TekExpress Automotive Ethernet (100/1000BASE-T1)
Compliance Analysis Solution
Printable Application Help
*P077088106*
077-0881-06
TekExpress Automotive Ethernet (100/1000BASE-T1)
Compliance Analysis Solution
Printable Application Help
www.tek.com
077-0881-06
Copyright © Tektronix. All rights reserved. Licensed software products are owned by Tektronix or its subsidiaries
or suppliers, and are protected by national copyright laws and international treaty provisions. Tektronix products
are covered by U.S. and foreign patents, issued and pending. Information in this publication supersedes that in all
previously published material. Specifications and price change privileges reserved.
TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.
Contacting Tektronix
Tektronix, Inc.
14150 SW Karl Braun Drive
P.O. Box 500
Beaverton, OR 97077
USA
For product information, sales, service, and technical support:
■
In North America, call 1-800-833-9200.
■
Worldwide, visit www.tek.com to find contacts in your area.
Table of Contents
Welcome .............................................................................................................................................. v
Operating Basics
AWG/AFG automation ................................................................................................................... 1
Related documentation ................................................................................................................... 3
Application directories and usage ................................................................................................... 3
View test-related Files .................................................................................................................... 4
File name extensions ...................................................................................................................... 5
Getting Started
Compatibility .................................................................................................................................. 7
Minimum system requirements ...................................................................................................... 9
Install the software ........................................................................................................................ 10
Activate the license ....................................................................................................................... 11
View version and license information .......................................................................................... 11
Start the application ...................................................................................................................... 12
Options menu ................................................................................................................................ 12
View connected instruments: the instrument control settings ...................................................... 13
Application controls ..................................................................................................................... 15
Exit the application ....................................................................................................................... 16
Application Basics
Application basics ......................................................................................................................... 17
Setting Up Tests
Setting Up Tests: the Setup Panel ................................................................................................. 19
Selecting device parameters: the DUT tab ................................................................................... 20
Selecting tests: the Test Selection tab ........................................................................................... 21
Selecting acquisitions ................................................................................................................... 22
Acquiring waveforms: the Acquisitions tab ............................................................................ 22
Acquire live waveforms for analysis ....................................................................................... 26
Use pre-recorded waveforms for analysis ............................................................................... 26
Acquire step by step ................................................................................................................ 27
Configuring tests: the Configuration screen ................................................................................. 34
Compliance mode or User defined mode ..................................................................................... 36
TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help i
Table of Contents
Measurement parameter descriptions ........................................................................................... 37
Calibration .................................................................................................................................... 42
Running Tests
Before you click start .................................................................................................................... 47
Pre-run check list .......................................................................................................................... 49
Configure email notification ......................................................................................................... 50
Running the tests and viewing their progress: the Status panel ................................................... 51
Viewing Plots
Viewing plots ................................................................................................................................ 55
Viewing Results
Viewing test results: the Results panel ......................................................................................... 71
Configuring and Viewing Reports
Configuring and viewing reports: the Reports panel .................................................................... 73
Saving and Recalling Test Setups
About saving and recalling test setups ......................................................................................... 77
Saving a test setup ........................................................................................................................ 78
Recalling a saved test setup .......................................................................................................... 78
Creating a new test setup based on an existing one ...................................................................... 79
Deleting a test setup ...................................................................................................................... 79
Automotive Ethernet measurements
Transmitter Clock Frequency ....................................................................................................... 81
Transmitter Timing Jitter-MDI Jitter ............................................................................................ 85
Transmitter Timing Jitter Master and Slave ................................................................................. 88
Transmitter Power Spectral Density ............................................................................................. 97
Transmitter Output Droop .......................................................................................................... 102
Transmitter Peak Differential Output ......................................................................................... 105
Transmitter Distortion ................................................................................................................ 109
Return Loss ................................................................................................................................. 124
Known limitations ...................................................................................................................... 134
ii TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help
Table of Contents
Measurement Error Messages
Measurement error messages ...................................................................................................... 135
TekExpress Programmatic Interface
About the programmatic interface .............................................................................................. 139
Requirements for developing TekExpress client ........................................................................ 140
Remote proxy object ................................................................................................................... 141
Client proxy object ..................................................................................................................... 142
Program examples ...................................................................................................................... 143
Client programmatic interface example ..................................................................................... 146
TekExpress Automotive Ethernet Application Commands ........................................................ 149
About TekExpress Automotive Ethernet Application commands ........................................ 149
Connect through an IP address .............................................................................................. 149
Lock the server ...................................................................................................................... 151
Disable the popups ................................................................................................................ 152
Set or Get the DUT ID .......................................................................................................... 153
Set the configuration parameters for a suite or measurement ............................................... 155
Query the configuration parameters for a suite or measurement .......................................... 157
Select a measurement ............................................................................................................ 160
Select a suite .......................................................................................................................... 162
Run with set configurations or stop the run operation .......................................................... 164
Get or Set the timeout value .................................................................................................. 165
Wait for the test to complete ................................................................................................. 167
After the test is complete ....................................................................................................... 170
Save recall or check if a session is saved .............................................................................. 176
Unlock the server ................................................................................................................... 178
Disconnect from the server .................................................................................................... 179
Handle error codes ................................................................................................................. 180
TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help iii
Table of Contents
iv TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help
Welcome
The TekExpress Automotive Ethernet (100/1000BASE-T1) is a compliance test
solution for performing Transmitter electrical specification tests and MDI
electrical specification Return Loss test of the transmitter as per OPEN Alliance
BroadR-Reach (OABR) specification version 3.2. The IEEE P802.3bwTM D3.3 is
for 100 BASE-T1 and IEEE P802.3bpTM is for 1000BASE-T1. These
specifications have a stated objective to provide electrical interoperability for
100/1000 Mbps client and the same electrical test requirements to the Physical
Medium Attachment (PMA) transmitter electrical specifications.
The Automotive Ethernet (100/1000BASE-T1) is an Ethernet-based point-topoint technology for automotive applications.
Figure 1: Setup panel
TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help v
Welcome
Supported Tests
Test modes
The following tests are supported for both 100/1000BASE-T1. The Transmitter
Timing Jitter-MDI Jitter is a new measurement which is supported for
1000BASE-T1.
■
Transmitter Clock Frequency
■
Transmitter Timing Jitter-MDI Jitter (1000Base-T1)
■
Transmitter Timing Jitter Master and Slave
■
Transmitter Output Droop
■
Transmitter Power Spectral Density
■
Transmitter Peak Differential Output
■
Transmitter Distortion
■
Return Loss
See also:
Table 1: Test modes
Required test mode Automotive Ethernet measurement
100BASE-T1 1000BASE-T1
1 6 Transmitter Output Droop
Transmitter Timing Jitter
3 1 Transmitter Timing Jitter-Slave Jitter
2 1 Transmitter Timing Jitter-Master Jitter
Transmitter Clock Frequency and MDI Jitter
2 2 Transmitter Clock Frequency
NA 2 Transmitter Timing Jitter-MDI Jitter
4 4 Transmitter Distortion
Return Loss
5 5 Transmitter Power Spectral Density
5 5 Transmitter Peak Differential Output
Application Basics
Install the Software
Application Directories and Usage
File Name Extensions
vi TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help
Operating Basics
AWG/AFG automation
AWG/AFG automation is supported in the TekExpress Automotive Ethernet
(100/1000BASE-T1) application for the following measurements. Before
selecting the AWG/AFG automation feature, ensure that a GPIB connection is
established between the oscilloscope and the AWG/AFG. The AFG automation
depends on the measurement used for testing.
■
Transmitter Distortion with disturbing signal: AWG/AFG is used to transmit
a disturbing signal. CH1 and CH1_inverted are used.
■
Return Loss measurement and calibration: AWG/AFG is used to transmit a
wide band signal. CH1 and CH1_inverted are used for transmission of the
signal. A marker signal has to be connected to the auxiliary channel of the
oscilloscope (used as trigger source).
How Automotive Ethernet
automates AWG/AFG
Automation of the AWG/AFG is taken care in the TekExpress Automotive
Ethernet application in the following way:
1. Refresh the Instruments Control Settings to observe the connected AWG/
AFG through GPIB.
Figure 2: Instrument Control Settings
TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help 1
Operating Basics
2. Once the AWG/AFG is listed as shown above, go to the Global Settings tab
from the Configuration menu of the Tests. If the AWG/AFG is supported, it
will be listed as a drop-down menu option next to the Automate with AWG/
AFG label. By default, the application will consider the connected AWG to
be used for automation.
Figure 3: Test Selection tab
3. If you do not want to automate the use of an AWG/AFG, select the Do not
use option in the drop-down menu for that parameter, and then start the
testing.
NOTE. If Automate with AWG/AFG is set as Do not use, you will need to
manually copy the AWG/AFG waveforms from the oscilloscope to the AWG/
AFG. Waveforms are available at C:\Program Files\Tektronix\TekExpress
\TekExpress Automotive-Ethernet\AWG Waveforms.
2 TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help
Operating Basics
Related documentation
The following information is available as part of the TekExpress Automotive
Ethernet documentation (100/1000BASE-T1) set.
Table 2: Related documentation
Item Purpose Location
Help Application operation and User
Interface help
PDF of the help Printable version of the
compiled help
Application Help menu
PDF file that ships with
TekExpress Automotive
Ethernet software.
Downloadable from http://
www.tek.com/
Application directories and usage
The application directory and associated files are organized in the C:\Program
Files\Tektronix\TekExpress\TekExpress Automotive-Ethernet.
The following table lists the default directory names and their usage.
Table 3: Application directories and usage
Directory names Application specific information
InstallDir\TekExpress\TekExpress AutomotiveEthernet
TekExpress Automotive-Ethernet\AWG
Waveforms
It contains the application and associated files.
It contains AWG waveforms (AWG 5K, 7K and
AFG waveforms) that get used in return loss and
distortion with disturbing signal .
TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help 3
Operating Basics
Directory names Application specific information
TekExpress Automotive-Ethernet\Bin It contains miscellaneous TekExpress
Automotive-Ethernet libraries.
TekExpress Automotive-Ethernet\Compliance
Suites
TekExpress Automotive-Ethernet It contains the Manuals.
TekExpress Automotive-Ethernet\Examples It contains various support files.
TekExpress Automotive-Ethernet\ICP It contains instrument and TekExpress
TekExpress Automotive-Ethernet\Images It contains images required for the application.
TekExpress Automotive-Ethernet\Lib It contains utility files specific to the TekExpress
TekExpress Automotive-Ethernet\Report
Generator
TekExpress Automotive-Ethernet\Tools It contains instrument and TekExpress
It contains compliance-specific files and filter
files.
Automotive-Ethernet-specific interface libraries.
Automotive-Ethernet.
It contains style sheets for report generation.
Automotive-Ethernet-specific files.
View test-related Files
See also
View Test-Related Files
Files related to TekExpress Automotive Ethernet tests are stored in the X:
\Automotive Ethernet\Untitled Session shared folder. In the Automotive Ethernet
folder, each test setup has a test setup file and a test setup folder, both with the
test setup name. The test setup file is preceded by the Automotive Ethernet icon
and usually has no file extension displayed.
Inside the test setup folder is another folder named for the DUT ID used in the
test sessions (the default is DUT001).
Inside the DUT001 folder are the session folders and files. Each session has a
folder and file pair, both named for the test session using the naming convention
(date)_(time). Each session file is stored outside of its matching session folder.
Each session folder contains image files of any plots generated by the test session
and any waveform files if prerecorded waveform files were used during the
session.
4 TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help
Operating Basics
The first time you run a new, unsaved session, the session files are stored in the
X:\Automotive Ethernet\Untitled Session folder. Once you name and save the
session, the Untitled Session folder name is changed to the one you specified.
NOTE. By default, test report files are saved in the session folder. You can change
the report file location for a specific test.
See also
File name extensions
File name extensions
The TekExpress Automotive Ethernet software uses the following file name
extensions:
Table 4: File name extensions
File name extension Description
.TekX Session files are saved in this format but the
extensions may not be displayed
.py The test sequence file
.xml The encrypted XML file that contains the test-
specific configuration information
The log file extension is also xml
.wfm The test waveform file
.mht
.pdf
.cal Calibration file used with transmitter tests
Test result reports are saved in this format by
default. Test reports can also be saved in
MHTML format and .pdf.
See also
Application Directories and Usage
TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help 5
Operating Basics
6 TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help
Getting Started
Compatibility
Supported Oscilloscopes
Supported AWG/AFGs
The TekExpress Automotive Ethernet application runs on the following
Tektronix oscilloscopes:
■
DPO5104, DPO5204
■
DPO5104B, DPO5204B, MSO5104B, MSO5204B
■
DPO7104C, DPO7254C, DPO7354C
■
DPO70404C, DPO70604C, DPO70804C, DPO71254C, DPO71604C,
DPO72004C
■
DPO/DSA 70KD series
■
DPO72504DX, DPO73304DX, DPO72304DX, DPO72504DX,
DPO73304DX
NOTE. Minimum 2 GHz oscilloscope required for 1000BASE-T1 test and 1 GHz
oscilloscope for 100BASE-T1 test measurements.
The TekExpress Automotive Ethernet application supports the following
Tektronix arbitrary waveform and arbitrary function generators:
100BASE-T1
■
AWG7102 (Option 2): 10 GS/s
■
AWG5014: 1.2 GS/s, 14-bit AWG
■
AWG7122C: 12 GS/s
■
AFG3252: 2 GS/s, 14-bit AFG
■
AFG3102: 1 GS/s, 14-bit AFG
■
AWG7122B
■
AFG3022C
■
AFG3052C
■
AWG7082
■
AWG7082B
■
AWG7082C
■
AWG5014B
■
AWG5012C
TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help 7
Getting Started
■
AWG5012B
■
AWG5002C
■
AWG5002B
■
AWG5204
■
AFG3252C
1000BASE-T1
■
AWG5204
■
AWG5202
■
AFG3152C
■
AFG3252C
■
AFG3252
NOTE.
■
You may use AWG automation for Return Loss and Transmitter Distortion
with Disturbing Signal measurements.
Probes
■
Return Loss measurement is supported only on AWG5202 and AWG5204,
with High Power option (AWG5200-2HV/AWG5200-4HV: High Amplitude
DC coupled outputs) for AWG5200 S/N B020000 and above.
■
For 1000Base-T1, use the Signal Generator, which can generate the
1.8 Volts Peak-to-Peak.
The TekExpress Automotive Ethernet application supports the following
Tektronix differential probes:
100BASE-T1
■
Return Loss Measurement: TDP500, TDP1000 and TDP1500
■
All other measurements: P6247, P6248, P6330, TDP1500, TDP1000
1000BASE-T1
■
All other measurements: TDP3500 ±15 V DC + pk AC input voltage
8 TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help
Getting Started
Test Fixtures
Figure 4: TF-XGbT Ethernet fixture
1000BASE-T1
The TekExpress Automotive Ethernet application supports the TF-XGbT test
fixture.
100BASE-T1
The TekExpress Automotive Ethernet application supports the TF-XGbT test
fixture.
See Also
Minimum system requirements
Minimum system requirements
The following table shows the minimum system requirements for an oscilloscope
to run TekExpress Automotive Ethernet (100\1000BASE-T1).
Table 5: System requirements
Oscilloscope For a list of compatible oscilloscopes, see Compatibility.
Firmware
Software
Probes Following differential probes are supported:
■
TekScope 10.3.0 and above
■
Software version 10.2.0.x
■
100BASE-T1:TDP1500, TDP3500, P6248, P6247add
TDP3500 differential probes
■
1000BASE-T1:TDP3500 ±15 V DC + pk AC input voltage
differential probe
Automotive Ethernet Fixtures TF-XGbT for 1000BASE-T1 and 100BASE-T1
Other Devices
■
Adaptor TCA-VPI50 and TDP3500 for 70K oscilloscope
1
TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help 9
Getting Started
Frequency Divider
100BASE-T1 The TF-BRR-CFD test fixture allows to phase lock frequency
between DUT Transmitter Clock, oscilloscope , and AWG/AFG
sources.
Converts DUT Transmitter Clock from 66.666 MHz to 10 MHz.
1000BASE-T1 The TF-BRR-CFD fixtures allows to phase lock frequency
between DUT Transmitter Clock, oscilloscope, and AWG/AFG
sources.
Converts DUT Transmitter Clock from 125 MHz to 10 MHz.
Cables
100BASE-T1 Six same length BNC cables/SMA cables with BNC to SMA
connectors: one TCA-BNC or TCA-SMA
1000BASE-T1 Six same length BNC cables/SMA cables with BNC to SMA
connectors: one TCA-BNC or TCA-SMA
See also
Compatibility
Install the software
Complete the following steps to download and install the latest TekExpress
Automotive Ethernet application. See Minimum system requirements for
compatibility.
1. Close all applications (including the TekScope application).
2. Go to the www.tek.com.
3. Click Downloads. In the Download menu, select DOWNLOAD TYPE as
Software and enter TekExpress Automotive Ethernet in the MODEL OR
KEYWORD field and click SEARCH
4. Select the latest version of software and follow the instructions to download.
Copy the executable file to the oscilloscope
5. Double-click the executable and follow the on-screen instructions. The
software is installed at C:\Program Files\Tektronix\TekExpress\TekExpress
Automotive-Ethernet
6. Select Application>TekExpress Automotive Ethernet from the TekScope
menu to launch the application.
See also
Minimum System Requirements
1
If TekExpress is installed on a Tektronix oscilloscope, the virtual GPIB port will be used by TekExpress for communicating with oscilloscope
applications. If external GPIB communication devices such as USB-GPIB-HS or equivalent are used for instrument connectivity, ensure that the Talker
Listener utility is enabled in the DPO/DSA Oscilloscope's GPIB menu. For ease of use, connect to an external (secondary) monitor.
10 TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help
Getting Started
Activate the license
Activate the license using the Option Installation wizard in the TekScope
application:
1. In the TekScope application menu bar, click Utilities > Option Installation.
The TekScope Option Installation wizard opens.
2. Push the F1 key on the oscilloscope keyboard to open the Option Installation
help topic.
3. Follow the directions in the help topic to activate the license.
See also
View Version and License Information
View version and license information
Use the following instructions to view application version information and
license information for the application modules.
See also
To view version information:
1. From the Options menu, select About TekExpress.
2. Click the View Version Details link to check the version numbers of the
installed test suites. Close the dialog box when finished.
To view license information:
1. From the oscilloscope Help menu, select About TekScope.
The Options section in the dialog box displays a list of installed options,
including TekExpress Automotive Ethernet solution.
2. To view the Option key, look in the Option Installation Key section. When
finished, click OK to close the dialog box.
Activate the License
Options Menu
TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help 11
Getting Started
Start the application
To run the TekExpress Automotive Ethernet application from the TekScope
menu, select Analyze > TekExpress Automotive Ethernet.
A initializing screen is displayed, before the launch of the application.
While running the application, you can switch between the oscilloscope screen
and TekExpress Automotive Ethernet application by clicking the desired
window. To keep the application window on top, select Keep On Top from the
Options menu.
NOTE. If the application was not terminated properly during the last use, a dialog
box prompts you to recall the previously unsaved session.
Options menu
Options menu
The Options menu is located in the upper right corner of the application.
It has the following selections:
Table 6: Options menu
Menu Function
Default Test Setup Opens an untitled test setup with defaults selected.
Open Test Setup Opens a saved test setup.
Save Test Setup Saves the current test setup selections.
Save Test Setup As Creates a new test setup based on an existing one.
Open Recent It displays a menu of recently opened test setups to select from.
12 TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help
Menu Function
Instrument Control Settings It shows the list of instruments connected to the test setup and
allows you to locate and refresh connections to connected
instruments.
Keep On Top It keeps the TekExpress Automotive Ethernet application on top
of other open windows on the desktop.
Email settings It configures email options for test run and results notifications.
Help It displays TekExpress Help.
About TekExpress
■
It displays application details such as software name,
version number, and copyright.
■
It provides access to license information for your
TekExpress Automotive Ethernet application installation.
■
It provides a link to the Tektronix Website.
Getting Started
View connected instruments: the instrument control settings
Use the Instrument Control Settings dialog box to view or search for connected
instruments required for the tests. The application uses TekVISA to discover the
connected instruments.
Figure 5: Instrument Control Settings
TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help 13
Getting Started
To refresh the list of connected instruments:
1. From the Options menu, select Instrument Control Setting.
2. In the Search Criteria section of the Instrument Control Settings dialog box,
select the connection types of the instruments to search.
Instrument search is based on the VISA layer but different connected cables
determine the resource type, such as LAN, GPIB, USB. For example, if you
choose LAN, you can search for all the instruments supported by TekExpress
that are communicating over the LAN. If the search does not find any
instruments that match a selected resource type, a message appears telling
you that no such instruments were found. Click OK to close the message
window.
NOTE. Ensure that the GPIB option is enabled to detect the real time
oscilloscope in the Global Settings tab.
3. Click Refresh.
TekExpress searches for connected instruments.
4. After discovery, the dialog box lists the instrument-related details based on
the search criteria you selected. For example, if you selected LAN and GPIB
as the search criteria, the application checks for the availability of
instruments over LAN, then GPIB.
The details of the instruments are displayed in the Retrieved Instruments
table. The time and date of instrument refresh is displayed in the Last
Updated field.
14 TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help
Application controls
Getting Started
Table 7: Application controls descriptions
Item Description
Options menu It opens the Options menu for access to global controls.
Panels Visual frames with sets of related options. Some panels are further
divided into tabs and other sections.
Start button
Use the Start button to acquire and accumulate measurements. If prior
acquired measurements have not been cleared, the new measurements
are added to the existing set.
Stop button
Use the Stop button to abort a test in progress.
Pause \ Continue
button
Clear button
Application window
move icon
Mini view/ Normal view
Use the Pause button to interrupt the current acquisition. When a test is
paused, the button name changes to Continue.
Available only on the Results panel.
Use the Clear button to clear all existing measurement results.
NOTE. Adding or deleting a measurement, or changing a configuration
parameter of an existing measurement also clears measurements. This is
to prevent the accumulation of measurement statistics or sets of statistics
that are not coherent.
Place the cursor over the three-dot pattern in the upper left corner of the
application window. When the cursor changes to a hand, drag the
window to the desired location.
Toggles the application between Mini view and Normal view. Mini view
displays the run messages with the time stamp, progress bar, Start/Stop
button, and Pause/Continue button.
The application moves to Mini view when you click the Start button.
See also
TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help 15
Getting Started
Options menu
Exit the application
Use the following method to exit the application:
NOTE. Using other methods to exit the application results in abnormal
termination of the application.
1.
Click
2. Do one of the following:
■
■
on the application title bar.
A message box appears asking if you really want to exit TekExpress. To
exit, click Yes; otherwise, click No.
If you have an unsaved session or test setup open, you are prompted to
save it before exiting. To save it, click Yes. If you do not wish to save,
click No. To remain in the session, click Cancel..
16 TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help
Application Basics
Application basics
The TekExpress Automotive Ethernet software user interface is intuitive and easy
to use. In addition to the UI, a programmatic interface is available.
The user interface has four main panels, which allows you do the following:
■
■
■
■
■
Setup panel
Before running the tests for the first time
Status panel
Results panel
Save and recall test setups
See also
Overview and key specifications
TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help 17
Application Basics
18 TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help
Setting Up Tests
Setting Up Tests: the Setup Panel
The Setup panel guides you through the Automotive Ethernet test setup process
using tabs. The options selected in a tab will have an effect on the options
available in the next tab down.
Figure 6: Setup panel
■
DUT tab
Specify the DUT ID and the view settings. These settings apply to all tests
for the current session, and affect the test list in the Test Selection tab.
■
Test Selection tab
Select tests individually or by group, view a short description of a selected
test, and view a schematic showing appropriate device connections.
■
Acquisitions tab
View configurations for attached probes, view a list of signals and sources,
and view the Acquisitions table.
■
Configuration tab (Displays only when View: Advanced is selected in the
DUT tab.)
TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help 19
Setting Up Tests
Select either Compliance Mode or User Defined Mode, view Global
Settings, select measurement settings, and view or edit test parameter limits.
■
Preferences tab
Specify that an email be sent to you upon test failure.
See also
Saving a Test Setup
Running the Tests and Viewing their Progress in the Status Panel
Viewing Test Results in the Results Panel
Selecting device parameters: the DUT tab
Figure 7: Setup panel
1. Click the DUT tab on the Setup panel and specify the DUT ID and the view
settings.
20 TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help
These settings apply to all current tests, and affect the test list in the Test
Selection tab.
2. Enter the device ID (default value is DUT001). This ID appears on test
reports. To add comments to the top of a report, click
256 characters.
3. For the View option, select either Compliance or Advanced.
■
If you select the Advanced view, an additional Configuration tab
appears.
■
To access configuration options for Compliance view, click the
Configure button on the Test Selection tab.
Setting Up Tests
and enter up to
See also
Setting up tests: the Setup panel
Choosing tests: the Test Selection tab
Acquiring waveforms: the Acquisitions tab
Configuring tests: the Configure button or Configuration tab
Selecting tests: the Test Selection tab
Use this tab to select the tests to run on the connected DUT. The tests that you
select here impact the parameters available in the Acquisitions tab.
Figure 8: Test Selection tab
TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help 21
Setting Up Tests
To select a test, do the following:
1. In the Setup panel, click the Test Selection tab.
2. Select the desired tests. For a list of supported tests, click here.
■
Select the check boxes of individual tests or of entire groups of tests. To
select all tests in the list, click the Select All button and click Deselect
All unless you want to run all tests.
■
Click on the Schematic button to display the schematic document for the
selected test. Use to verify the test setup before running the test.
Once you have selected the tests, then you can configure the tests.
See also
Selecting acquisitions
Acquiring waveforms: the
Acquisitions tab
Setup panel
Acquiring waveforms
Configuration tab
Status panel
The Acquisitions tab in the Setup panel is used to view and set acquisitions
parameters for the selected tests. Before you can do this, you must first:
22 TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help
Setting Up Tests
Figure 9: Acquisitions tab with Acquire live waveforms selected
■
Select either Acquire Live Waveforms or Use Pre-recorded waveform
files on the DUT tab of the Setup panel.
■
The acquisition parameters displayed on the Acquisitions tab will differ
depending on your choice on the DUT tab.
If you select Acquire Live Waveforms on the DUT tab, do the following:
1. In the Setup panel, click the Acquisitions tab.
2. Select the probe source channel for each listed signal in the Probe selection
drop-down menu.
3. You may select to view the probe configuration for each channel used.
4. You will see the Acquisitions table. For information about the possible
parameter columns displayed in the Acquisitions table, click here.
The following table below lists the parameter columns displayed in the
Acquisitions table in the Acquisitions tab of the Setup panel. Columns displayed
depend on the tests selected in the Test Selection tab, and whether or not the
Show Acquire Parameters check box has been selected.
TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help 23
Setting Up Tests
Table 8: Acquisitions parameters
Column name Description
Test Name Displays the name of the selected test for performing
acquisitions. One or more tests can perform the same
acquisitions.
Acquisition Displays the named acquisition.
Record Length Displays the size of the record in samples.
Disturbing signal Displays whether or not a disturbing signal is excluded.
Average Displays the number of averages that will be used with average
mode acquisition.
AWG Series Displays the AWG series model, if present.
TX_TCLK Displays whether or not a TX_TCLK is excluded.
Hi resolution Displays the HiRes(Vertical resolution) factor.
WaveForm FileName Displays the name and location of the waveform file to be used
for the measurement. Applies only to testing using prerecorded
waveforms.
5. Underneath the table, you may select the Show Acquire Parameters check
box. When selected, the acquisition parameters for each test displays an
additional columns in the Acquisitions table.
6. You may select the Acquire Step by Step check box. When selected, the
application prompts you to continue after each phase of test completes.
7. Select a Signal validation parameter (Signal validation is valid only for Live
acquisitions):
■
Prompt me if signal fails: Select to prompt if signal fails.
■
Use Anyway: Click to Run the test on the current acquired signal in
spite of failed signal.
■
Skip Test: Click to skip the current test after signal validation fails.
■
Reacquire: Click to reacquire the signal for the test being Run.
■
Use signal as is-Don't check: Select to perform the test without signal
validation.
■
Skip test if signal fails:Select to skip the test for which signal validation
fails.
24 TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help
Setting Up Tests
1. In the Setup panel, click the Acquisitions tab.
Figure 10: Acquisitions tab with Use pre-recorded waveform files selected
2. You will see the Acquisitions table. Locate the row for the desired test and
then click the ellipsis button ( ) in the Waveform FileName column. Select
a file. You can select more than one file for each test. For information about
the possible parameter columns displayed in the Acquisitions table, click
here.
3. Underneath the Acquisitions table, you may select the Show Acquire
Parameters check box. When selected, the acquisition parameters for each
test are displayed in additional columns in the Acquisitions table.
See also. Use prerecorded waveforms for analysis
Acquire live waveforms for analysis
Setting up tests the Setup panel
TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help 25
Setting Up Tests
Acquire live waveforms for
analysis
Use pre-recorded
waveforms for analysis
Use these instructions to set up acquisition for a live waveform.
1. Open a saved test setup or create a new one.
2. In the Setup panel, select the DUT tab, enter the desired DUT ID, and then
select the Acquire live waveforms check box.
3. Select other DUT options as desired.
4. In the Test Selection tab, select the desired test(s).
5. In the Acquisitions tab, select or view the desired parameters in the
Acquisitions Table.
6. Configure the tests if you have not done so already, and then click Start to
run the test.
See also. Acquiring waveforms the acquisitions tab
Use prerecorded waveforms for analysis
You can use pre-recorded waveforms for analysis.
NOTE. If you are using the pre-recorded waveform files option, it is
recommended that you use a waveform file (.wfm) that was captured from a
Tektronix oscilloscope. This eliminates the need to use an oscilloscope. You can
manually select waveforms and perform the tests by clicking the Start button. The
reference waveforms are provided with the installer at C:\Users\Public\Tektronix
\TekApplications\TekExpress Automotive-Ethernet.
1. Open a saved test setup or create a new one.
2. In the Setup panel, select the DUT tab, select the desired DUT, and then
select Use pre-recorded waveform files check box.
3. In the Test Selection tab, select the desired tests.
4. In the Acquisitions tab, locate the row for the desired test in the Acquisitions
Table, and then In the Waveform FileName column for that test, click the
ellipses button (
5. Perform any additional desired test setup, such as test configuration, and then
click Start to run the test.
You can select a different waveform file for each test, clear a test from the
current run, or add a test to the current run. Once you click Start, data
corresponding to that test run populates the other panels (such as the test status
and test results).
See also. Acquiring waveforms the Acquisitions tab
Acquire live waveforms for analysis
) and select the desired waveform file.
26 TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help
Setting Up Tests
Acquire step by step
The Acquire Step By Step option is available in the Acquisitions panel. This is a
global parameter that is applied to all tests when selected. By default, this option
is deselected.
When selected, this parameter allows for display of the reference input waveform
of the selected measurement. This helps to compare the input waveform coming
from DUT with the typical reference waveform (snap shot), allowing you to
change the setup before acquiring the waveforms. The following table gives
different reference waveform snap shots that appear for different tests.
NOTE. When using prerecorded waveform files, the Acquire Step By Step option
is not available.
TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help 27
Setting Up Tests
Table 9: Reference waveforms
Test name Reference waveform
Transmit Timing Jitter – Master Jitter 100BASE-T1
1000BASE-T1
28 TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help
Setting Up Tests
Test name Reference waveform
Transmit Timing Jitter – Slave Jitter 100BASE-T1
1000BASE-T1
TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help 29
Setting Up Tests
Test name Reference waveform
Transmitter Output Droop 100BASE-T1
1000BASE-T1
30 TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help
Setting Up Tests
Test name Reference waveform
Transmit Clock Frequency 100BASE-T1
1000BASE-T1
Transmitter Distortion 100BASE-T1
TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help 31
Setting Up Tests
Test name Reference waveform
Transmitter Power Spectral Density 100BASE-T1
1000BASE-T1
32 TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help
Setting Up Tests
Test name Reference waveform
Transmitter Peak Differential Output 100BASE-T1
1000BASE-T1
Return Loss 100BASE-T1
TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help 33
Setting Up Tests
Configuring tests: the Configuration screen
Once you’ve selected tests, you may use the Configuration screen. There are two
ways to reach the screen: the Configuration tab or the Configure button.
Figure 11: Configure button on Test Selection tab
The TekExpress Automotive Ethernet solution you are using determines how you
may reach the Configuration screen.
■
If you selected Compliance View in the Setup panel of DUT tab, click the
Test Selection tab and select the desired test. Then click the Configure
button in the lower right corner of the Test Selection tab.
■
If you selected Advanced View in the Setup panel of DUT tab, the
Configuration tab will appear on the Setup panel – click on it.
The Configuration screen shows Global parameters, which are common for all
tests, and Measurement parameters, which are specific to selected tests, including
acquisition, analysis, and limit parameters.
NOTE. Test parameters that are grayed cannot be changed.
34 TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help
■
Settings
Compliance Mode or User Defined Mode
■
Global Settings tab
Setting Up Tests
In the Instruments Detected section, click in the shaded area opposite Real Time
Scope and select the desired instrument from the drop-down list. If you don’t see
the instrument, refresh the list by using the Instrument Control Settings.
■
Measurements tab
Lists all tests for the selected measurement type. Click on a measurement to view
the available parameters in the tabbed filed below the list. The parameters and
parameter type tabs shown depend on the selected test. To edit the test
parameters, select the User Defined Mode check box.
■
You may change test parameters. Select the test whose parameters you would
like to change. The options below the test list change to reflect the selected
test.
To modify the parameters, select the desired tab and parameters. For
parameter details, see Measurement parameter descriptions.
Figure 12: Limits Editor
■
Use the Limits Editor button in the upper right corner to view or change the
High Limit and Low Limit values used for each measurement.
Next, Prepare to run the tests.
See Also
Setting up tests: the Setup panel
Selecting device parameters: the DUT tab
Choosing tests: the Test Selection tab
Acquiring waveforms: the Acquisitions tab
About saving and recalling test setups
TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help 35
Setting Up Tests
Compliance mode or User defined mode
From the Configuration screen, you will have the option to select either
Compliance Mode or User Defined Mode.
■
Compliance Mode: Select to use Compliance Mode values. You cannot
change any test parameters in Compliance Mode, but you can view the
compliance parameters.
■
User Defined Mode: Select to run tests using custom parameters. You may
change parameters that are not grayed out.
NOTE. These modes are not to be confused with the two views available from the
DUT tab:Compliance View and Advanced View.
Pairing modes and views
for test operation
Your selections of Modes and Views will change the way the tests operate. These
pairings of views and modes are possible:
■
Compliance View selected with Compliance Mode: Tests will run
automatically with little or no user intervention. You will not be able to
change test parameters to anything that deviates from the compliance
standards. To view configuration options, click the Test Selection tab of the
Setup panel, and then click the Configure button.
■
Compliance View selected with User Defined Mode: Tests will run
automatically but you will be able to change test parameters before starting
the tests. To view configuration options, click the Test Selection tab of the
Setup panel, and then click the Configure button.
■
Advanced View selected with Compliance Mode: Tests will run
automatically with little or no user intervention. You will not be able to
change test parameters to anything that deviates from the compliance
standards. To view configuration options, click the Configuration tab of the
Setup panel.
■
Advanced View selected with User Defined Mode: Tests will run
automatically but you will be able to change test parameters before starting
the tests. To view configuration options, click the Configuration tab of the
Setup panel.
36 TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help
Setting Up Tests
Measurement parameter descriptions
View or change measurement parameters in the Configuration tab of the Setup
panel. Measurement parameters are displayed for the test selected in the tree view
section. Not all of the parameters listed apply to all tests, and some are only
available when running tests in User Defined Mode. You cannot change any
parameters if you selected Compliance Mode.
1000BASE-T1
Figure 13: Measurements tab
Table 10: Measurement parameters for 1000BASE-T1
Name Unit Range/
Allowable
values
Record Length M 1 to 20 2.75 M Sets the record
Default Description Applies to
Transmit Clock
length to use.
12.5M Transmitter
Frequency
Timing JitterMDI
Transmitter
Timing Jitter
(Master Jitter)
Transmitter
Timing Jitter
(Slave Jitter)
TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help 37
Setting Up Tests
Name Unit Range/
Allowable
values
Averages NA 2 to 100 2 Sets the
2 to 1000 500 Return Loss
No of
Acquisitions
Hardware
Clock Divider
None NA NA NA Select to check
Edge
■
Falling
■
Rising
NA 1 to 100 5 Sets the
NA NA Hardware
NA NA Rising Used to select
Default Description Applies to
number of
averages
(number of
acquisitions)
for average
mode
acquisition.
number of
acquisitions
Select to use
Clock Divider
the external
hardware clock
divider unit
(125 MHz
Tx_CLK to
10 MHz) to
synchronize
the DUT,
disturber signal
source (AWG/
AFG), and the
oscilloscope.
the behavior of
the DUT
without any Ref
clock (External
or Internal).
the type of
edges on
which RMS
Jitter and
Peak-to-Peak
Jitter will be
calculated.
Transmitter
Output Droop
Transmitter
Peak
Differential
Output
Transmitter
Distortion
Transmitter
Distortion
Transmitter
Timing JitterMDI Jitter
Transmitter
Timing Jitter
(Master Jitter)
Transmitter
Timing Jitter
(Slave Jitter)
38 TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help
Setting Up Tests
Name Unit Range/
Allowable
values
Hysteresis % 1 to 10 5% Sets the
None NA NA NA NA Transmitter
Smooth NA 0 to 10 7 Sets the
Default Description Applies to
Transmitter
hysteresis in
percentage
that gets used
during edge
finding.
number of
samples that
will be used
while
smoothing the
return loss
waveform; sets
the averaging
filter length.
Timing Jitter
(Master Jitter)
Transmitter
Timing Jitter
(Slave Jitter)
Transmitter
Timing Jitter -
MDI Jitter
Power Spectral
Density
Return Loss
100BASE-T1
TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help 39
Setting Up Tests
Table 11: Measurement parameters for 100BASE-T1
Name Unit Range/
Allowable
values
Record Length M 1 to 20 0.5M Sets the record
Averages NA 2 to 100 16 Sets the
2 to 512 500
Spectral
Average
Hardware
Clock Divider
Software
Signal
Correction
NA 2 to 256 2 Sets the
NA NA NA Select to use
NA NA NA Select to use
Default Description Applies to
length to use.
12.5M Transmitter
number of
averages
(number of
acquisitions)
for average
mode
acquisition.
number of
spectral
averages
the external
hardware clock
divider unit
(66.66 MHz
Tx_CLK to
10 MHz) to
synchronize
the DUT,
disturber signal
source (AWG/
AFG), and the
oscilloscope.
the internal
software signal
correction to
synchronize
the DUT,
disturber signal
source (AFG/
AWG), and the
oscilloscope.
Transmit Clock
Frequency
Timing Jitter
(Master Jitter)
Transmitter
Timing Jitter
(Slave Jitter)
Transmitter
Output Droop
Return Loss
Transmitter
Power Spectral
Density
Transmitter
Distortion
Transmitter
Distortion
40 TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help
Setting Up Tests
Name Unit Range/
Allowable
values
None NA NA NA Select to check
Edge
■
Falling
■
Rising
Hysteresis % 1 to 10 5% Sets the
RBW KHz 1 to 100 10KHz Sets the
Center
Frequency
Frequency
Span
Smooth NA 0 to 10 7 Sets the
NA NA Rising Used to select
MHz 50 to 500 100.5MHz Sets the center
MHz 100 to 500 201MHz Sets the range
Default Description Applies to
the behavior of
the DUT
without any Ref
clock (External
or Internal).
the type of
edges on
which RMS
jitter will be
calculated.
hysteresis in
percentage
that gets used
during edge
finding.
resolution
bandwidth.
This controls
the bandwidth
of the spectral
analyzer filters.
of the
frequency span
over which
spectral
analysis is
done.
of frequencies
over which
spectral
analysis is
done
number of
samples that
will be used
while
smoothing the
return loss
waveform; sets
the averaging
filter length.
Transmitter
Distortion
Transmitter
Timing Jitter
(Master Jitter)
Transmitter
Timing Jitter
(Slave Jitter)
Transmitter
Timing Jitter
(Master Jitter)
Transmitter
Timing Jitter
(Slave Jitter)
Transmitter
Power Spectral
Density
Transmitter
Power Spectral
Density
Transmitter
Power Spectral
Density
Return Loss
TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help 41
Setting Up Tests
Calibration
See also
Configuring tests: the Configure button or Configuration tab
Calibration can be performed on live waveforms or by using the alreadycalibrated waveforms.
Measurements
Following are the measurements which need calibration before running the test.
Transmitter Distortion
In Transmitter distortion, calibration is done to effectively remove the disturbing
signal and compensate for non-linearity in the disturber and test fixture.
Figure 14: Calibration tab - 1000BASE-T1
42 TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help
Setting Up Tests
Figure 15: Calibration tab - 100BASE-T1
Return Loss
■
Live calibration
Figure 16: Live calibration
TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help 43
Setting Up Tests
NOTE. The live Calibration files are saved in X:\Automotive Ethernet\Calibration
folder.
■
Use pre-recorded files
Figure 17: Use pre-recorded files
Table 12: Calibration table parameters
Parameter Description
Live Calibration Sets the live calibration process.
Use Pre-recorded Calibration Sets the calibration process with prerecorded
calibrated waveforms and allows you to browse
and select the calibrated waveforms. The path
for selecting the calibrated waveforms is C:
\Users\Public\Tektronix\TekApplications
\Automotive-Ethernet.
Channel drop down Allows you to select relevant channel and
probes.
NOTE. when you change the input sources
(Channel) other than calibrated sources, you
need to re-calibrate with latest sources.
Cal Type Displays the type of calibration: Load, Open, and
Short.
44 TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help
Setting Up Tests
Parameter Description
Cal Status Displays the status of the calibration: Pending,
Done.
Cal Time Displays the previous calibration time: Date,
Month, and Year .
Schematic button Click to view the schematic.
Plot button Click to view the plot.
Apply button Click to apply the configured parameters to
calibration.
Run button Click to run the process of calibration.
Default button Click to perform calibration by using default
values.
NOTE. This button is applicable only for
Transmitter distortion. The expected and
measured values for Transmitter distortion on
Calibration tab will be initially empty, when you
launch the application for the first time and they
get populated once you click the Default button .
To manually set up signal source: Click here and
copy files to USB drive and recall on connected
signal source.
In case of manual signal source (AFG/AWG)
setup, click the link and copy the relevant folder
and recall the setup on connected signal source.
TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help 45
Setting Up Tests
46 TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help
Running Tests
Before you click start
Before running a test for the first time
Before you run a test for the first time, review these steps:
1. Understand where your test files are stored on the instrument.
After you install and launch TekExpress Automotive Ethernet, it creates the
following folders on the Oscilloscope:
■
\Program Files\Tektronix\TekExpress\TekExpress Automotive-Ethernet
■
\My Documents\My TekExpress\Automotive Ethernet
■
\My Documents\My TekExpress\Automotive Ethernet\Untitled Session
Every time you launch TekExpress Automotive Ethernet.exe, an Untitled
Session folder is created in the Automotive Ethernet folder. The Untitled
Session folder is automatically deleted when you exit the Automotive
Ethernet application.
CAUTION. Do not modify any of the session files or folders because this may
result in loss of data or corrupted session files. Each session has multiple files
associated with it. When you save a session, a .TekX file, and a folder named for
the session that contains the associated files, is created on the oscilloscope X:
drive.
2.
Ensure that the My TekExpress folder has read and write access, and that
the contents are not set to be encrypted:
a. Right-click the folder and select Properties.
b. Select the General tab, and then click Advanced.
c. In the Advanced Attributes dialog box, ensure that the option Encrypt
contents to secure data is NOT selected.
TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help 47
Running Tests
Example:
Figure 18: Advanced Attributes dialog box
Before running any test
1. Review the Pre run check list.
2. Configure the Email notification options if you want the application to notify
you by email when a test completes or produces an error. Access the email
options either from the Options menu in the upper right corner, or from the
Preferences tab on the Setup panel.
3. Select the Report options.
See Also
Prerun check list
48 TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help
Running Tests
Pre-run check list
Do the following before you click Start to run a test. If this is the first time you
are running a test on a setup, then refer also to the guidelines above.
1. Ensure that all the required instruments are properly warmed up (about
20 minutes).
2. Perform the Signal Path Compensation (SPC).
a. On the oscilloscope main menu, select the Utilities menu.
b. Select Instrument Calibration.
3. Deskew any cables.
4. Ensure that the application is able to find the DUT. If it cannot, perform a
search for connected instruments.
To find the DUT:
a. Launch the TekExpress Automotive Ethernet application.
b. Select the Setup panel and then click the DUT tab.
See also
c. Click the Test Selection tab. Select any test, and then click Configure
button.
d. In the Configuration section, click Global Settings.
e. In the Instruments Detected section, click in the shaded area opposite Real
Time Scope and ensure that the oscilloscope with the (GPIB8::1::INSTR)
designation is in the drop-down list.
Before you click start
Configure email notification
Running the tests and viewing their progress
TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help 49
Running Tests
Configure email notification
Set up these email settings if you want the application to notify you by email
when a test completes or produces an error. Configure email from the Options
menu.
1. From the Options menu in the upper right corner, select Email Settings to
open the Email Settings dialog box, or click the Preferences tab on the Setup
panel.
Figure 19: Email Settings dialog box
2. (Required) For Recipient email Address(es), enter your email address. You
can include multiple addresses as long as you separate the addresses with
commas.
3. (Required) For Sender's Address, enter the email address used by the
instrument. This address consists of the instrument name, followed by an
underscore, followed by the instrument serial number, the @ symbol, and the
email server used. For example: DPO72004C_B130099@yourcompany.com.
4. (Required) In the Server Configuration section, type the SMTP Server
address of the Mail server configured at the client location, and the SMTP
Port number, in the corresponding fields.
If this server requires password authentication, enter a valid login name,
password, and host name in the corresponding fields.
NOTE. If any of the above required fields are left blank, the settings will not
be saved and email notifications will not be sent.
5. In the Email Attachments section, select from the following options:
■
Reports: Select to receive the test report with the notification email.
50 TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help
Running Tests
■
Status Log: Select to receive the test status log with the notification
email. If you select this option, then also select whether you want to
receive the full log or just the last 20 lines.
NOTE. The ScoreCard and Analysis Screenshot options are not available
in Automotive Ethernet.
6. In the Email Configuration section, select as desired:
■
Enter a maximum file size for the email message. Messages with
attachments larger than this limit will not be sent. The default is 5 MB.
■
To limit the number of attempts the system makes to send a notification,
enter the number in the Number of Attempts to send field. The default is
1. You can also specify a timeout.
7. Select the Email Test Results when complete or on error check box. Use
this check box to quickly enable or disable email notifications.
8. To test your email settings, click Test Email.
9. To apply your settings, click Apply button.
10. Click Close button to exit the Email Settings dialog box.
See also
Before you click start
Pre-run check list
Running the tests and viewing their progress
Running the tests and viewing their progress: the Status panel
Once you have configured the tests and gone through the Pre-run check list, from
any screen, click the green Start button. The application acquires and analyzes
the data, then displays a report when the tests are completed.
While the tests are running, other applications may display windows in the
background. The TekScope application takes precedence over other applications,
but you can switch to other applications using the Alt+Tab key combination. To
keep the TekExpress Automotive Ethernet application on top, select the Keep On
Top from the Options menu in the upper right corner.
TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help 51
Running Tests
Viewing the progress of
analysis
The Status panel displays a record of the test as it is executed. By default, the
application switches to this panel after you click the Start button to run a test.
You can choose from the following two views by selecting the named tab, even
while a test is in progress:
Test Status view
Test Status tab
Figure 20: Test status tab
The Test Status tab presents a collapsible table with information about each test
as it is running. To collapse and expand the table rows, click the expand ( )/( )
collapse button.
52 TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help
Running Tests
Table 13: Status tab table
Column Description
Test Name Name of the test
Acquisition Describes the type of data being acquired
Acquire Status Progress of the acquisition:
■
To be started
■
Started Acquisition
■
Completed Acquisition
Analysis Status Progress state of the analysis:
■
To be started
■
In Progress
■
Completed
■
Aborted
Log View
Log View tab
■
Skipped
Figure 21: Log view
The Log View tab provides a list of actions that happen as the test executes. You
can use this tab to review or troubleshoot tests.
TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help 53
Running Tests
Table 14: Log view options
Item Description
Message History This window time-stamps and displays all run
messages.
Auto Scroll Select this check box to have the program
automatically scroll down as information is
added to the log during test execution.
Clear Log Click this button to clear all messages in the
Message History area.
Save Use to save the log file as a text file for
examination. Displays a standard Save File
window and saves the status messages file that
you specify.
See also
Before you click start
Pre-run check list
Configure email notification
54 TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help
Viewing Plots
Viewing plots
The Plots panel displays a summary of plot generated during run. The plots have
zoom, cursors, save, dock/undock, and select test features.
Types of plots
Following are different plots generated during run, based on the measurement(s)
selected.
TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help 55
Viewing Plots
■
Transmit Clock Frequency
Figure 22: Transmit Clock Frequency - 1000BASE-T1 Histogram Plot
Figure 23: Transmit Clock Frequency - 1000BASE-T1
56 TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help
Viewing Plots
Figure 24: Transmit Clock Frequency - 100BASE-T1
TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help 57
Viewing Plots
■
Transmitter Timing Jitter
Master Jitter
Figure 25: Master Jitter - 1000BASE-T1 Histogram plot
Figure 26: Master Jitter - 1000BASE-T1
58 TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help
Viewing Plots
Figure 27: Master Jitter - 100BASE-T1
Slave Jitter
Figure 28: Slave Jitter - 1000BASE-T1 Slave Histogram plot
TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help 59
Viewing Plots
Figure 29: Slave Jitter - 1000BASE-T1
Figure 30: Slave Jitter - 100BASE-T1
60 TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help
■
Transmitter Output Droop
Viewing Plots
Figure 31: Transmitter Output Droop (Negative and Positive) - 1000BASE-T1: Positive
Figure 32: Transmitter Output Droop (Negative and Positive) - 1000BASE-T: Negative
TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help 61
Viewing Plots
Figure 33: Transmitter Output Droop (Negative and Positive) - 100BASE-T1: Positive
Figure 34: Transmitter Output Droop (Negative and Positive) - 100BASE-T1: Negative
62 TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help
■
Transmitter Power Spectral Density
Viewing Plots
Figure 35: Transmitter Power Spectral Density - 1000BASE-T1
Figure 36: Transmitter Power Spectral Density - 100BASE-T1
TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help 63
Viewing Plots
■
Transmitter Distortion
Error value
Figure 37: Error Value - 1000BASE-T1
Figure 38: Error Value - 100BASE-T1
64 TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help
Viewing Plots
Peak Distortion
Figure 39: Peak Distortion - 1000BASE-T1
TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help 65
Viewing Plots
Figure 40: Peak Distortion - 100BASE-T1
66 TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help
■
Return Loss
Viewing Plots
Figure 41: Return Loss - 1000BASE-T1
Figure 42: Return Loss - 100BASE-T1
TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help 67
Viewing Plots
Figure 43: 100Base-T1 Return Loss Load Calibration
Figure 44: 100BASE-T1 Return Loss Short Calibration
68 TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help
Viewing Plots
Figure 45: 100BASE-T1 Return Loss Open Calibration
See also
Known limitations
TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help 69
Viewing Plots
70 TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help
Viewing Results
Viewing test results: the Results panel
When a test completes running, the application switches to the Results Panel.
Set result viewing preferences from the Preferences menu in the upper right
corner.
Each test result occupies a row in the Results table. By default, results are
displayed in summary format, with the measurement details collapsed, and with
the Pass/Fail column visible. You can change the display view.
■
To expand all test rows listed, from the Preferences menu in the upper right
corner, select View Results Details.
■
To expand a collapsed test row, click the plus button ( ) to the left of the
test row.
■
To collapse all expanded test rows, select Preferences > View Results
Summary.
■
To collapse a single expanded test row, click the minus button (
of the test row.
■
To remove or restore the Pass/Fail column, select Preferences > Show Pass/
Fail.
■
To enable or disable the wordwrap feature, select Preferences > Enable
Wordwrap.
■
To expand the width of a column, place the cursor over the vertical line that
separates the column from the one to the right. When the cursor changes to a
double-ended arrow, hold down the mouse button and drag the column to the
desired width.
■
To sort the test information by column, click the column head. When sorted
in ascending order, a small up arrow is displayed. When sorted in descending
order, a small down arrow is displayed.
■
To clear all test results displayed, click Clear
button.
) to the left
TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help 71
Viewing Results
Results preferences
See also
Figure 46: Results preferences
Setting up tests the Setup panel
Running the tests and viewing their progress: the Status panel
72 TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help
Configuring and Viewing Reports
Configuring and viewing reports: the Reports panel
Use the Report panel to browse for name, and save reports, select report viewing
options, and to view reports.
Figure 47: Reports panel
Naming a Report
Use the Reports panel to select the naming convention to use for the report. By
default, the test report file is located in the session folder to which it belongs, and
gets overwritten each time you run the test under the same device name if you
don’t change the test report name before running the test.
If you do not want your test results to be overwritten each time you run any test,
always give the report a unique name, or select to have the name increment each
time you run a particular test. Generally, you would select report options before
running a test, or when creating and saving test setups. Report settings are
included in saved test setups.
Selecting Report Options
■
Report Name
TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help 73
Configuring and Viewing Reports
Displays the default name and location where the report will be saved when
generated.
To change the report name or location, type over the current folder path and name
and then save the test setup. Be sure to include the entire folder path, the file
name, and the file type. For example: C:\Documents and Settings\your user name
\My Documents\My TekExpress\Automotive Ethernet\DUT001_group1.mht.
To open an existing report, click Browse button, locate the report file and then
click View button.
NOTE. You cannot change the file location using the Browse button.
■
Save As Type
Saves a report in a file type different from the default. Lists supported file types
to choose from (Web Archive (*mht,*mhtm), PDF (*pdf) ), CSV (*csv) ) .
NOTE.
■
The CSV file will open Excel, if available. Otherwise, it will open in Notepad.
■
If you select a file type different from the default, be sure to change the report
file name extension in the Report Name field to match.
■
Auto increment report name if duplicate
If the application finds a report with the same name as the one being generated,
the application automatically increments the name of the report. For example:
DUT001, DUT002, DUT003
■
Include User Comments
Select to include any comments about the test that you or another user added in
the DUT tab of the Setup panel. Comments appear in the Comments section
under the summary box at the beginning of each report.
■
Append Reports
This option adds new report data to the end of an existing report of the same
name. This option is deselected by default.
■
View Report After Generating
Automatically opens the report in your Web browser when the test completes.
This option is selected by default.
NOTE. If you unchecked this option before running a test but now would like to
view the report, then when analysis is complete, click the Browse button at the
top of the Reports panel and navigate to the report file.
Viewing a Report
74 TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help
Configuring and Viewing Reports
You can view any report by locating and opening the report file, which ends
in .mht unless you changed the file type before running the report.
NOTE. The application automatically zooms the test report on the scope along
with waveform details, after completion of test.
The top of the report displays information about the instruments and probes used,
the duration of the test, software versions, and some summary test information.
Below that is a table that shows the test name, measurement details, various
measurements, test result (pass/fail), Compliance Mode status (Yes/No), and
analysis time. Additional test parameter information that does not fall into the
other columns is put in the Comments column.
Report example
Figure 48: Report example for 1000BASE-T1
Figure 49: Report example for 100BASE-T1
TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help 75
Configuring and Viewing Reports
See also
Setting up tests: the Setup panel
Running the tests and viewing their progress: the Status panel
Viewing test results: the Results panel
About saving and recalling test setups
76 TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help
Saving and Recalling Test Setups
About saving and recalling test setups
TekExpress Automotive Ethernet application opens with the default test setup
selected. Any time you want to create a new test setup, you can select the default
test setup to clear the previous test setup selections and take the settings back to
their defaults.
You can run a test before or after saving a setup. When you save a setup, the
selected oscilloscope, general parameters, acquisition parameters, measurement
limits, prerecorded waveform files (if applicable), test, and other configuration
settings are all saved under the setup name. You can open a setup and click Start
button without having to do any other setting up except ensuring that the
oscilloscope is detected and ready. For details, see Before you click start.
See Also
Save a test setup
Recall a saved test setup
Create a new test setup based on an existing one
Delete a test setup
Setting up tests: the Setup panel
TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help 77
Saving and Recalling Test Setups
Saving a test setup
Save a test setup before or after running a test using the parameters you want
saved. You can create a new setup from any setup you have open or from the
default setup. When you select the default test setup, all parameters are returned
to their defaults. The following instructions start from the default setup:
1. From the Options menu, select Default Test Setup.
2. Select the desired options in the Setup panel.
3. Select the desired report options.
4. If desired, run the test to ensure that it captures the information you want. If it
does not, edit the parameters.
5. From the Options menu, select Save Test Setup.
6. Name the test and, then click Save button.
See Also
About test setups
Recall a saved test setup
Create a new test setup based on an existing one
Delete a test setup
Recalling a saved test setup
These instructions are for recalling saved test setups.
1. From the Options menu, select Open Test Setup.
2. In the File Open dialog box, select the desired setup from the list, and then
click Open button.
See also
About Test Setups
Save a Test Setup
Create a New Test Setup Based on an Existing One
Delete a Test Setup
78 TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help
Saving and Recalling Test Setups
Creating a new test setup based on an existing one
Use this method to create a variation on a test setup without having to create the
setup from the beginning.
1. From the Options menu, select Open Test Setup.
2. In the File Open dialog box, select the desired setup from the list, and then
click Open.
3. Modify the parameters as desired.
4. From the Options menu, select Save Test Setup As.
5. In the File Save As dialog box, enter a test setup name, and then click Save.
See also
About test setups
Save a test setup
Recall a saved test setup
Deleting a test setup
Delete a test setup
If you no longer need a test setup, delete it from the test setup list in the Options
menu using these instructions.
Each saved test setup consists of two main parts, the test setup file and the test
setup folder, both named for the test session.
1. Ensure the setup you want to delete is not currently selected in TekExpress
Automotive Ethernet.
2. Navigate to the Automotive Ethernet folder where test setup files are stored.
For example, X:\Automotive Ethernet\(test setup name).
3. Locate the test setup file, and then delete it.
This removes the setup from the list in the Options menu.
4. Locate the test setup folder. If you want to keep any of the session files,
move them out of the test setup folder and then delete the test setup folder.
See also
About test setups
Save a test setup
Recall a saved test setup
Create a new test setup based on an existing one
TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help 79
Saving and Recalling Test Setups
80 TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help
Automotive Ethernet measurements
Transmitter Clock Frequency
Transmitter Clock Frequency measurement is applicable for both 100BASE-T1
and 1000BASE-T1
Test setup for Transmitter
Clock Frequency
Specification
Required test equipment
for 1000BASE-
T1/100BASE-T1
Test setup procedure for
Transmitter Clock
Frequency for 1000BASET1/100BASE-T1 using TF-
XGbT fixture
1000BASE-T1
■
Physical Layer Specifications (IEEE Std 802.3bp™-2016) a parameter for
1 Gb/s Operation over a Single Twisted-Pair Copper Cable section
97.5.3.6 Transmitter clock frequency test
100BASE-T1
■
BroadR-Reach Physical Layer Transceiver Specification for Automotive
Applications, version 3.2, section 5.1.3 or IEEE P802d3bwTM (100 BASE
T1) section 96.5.4.5 transmitter specifications
■
BroadR-Reach Physical Media Attachment Test Suite version 2.0, section
5.5
In addition to the DUT and oscilloscope, you will need the following:
■
One supported differential probe.
■
Short RJ45 connector
■
Test fixture: TF-XGbT
The Transmitter Clock Frequency measurement setup involves the DUT, test
fixture, and the oscilloscope.
Connect the equipment as shown in the below connection diagram and as
explained in the following procedure:
1. Select the Suite type on the DUT panel.
2. Set the DUT to generate and transmit test mode 2 signal for 1000BASE-T1
and 100BASE-T1.
3. Connect the DUT Ethernet cable to J5 Ethernet port (TC1 segment) of TFXGbT test fixture.
4. Connect the differential probe to P12 and the configured channel of the
oscilloscope and also terminate the SMA pins J11 and J13 with
50 terminators.
TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help 81
Automotive Ethernet measurements
Test setup procedure
Figure 50: Connection diagram for Test setup procedure for Transmitter Clock Frequency,
Transmitter Timing Jitter-MDI Jitter, Transmitter Timing Jitter-Master Jitter, Transmitter
Timing Jitter-Slave Jitter, Transmitter Output Droop, and Transmitter Power Spectral
Density
NOTE.
Ensure that the "+" on the probe tip aligns with on the text fixture board. This
takes care of the polarity being not reversed.
82 TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help
Automotive Ethernet measurements
Measurement setup and
algorithm for 1000BASE-
T1/100BASE-T1
Table 15: Measurement setup and algorithm
Item Requirements
Configuration parameters 1. Record Length
Signal type Test mode 2 for 1000BASE-T1 (125 MHz +/-
100 ppm)
Test mode 2 for 100BASE-T1(66.667 MHz +/100 ppm)
Measurement algorithm outputs 100BASE-T1:
■
Clock frequency
■
Number of unit intervals
1000BASE-T1
■
Transmit clock frequency
■
Transmit symbol frequency
■
Number of unit intervals
Measurement algorithm inputs Test mode 2 signal captured in differential form
TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help 83
Automotive Ethernet measurements
Item Requirements
Limits 1000BASE-1:
Transmit Clock Frequency
■
Lower limit: 124.9875 MHz
■
Upper limit: 125.0125 MHz
Transmit symbol frequency
■
Lower limit: 749.9250 MHz
■
Upper limit: 750.0750 MHz
100BASE-T1
■
Lower limit: 66.6603 MHz
■
Upper limit: 66.6736 MHz
Plots Plot showing multiple cycles of clock frequency
and Transmit Clock Period Histogram plot (for
100BASE-T1 only)
Measurement algorithm
TekExpress Automotive Ethernet Compliance Solution automatically executes
the calculations described below for the Transmit Clock Frequency measurement.
1000BASE-T1
1. Configure DUT to Test mode 2. The test mode 2 signal is a clock signal
where the PHY shall transmit a continuous pattern of three {+1} symbols
followed by three {–1} symbols with the transmitted symbols timed from its
local clock source of 750 MHz. 1000BASE-T1 PHY shall provide access to a
frequency reduced version of the transmit symbol clock or TX_TCLK125.
This 125 MHz test clock is one sixth frequency divided version of
TX_TCLK that times the transmitted symbols.
2. Compute and verify the clock frequency between the High and Low limits as
mentioned in the table above.
100BASE-T1
1. Configure DUT to Test mode 2. The test mode 2 signal is a clock signal
where the PHY shall transmit the data symbol sequence (+1, -1) repeatedly
on all channels.
2. Compute and verify the clock frequency between the High and Low limits as
mentioned in the table above.
84 TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help
Automotive Ethernet measurements
See also
Plots
Transmitter Timing Jitter-MDI Jitter
Transmitter Timing Jitter_MDI Jitter measurement is applicable for 1000BASET1 Suite.
Transmitter Timing Jitter-MDI Jitter
Specification
Required test equipment
1000BASE-T1
■
Physical Layer Specifications (IEEE Std 802.3bp™-2016) a parameter for
1 Gb/s Operation over a Single Twisted-Pair Copper Cable section
97.5.3.3 Transmitter Timing Jitter-MDI Jitter
In addition to the DUT and oscilloscope, you will need the following:
1000BASE-T1
■
One supported differential probe.
■
Short RJ45 connector
Test setup procedure for
Transmitter Clock
Frequency for 1000BASE-
T1 using TF-XGbT fixture
■
Test fixture: TF-XGbT
The Transmitter Clock Frequency measurement setup involves the DUT, test
fixture, and the oscilloscope.
Connect the equipment as shown in below connection diagram and as explained
in the following procedure:
1. Select the Suite type on the DUT panel.
2. Set the DUT to generate and transmit test mode 2 signal for 1000BASE-T1.
3. Connect the DUT Ethernet cable to J5 Ethernet port (TC1 segment) of TF-
XGbT test fixture.
4. Connect the differential probe to P12 and the configured channel of the
oscilloscope and also terminate the SMA pins J11 and J13 with 50 Ω
terminators.
TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help 85
Automotive Ethernet measurements
Test setup procedure
Figure 51: Connection diagram for Test setup procedure for Transmitter Clock Frequency,
Transmitter Timing Jitter-MDI Jitter, Transmitter Timing Jitter-Master Jitter, Transmitter
Timing Jitter-Slave Jitter, Transmitter Output Droop, and Transmitter Power Spectral
Density
NOTE. Ensure that the "+" on the probe tip aligns with on the text fixture
board. This takes care of the polarity being not reversed.
86 TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help
Automotive Ethernet measurements
Measurement setup and
algorithm
Table 16: Measurement setup and algorithm
Item Requirements
Configuration parameters 1. Record Length
2. Edge Type
3. Hysteresis
Signal type Test mode 2
Measurement algorithm outputs
Measurement algorithm inputs Test mode 2 signal captured in differential form
Limits MDI Jitter RMS:
■
MDI Jitter RMS
■
MDI Jitter peak to peak
Measurement algorithm
■
Lower Limit: NA
■
Upper Limit: 5 pico seconds
MDI Jitter peak to peak:
■
Lower Limit: NA
■
Upper Limit: 50 pico seconds
Plots Plot showing Transmit Timing Jitter-MDI Master
Jitter, Transmit MDI Jitter TIE data Histogram
TekExpress Automotive Ethernet Compliance Solution automatically executes
the calculations described below for the measurement Transmitter Timing JitterMDI Jitter.
1. Test mode 2 is for Transmitter Jitter testing on MDI when transmitter is in
MASTER timing mode. When test mode 2 is enabled, the 1000BASE-T1
PHY shall transmit a continuous pattern of three {+1} symbols followed by
three {–1} symbols with the transmitted symbols timed from its local clock
source of 750 MHz. The transmitter output is a 125 MHz signal.
2. Compute and verify the clock frequency between the High and Low limits as
mentioned in the above table.
TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help 87
Automotive Ethernet measurements
See also
Plots
Transmitter Timing Jitter Master and Slave
This test confirms that the transmitter timing jitter of the PMA is within
conformance limits.
Test setup for (Master Jitter)
Specification
1000BASE-T1
■
Physical Layer Specifications (IEEE Std 802.3bp™-2016) a parameter for
1 Gb/s Operation over a Single Twisted-Pair Copper Cable section
97.5.3.3 Transmitter Timing Jitter-MDI Jitter
100BASE-T1
■
BroadR-Reach Physical Layer Transceiver Specification for Automotive
Applications, version 3.2, section 5.4.3 or IEEE P802d3bwTM (100 BASE
T1) section 96.5.4.3 transmitter specifications
■
BroadR-Reach Physical Media Attachment Test Suite version 2.0, section
5.3
Required test equipment
Test setup procedure for
Timing Jitter (Master) test
In addition to the DUT and oscilloscope, you will need the following:
1000BASE-T1/100BASE-T1
■
One supported differential probe.
■
Short RJ45 connector
■
Test Fixture: TF-XGbT
The Timing Jitter (Master) measurement setup involves the DUT, test fixture,
and the oscilloscope.
Connect the equipment as shown in the below connection diagram and as
explained in the following procedure:
1. Select the Suite type on the DUT panel.
2. Set the DUT to generate and transmit a test mode 2 signal for 100BASE-T1
and test mode 1 signal for 1000BASE-T1.
3. Connect the DUT Ethernet cable to J5 Ethernet port (TC1 segment) of TFXGbT test fixture.
4. Connect the differential probe to P12 and the configured channel of the
oscilloscope and also terminate the SMA pins J11 and J13 with 50 Ω
terminators.
88 TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help
Automotive Ethernet measurements
Test setup (Slave Jitter)
Specifications
Required test equipment
1000BASE-T1
■
Physical Layer Specifications (IEEE Std 802.3bp™-2016) a parameter for
1 Gb/s Operation over a Single Twisted-Pair Copper Cable section in
97.5.3.3 Transmitter Timing Jitter-MDI Jitter
100BASE-T1
■
BroadR-Reach Physical Layer Transceiver Specification for Automotive
Applications, version 3.2, section 5.4.3 or IEEE P802d3bwTM (100 BASE
T1) section 96.5.4 transmitter specifications
■
BroadR-Reach Physical Media Attachment Test Suite version 2.0, section
5.3
In addition to the DUT and oscilloscope, you will need the following:
1000BASE-T1/100BASE-T1
■
One supported differential probe
■
Short RJ45 connector
■
Test fixture: TF-XGbT
■
Link partner (This is needed to put the DUT to slave mode)
Test setup procedure for
Timing Jitter (Slave) test
The Timing Jitter (Slave) measurement setup involves the DUT, test fixture, link
partner, and oscilloscope.
Connect the equipment as shown in this connection diagram and as explained in
the following procedure:
1. Select the Suite type on the DUT panel
2. Set the DUT to generate and transmit a test mode 1 signal for 1000BASE-T1
and test mode 3 for 100BASE-T1.
3. Connect the DUT to the link partner and establish a normal Ethernet
connection.
4. Use the appropriate cable or probe to bring the 100BASE-T1 DUT SLAVE
TX_TCLK or 1000BASE-T1 DUT SLAVE TX_TCLK125 to the configured
channel of the oscilloscope.
NOTE. You will need to choose either an SMA cable, a BNC cable, or a
differential probe based on the interface available on the DUT for TX_TCLK.
Slave transmitter timing jitter can only performed when the 100BASE-T1
DUT SLAVE TX_TCLK or 1000BASE-T1 DUT SLAVE TX_TCLK125 is
exposed and accessible.
TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help 89
Automotive Ethernet measurements
Test setup procedure
Figure 52: Connection diagram for Transmitter Clock Frequency, Transmitter Timing JitterMaster Jitter, Transmitter Timing Jitter-Slave Jitter, Transmitter Output Droop, and
Transmitter Power Spectral Density
NOTE. Ensure that the "+" on the probe tip aligns with on the text fixture
board. This takes care of the polarity being not reversed.
90 TekExpress Automotive Ethernet (100/1000BASE-T1) Printable Application Help
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