equalization levels. There are six taps and the state of the transmitter
equalizer, and as a result the transmitter output waveform, is manipulated
according to the protocol defined in 72.6.10 of IEEE 802.3ap or through
management. The changes in the transmitter output waveform resulting
from coefficient update requests shall meet the requirements stated in
Table 72–7 of IEEE 802.3ap. The coefficient update requests in Table 72–7
of IEEE 802.3ap are to be followed by a coefficient update equal to hold for
all taps. The results shall be verified after the coefficient status for all taps
is reported as not_updated.
For any coefficient update, the magnitudes of the changes in v1, v2, and v3
shall be within 5 mV of each other. When sufficient increment or decrement
updates have been applied to a given tap, it will reach a maximum or
minimum limit governed by the coefficient range or by restrictions placed on
minimum steady-state or maximum peak voltage, and the coefficient status
is reported accordingly. The transmitter output waveform shall meet the
requirements of Table 72–8 of IEEE 802.3ap for all of the limiting cases
represented in the table. Implementation of c(–1) or c(1) coefficient values
greater than zero or less than the minimum defined by Rpre (min) and Rpst
(min) is optional. A coefficient may be disabled by first asserting the preset
control defined in IEEE 802.3 Table 45–55 and, then manipulating
the other coefficients as required by the test.
This measurement, if done manually, is prone to human errors. Measuring
104 results and keeping track of each result could be problematic and is not
the best use of an engineer’s time. 10G-KR makes the job of an engineer
easy by noting down all the values and tabulating them in a way which can
be easily interpreted. Signaling Speed – Measured using recommended signal PRBS11.
The 10GBASE-KR signaling speed shall be 10.3125 ±100 ppm. Differential Peak-Peak Output Voltage (Max) – Measured using
recommended signal PRBS11.
72.6.5 Differential Peak-Peak Output Voltage (Max) with Tx Disabled
– Measured when Tx is disabled. The differential output voltage is
constrained according to the transmitter output waveform requirements
specified in of IEEE 802.3ap. For a 1010 pattern, the peak-peak
differential output voltage shall be less than 1200 mV, regardless of
equalization setting. The transmitter output voltage shall be less than 30 mV
peak-peak when disabled. The differential output voltage test pattern shall
consist of no fewer than eight symbols of alternating polarity.
Datasheet Common-mode Voltage Limits – Measured using recommended
signal PRBS11. The common-mode voltage of SL <p> and SL <n> shall be
between 0 V and 1.9 V with respect to signal ground. Transition Time – Rise time and fall time measured using
recommended signal N1N0 where 8 ≤ N ≤ 11
The rising and falling edge transition times shall be between 24 ps and
47 ps as measured at the 20% and 80% levels referenced to v2 and v5
as defined in of IEEE 802.3ap. Measurement is done using the
square wave test pattern with no equalization and a run of at least eight
consecutive ones and zeroes. Max Output Jitter (Peak-Peak) – Measured using recommended
signal PRBS11. Jitter components to be measured:
Random jitter – 0.15 UI Peak-Peak
Deterministic jitter – 0.15 UI Peak-Peak
Duty cycle distortion – 0.035 UI Peak-Peak
Total jitter – 0.28 UI Peak-Peak
For the purpose of jitter measurement, the effect of a single-pole high-pass
filter with a 3 dB point at 4 MHz is applied to the jitter. Crossing times are
defined with respect to the midpoint (0 V) of the AC-coupled differential
signal. Equalization shall be off during jitter testing.
Transmit jitter test requirements are specified in of IEEE 802.3ap.
The transmitter shall have a maximum total jitter of 0.28 UI peak-peak,
composed of a maximum deterministic component of 0.15 UI peak-peak
and a maximum random component of 0.15 UI peak-peak. Duty cycle
distortion (DCD) is considered a component of deterministic jitter and shall
not exceed 0.035 UI peak-peak. The peak-peak duty cycle distortion is
defined as the absolute value of the difference in the mean pulse width
of a 1 pulse or the mean pulse width of a 0 pulse (as measured at the
mean of the high- and low-voltage levels in a clock-like repeating 0101 bit
User can change limits, use filter files, and go beyond compliance.
sequence) and the nominal pulse width. Jitter specifications are specified
for BER 10–12. Output Waveform Characteristics – Measured using
recommended signal N1N0 where 8 ≤ N ≤ 11. The test pattern for the
transmitter output waveform is the square wave test pattern defined in of IEEE 802.3, with a run of at least eight consecutive ones. The
transmitter output waveform test is based on the voltages v1 through
v6, dv2, and dv5, which shall be measured as shown in Figure 72–12 of
IEEE 802.3ap.
Simplified Instrument Setup – Save Time and
Setup and test execution is simple with the 10G-KR solution. The
oscilloscope acquisition and analysis are all controlled through the 10G-KR
automation solution. The software’s graphical user interface (GUI) provides
an intuitive workflow for setup and testing.
Margin Testing
Design characterization is supported beyond IEEE 802.3ap specification
compliance requirements for all measurements. Qualify PHY with flexible
control over test configurations such as analysis windows and other
parameters. User-defined mode lets engineers make changes to the test
limits and perform marginal testing beyond compliance.
10G-KR — 10GBASE-KR/KR4 Compliance, Debug, and Decode Solution
Connection diagram for differential input.
Report Configuration Menu – The report configuration menu lets users configure reports
and it provides options such as auto-increment, appending, etc.
De-embedding Feature
As data rates increase, high-speed serial technologies have introduced
new test methodologies and requirements for compliance testing. As
technologies such as 10GBASE-KR increase in data rates, the eye is closed
and different components such as SMA cables can be de-embedded to get
better results. 10G-KR provides an option to de-embed the signal using
.FLT files.
Connection diagram for single-ended input.
One-button Testing
Once the test bench is set up and the DUT is properly connected, simply
press the Run button to perform the selected test suite. The 10G-KR
solution prompts the end-user to put the DUT into different test modes by
popping messages at regular intervals.
Automation Support
Save and recall setup files in automation script, with an option to automate
the complete test bench. Tektronix end-users can call the 10G-KR
application programmatically through NI LabVIEW, NI TestStand™, or
any other scripting language for controlling 10G-KR along with other
instrumentation such as thermal chambers and power supplies.
SMA Cables, Probe, and Keithley RF Switch
Connection diagram using RF switch.
Design engineers who may want to solder the probe to the backplane
copper lanes can do so because 10G-KR provides support for P7516,
P7520, and P7520A TriMode probes. Engineers who want to make use of
cost-effective SMA cables can directly connect SMA cables to their devices
and monitor the signals on the Tektronix oscilloscopes. Engineers working
on four lanes of KR can make use of Keithley RF switches to automate their
complete setup.
Pass/Fail Report
IEEE 802.3ap specifications measurements covered on 10G-KR.
Prerecorded Waveform
Prerecorded waveform support provides users with an option to use
prerecorded waveforms when an oscilloscope is not available. This feature
allows waveforms to be shared across multiple locations and removes
end-user dependency on using scopes all the time.
10G-KR report.
A summary report in .MHT (MHTML) format with Pass/Fail status is
automatically generated after tests complete. The report includes test
configuration details, waveform plots, and margin analysis to provide more
insight into your design.
10G-KR — 10GBASE-KR/KR4 Compliance, Debug, and Decode Solution
10GBASE-KR Custom Decode Feature
10G-KR Custom Decode provides protocol decoding to disassemble the
10GBASE-KR Ethernet 64b/66b traffic, including time-correlated views of
physical and Protocol layers. Decode results are displayed as a waveform
and an event-table, along with red flags on CRC/ECC errors in the decoded
data. You can view protocol decode along with time stamps on the decoded
data in event-tables.
Comprehensive Search Capability
The 10G-KR packet content search function is very useful for isolating an
event of interest. Once you have captured an event and need to analyze the
surrounding data, what do you do? In the past, you had to manually scroll
through the waveform data, counting and converting bits, to determine what
caused the event. The 10G-KR protocol decoder search function speeds up
event analysis by letting you enter criteria (such as serial packet content)
to quickly look through the acquired data for specific events. The search
engine marks each occurrence in the data. You can then use the Previous
and Next buttons on the instrument to rapidly navigate between marks.
10G-KR Custom Decode
Features and Values
10G-KR protocol Decode solution offers several features to simplify
validation of 64b/66b designs. Key features that add value proposition to
design engineers working on 10GBASE-KR products include:
Comprehensive search capability
The Results tab shows the list of search hits. Click on an item in the list to
go to the associated position on the waveform.
Setup wizard for quick setup, configuration and test
Packet-level decoding of primitives, as well as link and transaction
layers, helps capture abnormalities
Serial data analysis of 64b/66b bit streams
Decoding of scrambled and unscrambled symbols provides engineers
two different views on the data
Ability to save symbol and packet data lists to csv files for offline analysis
Packet decode details tab provides detailed information on packets:
– Packet information
– Channel information (Live channel, Math)
– Listing index
– Control symbols
– Reserved-bit settings
– Packet length
Quick search capability for specific symbols provides a fast method to
search on different areas of interest
10G-KR Decoder search results
Ordering Information
Recommended Equipment
Product Type
10G-KR and DJA*1
Matched-pair SMA cables (TCA-SMA connector) or
P7516, P7520, P7520A TriMode probes
Keithley Switch for KR4 support – S46
Model 5501A DC Block Picosecond
10GBASE-KR/KR4 Compliance and Debug Solution.
To Order Along with Oscilloscope
To Upgrade an Existing Oscilloscope
DC Blocks
*1 Prerequisite for 10G-KR.
DPOFL-10G-KR (Floating License)
DPOFT-10G-KR (Floating Trial)
10G-KR — 10GBASE-KR/KR4 Compliance, Debug, and Decode Solution
Contact Tektronix:
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Finland +41 52 675 3777
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Hong Kong 400 820 5835
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Japan 81 (3) 6714 3010
Luxembourg +41 52 675 3777
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The Netherlands 00800 2255 4835*
Norway 800 16098
People’s Republic of China 400 820 5835
Poland +41 52 675 3777
Portugal 80 08 12370
Republic of Korea 001 800 8255 2835
Russia & CIS +7 (495) 7484900
South Africa +41 52 675 3777
Spain 00800 2255 4835*
Sweden 00800 2255 4835*
Switzerland 00800 2255 4835*
Taiwan 886 (2) 2722 9622
United Kingdom & Ireland 00800 2255 4835*
USA 1 800 833 9200
* European toll-free number. If not accessible, call: +41 52 675 3777
Updated 10 February 2011
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21 Jan 2013