TekExpress BroadR-Reach (100BASE-T1)
Analysis Solution
Printable Application Help
*P077088105*
077-0881-05
TekExpress BroadR-Reach (100BASE-T1)
Analysis Solution
Printable Application Help
www.tek.com
077-0881-05
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 ................................................................................................................. 5
File Name Extensions ..................................................................................................................... 6
Getting Started
Compatibility .................................................................................................................................. 7
Minimum System Requirements .................................................................................................... 8
Install the Software ....................................................................................................................... 10
Activate the License ..................................................................................................................... 11
View Version and License Information ........................................................................................ 12
Start the Application ..................................................................................................................... 12
Options Menu ............................................................................................................................... 14
View Connected Instruments: the Instrument Control Settings ................................................... 15
Application Controls ..................................................................................................................... 17
Exit the Application ...................................................................................................................... 18
Application Basics
Application Basics ........................................................................................................................ 19
Setting Up Tests
Setting Up Tests: the Setup Panel ................................................................................................. 21
Selecting Device Parameters: the DUT tab .................................................................................. 23
Selecting Tests: the Test Selection tab ......................................................................................... 24
Selecting Acquisitions .................................................................................................................. 26
Acquiring Waveforms: the Acquisitions tab ........................................................................... 26
Acquire Live Waveforms for Analysis ................................................................................... 30
Use Pre-recorded Waveforms for Analysis ............................................................................. 31
Acquire Step By Step .............................................................................................................. 31
Configuring Tests: the Configuration Screen ............................................................................... 34
Compliance Mode or User Defined Mode ................................................................................... 37
BroadR-Reach 3.2 (100BASE-T1) Printable Application Help i
Table of Contents
Measurement Parameter Descriptions .......................................................................................... 38
Calibration .................................................................................................................................... 40
Running Tests
Before You Click Start ................................................................................................................. 45
Pre-Run Check List ...................................................................................................................... 48
Configure Email Notification ....................................................................................................... 49
Running the Tests and Viewing their Progress: the Status Panel ................................................. 50
Viewing Plots
Viewing Plots ............................................................................................................................... 55
Viewing Results
Viewing Test Results: the Results Panel ...................................................................................... 61
Configuring and Viewing Reports
Configuring and Viewing Reports: the Reports Panel ................................................................. 63
Saving and Recalling Test Setups
About Saving and Recalling Test Setups ..................................................................................... 67
Saving a Test Setup ...................................................................................................................... 68
Recalling a Saved Test Setup ....................................................................................................... 68
Creating a New Test Setup Based on an Existing One ................................................................. 69
Deleting a Test Setup .................................................................................................................... 69
BroadR-Reach measurements
Transmitter Clock Frequency ....................................................................................................... 71
Transmitter Timing Jitter Master and Slave ................................................................................. 73
Transmitter Power Spectral Density ............................................................................................. 79
Transmitter Output Droop ............................................................................................................ 82
Transmitter Peak Differential Output ........................................................................................... 85
Transmitter Distortion .................................................................................................................. 87
Return Loss ................................................................................................................................. 104
Known Limitations ..................................................................................................................... 115
ii BroadR-Reach 3.2 (100BASE-T1) Printable Application Help
Table of Contents
Measurement Error Messages
Measurement Error Messages .................................................................................................... 117
TekExpress Programmatic Interface
About the Programmatic Interface ............................................................................................. 121
Requirements for Developing TekExpress Client ...................................................................... 122
Remote Proxy Object .................................................................................................................. 123
Client Proxy Object .................................................................................................................... 124
Program Examples ...................................................................................................................... 125
Client Programmatic Interface Example .................................................................................... 128
BRR Application Commands ..................................................................................................... 131
About TekExpress BRR Application Commands ................................................................. 131
Connect Through an IP Address ........................................................................................... 131
Lock the Server ..................................................................................................................... 133
Disable the Popups ................................................................................................................ 134
Set or Get the DUT ID .......................................................................................................... 135
Set the Configuration Parameters for a Suite or Measurement ............................................. 137
Query the Configuration Parameters for a Suite or Measurement ........................................ 139
Select a Measurement ............................................................................................................ 142
Select a Suite ......................................................................................................................... 144
Run with Set Configurations or Stop the Run Operation ...................................................... 146
Get or Set the Timeout Value ................................................................................................ 147
Wait for the Test to Complete ............................................................................................... 149
After the Test is Complete ..................................................................................................... 152
Save Recall or Check if a Session is Saved ........................................................................... 158
Unlock the Server .................................................................................................................. 160
Disconnect from the Server ................................................................................................... 161
Handle Error Codes ............................................................................................................... 162
BroadR-Reach 3.2 (100BASE-T1) Printable Application Help iii
Table of Contents
iv BroadR-Reach 3.2 (100BASE-T1) Printable Application Help
Welcome
The TekExpress BroadR-Reach (100BASE-T1) (BRR) is an automated
compliance test solution for performing electrical characterization of the BroadRReach transmitter as per OPEN Alliance BroadR-Reach (OABR) specification
version 3.2. The IEEE P802.3bw D3.3 (100BASE-T1) specification has a stated
objective to provide electrical interoperability for 100 Mb/s client interface in
reference to the OABR PHY v3.2 specification. BRR and 100BASE-T1 maintain
the same electrical test requirements as it relates to the Physical Medium
Attachment (PMA) transmitter electrical specifications.
BroadR-Reach (100BASE-T1) is an Ethernet-based point-to-point technology for
automotive applications. It provides five test mode signals for electrical
characterization of the Physical Medium Attachment (PMA) sublayer.
Figure 1: Setup panel
BroadR-Reach 3.2 (100BASE-T1) Printable Application Help v
Welcome
Supported Tests
■
Transmitter Clock Frequency
■
Transmitter Timing Jitter Master and Slave
■
Transmitter Output Droop
■
Transmitter Power Spectral Density
■
Transmitter Peak Differential Output
■
Transmitter Distortion
■
Return Loss
Test modes
Table 1: Test modes
Required test mode BroadR-Reach measurement
1 Transmitter Output Droop
2 Transmitter Timing Jitter
See also:
■
Transmitter Timing Jitter-Master Jitter
■
Transmitter Timing Jitter-Slave Jitter
Transmitter Clock Frequency
4 Transmitter Distortion
Return Loss
5 Transmitter Power Spectral Density
5 Transmitter Peak Differential Output
Application Basics
Equipment Connection Setup
Install the Software
Application Directories and Usage
File Name Extensions
vi BroadR-Reach 3.2 (100BASE-T1) Printable Application Help
Operating Basics
AWG\AFG Automation
AWG\AFG automation is supported in the TekExpress BroadR-Reach
(100BASE-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 BRR Automates AWG
\AFG
Automation of the AWG\AFG is taken care in the BRR application in the
following way:
1. Refresh the Instruments Control Settings to observe the connected AWG
\AFG through GPIB.
Figure 2: Instrument Control Settings
BroadR-Reach 3.2 (100BASE-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 BroadR-Reach\AWG Waveforms.
2 BroadR-Reach 3.2 (100BASE-T1) Printable Application Help
Operating Basics
Related Documentation
The following information is available as part of the BRR documentation 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 BRR
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 BroadR-Reach folder
BroadR-Reach 3.2 (100BASE-T1) Printable Application Help 3
Operating Basics
The following table lists the default directory names and their usage.
Table 3: Application directories and usage
Directory names Usage
InstallDir\TekExpress\TekExpress BroadRReach
TekExpress BroadR-Reach\AWG Waveforms It contains AWG waveforms ( AWG 5K, 7K and
TekExpress BroadR-Reach\Bin It contains miscellaneous BroadR-Reach
TekExpress BroadR-Reach\Compliance Suites It contains compliance-specific files and filter
TekExpress BroadR-Reach It contains the Manuals.
TekExpress BroadR-Reach\Examples It contains various support files.
TekExpress BroadR-Reach\ICP It contains instrument and BroadR-Reach
TekExpress BroadR-Reach\Images It contains images required for the application.
TekExpress BroadR-Reach\Lib It contains utility files specific to the BroadR-
TekExpress BroadR-Reach\Report Generator It contains style sheets for report generation.
TekExpress BroadR-Reach\Tools It contains instrument and BroadR-Reach
It contains the application and associated files.
AFG waveforms ) that get used in return loss
and distortion with disturbing signal .
application libraries.
files.
application-specific interface libraries.
Reach application.
application-specific files.
See Also
View Test-Related Files
4 BroadR-Reach 3.2 (100BASE-T1) Printable Application Help
Operating Basics
View Test-Related Files
Files related to BRR tests are stored in the X:\BRR\Untitled Session shared
folder. In the BRR 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 BRR
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.
See Also
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.
The first time you run a new, unsaved session, the session files are stored in the
X:\BRR\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.
File Name Extensions
BroadR-Reach 3.2 (100BASE-T1) Printable Application Help 5
Operating Basics
File Name Extensions
The TekExpress BRR 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
6 BroadR-Reach 3.2 (100BASE-T1) Printable Application Help
Getting Started
Compatibility
Supported Oscilloscopes
Supported AWG/AFGs
The TekExpress BRR application runs on the following Tektronix oscilloscopes
with bandwidths of 1 GHz or greater:
■
DPO5104, DPO5204, MSO5104, MSO5204
■
DPO5104B, DPO5204B, MSO5104B, MSO5204B
■
DPO7104C, DPO7254C, DPO7354C
■
DPO70404C, DPO70604C, DPO70804C, DPO71254C, DPO71604C,
DPO72004C
■
DPO/DSA 70KD series
■
MSO70404C, MSO70604C, MSO70804C, MSO71254C, MSO71604C,
MSO72004C
■
DPO72504DX, DPO73304DX, DPO72304DX, DPO72504DX,
DPO73304DX, MSO72304DX, MSO72504DX, MSO73304DX
The TekExpress BRR application supports the following Tektronix arbitrary
waveform and arbitrary function generators:
■
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
NOTE.
■
You may use AWG automation for Return Loss and Transmitter Distortion
with Disturbing Signal measurements.
■
AFG3100 & AFG3200 (having limit up to 50 MHz) cannot be used for
Return Loss measurements.
■
Without an amplifier, the AWG7000 series generates a maximum voltage of
2 Volt peak-to-peak signal, which cannot meet the 5.4 Volt requirement for
the disturber signal for Transmitter Distortion test.
BroadR-Reach 3.2 (100BASE-T1) Printable Application Help 7
Getting Started
Probes
The TekExpress BRR application supports the following Tektronix differential
probes:
■
TDP1500, TDP3500, P6248, and P6247 differential probes
Test Fixtures
The TekExpress BRR application supports the TF-GBE-BTP and TF-BRR-CFD
test fixtures.
See Also
Minimum System Requirements
Minimum System Requirements
The following table shows the minimum system requirements for an oscilloscope
to run TekExpress.
Table 5: System requirements
Oscilloscope For a list of compatible oscilloscopes, see
Compatibility.
Processor Same as the oscilloscope
Operating System Same as the oscilloscope
Memory Same as the oscilloscope
Hard Disk Same as the oscilloscope
Display Same as the oscilloscope
Firmware TekScope 7.6.0 and later (Windows 7, 64-bit
only)
Software
■
TekExpress Framework version 4.0
■
Iron Python 2.7.3
■
PyVisa 1.0.0.25
■
Microsoft .NET 4.0 framework
■
Microsoft Internet Explorer 6.0 SP1 or later
■
Adobe Reader 8.0 or equivalent software
for viewing portable document format (PDF)
files
1
1
If TekExpress is running on an instrument having a video resolution lower than 800 x 600. it is recommended that you connect a secondary monitor,
which must be enabled before launching the application.
8 BroadR-Reach 3.2 (100BASE-T1) Printable Application Help
Getting Started
Probes Following differential probes are supported:
■
All measurements: P6247, P6248,
P6330,TDP1500, TDP3500. For more
details, refer to the BroadR-Reach
measurements section.
BRR Fixtures TF-GBE-BTP, TF-BRR-CFD
Other Devices
Frequency Divider The TF-BRR-CFD test fixture allows you to
Cables Six BNC cables/SMA cables with BNC to SMA
■
Microsoft compatible mouse or compatible
pointing device
■
Four USB ports (two USB ports minimum)
■
PCI-GPIB or equivalent interface for
instrument connectivity
2
phase lock frequency between DUT Transmitter
Clock, oscilloscope , and AWG/AFG sources.
Converts DUT Transmitter Clock from
66.666MHz to 10MHz.
connectors: one TCA-BNC or TCA-SMA.
See Also
Compatibility
2
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.
BroadR-Reach 3.2 (100BASE-T1) Printable Application Help 9
Getting Started
Install the Software
The software can be installed on any compatible instrument running Windows 7.
1. Close all applications (including the TekScope application).
2. Go to the www.tektronix.com Web site and search for BRR to locate the
installation and download the latest installation file.
3. Double-click the executable file to extract the installation files. After
extraction, the installer launches and displays the Install shield Wizard.
Follow the prompts to install the TekExpress BRR application. The software
automatically installs in C:\Program Files\Tektronix\TekExpress\TekExpress
BroadR-Reach.
The installer updates the TekScope Analyze menu to include TekExpress
BRR:
Figure 4: TekScope window
See Also
Minimum System Requirements
10 BroadR-Reach 3.2 (100BASE-T1) Printable Application Help
Getting Started
Activate the License
Activate the license using the option installation wizard on the oscilloscope.
Follow these steps to activate the TekExpress BRR license:
1. From the oscilloscope menu bar, click Utilities > Option Installation.
The TekScope Option Installation wizard opens.
Figure 5: TekScope Option Installation wizard
2. Instructions for using the Options Installation window to activate licenses for
installed applications is provided in the oscilloscope online help. Press the F1
key on the oscilloscope keyboard to open the Option Installation help topic.
Follow the directions in the topic to activate the license.
See Also
View Version and License Information
BroadR-Reach 3.2 (100BASE-T1) Printable Application Help 11
Getting Started
View Version and License Information
Use the following instructions to view application version information and
license information for the application modules.
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 BRR.
2. To view the Option key, look in the Option Installation Key section. When
finished, click OK to close the dialog box.
See Also
Start the Application
Activate the License
Options Menu
The first time you open the application after installation, you are required to enter
a license key. The application also checks for a file called Resources.xml located
in the X: drive. If this file is not found, instrument discovery is performed before
launching TekExpress BRR. The Resources.xml file contains information
regarding instruments available on your network.
NOTE. When the application starts, it checks for the appropriate license key. If
the valid license key is not present, the application switches to the Evaluation
mode. If the application fails to detect the key, it continues to run in Evaluation
mode. You are allowed 10 free trials in Evaluation mode. Each time you open the
application without supplying a valid license key, one of the free trials is used.
To run the BRR application from the TekScope menu, select Analyze >
TekExpress BRR.
12 BroadR-Reach 3.2 (100BASE-T1) Printable Application Help
Getting Started
A initializing screen is displayed, before the launch of the application.
While running the application, you can switch between the oscilloscope screen
and BRR 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.
BroadR-Reach 3.2 (100BASE-T1) Printable Application Help 13
Getting Started
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 It opens an untitled test setup with defaults
selected.
Open Test Setup It opens a saved test setup.
Save Test Setup It saves the current test setup selections.
Save Test Setup As It creates a new test setup based on an existing
one.
Open Recent It displays a menu of recently opened test
setups to select from.
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 BRR 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 BRR installation.
■
It provides a link to the Tektronix Web site.
14 BroadR-Reach 3.2 (100BASE-T1) Printable Application Help
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 6: Instrument Control Settings
BroadR-Reach 3.2 (100BASE-T1) Printable Application Help 15
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 for.
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.
16 BroadR-Reach 3.2 (100BASE-T1) Printable Application Help
Getting Started
Application Controls
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 continuously 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
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.
BroadR-Reach 3.2 (100BASE-T1) Printable Application Help 17
Getting Started
Item Description
Application window move icon
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.
Mini view/ Normal view
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.
Exit the Application
See Also
Options menu
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 on the application title bar.
2. Do one of the following:
■
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..
18 BroadR-Reach 3.2 (100BASE-T1) Printable Application Help
Application Basics
Application Basics
The TekExpress BRR 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:
■
■
■
■
■
■
Set up the tests.
Prepare to run the tests.
Run the tests and view the progress of analysis.
View the results of the tests.
Configure and view reports.
Save and recall test setups.
See Also
Overview and Key Specifications
BroadR-Reach 3.2 (100BASE-T1) Printable Application Help 19
Application Basics
20 BroadR-Reach 3.2 (100BASE-T1) Printable Application Help
Setting Up Tests
Setting Up Tests: the Setup Panel
The Setup panel guides you through the BRR test setup process using tabs. The
options selected in a tab affect the options available in the next tab down.
Figure 7: Setup panel
NOTE. A check mark next to a tab title means you have made changes. However,
if you make changes on a tab that significantly affect a prior tab, the check mark
of the affected tab is replaced with its number, indicating that you should check
the settings on that tab.
■
DUT tab
Here, you can 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
Here, select tests individually or by group, view a short description of a
selected test, and view a schematic showing appropriate device connections.
■
Acquisitions tab
BroadR-Reach 3.2 (100BASE-T1) Printable Application Help 21
Setting Up Tests
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.)
Here, select either Compliance Mode or User Defined Mode, view Global
Settings, select measurement settings, and view or edit test parameter limits.
■
Preferences tab
Here, you may 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
Configuring and Viewing Reports in the Reports Panel
Figure 8: Preference tab
22 BroadR-Reach 3.2 (100BASE-T1) Printable Application Help
Setting Up Tests
Selecting Device Parameters: the DUT tab
Figure 9: Setup panel
1. Click the DUT tab on the Setup panel and specify the DUT ID and the view
settings.
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 and enter up to
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.
BroadR-Reach 3.2 (100BASE-T1) Printable Application Help 23
Setting Up Tests
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 10: Test Selection tab
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.
24 BroadR-Reach 3.2 (100BASE-T1) Printable Application Help
Setting Up Tests
See Also
Setting Up Tests: the Setup Panel
Acquiring Waveforms
Configuring Tests: the Configure button or Configuration tab
Running the Tests and Viewing their Progress: the Status Panel
Figure 11: Example of Schematic Document
BroadR-Reach 3.2 (100BASE-T1) Printable Application Help 25
Setting Up Tests
Selecting Acquisitions
Acquiring Waveforms: the
Acquisitions tab
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:
■
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.
Figure 12: Acquisitions tab with Acquire live waveforms selected
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 possible 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.
26 BroadR-Reach 3.2 (100BASE-T1) Printable Application Help
Setting Up Tests
Table 8: Acquisitions parameters
Column name Function
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.
BroadR-Reach 3.2 (100BASE-T1) Printable Application Help 27
Setting Up Tests
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.
28 BroadR-Reach 3.2 (100BASE-T1) Printable Application Help
Setting Up Tests
1. In the Setup panel, click the Acquisitions tab.
Figure 13: Acquisitions tab with Use pre-recorded waveform files selected
nt
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.
The following table below lists the possible 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.
BroadR-Reach 3.2 (100BASE-T1) Printable Application Help 29
Setting Up Tests
Table 9: Acquisitions parameters
Column name Function
Test Name It displays the name of the
selected test for performing
acquisitions. One or more tests
can perform the same
acquisitions.
Acquisition It updates the location of the
named acquisition.
Record Length It displays the size of the record
in samples.
Disturbing signal It displays whether or not a
disturbing signal is excluded.
Average It displays the record average.
AWG Series It displays the AWG series
model, if present.
TX_TCLK It displays whether or not a
TX_TCLK is excluded.
Hi resolution It displays the resolution.
WaveForm FileName It displays the name and location
of the waveform file to be used
for the measurement. Applies
only to testing using prerecorded
waveforms.
Acquire Live Waveforms
for Analysis
See also. Use Prerecorded Waveforms for Analysis
Acquire Live Waveforms for Analysis
Setting Up Tests the Setup Panel
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
30 BroadR-Reach 3.2 (100BASE-T1) Printable Application Help
Setting Up Tests
Use Pre-recorded
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\BroadR-Reach.
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).
) and select the desired waveform file.
Acquire Step By Step
See also. Acquiring Waveforms the Acquisitions tab
Acquire Live Waveforms for Analysis
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.
BroadR-Reach 3.2 (100BASE-T1) Printable Application Help 31
Setting Up Tests
Table 10: Reference waveforms
Test name Reference waveform
Transmit Timing Jitter – Master Jitter
Transmit Timing Jitter – Slave Jitter
Transmitter Output Droop
Transmit Clock Frequency
32 BroadR-Reach 3.2 (100BASE-T1) Printable Application Help
Setting Up Tests
Test name Reference waveform
Transmitter Distortion
Transmitter Power Spectral Density
Transmitter Peak Differential Output
Return Loss
BroadR-Reach 3.2 (100BASE-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 14: Configure button on Test Selection tab
34 BroadR-Reach 3.2 (100BASE-T1) Printable Application Help
Setting Up Tests
Figure 15: Configuration tab
The BRR 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.
BroadR-Reach 3.2 (100BASE-T1) Printable Application Help 35
Setting Up Tests
Settings
■
Compliance Mode or User Defined Mode
■
Global Settings tab
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 16: 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
36 BroadR-Reach 3.2 (100BASE-T1) Printable Application Help
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 most 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.
BroadR-Reach 3.2 (100BASE-T1) Printable Application Help 37
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 most
parameters if you selected Compliance Mode.
Figure 17: Measurements tab
Table 11: Measurement parameters
Name Unit Range/Allowable
values
Record Length M 1 to 20 Sets the record
Averages NA 2 to 100
2 to 256
2 t0 512
Description Applies to
length to use.
Sets the number
of averages
(number of
acquisitions) for
average mode
acquisition.
Transmit Clock
Frequency
Transmitter Timing
Jitter (Master
Jitter)
Transmitter Timing
Jitter (Slave Jitter)
Transmitter Output
Droop
Transmitter Power
Spectral Density
Return Loss
38 BroadR-Reach 3.2 (100BASE-T1) Printable Application Help
Setting Up Tests
Name Unit Range/Allowable
values
Hardware Clock
Divider
Software Signal
Correction
None NA NA Select to check
Edge
■
Falling
■
Rising
Hysteresis % 1 to 10 Sets the
RBW KHz 1 to 100 Sets the resolution
Center Frequency MHz 1 to 500 Sets the center of
NA NA Select to use the
NA NA Select to use the
Description Applies to
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.
internal software
signal correction to
synchronize the
DUT, disturber
signal source
(AFG/AWG), and
the oscilloscope.
the behavior of the
DUT without any
Ref clock (External
or Internal).
Used to select the
type of edges on
which RMS jitter
will be calculated.
hysteresis in
percentage that
gets used during
edge finding.
bandwidth. This
controls the
bandwidth of the
spectral analyzer
filters.
the frequency
span over which
spectral analysis is
done.
Transmitter
Distortion
Transmitter
Distortion
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
BroadR-Reach 3.2 (100BASE-T1) Printable Application Help 39
Setting Up Tests
Calibration
See Also
Name Unit Range/Allowable
values
Frequency Span MHz 1 to 500 Sets the range of
Smooth NA 0 to 10 Sets the number
Description Applies to
Transmitter Power
frequencies over
which spectral
analysis is done
of samples that
will be used while
smoothing the
return loss
waveform; sets the
averaging filter
length.
Spectral Density
Return Loss
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 can be calibrated:
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.
40 BroadR-Reach 3.2 (100BASE-T1) Printable Application Help
Setting Up Tests
Figure 18: Calibration tab
Return Loss
■
Live calibration
Figure 19: Live calibration
BroadR-Reach 3.2 (100BASE-T1) Printable Application Help 41
Setting Up Tests
NOTE. The live Calibration files are saved in X:\BRR\Calibration folder.
■
Use pre-recorded files
Figure 20: 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
\BroadR-Reach.
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.
Cal Status Displays the status of the calibration: Pending,
Done.
42 BroadR-Reach 3.2 (100BASE-T1) Printable Application Help
Setting Up Tests
Parameter Description
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.
BroadR-Reach 3.2 (100BASE-T1) Printable Application Help 43
Setting Up Tests
44 BroadR-Reach 3.2 (100BASE-T1) Printable Application Help
Running Tests
Before You Click Start
Before Running a Test for the First time
BroadR-Reach 3.2 (100BASE-T1) Printable Application Help 45
Running Tests
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 BroadR-Reach, it creates the following
folders on the Oscilloscope:
■
\Program Files\Tektronix\TekExpress\TekExpress BroadR-Reach
■
\My Documents\My TekExpress\BRR
■
\My Documents\My TekExpress\BRR\Untitled Session
Every time you launch TekExpress BRR.exe, an Untitled Session folder is
created in the BRR folder. The Untitled Session folder is automatically
deleted when you exit the BRR 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.
46 BroadR-Reach 3.2 (100BASE-T1) Printable Application Help
Running Tests
c. In the Advanced Attributes dialog box, ensure that the option Encrypt
contents to secure data is NOT selected.
Example:
Figure 21: 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
BroadR-Reach 3.2 (100BASE-T1) Printable Application Help 47
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 BRR 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
48 BroadR-Reach 3.2 (100BASE-T1) Printable Application Help
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.
Running Tests
Figure 22: 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.
BroadR-Reach 3.2 (100BASE-T1) Printable Application Help 49
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 BRR.
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
PreRun 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 BRR application on top, select the Keep On Top from the
Options menu in the upper right corner.
50 BroadR-Reach 3.2 (100BASE-T1) Printable Application Help
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
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.
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
■
Skipped
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.
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.
BroadR-Reach 3.2 (100BASE-T1) Printable Application Help 51
Running Tests
See also
Before You Click Start
PreRun Check List
Configure Email Notification
Test Status tab
Figure 23: Test status tab
52 BroadR-Reach 3.2 (100BASE-T1) Printable Application Help
Running Tests
Log View tab
Figure 24: Log view
BroadR-Reach 3.2 (100BASE-T1) Printable Application Help 53
Running Tests
54 BroadR-Reach 3.2 (100BASE-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.
■
Transmit Clock Frequency
Figure 25: Transmit Clock Frequency
BroadR-Reach 3.2 (100BASE-T1) Printable Application Help 55
Viewing Plots
■
Transmitter Timing Jitter
Master Jitter
Figure 26: Master Jitter
Slave Jitter
Figure 27: Slave Plot
56 BroadR-Reach 3.2 (100BASE-T1) Printable Application Help
■
Transmitter Output Droop
Viewing Plots
Figure 28: Transmitter Output Droop
■
Transmitter Power Spectral Density
Figure 29: Transmitter Power Spectral Density
BroadR-Reach 3.2 (100BASE-T1) Printable Application Help 57
Viewing Plots
■
Transmitter Distortion
Error value
Figure 30: Error Value
Peak Distortion
Figure 31: Peak Distortion
58 BroadR-Reach 3.2 (100BASE-T1) Printable Application Help
■
Return Loss
Viewing Plots
Figure 32: Return Loss
Return Loss Load
Figure 33: Return Loss Load
Return Loss Short
BroadR-Reach 3.2 (100BASE-T1) Printable Application Help 59
Viewing Plots
Figure 34: Return Loss Short
Return Loss Open
Figure 35: Return Loss Open
See also
Known Limitations
60 BroadR-Reach 3.2 (100BASE-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
BroadR-Reach 3.2 (100BASE-T1) Printable Application Help 61
Viewing Results
See Also
Setting Up Tests the Setup Panel
Configuring and Viewing Reports: the Reports Panel
Running the Tests and Viewing their Progress: the Status Panel
Results Preferences
Figure 36: Results preferences
62 BroadR-Reach 3.2 (100BASE-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 37: 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
BroadR-Reach 3.2 (100BASE-T1) Printable Application Help 63
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\BRR\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
64 BroadR-Reach 3.2 (100BASE-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
See Also
Figure 38: Report example
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
BroadR-Reach 3.2 (100BASE-T1) Printable Application Help 65
Configuring and Viewing Reports
66 BroadR-Reach 3.2 (100BASE-T1) Printable Application Help
Saving and Recalling Test Setups
About Saving and Recalling Test Setups
TekExpress BRR 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
BroadR-Reach 3.2 (100BASE-T1) Printable Application Help 67
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
68 BroadR-Reach 3.2 (100BASE-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
BRR.
2. Navigate to the BRR folder where test setup files are stored. For example, X:
\BRR\(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
BroadR-Reach 3.2 (100BASE-T1) Printable Application Help 69
Saving and Recalling Test Setups
70 BroadR-Reach 3.2 (100BASE-T1) Printable Application Help
BroadR-Reach measurements
Transmitter Clock Frequency
Test setup for Transmitter
Clock Frequency
■
Specification
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
Required test equipment
Test setup procedure for
Transmitter Clock
Frequency
In addition to the DUT and oscilloscope, you will need the following:
■
One supported differential probe.
■
Short RJ45 connector
■
Test fixture: TF-GBE-BTP
The Transmitter Clock Frequency measurement setup involves the DUT, test
fixture, and the oscilloscope.
Connect the equipment as shown in connection diagram and as explained in the
following procedure.
1. Set the DUT to generate and transmit test mode 1 signal.
2. Connect the Ethernet cable to J490 and the test port of the DUT.
If the DUT does not have an RJ45 connector, then strip the RJ45 cable on
one side and solder it to the appropriate pins on the DUT.
3. Connect the differential probe to P9 and the configured channel of the
oscilloscope.
BroadR-Reach 3.2 (100BASE-T1) Printable Application Help 71
BroadR-Reach measurements
Test setup procedure
Measurement setup and
algorithm
Figure 39: Connection diagram for Test setup procedure for Transmitter Clock Frequency,
Transmitter Timing Jitter-Master Jitter, Transmitter Timing Jitter-Slave Jitter, Transmittter
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.
Table 15: Measurement setup and algorithm
Item Requirements
Configuration parameters 1. Record Length
Signal type Test mode 2
72 BroadR-Reach 3.2 (100BASE-T1) Printable Application Help
BroadR-Reach measurements
Item Requirements
Measurement algorithm outputs 1. Clock frequency
2. Number of unit intervals
Measurement algorithm inputs Test mode 2 signal captured in differential form
Limits Lower limit: 66.6603 MHz
Upper limit: 66.6736 MHz
Plots Plot showing only 4 cycles of clock frequency
Measurement algorithm
See also
BroadR-Reach Automated Compliance Solution automatically executes the
calculations described below for the Transmit Clock Frequency measurement.
1. Check if the input waveform pattern is a test mode 2 or not. 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 above table.
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
BroadR-Reach 3.2 (100BASE-T1) Printable Application Help 73
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
BroadR-Reach measurements
Required test equipment
Test setup procedure for
Timing Jitter (Master) test
Test setup (Slave Jitter)
In addition to the DUT and oscilloscope, you will need the following:
■
One supported differential probe.
■
Short RJ45 connector
■
Test Fixture: TF-GBE-BTP
The Timing Jitter (Master) measurement setup involves the DUT, test fixture,
and the oscilloscope.
Connect the equipment as shown in this connection diagram (refer to Figure 40)
and as explained in the following procedure:
1. Set the DUT to generate and transmit a test mode 2 signal.
2. Connect the Ethernet cable to J490 and the test port of the DUT. If the DUT
does not have a RJ45 connector, then strip the RJ45 cable on one side and
solder it to the appropriate pins on the DUT.
3. Connect the differential probe to P9 and the configured channel of the
oscilloscope.
Specifications
Required test equipment
Test setup procedure for
Timing Jitter (Slave) test
■
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:
■
One supported differential probe
■
Short RJ45 connector
■
Test fixture: TF-GBE-BTP
■
Link partner (This is needed to put the DUT to slave mode.)
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. Set the DUT to operate in normal mode.
2. Connect the DUT to the link partner and establish a normal Ethernet
connection.
74 BroadR-Reach 3.2 (100BASE-T1) Printable Application Help
BroadR-Reach measurements
3. Use the appropriate cable or probe to bring the DUT TX_TCLK 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 DUTs TX_TCLK
is exposed and accessible.
Test setup procedure
Figure 40: Connection diagram for Transmitter Clock Frequency, Transmitter Timing JitterMaster Jitter, Transmitter Timing Jitter-Slave Jitter, Transmittter 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.
BroadR-Reach 3.2 (100BASE-T1) Printable Application Help 75
BroadR-Reach measurements
Timing Jitter (Slave) test
Figure 41: Connection diagram for Timing Jitter (Slave) test
76 BroadR-Reach 3.2 (100BASE-T1) Printable Application Help
BroadR-Reach measurements
Measurement setup and
algorithm
Table 16: Measurement setup and algorithm
Item Requirements
Configuration parameters a. Hysteresis
b. Edge Type
Signal type Test mode 2 (master) and TK_TCLK (slave)
Measurement algorithm outputs
MASTER RMS TIE between test mode 2 waveform and unjittered
reference
SLAVE RMS TIE between TX_TCLK waveform and unjittered
reference
Number of edges considered for computation
Measurement algorithm inputs
MASTER Minimum 1 ms duration test mode 2 signal captured in
differential form.
Hysteresis
Edge Type
SLAVE Minimum 1 ms duration TX_TCLK signal captured in
differential form.
Hysteresis
Edge Type
Limits
MASTER Lower limit: NA
Upper limit: 50 ps
SLAVE Lower limit: NA
Upper limit: 150 ps
Plots Time trend of TIE
BroadR-Reach 3.2 (100BASE-T1) Printable Application Help 77
BroadR-Reach measurements
Measurement algorithm
(Master)
Measurement algorithm
(Slave)
BroadR-Reach Automated Compliance Solution automatically executes the
calculations as described below:
1. Edge locations in test mode 2 waveform (captured in differential form) are
determined with middle level percentage as 50%. Hysteresis and EdgeType
are entered by user in GUI.
2. The least square method is used for straight line fit, with Y as the edge
locations and X as the edge indices. Only edges that match the EdgeType
entered by the user in the GUI are considered for fitting. Slope and intercept
are determined as the output of the least square method. Using the intercept
and slope, reconstructed edge locations are determined (un-jittered
reference).
reconstructedTime(I) = intercept + I * slope, I = 0 to num_edges(num_edges
depend on EdgeType)
3. Compute TIE on EdgeType entered by user in GUI.
TIE(I) = reconstructedTime(I) – EdgePosition(I), I = 0 to
num_edges(num_edges depend on EdgeType).
Compute rms value of TIE, which is reported as the result.
BroadR-Reach Automated Compliance Solution automatically executes the
calculations as described below:
1. Edge locations in TX_TCLK waveform (captured in differential form) are
determined with middle level percentage as 50%. Hysteresis and EdgeType
are entered by user in GUI.
2. The least square method is used for straight line fit, with Y as the edge
locations and X as the edge indices. Only edges that match the EdgeType
entered by the user in the GUI are considered for fitting. Slope and intercept
are determined as the output of the least square method. Using the intercept
and slope, reconstructed edge locations are determined (un-jittered
reference).
reconstructedTime(I) = intercept + I * slope, I = 0 to num_edges(num_edges
depend on EdgeType).
3. Compute TIE on EdgeType entered by user in GUI.
TIE(I) = reconstructedTime(I) – EdgePosition(I), I = 0 to
num_edges(num_edges depend on EdgeType).
Compute rms value of TIE, which is reported as the result.
78 BroadR-Reach 3.2 (100BASE-T1) Printable Application Help
BroadR-Reach measurements
See also
Plots
Transmitter Power Spectral Density
This test confirms that the transmitter power spectral density is within
conformance limits.
Test setup for Power
Spectral Density
■
Specification
Required test equipment
BroadR-Reach Physical Layer Transceiver Specification for Automotive
Applications, version 3.2, section 5.4.4 or IEEE P802d3bwTM (100 BASE
T1) section 96.5.4.4 transmitter specifications
■
BroadR-Reach Physical Media Attachment Test Suite version 2.0, section
5.4
In addition to the DUT and oscilloscope, you will need the following:
Test setup procedure for
Power spectral density
test
■
One supported differential probe
■
Short RJ45 connector
■
Test fixture: TF-GBE-BTP
The Power Spectral Density test involves the DUT, test fixture, and the
oscilloscope.
Connect the equipment as shown in this connection diagram and as explained in
the following procedure:
1. Set the DUT to generate and transmit test mode 5 signal.
2. Connect the Ethernet cable to J490 and the test port of the DUT.
If the DUT does not have an RJ45 connector, then strip the RJ45 cable on
one side and solder it to the appropriate pins on the DUT.
3. Connect the differential probe to P9 and the configured channel of the
oscilloscope.
4. Ensure that the "+" point of differential probe should be near |>.
BroadR-Reach 3.2 (100BASE-T1) Printable Application Help 79
BroadR-Reach measurements
Power spectral density
Power spectrum curve
mask information
Figure 42: Connection diagram for 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.
Table 17: Power spectrum curve mask information
Frequency PSD Upper Bound (dBm) PSD Lower Bound (dBm)
at 1 MHz –23.3 –30.9
at 20 MHz –24.8 –35.8
at 40 MHz –28.5 –40.2
57 MHz - 200 MHz –36.5 – NA
Upper and lower limits/masks are piece-wise linear masks connecting points
given in the above table.
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BroadR-Reach measurements
Settings. RBW = 10 KHz, VBW = 30 KHz, sweep time > 1 min, RMS detector,
sweep time 3.275 seconds
Measurement algorithm
BroadR-Reach Automated Compliance Solution automatically executes the
calculations as described below for the power spectral density measurement.
1. The test mode 5 signal feed as input is filtered using a band limiting filter
with cut off frequency of 600 MHz.
2. Spectral functions (SpectralMag) present in the oscilloscope MATH sub
system are used for computing the spectrum of the filtered test mode 5 signal.
3. The output of “SpectralMag” is averaged over “Averages” times. “Averages”
is an acquisition parameter present in the GUI. The default value of this
parameter is 64.
4. ”SpectralMag” is executed with the following configuration settings:
■
Center frequency: 100.5 MHz
■
Frequency span: 201 MHz
■
Window type: Gaussian
■
Vertical axis: scale —> Linear
■
Gating duration: 200 micro seconds
■
Gating duration = Record length * sampling rate
■
Mega samples / 12.5 GS/sec = 200 micro seconds
■
Gating position: 0
■
R = 100 Ohm
5. Averaged SpectralMag is saved and used in postprocessing.
6. In postprocessing, the averaged spectral output is filtered using a moving
average filter (smoothing).
7. Filtered result is X(k). From X(k), we compute the power in dBm as given
below.
BroadR-Reach 3.2 (100BASE-T1) Printable Application Help 81
BroadR-Reach measurements
Power = (V_rms^2)/R
Power in frequency domain = |X(k)|^2/R where k = 0 to N-1 are frequency
bins
Power in dB = 20*log10(|X(k)|) – 10*log10(R)
Power in dBm = Power in dB + 10*log10(1000)
Power in dBm = Power in dB + 10*log10(1000)
20*log10(|X(k)|) – 10*log10(R) + 10*log10(1000)
If R = 100 Ohm,
Power in dBm = 20*log10(|X(k)|) – 20 + 30
Power in dBm = 20*log10(|X(k)|) – (20 - 30)
Power in dBm = 20*log10(|X(k)|) – Offset
Where Offset = (20 – 30)
8. Computed power in dBm is compared with limits given in the specification,
which gives limits only at certain frequencies. Linear interpolation is used to
find values for intermediate frequencies.
See also
Plots
Transmitter Output Droop
This test confirms that the transmitter output level does not decay faster than the
maximum specified rate.
Test setup for Transmitter
Output Droop
Specification
■
■
BroadR-Reach Physical Layer Transceiver Specification for Automotive
Applications, version 3.2, section 5.4.1 or IEEE P802d3bwTM (100 BASE
T1) section 96.5.4.1 transmitter specifications
BroadR-Reach Physical Media Attachment Test Suite version 2.0, section
5.1
82 BroadR-Reach 3.2 (100BASE-T1) Printable Application Help
BroadR-Reach measurements
Required test equipment
Test setup procedure for
Transmitter Output Droop
Measurement setup and
algorithm
In addition to the DUT and oscilloscope, you will need the following:
■
One supported differential probe
■
Short RJ45 connector
■
Test fixture: TF-GBE-BTP
The Transmitter Output Droop measurement setup involves the DUT, test fixture,
and the oscilloscope.
Connect the equipment as shown in this connection diagram and as explained in
the following procedure.
1. Set the DUT to generate and transmit test mode 1 signal.
2. Connect the Ethernet cable to J490 and the test port of the DUT. If the DUT
does not have an RJ45 connector, then strip the RJ45 cable on one side and
solder it to the appropriate pins on the DUT.
3. Connect the differential probe to P9 and the configured channel of the
oscilloscope.
Table 18: Measurement setup and algorithm
Item Requirements
Configuration parameters 1. Averages
Signal type Test mode 1
Measurement algorithm outputs 1. Positive Droop in %
2. Number of positive droops
3. Negative Droop in %
4. Number of negative droops
Measurement algorithm inputs Test mode 1 signal captured in differential form
Limits Lower limit: NA
Upper limit: 45%
BroadR-Reach 3.2 (100BASE-T1) Printable Application Help 83
BroadR-Reach measurements
Transmitter output droop
Measurement algorithm
Figure 43: Connection diagram for Transmitter output droop
BroadR-Reach Automated Compliance Solution executes the calculations
described as below for the transmitter output droop measurement.
1. Check if the input waveform pattern is a square wave test pattern or not.
2. If it is square wave test pattern, then check whether positive and negative
widths are greater than 33 unit intervals (500 nS).
3. On each rising edge, compute the maximum voltage (V
the voltage (V
Vd = (V
p_positive
droop_positive
– V
Positive Droop = (Vd/V
) 500 ns after that maximum voltage index.
droop_positive
p_positive
)
) * 100
4. On each falling edge, compute the minimum voltage (V
compute the voltage (V
droop_negative
) 500 ns after that minimum voltage
p_positive
p_negative
) and compute
) and
index.
Vd = (V
p_negative
Negative Droop = (Vd/V
– V
droop_negative
p_negative
)
) * 100
84 BroadR-Reach 3.2 (100BASE-T1) Printable Application Help
BroadR-Reach measurements
See also
Plots
Transmitter Peak Differential Output
This test confirms that the transmitter peak differential output is within 2.2 V
peak-to-peak limits.
Test setup for Transmitter
Peak Differential Output
■
Specification
Required test equipment
IEEE Draft P802.3bw/ D3.3 (100 BASE T1) section 96.5.6 transmitter
specifications
■
BroadR-Reach Physical Media Attachment Test Suite version 1.0, section
5.8
In addition to the DUT and oscilloscope, you will need the following:
■
One supported differential probe
Test setup procedure for
Transmitter Peak
Differential Output test
■
Short RJ45 connector
■
Test fixture: TF-GBE-BTP
The Transmitter Peak Differential Output test involves the DUT, test fixture, and
the oscilloscope.
Connect the equipment as shown in this connection diagram and as explained in
the following procedure:
1. Set the DUT to generate and transmit test mode 5 signal.
2. Connect the DUT Ethernet cable to J490 port of the TC2 segment of the test
fixture.
If the DUT does not have the RJ45 connector, then strip the RJ45 cable on
one side and solder it to the appropriate pins on the DUT.
3. Connect the differential probe to P9 and the configured channel of the
oscilloscope.
4. Ensure that the "+" point of differential probe should be near |>.
BroadR-Reach 3.2 (100BASE-T1) Printable Application Help 85
BroadR-Reach measurements
Peak Differential Output
Measurement algorithm
Figure 44: Connection diagram for Peak Differential Output
NOTE. Ensure that the "+" on the probe tip aligns with "<" on the text fixture
board. This takes care of the polarity being not reversed.
BroadR-Reach Automated Compliance Solution automatically executes the
calculations as described below for the Transmittter Peak Differential Output
measurement.
1. This measurement uses the test mode 5 signal for Peak Differential Output
measurement.
2. Measurement acquires multiple test signals, which are defined on the
Configuration tab. You can modify the values in the User Define Mode.
86 BroadR-Reach 3.2 (100BASE-T1) Printable Application Help
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3. This test uses the Histogram peak-to-peak measurement to compute the peakto-peak value. The histogram is being built over the defined number of
acquisitions and compute the results.
Transmitter Distortion
Test setup for Transmitter
Distortion
Figure 45: Vertical Histogram for Peak Differential Output
This test confirms that the peak transmitter distortion is less than 15 mV for all
10 UIs within the eye opening.
BroadR-Reach 3.2 (100BASE-T1) Printable Application Help 87
BroadR-Reach measurements
Specification
■
BroadR-Reach Physical Layer Transceiver Specification for Automotive
Applications, version 3.2, section 5.4.2 or IEEE P802d3bwTM (100 BASE
T1) section 96.5.4.2 transmitter specifications
■
BroadR-Reach Physical Media Attachment Test Suite version 2.0, section
5.2
Required test equipment
In addition to the DUT and the oscilloscope, you will need the following:
NOTE. You will need to complete the calibrate procedure before doing the
Transmitter Distortion measurement with disturbing signal. The calibrate
procedure is used to effectively remove the disturbing signal and compensate for
nonlinearity in the disturber and test fixture.
■
One supported differential probe
■
Two BNC cables (for connecting AFG or AWG5K to fixture) or two SMA
cables with two BNC to SMA connectors (for connecting AWG7K to fixture)
■
Short RJ45 connector
■
GPIB cable (required if you use AWG automation, connects AWG and
oscilloscope)
■
Test fixtures: TF-GBE-BTP
■
TF-BRR-CFD (Clock Frequency Divider Unit): This is used to synchronize
oscilloscope and signal source with the DUT Transmit _CLK.
NOTE. If you are using R&S Clock divider fixture, then the output from the
R&S fixture must be terminated with 50 ohms, which goes to oscilloscope as
external REF Clock input.
Connect the equipment as shown in the below connection diagram.
Test setup procedure for
Transmitter Distortion
This measurement is divided into the following two parts. Do them in this order:
1. Calibration
2. Measurement with disturbing signal
Calibration is used to effectively remove the disturbing signal and compensate
for nonlinearity in the disturber and test fixture. Calibration is used only when
measurements are executed with a disturbing signal.
Design of the transmitter to tolerate the presence of the remotely driven signal
with acceptable distortion or other changes in performance is a critical issue and
must be addressed by the implementer. A disturbing signal is used to simulate the
presence of a remote transmitter. The disturbing signal is defined as a sine wave
generator that simulates the potential interfering effect of another transmitter.
BroadR-Reach (100BASE T1) measurements that require test mode 4 have to be
done with a disturbing signal. Characteristics of disturbing signal are given in the
following table.
88 BroadR-Reach 3.2 (100BASE-T1) Printable Application Help
BroadR-Reach measurements
Table 19: Characteristics of disturbing signal
Test mode Waveform Characteristics of the waveform Purity
Amplitude (p-p) Frequency (MHz)
4 Sinusoidal 5.4 V 11.111 All harmonics >
40 dB below
fundamental
Disturber compensation
As part of calibration following compensations are done:
Figure 46: Disturber compensation
Disturbing signal is fed from AWG/AFG. As part of disturbing signal
compensation, do the following:
1. Measure peak amplitude and frequency of disturbing signal.
2. Calibrate/adjust the AWG so that measured amplitude and frequency are as
close as possible to default/expected values as mentioned in the above table.
3. Use the final measured amplitude and frequency values as initial values for
disturbing signal removal.
BroadR-Reach 3.2 (100BASE-T1) Printable Application Help 89
BroadR-Reach measurements
A. Disturbing signal
compensation (AWG/AFG)
Figure 47: Disturbing signal compensation (AWG)
NOTE.
■
Clock Divider Unit is not used during Disturber signal compensation.
Application will setup the reference clock input to internal.
■
Without an amplifier, the AWG7000 series generates a maximum voltage of
2 Volt peak-to-peak signal, which cannot meet the 5.4 Volt requirement for
the disturber signal for Transmitter Distortion test.
■
Ensure that the "+" on the probe tip aligns with "<" on the text fixture board.
This takes care of the polarity being not reversed.
90 BroadR-Reach 3.2 (100BASE-T1) Printable Application Help
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