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 to www.tek.com find contacts in your area.
Table of Contents
Table of Contents
List of Figures..............................................................................................................................................................................12
List of Tables............................................................................................................................................................................... 15
Getting help and support.............................................................................................................................................................18
Related documentation........................................................................................................................................................ 18
Required equipment and accessories..................................................................................................................................20
Installing the software.......................................................................................................................................................... 21
Launch the application......................................................................................................................................................... 22
Close the application............................................................................................................................................................22
Help panel.....................................................................................................................................................................36
Figure 34: TP2 Calibration: IL for DMI/CMI.................................................................................................................................54
Figure 45: Rx LEQ Test: Link Training Configuration (Link Training-External)............................................................................64
Figure 46: Rx LEQ Test: Link Training Configuration (Link Training-CBB Controller).................................................................64
Figure 47: Rx LEQ Test: Link Training Configuration (Forced Loopback)...................................................................................65
Figure 50: Rx LEQ Test: Run Test (Basic).................................................................................................................................. 69
Figure 51: Rx LEQ Test: Run Test (Advanced Debug)).............................................................................................................. 70
Figure 52: Rx LEQ Test: Link Training........................................................................................................................................ 73
Figure 53: Rx LEQ Test: Save Results........................................................................................................................................74
Figure 57: Tx LEQ Test: Link Training Configuration (External)..................................................................................................77
Figure 58: Tx LEQ Test: Link Training Configuration (CBB Controller).......................................................................................77
Figure 59: Tx LEQ Test: Tx LEQ Test Configuration................................................................................................................... 79
Figure 60: Tx LEQ Test: Run Test(System Response Time Test)...............................................................................................80
Figure 62: Tx LEQ Test: Run Test(AIC Response Time Test).....................................................................................................81
Figure 63: Tx LEQ Test: Link Training.........................................................................................................................................82
Figure 64: Tx LEQ Test: Save Results........................................................................................................................................ 83
Figure 69: JTOL Test: Link Training Configuration (Link Training-External)................................................................................87
Figure 70: JTOL Test: Link Training Configuration (Link Training-CBB Controller).....................................................................88
Figure 71: JTOL Test: Link Training Configuration (Forced Loopback).......................................................................................89
Figure 72: JTOL Test: Configure Test (Basic)............................................................................................................................. 91
Figure 73: JTOL Test: Configure Test (SKP Ordered Set).......................................................................................................... 91
Table 27: TP2 Calibration: IL for DMI/CMI.................................................................................................................................. 54
Table 35: Rx LEQ Test: Link Training Configuration for Link Training.........................................................................................65
Table 36: Rx LEQ Test: Link Training Configuration for Forced Loopback..................................................................................66
Table 37: Rx LEQ Test: Rx LEQ Test Configuration (Basic)........................................................................................................68
Table 39: Rx LEQ Test: Run Test (Basic).................................................................................................................................... 70
Table 40: Rx LEQ Test: Run Test (Advanced Debug)................................................................................................................. 71
Table 41: Rx LEQ Test: Link Training..........................................................................................................................................73
Table 42: Rx LEQ Test: Save Results......................................................................................................................................... 74
Table 44: Tx LEQ Test: Link Training Configuration....................................................................................................................78
Table 45: Tx LEQ Test: Tx LEQ Test Configuration.....................................................................................................................79
Table 46: Tx LEQ Test: Run Test.................................................................................................................................................82
Table 47: Tx LEQ Test: Save Results..........................................................................................................................................83
Table 49: JTOL Test: Link Training Configuration for Link Training ............................................................................................89
Table 50: JTOL Test: Link Training Configuration for Forced Loopback..................................................................................... 90
Table 51: JTOL Test: Configure Test (Basic)...............................................................................................................................92
Table 52: JTOL Test: Configure Test (SKP Order Set)................................................................................................................92
Table 56: JTOL Test (Results Table)........................................................................................................................................... 97
Table 57: JTOL Test: Link Training..............................................................................................................................................98
Table 58: JTOL Test: Save Results............................................................................................................................................. 99
16
Welcome
Welcome
Welcome to the PCIe5.0 (CEM) TekRxTest application. This application performs the test as per the Gen 5 PHY Test Specification Revision
5.0 Version 1.0 and Base Specification Revision 6.0.1 Version 1.0.
Figure 1: TekRxTest - PCIe5.0 CEM application
Receiver testing is accomplished by connecting the output of BERT PPG (which can produce specific PCIe test patterns) to the input of the
DUT through a specialized set of fixtures and cables. The BERT can be programmed to add different amounts of random jitter, sinusoidal
jitter, differential, Common mode interference along with variable signal amplitude, preshoot, and de-emphasis. Output of the DUT is
connected to the BERT error detector to identify bit errors on the DUT Tx traffic, either during loopback or during sweep of one of the
stress parameters. Any error detected can be assumed to be generated from the DUT Tx path as a result of either the DUT experiencing
a bad bit-decision at its receiver or uncompensated back channel loss at the error detector of the BERT. Additionally, DUT Tx traffic can be
analyzed to verify the DUT responses to various requests put forward by the BERT during link training process.
Key features and benefits
•Automated Calibration, Link Training, and Compliance Testing.
•Receiver JTOL test for AIC / System DUT.
•Jointly with Anritsu BERT MP1900A series, the receiver solution provides the tools and flexibility required to visualize and control the
impairments, observe real-time eye performance for PCIe Gen5 devices.
•Reliable and accurate results reduce the test execution time and minimize the skill-set required to perform calibration and testing.
PCIe5.0 (CEM) Receiver Test Application Help 17
Getting help and support
Getting help and support
Related documentation
The following documentation is available as part of the PCIe5.0 (CEM) test application.
Table 1: Product documentation
ItemPurposeLocation
Application HelpApplication operation and User Interface
details
See also
Technical support on page 18
Technical support
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 Real Time Oscilloscope. Contact Tektronix through mail, telephone, or the Web site. See Contacting Tektronix on page
0 at the front of this document for contact information.
Help panel of the application
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, and 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
Conventions
Help uses the following conventions:
•The term "Application", "Software", and "PCIe5.0 CEM" refers to the TekRxTest - PCIe5.0 CEM 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.
18
Table 2: Icon descriptions
IconMeaning
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.
Required2Connector savers (1.85 mm)1.85 mm oscilloscope channel input
accessory
Anritsu MP1900A
Anritsu
3rd party
Required1Bit Error Rate Tester (BERT)
1
equipment
DJATektronixEquipment
Required1DPOJET advanced optionDPOJET advanced Jitter, Eye and
SW option
SDLA64TektronixEquipment
SW option
PMCABLE1MTektronixTek
accessory
Required1Serial Data Link Analysis
(SDLA) software
Required2Cable pair; 2.92-to-2.92
mm, straight, 1.5 ps phasematched, 40 GHz
174-6663-01TektronixTek
accessory
Required1Cable pair; 2.92-to-2.92
mm, straight, 1.5 ps phasematched, 500 mm, 40 GHz
174-6666-01TektronixTek
accessory
Required2Cable pair; SMA-to-SMA,
Right Angle-Right Angle, 500
mm
174-6659-01TektronixTek
accessory
MPR40MFairview
rd
3
party
Required1Cable pair; SMA - SMP cable
pair
Required2Power dividerSplit signal from DUT Tx to the
Microwave
C7035CentricRF
3rd party
Optional4Right Angle Male-Female 2.92
mm adapter
C7049CentricRF
3rd party
Required32.92 mm Male to 2.92 mm
Male adaptor
Redriver
3rd party3rd party
PowerUSB - Basic PowerUSB
TF-PCIE5-CEMX16
Tektronix
or PCI-SIG
equipment
rd
3
party
Test fixturesRequired1
Optional1Active Gen5 Redriver (back
channel equalization)
Optional1Power USB Power StripAutomate DUT power cycle
Gen 5 CEM Test fixtures
Table continued…
2
50 G or better
connection
Configuration provided by 3rd party
Timing Analysis SW option
Embedding/De-embedding/sparameter filter generation/Receiver
Virtualization and Analysis Software
Equipment connection to fixtures and
DUT
Signal connection between
oscilloscope and BERT for Tx LEQ
Signal connection between
oscilloscope and BERT for Tx LEQ
and Trigger
Refclk connection between DUT and
BERT
oscilloscope and Error Detector
Cable management
Power divider output to oscilloscope
input
High loss back channels (DUT Tx to
Error Detector) may need EQ
3
Tektronix fixtures are not officially
approved by PCI-SIG
1
Configuration for BERT provided by 3rd party vendor
2
Another matched pair of cables (e.g. 174-6663-xx) will be required if the Active redriver is used for Rx or Tx LEQ
3
Gen5 CEM Test Fixtures are not backwards compatible for Gen3 & Gen4 CEM Rx
20
Getting started
ItemVendorTypeR/OQty DescriptionNotes
RXSW-NLP-PCIE5 TektronixSW optionRequired1PCIe Gen5 Receiver software Gen5 BASE and CEM Rx test
software - Node-Locked, Perpetual
RXSW-NL1-PCIE5Gen5 BASE and CEM Rx test
software - Node Locked, Time
Based, 1 year
RXSW-FLP-PCIE5Gen5 BASE and CEM Rx test
software - Floating, Perpetual
RXSW-FL1-PCIE5Gen5 BASE and CEM Rx test
software - Floating, Time Based, 1
year
Installing the software
Complete the following steps to download and install the latest PCIe5.0 (CEM) TekRx test application.
1. Go to www.tek.com.
2. Click Downloads. In the Download menu, select DOWNLOAD TYPE as Software and enter PCIe5.0 (CEM) in the MODEL ORKEYWORD field and click SEARCH.
3. Select the latest version of the software and follow the instructions to download.
4. Copy the executable file into the instrument you wish to install the software (Real-time oscilloscope or PC).
5. Follow the installation instruction that is available in the website. The software is installed at C:\Program
Files\Tektronix\BERTScope\RxTest60
6. Double click the shortcut icon on the desktop to launch the application.
Note:
•The PCIe5.0 (CEM) TekRx test application can be installed on a Tektronix real-time oscilloscope or a PC (optional).
•You must install the TekRxService and SigTest application in the real-time oscilloscope to successfully connect the application
with the real-time oscilloscope.
PCIe5.0 (CEM) Receiver Test Application Help 21
Operating basics
Operating basics
Launch the application
To launch the PCIe5.0 (CEM) test application, double click the shortcut icon TekRxTest on the desktop and select PCIe5.0 (CEM) in the
application window.
Figure 2: TekRxTest application window
Close the application
To exit the application, click on the application title bar. Follow on-screen instructions to save the unsaved session or test setup.
Using other methods to exit the application may result in abnormal termination of the application.
Note:
Launch Real-Time Oscilloscope
The TekVISA Socket Server application on the oscilloscope provides the necessary connectivity between the TekRxTest application
and scope. Although it is launched in the background when the scope boots up and the socket is initialized for communication, it is
recommended to verify the status by clicking on the Desktop Tray ―› TekVISA LAN Server Control as shown in the image below. If it is
ready to exchange data, then a wizard would appear as in the below image.
22
Figure 3: Launch Real-Time Oscilloscope
Note: In the unlikely event when the socket is not initialized, the process can be started by clicking on “Start Socket Server” which
gets enabled during such a scenario.
Operating basics
Launch TekRxService
The PCIe5.0 (CEM) TekRxTest application interfaces with the oscilloscope for data acquisition, analysis and data retrieval utilizing
TekRxService application. This software module should be launched at the time of initiating the TekRxTest application.
PCIe5.0 (CEM) Receiver Test Application Help 23
Operating basics
Figure 4: TekRxService application window
TekRxService has to be launched if the application is being run on an external PC. To launch the application, double click
Note:
the TekRxService batch file shortcut icon in the desktop of the real-time oscilloscope.
Application panels
Application panels overview
The PCIe5.0 (CEM) TekRxTest application uses panels to group the configurations and settings. Click on any panel to configure the
associated settings. A panel may have one or more tabs that lists the selections available in that panel. Controls in a tab may change
depending on the settings made in the same tab or another tab.
Table 3: Application panels overview
ParameterDescription
Connections
Settings
Help
This panel displays the real-time oscilloscope and BERT connection settings. You can
connect to a real-time oscilloscope and BERT by entering the IP address of the
instruments.
This panel allows configuring various settings for the Components, TP3 and TP2
Calibration.
This panel displays the application help.
Table continued…
24
ParameterDescription
Calibrations
This panel allows you to configure the calibration parameters for TP3/TP2 and save the
results.
Operating basics
Tests
Options
This panel allows you to configure the Rx/Tx LEQ test settings and view the results.
This panel allows you to configure the JTOL test settings and view the results.
Connections panel
The connections panel allows you to connect to a real-time oscilloscope and BERT with the PCIe5.0 (CEM) TekRxTest application. Enter
the IP address of the instruments and click Connect to establish the connection.
Figure 5: Connections panel
Table 4: Connections panel
ConnectionsDescription
BERT
RT Scope
PCIe5.0 (CEM) Receiver Test Application Help 25
Enter the BERT IP address in the address field and click Connect. When the BERT is connected
successfully, the circle next to BERT in the right end corner turns green.
Enter the RT Scope IP address in the address field and click Connect. When the RT Scope is connected
successfully, the circle next to RT Scope and TekRxService in the right end corner turns green.
Note: Before you click Connect, if the TekRxTest application is running on an external PC, make
sure to launch the TekRxService in the real-time oscilloscope.
Operating basics
Settings panel
This panel allows you to configure the settings for instruments, calibrations, and remote access. Click any tab to configure the associated
settings.
Figure 6: Settings panel
Table 5: Settings panel configurations
ItemDescription
Restore Defaults
Save
Recall
Restores the application with default settings.
Saves the current test setup.
Recalls the saved test setup.
Components settings
The components settings display the parameters for RT Scope and TekRxService.
26
Operating basics
Figure 7: Components: RT Scope
Table 6: Components: RT Scope
ParameterDescription
Positive Channel
Negative Channel
Sample Rate
Select the generator data positive channel from BERT.
Select the generator data negative channel from BERT.
Displays the RT Scope sample rate in GS/s.
PCIe5.0 (CEM) Receiver Test Application Help 27
Operating basics
Figure 8: Components: TekRxService
Table 7: Components: TekRxService
ParameterDescription
Analysis Time Out
Sigtest Version
Seasim VersionDisplays the Seasim version.
Enter the timeout value for Sigtest analysis.
Enter the Sigtest version.
TP3 Calibration
The TP3 calibration tab allows you to configure the channel settings including the attenuators and component de-embedding, multi-tone
calibration, and insertion loss calculation.
28
Operating basics
Figure 9: TP3 Calibration: Attenuator Settings
Table 8: TP3 Calibration: Attenuator Settings
ParameterDescription
Include Ch1 De-Embedding filter fileEnable to apply Ch1 de-embedding filter file.
Ch1 De-Embedding filter fileClick to browse and navigate to the path and select the required Ch1 de-embedding filter
file.
Ch1 External AttenuationEnter the Ch1 external attenuation value in dB.
Include Ch2 De-Embedding filter fileEnable to apply Ch2 de-embedding filter file.
Ch2 De-Embedding filter fileClick to browse and navigate to the path and select the required Ch2 de-embedding filter
file.
Ch2 External AttenuationEnter the Ch2 external attenuation vaue in dB.
PCIe5.0 (CEM) Receiver Test Application Help 29
Operating basics
Figure 10: TP3 Calibration: Calibrations
Table 9: TP3 Calibration: Calibrations
ParameterDescription
AmplitudeDisplays the calibration target for generator amplitude source.
RJDisplays the calibration target for random jitter source.
SJ @ 100 MHzDisplays the calibration target for sinusoidal jitter source @ 100 MHz.
Multi-tone Calibration
Frequency Settings: Frequencies at which the SJ calibration needs to be performed for JTOL Test.
Frequency (MHz)
Lower Amplitude Limit (UI p-p)Displays the table of lower amplitude limit values at which SJ calibration starts for that
Higher Amplitude Limit (UI p-p)Displays the table of higher amplitude limit values at which SJ calibration ends for that
Min FrequencyEnter the minimum frequency value.
Max FrequencyEnter the maximum frequency value.
# FrequenciesEnter the desired number of frequencies within the specified range.
# PointsEnter the desired number of points used for calibration.
GenerateClick to view the table populated with the frequencies.
Table continued…
Select to enable the multi-tone calibration. It displays the calibration settings for multiple
tones.
Displays the table of frequencies in MHz for which Multi-tone calibration is to be performed.
frequency.
frequency.
30
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