Getting help and support............................................................................................................................................................. 11
Minimum system requirements.....................................................................................................................................13
Downloading and installing the software.......................................................................................................................14
Activate the license.......................................................................................................................................................14
View software version and license key details..............................................................................................................14
Setting up the test environment.................................................................................................................................................. 16
Setting up tests.................................................................................................................................................................... 16
Connection setup for host tests.................................................................................................................................... 18
Connection setup for module tests............................................................................................................................... 21
Test setup overview............................................................................................................................................................. 22
Search instruments connected to the application................................................................................................................ 22
Before you click start............................................................................................................................................................23
Starting the application................................................................................................................................................................26
Options menu functions....................................................................................................................................................... 28
TekExpress instrument control settings............................................................................................................................... 31
Setup panel: Configure the test setup.........................................................................................................................................32
DUT: Set DUT settings.........................................................................................................................................................34
Test Selection: Select the tests............................................................................................................................................ 36
Acquisitions: Set waveform acquisition settings.................................................................................................................. 37
Configuration: Set measurement limits for tests.................................................................................................................. 39
Preferences: Set the test run preferences........................................................................................................................... 42
Status panel: View the test execution status...............................................................................................................................43
View test execution status....................................................................................................................................................43
View test execution logs.......................................................................................................................................................44
Results panel: View summary of test results...............................................................................................................................45
Filter the test results.............................................................................................................................................................45
View a generated report.......................................................................................................................................................50
Saving and recalling test setup................................................................................................................................................... 51
Save the configured test setup............................................................................................................................................ 51
Load a saved test setup.......................................................................................................................................................52
Perform a test using pre-run session files............................................................................................................................53
Save the test setup with a different name............................................................................................................................57
Run a saved test in prerecorded mode................................................................................................................................57
About SCPI command......................................................................................................................................................... 59
Socket configuration for SCPI commands........................................................................................................................... 59
Set or query the device name of application........................................................................................................................65
Set or query the suite name of the application.....................................................................................................................65
Set or query the test name of the application...................................................................................................................... 66
Set or query the version name of the application.................................................................................................................68
Set or query the general parameter values..........................................................................................................................68
Set or query the acquire parameter values..........................................................................................................................70
Set or query the analyze parameter values......................................................................................................................... 74
Query the available devices in the DUT panel of the application.........................................................................................74
Query the available suites for the selected device...............................................................................................................75
Query the list of available tests of the application................................................................................................................75
Query the available version names of the application......................................................................................................... 76
Query the list of available instruments based on the specified instrument type...................................................................77
Set or query the IP address of the instrument based on the specified instrument type.......................................................77
Query the information of the generated report file............................................................................................................... 77
Query the information of the generated waveform files....................................................................................................... 78
Query the information of the generated image files............................................................................................................. 78
Query the active TekExpress application name................................................................................................................... 79
Set or query the DUTID of application................................................................................................................................. 79
Sets or query the acquire mode status................................................................................................................................ 79
Set or query the execution mode status.............................................................................................................................. 80
Generate the report for the current session......................................................................................................................... 80
Query the value of specified report header field in the report.............................................................................................. 81
Query the value of specified result detail available in report summary/details table............................................................81
Restore the setup to default settings................................................................................................................................... 82
Save the setup..................................................................................................................................................................... 82
Save the settings to a specified session.............................................................................................................................. 82
Open the setup from a specified session.............................................................................................................................83
Query the current setup file name........................................................................................................................................83
Run/stop/pause/resume the selected measurements execution in the application............................................................. 83
Query the current measurement execution status............................................................................................................... 84
Query whether the current setup is saved or not saved...................................................................................................... 84
Exit or close the application................................................................................................................................................. 84
Query the status of the previous command execution.........................................................................................................84
Query the last error occurred............................................................................................................................................... 85
Set or query the popup details............................................................................................................................................. 85
Sets or query the limit values in the limits editor window.....................................................................................................85
Set or query the waveform file recalled for the specified test name and acquire type.........................................................86
Set or query the enable/disable status of Verbose function.................................................................................................86
Query the enable or disable status of Continuous run function........................................................................................... 87
Set or query the enable/disable status of Continuous Run function.................................................................................... 87
Set or query the continuous run duration time value........................................................................................................... 88
Set or query the session create option in the continuous run function................................................................................ 88
Set or query the View report after generating option status.................................................................................................89
Returns the report as XML string......................................................................................................................................... 90
Copies all the images from current run session to the given destination location................................................................90
Selects the specified test(s) and deselect all other tests..................................................................................................... 90
Returns the complete information about the selected test...................................................................................................91
Set the default session.........................................................................................................................................................91
Save the run/config sessions............................................................................................................................................... 91
Load the run/config session................................................................................................................................................. 91
Delete the run/config session...............................................................................................................................................92
Run the run/config saved session........................................................................................................................................92
Query the available list in the run/config session.................................................................................................................92
Query the current run/config session................................................................................................................................... 93
Override the run/config session........................................................................................................................................... 93
Testing procedures and examples....................................................................................................................................... 94
Signal types used by tests............................................................................................................................................ 94
Signal validation procedure.......................................................................................................................................... 95
Single-ended output voltage range...............................................................................................................................96
Output AC Common-Mode voltage (RMS) (Host).........................................................................................................96
Signal Rise/Fall time (20% - 80%)................................................................................................................................ 98
Total jitter (Host)............................................................................................................................................................99
Data dependent jitter (Host)........................................................................................................................................101
Data dependent pulse width shrinkage (Host)............................................................................................................102
Eye mask hit ratio (Host).............................................................................................................................................105
Voltage modulation amplitude (p-p)............................................................................................................................107
Output AC Common-Mode voltage (RMS) (Module).................................................................................................. 112
Total jitter (Module)......................................................................................................................................................113
Data dependent jitter (Module)....................................................................................................................................114
Data dependent pulse width shrinkage (Module)........................................................................................................116
Eye mask hit ratio (Module)........................................................................................................................................ 117
File name extensions......................................................................................................................................................... 121
De-embed using filter files................................................................................................................................................. 122
Map the My TekExpress folder...........................................................................................................................................123
TekExpress is the Tektronix Test Automation Framework, developed to support your current and future test automation needs. TekExpress
uses a highly modular architecture that lets you deploy automated test solutions for various standards in a relatively short time.
Note: The skew between Data+ and Data- in the signal path from the DUT to the oscilloscope will be computed and compensated
before running the measurements.
Key Features
•Allows conformance testing to the latest Compliance Test Specification (CTS)
•Reliable Testing:
•Conformance to SFP+ and QSFP+ interconnect module electrical testing ensures reliable results
•SFP+ QSFP+ Tx is SFP+ and QSFP+ compliance software
•Enables execution of the physical-layer (PHY), electrical tests, and SFP+/QSFP+ based electrical measurements
•Automated testing:
•Minimizes user intervention when conducting time-consuming testing
•Reduces the time required to conduct testing
•Selective testing:
•Performs fully-automated testing for transmitter measurements
•Allows you to select individual tests or test groups in the tree-structure
•Avoids repeated testing through accurate and reliable results from a single run
•Quick testing:
•One-button selection of multiple tests ensures faster testing
•Test margins and statistical information aid analysis to find answers quickly
•Wide range of tests for SFP+/QSFP+ Host devices and SFP+/QSFP+ Module devices enables complete validation
•Complete compliance solution with an elaborate test fixture and signal sources support for SMA cable-based solution provides
cost-effective way to perform compliance testing
•User defined mode supports PRBS7, PRBS11, PRBS15, PRBS20 and PRBS23 in addition to patterns supported in Compliance
mode including PRBS9, PRBS31 and 8180
•Customize the setup:
•Modify the test setup according to the DUT configuration.
•Run test measurements with different record lengths.
•Run test measurements with more than one signal.
•Detailed test reporting:
•Provides a Pass/Fail summary table
•Provides margin details on each test
•Provides a consolidated report for all tests
•Provides additional information such as skew and signal type selected for each measurement
Use the product documents for more information on the application functions, understand the theory of operation, how to remotely program
or operate the application, and do other tasks.
Table 1: TekExpress Application documents
To learn aboutUse this document
How to use the application
How to remotely control the instrument
Conventions
This application help uses the following conventions:
TekExpress SFP+ QSFP+ Help
PDF version of this document can be downloaded from www.tek.com/downloads
Compiled HTML (CHM) version is integrated with the application. Press F1 key from the
keyboard to start the help.
Tektronix Part Number: 077-xxxx-xx
•The term "Application," and "Software" refers to the TekExpress SFP+ QSFP+ application.
•The term “DUT” is an abbreviation for Device Under Test.
•The term “select” is a generic term that applies to the two methods of choosing a screen item (button control, list item): using a mouse
or using the touch screen.
•A Note identifies important information.
Table 2: Icons used in the help
IconDescription
This icon identifies important information
This icon identifies conditions or practices that could result in loss of data.
This icon identifies additional information that will help you use the application more
efficiently.
Tektronix values your feedback on our products. To help us serve you better, please send us your suggestions, ideas, or comments on
your application or oscilloscope. Contact Tektronix through mail, telephone, or the Web site. See Contacting Tektronix at the front of this
document for contact information.
When you contact Tektronix Technical Support, please include the following information (be as specific as possible):
General information
•All instrument model numbers
•Hardware options, if any
•Modules used
•Your name, company, mailing address, phone number, FAX number
•Please indicate if you would like to be contacted by Tektronix about your suggestion or comments.
Application specific information
•Software version number
•Description of the problem such that technical support can duplicate the problem
•If possible, save the setup files for all the instruments used and the application
•If possible, save the TekExpress setup files, log.xml, *.TekX (session files and folders), and status messages text file
The following table describes the minimum system requirements for the TekExpress SFP+ QSFP+ application.
Table 3: Minimum system requirements
InstrumentsDescription
ProcessorSame as the oscilloscope
Operating SystemSame as the oscilloscope (Windows 7, 64-bit only)
MemorySame as the oscilloscope
Hard DiskSame as the oscilloscope
Display
Firmware
Same as the oscilloscope
TekScope 10.3.3 for non-SX series digital oscilloscopes
TekScope 10.3.0 for SX series digital oscilloscopes
1
Getting started
Software
•DPOJET, Jitter and Eye Diagram Analysis Tool, version 10.0.0.35 or later (64-bit)
•MathWorks MATLAB Runtime 8.0 2 (Windows 7)
•IronPython 2.7.3
•PyVisa 1.0.0.25
•Microsoft .NET 4.0 Framework
•Microsoft Internet Explorer 6.0 SP1 or later
•Microsoft Photo Editor 3.0 or equivalent software for viewing image files
•Adobe Reader 7.0 or equivalent software for viewing portable document format (PDF) files
Other Devices
•Microsoft compatible mouse or compatible pointing device
•Four USB ports (two USB ports minimum)
•PCI-GPIB or equivalent interface for instrument connectivity
Supported instruments
The TekExpress SFP+ QSFP+ Tx application runs on the following Tektronix oscilloscopes:
•DPO/DSA/MSO71604C and DPO/DSA/MSO72004C Series Digital Oscilloscopes
•DPO/DSA72504D and DPO/DSA73304D Series Digital Oscilloscopes
•DPO/MSO72304DX, DPO/MSO72504DX, and DPO/MSO73304DX Series Digital Oscilloscopes
•DPO70000SX Series Digital Oscilloscopes
3
1
If TekExpress is running on an instrument having a video resolution lower than 800x600 (for example, a sampling oscilloscope), it is recommended that you connect
a secondary monitor, which must be enabled before launching the application.
2
MatLab Runtime Compiler is required for performing the Host Output TWDPc test. This test is purchase option SFP-WDP.
3
If TekExpress is installed on a Tektronix oscilloscope, TekExpress will use the virtual GPIB port for communicating with oscilloscope applications. If external GPIB
communication devices such as USB-GPIB-HS or equivalent are used for instrument connectivity, make sure that the Talker Listener utility is enabled in the GPIB
menu of the DPO/DSA oscilloscope. For ease of use, connect to an external (secondary) monitor.
Complete the following steps to download and install the latest TekExpress SFP+ QSFP+ application.
1. Go to www.tek.com.
2. Click Downloads. In the Downloads menu, select DOWNLOAD TYPE as Software and enter the application name in the MODEL ORKEYWORD field and click SEARCH.
3. Select the latest version of software and follow the instructions to download the software. Copy the executable file into the
oscilloscope.
4. Double-click the executable and follow the on-screen instructions.
The software is installed at C:\Program Files\Tektronix\TekExpress\TekExpress SFP+ QSFP+.
5. Select Application > TekExpress SFP+ QSFP+ from the Oscilloscope menu, to open the application.
Activate the license
Activate the license using the Option Installation wizard in the TekScope application:
1. In the TekScope application menu bar, click Utilities > Option Installation. The TekScope Option Installation wizard opens.
2. Push the F1 key on the oscilloscope keyboard to open the Option Installation help topic.
3. Follow the directions in the help topic to activate the license.
View software version and license key details
To view version information of the application, click Options > About TekExpress.
Set up tests using the tabs in the Setup panel. Settings in the DUT tab use a top-down, left-to-right logic flow, so that any parameter that
affects or acts as a filter for other parameters appears either above or to the left of the affected parameters.
Test options: standards, views, and modes
Test options include two standards, QSFP+ Tx and SFP+ Tx (selected in the DUT tab of the Setup panel), two views, Compliance and
Advanced (selected in the DUT tab of the Setup panel), and two modes, Compliance and User Defined (selected in the configuration
settings of the Setup panel).
The selected standard determines which measurement standard will be used. The selected view determines where the test configuration
settings are displayed. The selected mode determines whether you can change test configuration settings to include those that are
noncompliant.
•Compliance View selected with Compliance Mode
View configuration options in the Test Selection tab of the Setup panel. 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. The only test configuration
parameters that you can change in this mode are the Global Settings.
•Compliance View selected with User-Defined Mode
View configuration options in the Test Selection tab of the Setup panel. Tests will run automatically but you will be able to change the
parameters before starting the tests.
•Advanced View selected with Compliance Mode
View configuration options in the Configuration tab of the Setup panel. 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. The only configuration parameters
that you can change in this mode are the Global Settings.
•Advanced View selected with User-Defined Mode
View configuration options in the Configuration tab of the Setup panel. Tests will run automatically but you will be able to change test
parameters before starting the tests.
Supported tests
The application supports the following tests, grouped by profile.
Host Profile Tests
•SFF-8431 Table 11 Output Electrical Specifications at B:
•Single Ended Output Voltage Range
•Output AC Common Mode voltage (RMS)
•SFF-8431 Table 12 Jitter and Eye Mask Specifications at B:
•SFF-8431 Table 33 Output Specifications at B for Cu:
Note: The group SFF-8431 Table 33 Output Specifications at B for Cu is associated with the 10GSFP+ Cu Direct Attach
Cable device profile (the check box for this profile is located on the DUT tab of the Setup panel). This group of tests is
available only when this check box is selected.
•Voltage Modulation Amplitude (p-p)
•Transmitter Qsq (for Cu)
•Output AC Common Mode voltage (RMS) (for Cu)
•Host Output TWDPc
Note: An evaluation version of the Host Output TWDPc test is included in the SFP+ QSFP+ Tx installation. You are
allowed 10 free trials of this test. Each time you run the test, regardless of how often you open the application, one of the
free trials is used. To use this test after the evaluation period, purchase the SFP-WDP option license key.
Module Profile Tests
•SFF-8431 Table 16 Transmitter Input Electrical Specifications at B:
•AC Common-Mode Voltage Tolerance
•Single-Ended Input Voltage Tolerance
•SFF-8431 Table 17 Transmitter Input Tolerance Signal Calibrated at B:
Setting up the test environment
•Crosstalk Source Rise/Fall Time (20%-80%)
•Crosstalk Source Amplitude (p-p Differential)
•Output AC Common-Mode Voltage (RMS)
•Total Jitter
•Data Dependent Jitter
•Data Dependent Pulse Width Shrinkage
•Uncorrelated Jitter
•Eye Mask Hit Ratio
•Additional Supported Measurements for QSFP+ only
•Total Jitter @ J2
•Total Jitter @ J9
Instrument connection setup
To run tests, you need the following instrument (for details, see Minimum System Requirements):
TF-QSFP-TPA-PRQSFP+ Host Compliance Board Plug and Module Compliance Board Receptacle
TF-DC-BLOCK-KITDC Block Kit
Equipment connections can vary by Device Profile (Host and Module) and by individual test. Refer to the following connection diagrams
when setting up equipment for testing.
A test setup includes configuration parameters and report options. Use the options in the Setup panel and Reports panel to select and
configure tests.
1. Select the DUT parameters
2. Select one or more tests
3. Select acquisitions
4. Configure test parameters
5. Select test notification preferences
6. Select report options
Search instruments connected to the application
Use the TekExpress Instrument Control Settings dialog box to search the instruments (resources) connected to the application. The
application uses TekVISA to discover the connected instruments.
The instruments required for the test setup must be connected and detected by the application, before running the test.
Note:
To refresh the list of connected instruments:
1. Select Options > Instrument Control Settings.
2. In the Search Criteria section of the Instrument Control Settings dialog box, select the connection types of the instruments to
search. Instrument search is based on the VISA layer, but different connections determine the resource type, such as LAN, GPIB, and
USB. For example, if you choose LAN, the search will include all the instruments supported by the TekExpress that are communicating
over the LAN.
3. Click Refresh. The TekExpress application searches for the connected instruments.
4. When the search is complete, a dialog box lists the instrument-related details based on the search criteria. For example, for the Search
Criteria as GPIB, the application displays all the GPIB instruments connected to the application.
TekExpress Instrument Control Settings window.
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.
Running tests
After selecting and configuring tests, review the pre-run checklist and then click Start to perform the tests. The application acquires and
analyzes the data, then displays a report when the tests are finished.
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 by using the Alt+Tab key combination. To keep the TekExpress SFP+ QSFP+
Tx application on top, select Keep On Top from the SFP+ QSFP+ Tx Options menu.
Before you click start
Before you run tests for the first time, do the following:
1. Understand where your test files are stored on the instrument.
After you install and launch TekExpress SFP+ QSFP+ Tx, it creates the following folders on the oscilloscope:
Every time you launch TekExpress SFP+ QSFP+ Tx, an Untitled Session folder is created in the SFP-Tx folder. The
Untitled Session folder is automatically deleted when you exit the SFP+ QSFP+ Tx application. To preserve your test
session files, save the test setup before exiting the TekExpress 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 associated files, is created on the oscilloscope X: drive.
2. Map the shared My TekExpress folder as X: (X drive) on the instruments used in test setups running Microsoft Windows Operating
The My TekExpress folder has the share name format <domain><user ID>My TekExpress. Or, if the instrument is not
connected to a domain, the share name format is <instrument name><user ID>My TekExpress. This shared folder
is used to save the waveform files and is used during other file transfer operations.
Note: If the X: drive is mapped to any other shared folder, the application will display a warning message asking you to
disconnect the X: drive manually.
3. Make sure that the My TekExpress folder has read and write access, and that the contents are not set to be encrypted:
a. Right-click the folder and select Properties.
b. Select the General tab and then click Advanced.
c. In the Advanced Attributes dialog box, make sure that the option Encrypt contents to secure data is NOT selected. Example.
4. See the pre-run checklist before you run a test.
Pre-run checklist
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, refer to the information in
Before you click start.
1. Make sure that all the required instruments are properly warmed up (approximately 20 minutes).
2. Perform Signal Path Compensation (SPC).
a. On the oscilloscope main menu, select the Utilities menu.
b. Select Instrument Calibration.
3. Deskew channels.
4. Verify that the application is able to find the DUT. If it cannot, perform a search for connected instruments.
a. In SFP+ QSFP+ Tx, select the Setup panel and then click the Test Selection tab.
b. Select any test and then click Configure.
c. In the Configuration section, click Global Settings.
To start the TekExpress SFP+ QSFP+, select from the oscilloscope menu bar Applications > TekExpress SFP+ QSFP+.
During start, a "My TekExpress" folder is created in the Documents folder of the current user and gets mapped to "X" drive. When the
application is closed properly, the "X" drive gets unmapped. Session files are then stored inside the X:\SFP+ QSFP+ folder. If this
file is not found, the application runs an instrument discovery program to detect connected instruments before starting TekExpress SFP+
QSFP+.
To keep the TekExpress SFP+ QSFP+ application on top of any application, select Keep On Top from the options menu. If the application
goes behind the oscilloscope application, select Applications >TekExpress SFP+ QSFP+ to bring the application to the front.
This section describes the application controls with functionality and its details.
Table 5: Application control description
ItemDescription
Options menuMenu to display global application controls.
Test panelControls that open tabs for configuring test settings and options.
Starting the application
Start / Stop buttonUse the Start button to start the test run of the measurements in the selected order. If prior
acquired measurements are not cleared, then new measurements are added to the existing
set. The button toggles to the Stop mode while tests are running. Use the Stop button to
abort the test.
Pause / Continue buttonUse the Pause button to pause the acquisition. When a test is paused, this button changes
as Continue.
Clear buttonUse the Clear button to clear all existing measurement results. 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. This button is available only on Results panel.
Note: This button is visible only when there are results data on the panel.
Application window move iconPlace the cursor over the top of the application window to move the application window to
Mini view / Normal viewMini 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.
Options menu functions
To access the Options menu, click in the upper-right corner of the application. It has the following selections:
Table 6: Options menu settings
MenuFunction
Default Test SetupOpens a new test setup with default configurations.
Open Test SetupOpens a previously saved test setup. Displays the list of previously saved test setup file
names. Make the selection and click OK to open the test setup.
Save Test SetupSaves the current test configurations with the specified file name.
Save Test Setup AsSaves the current test setup with a different file name or file type.
Open RecentDisplays the recently opened test setup file names. Make the selection and click OK to
open the test setup.
Instrument Control Settings
Keep On Top
Email SettingsConfigures email options for test run and result notifications.
DeskewLoads oscilloscope channel deskew settings into the application.
HelpDisplays the TekExpress SFP+ QSFP+ help.
Table continued…
Detects, lists, and refreshes the connected instruments found on the specified connections
(LAN, GPIB, USB, Serial, Non-VISA Resources, TekLink, and VXI).
Always keeps the TekExpress SFP+ QSFP+ application on top of all the applications.
Use the Email Settings utility to get notified by email when a measurement completes or produces any error condition. Follow the steps to
configure email settings:
Figure 1: Email settings window
1.Select Options > Email Settings to open the Email Settings dialog box.
2.(Required) For Recipient email Address(es), enter one or more recipient email addresses. To include multiple addresses, 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, then the @ symbol, and the email server ID. For example:
user@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.
If any of the above required fields are left blank, the settings will not be saved, and email notifications will not be sent.
Note:
5.In the Email Attachments section, select from the following options:
•Reports: Select to receive the test report with the notification email.
•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.
6.In the Email Configuration section:
•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.
•Enter the number in the Number of Attempts to Send field, to limit the number of attempts that the system makes to send a
notification. The default is 1. You can also specify a timeout period.
7.Select the Email Test Results When complete or on error check box. Use this check box to quickly enable or disable email
notifications.