Tektronix DPO4ENET DATASHEET
Ethernet 10/100/1000BASE-T Application Software
TDSET3 • DPO4ENET Data Sheet
Applications
Features & Benefits
TDSET3 Ethernet Compliance Testing
Automated Compliance Testing for 10, 100, and 1000BASE-T PHY
Verification
Designed for use with MSO/DPO5000, DPO7000, and
DPO/DSA/MSO70000 Series Oscilloscopes
10BASE-T Eth
10BASE-Te Ethernet
100BASE-T Ethernet
1000BASE-T Ethernet
Tektronix offers comprehensive, integrated tool sets for validating the
physical layer of IEEE 802.3 Et hernet devices, and for developing a nd
debugging Ethernet-based systems.
The Tektronix TDSET3 Ethernet Compliance Test application and selected
Tektronix oscilloscopes provide one-button testing for 10/100/1000BASE-T
test suites as specified by the IEEE standard for compliance testing.
TDSET3 automates compliance testing and allows engineers to perform the
required te
The Tektronix DPO4ENET Serial Application Module and MSO/DPO4000B
Series osc
validating and debugging Etherne t-based systems. DPO4ENET offers
automated trigger, decode, and search for 10BASE-T and 100BASE-TX
Ethernet, enabling fast and efficient validation and debug.
ernet
sts efficiently and reliably right on the bench.
illoscopes sim plify analysis of Ethernet waveforms when
DPO4ENET Ethernet Triggering and Analysis
ted Trigger, Decode, and Search for 10BASE-T and
Automa
100BASE-TX Ethernet
Designed for use with the MSO/DPO4000B Series Oscilloscopes
Data Sheet
85/100/115 plots for the 100BASE-TX Return Loss measurement.
Peak-to-peak jitter on 100BASE-TX with single voltage crossing.
TDSET3 – Automated Ethernet Physical Layer
Compliance Testing
Ethernet compliance testing has some unique measurement challenges:
Generating the “disturbing ” signal requires tools to generate both pattern
data and noise to provide real-world noise for return loss measurements
There are many individual amp litude, timing, return loss, and template
tests requ
Because
takes a lot o f setup and measurement time, and makes repeatable
measurement results difficult to achieve quickly
Performing return loss measurements can be expensive if using a vector
networ
using an arbitrary waveform generator (AWG) and oscilloscope
The TDSET3 provides automated compliance testing for 10, 100, and
1000BASE-T PHY verification, including:
Compliance and margin testing for a ccu rate analysis and improved
interoperability
Time- and frequency-domain measurements made with single analysis
instrument
Jitter and timing measurements with and without filters
Amplitude, linearity, and droop testing for transmitter performance
Frequency domain measurements including return loss and power
spectral density
User-defined mode enables flexible parameter control for
characterization and margin analysis
Detailed test reports with margin and statistical information aid analysis
Wide Ra ng e of Tests
nsure reliable information transmission over a network, industry
To e
standards specify requirements for the network’s physical layer. The
ired for each Ethernet variant:
The 10BASE-T standard specifies 22 tests per port plus fault
tolerance and CMRR
The 100BA
more
The 1000BASE-T standard calls for 80 tests per port plus BER,
CMRR, and
SE-TX standard outlines 12 tests per port plus CMRR and
more
of the large number of individual tests, compliance testing
k analyzer. Tektronix provides a patented, cost-effective method
TDSET3 Ethernet Compliance Test Software a utomat es Ethernet physical
layer tests for 10BASE-T, 10BASE-Te, 100BASE-TX, and 1000BASE-T
in compliance with standards such as IEEE 802.3-2000 and ANSI
X3.263-1995. The portfolio of tests includes core PMA and MDI tests like
Template, Distortion, Return Loss, Jitter (including the proposed alternate
jitter method), and Common Mode Voltage.
Amplitude Domain Tests
The industry standards require th e signals to have amplitudes within
specified ranges to assure interoperabili
tests vary with the signal speeds, but include such parameters as peak
or p eak-to-peak amplitude, overshoot, common mode voltage, and
positive/negative pulse symmetry.
ty between devices. The amplitude
Return Loss Test
The return loss of the cabling system can also affect interoperability.
The standards define the minimum amount of attenuation the reflected
signal should have relative to the incident signal. The Return Loss test
measures the impedance, typically over the range of 100 ±15%. TDSET3
ingeniously performs the Return Loss test for 85, 100, and 115 (111 for
10BASE-T) impedances as prescribed by the standards, using the same
tools such as oscilloscopes and AWG used for other tests, enabling efficient
usage of resources.
Time Domain Tests
Timing parameters of the signals are also specified by the standards.
These tests include timing measurements such as rise time, fall time, and
difference or symmetry between rise and fall times.
Jitter Tests
Jitter tests quantify the timing variations of the edges of the signal, using
specified test patterns. These jitter measurements include the contributions
from duty cycle distortion and the baseline wander. Jitter is determined by
accumulating waveforms, measuring the widt h of the accumulated points
at the eye crossing, and the peak-to-peak is inferred from minimum and
ximum values in the tails of the histogram. For example, the figure above
ma
shows the jitter measurement on a 100BASE-TX signal.
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Ethernet 10/100/1000BASE-T Application Software — TDSET3 • DPO4ENET
Positive side AOI Template test of 100BASE-TX signal.
Template Tes ts
Template mask tests are often used to quickly verify that the transmitted
signal meets industry-standard requirements. These template masks
are defined so that signal distortions such as overshoot, jitter, incorrect
rise and fall times, etc., will cause the mask test to fail. An example of a
100BASE-TX template mask test is shown above.
TF-GBE-BTP Basic Ethernet Test Fixture.
Test Report Generation
The unparalleled au tomation built into TDSET3 also enables faster
validation including the tedious task of generating reports. The user can
generate summary or detailed reports at a press of a button.
Test Fixtures
The TF-GBE Series of test fixtures supports many of th e Ethernet
compliance tests, providing convenient signal access, test points for
accurate removal of disturbing signals, return loss calibration, and
cross-connect circuits to connect to traffic generators and link partners.
GBE-BTP is the basic test package for 10/100/1000BASE-T tests.
The TFThe TF-GBE-ATP is the advanced test package which also includes a
1000BASE-T jitter test channel cable.
EE Test Fixture for Energy Efficient Ethernet measurements on 10BASE-Te.
TF-GBE-
The TF-GBE-EE is an additional test fixture which is required to perform the
Energy Efficient Ethern et measurements.
Complete Solution for Receiver Test
Tektronix offers a complete solution for creating and managing “disturbing”
signals for accurate receiver stress testing. The Tektronix arbitrary
waveform generators provide support for a dding and removing the
noise-related elements of the disturbing signal. Tektronix offers a complete
nstruments for Ethernet compliance tests and debug work; from
setofi
oscilloscopes and probes, to compliance test software, test fixtures, and
signal sources.
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