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TekExpress 400G-TXE Electrical Compliance Solution for Real Time Oscilloscope Application Help

Application Help for DPO-DPS-MSO70000 SX and DX Series Oscilloscopes

This document provides the operation instructions for the TekExpress 400G-TXE Electrical Compliance Solution Software Application, for DPO/DPS/MSO70000 SX and DX Series Oscilloscopes.


此手册适用于:

DPO77002SX, DPS77004SX, DPO75902SX, DPS75904SX, DPO75002SX, DPS75004SX, DPO73304SX, DPS73308SX, DPO73304DX, MSO73304DX

  • 手册类型: 联机帮助
  • 部件号: 077136605
  • 发布日期:

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TekExpress 400G-TXE Electrical Compliance Solution for Real Time Oscilloscope Application Help
SCPI COMMANDS

Welcome

Welcome to Tektronix Real Time Oscilloscope based 400G-TXE electrical compliance test solution. The 400G-TXE is an application running on the Tektronix automation platform. The 400G-TXE evaluates the electrical PAM4 signals to the specification-mandated limits. The 400G-TXE electrical compliance test solution provides turnkey compliance testing and debug of the TX electrical properties, key to OIF (CEI-VSR/CEI-MR/CEI-LR) and IEEE (AUI/CR4/KR4) PAM4 standards. It tests the OIF-PAM4 and IEEE-PAM4 electrical standards in a simple, cost effective manner. The 400G-TXE solution offers comprehensive test automation, results margining, data logging, and results reporting in an advanced testing framework.

Key Features
  • The Tektronix TekExpress 400G-TXE provides an automated test solution for following specifications:
    • OIF-PAM4 Specifications:
      • CEI-VSR: 56G
        • Host output - TP1a (Section 16.3.2, Table: 16-1)
        • Module output - TP4 (Section 16.3.3, Table: 16-4)
        • TP0a (Section 16.B.1.1, Table: 16-10)
      • CEI-VSR: 112G
        • Host output - TP1a (Section 23.3.2, Table 23-1)
        • Module output - TP4 (Section 23.3.3, Table 23-4)
        • TP0a (Section 23.B.1.1, Table 23-9)
      • CEI-MR: Section 17.31, Tables 17-2 and 17-3
      • CEI-LR: Section 21.3.1, Tables 21-2 and 21-3
    • IEEE-PAM4 50G-1, 100G-2, 200G-4, and 400G-8 Specifications:
      • AUI TP0a: IEEE802.3bs Annex 120D.3.1
      • AUI TP1a: IEEE802.3bs Annex 120E.3.1
      • AUI TP4: IEEE802.3bs Annex 120E.3.2
      • CR TP2: IEEE802.3cd Section 136.9.3
      • KR TP0a: IEEE802.3cd Section 137.9.2
    • IEEE-802.3ck Transmitter Electrical Specifications (100G-1, 200G-2, and 400G-4):
      • AUI C2C TP0v: IEEE802.3ck, Annex 120F.3.1, Table 120F-1
      • AUI C2M Host TP1a: IEEE802.3ck, Annex 120G.3.1, Table 120G-1
      • AUI C2M Module TP4: IEEE802.3ck, Annex 120G.3.2, Table 120G-3
      • CR TP2: IEEE802.3ck, Section 162.9, Table 162-11
  • Streamlined and fully automated transmitter characterization of OIF (CEI-VSR/CEI-MR/CEI-LR) and IEEE (AUI/CR4/ KR4) PAM4 electrical transmitter specifications (chip-to-chip and chip-to-module)
  • In-depth analysis and debug capabilities of electrical PAM4 signals in combination with the PAM4 software package

Getting help and support

Product documents

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

TekExpress 400G-TXE Help

PDF version of this document can be downloaded from http://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

Conventions

This application help uses the following conventions:

  • The term "Application," and "Software" refers to the TekExpress 400G-TXE 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 1. 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.

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 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

Getting started

Hardware requirements

Minimum system requirements

The following table shows the minimum system requirements to install and run the TekExpress 400G-TXE solution.

Table 1. System requirements

Component

Description

Oscilloscope

  • DPO70K DX / SX series oscilloscopes
  • Firmware Version: 10.12 or above
  • Opt. DJA/DJAN and PAM400GCK

Software

  • PAMJET 10.9.2.279 or above
  • IronPython 2.7.3 installed
  • PyVisa 1.0.0.25 installed
  • Microsoft .NET 4.0 Framework
  • Microsoft Internet Explorer 7.0 SP1 or greater, or other Web browser for viewing reports
  • Adobe Reader software 7.0 or greater for viewing portable document format (PDF) files

Instruments and accessories required

TekExpress 400G-TXE application is launched on DPO70K series oscilloscope. The following table lists the instruments and accessories required for this application.

Table 1. Instruments and accessories required for 400G-TXE application
Instrument/Accessory Model number Quantity
Oscilloscope

DPO73304DX, MSO73304DX, DPO73304SX, DPS73308SX, DPO75002SX, DPS75004SX, DPO77002SX, DPS77004SX, DPO75902SX, DPS75904SX

2
Cables Compatible SMA cables with bandwidth > than 40 GHz (IEEE802.3cd/bs) and ≥ 59 GHz (IEEE802.3ck) for connecting single ended sources ATI channel. 2
Fixtures

For IEEE802.3cd/bs:

  • Wilder Host compliance board CEI-VSR/AUI-4 at TP1a (HCB-P) (Wilder part number: 640-0822-000)
  • Wilder Module compliance board CEI-VSR/AUI-4 at TP4 (MCB) (Wilder part number: 640-0823-000)
  • Any compatible text fixture for CEI-VSR/AUI-4 at TP0a, CEI-MR, CEI-LR, CR and KR
1
DC Blocks Compatible DC block with bandwidth range 50 KHz to 65 GHz 2
Attenuator 3, 6, or 10 dB attenuators 2

Software requirements

Downloading and installing the software

Complete the following steps to download and install the latest TekExpress 400G-TXE 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 OR KEYWORD 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 400G-TXE.

  5. Select Application/Analyze > TekExpress 400G-TXE 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.

Setting up the test environment

Compensate the signal path

Use the following procedure to compensate the internal signal acquisition path. Perform this procedure if the ambient temperature has changed more than 5 °C (9 °F) since you performed the last signal path compensation. Perform the signal path compensation once a week. Failure to do so may result in the instrument not meeting warranted performance levels.
  1. Power on and wait for the instrument to complete its warm up period before continuing with this procedure.
  2. Disconnect any probes you have connected to the input channels.
  3. Set the instrument to Menu mode.
  4. Select Instrument Calibration from the Utilities menu.
  5. Note any instructions that appear in the resulting control window.
  6. Click Run SPC to begin the procedure. The procedure may take several minutes to complete.
  7. Verify that the Status changes to Compensated after the procedure is complete. If the Calibration Status field indicates anything other than Compensated, see Signal Path Compensation Status for information on the readout and recommended action.
Note:When making measurements at vertical scale settings less than or equal to 5 mV, you should perform the signal path compensation at least once a week. Failure to do so may result in the instrument not meeting warranted performance levels at those volts/div settings.

Deskew

If skew is present between positive and negative channels, then the channels need to be deskewed before being used for waveform measurements.

Apply the appropriate input attenuator such that the signal on the screen for each channel can be adjusted (using the oscilloscope's Vertical > Scale settings) to less than 10 division Pk-Pk but greater than 8 division Pk-Pk.

Use maximum instrument bandwidth so narrow noise peaks that might reach out-of-range are visible in their full amplitude, rather than limited by the post-digitizer bandwidth processing. Set the record length to 50 MSa or longer; Measure both channel 1 and channel 2 with a Measure > Amplitude > Peak - Peak to monitor that the trace is without clopping, that is the measurements don't display a warning indicating over-driven input.

TekExpress 400G-TXE provides support for channel deskew and attenuation using the following method:

  1. Determine what the skew is for each channel.

    Please use method recommended by Tektronix. DPO70k SX oscilloscope to find the skew, for example, minimum common mode. Tektronix recommends using channel 1 as a reference with 0 skew, and entering a measured skew value in channel 2.

  2. From the TekScope menu, select Vertical > Deskew.
  3. In the Deskew/Attenuation window, click the channel 1, and set the skew to 0. Then select channel 2 button for the first channel to be deskewed.
  4. Click in the Ch(x) Deskew Time entry field and enter the skew. The skew can be +ve or –ve.
  5. Click the channel button for the next channel and repeat step 4.
  6. After entering the skew for all the channels that require it, from the Options menu in TekExpress 400G-TXE, select Deskew.
    Figure 1. Deskew
  7. Click Read from Scope to read the deskew and attenuation values from the oscilloscope.
  8. Click View values to view the deskew, attenuation, and bandwidth values.
  9. When the status in the dialog box indicates the deskew is finished, click Close.
Figure 2. Deskew-View values


Each input channel has its own deskew settings. Deskew compensates individual channels for probes or cables of different lengths. The instrument applies the delay values after each completed acquisition. The deskew values are saved as part of the instrument setup. The deskew values for the selected channel are retained until you change the probe, you restore a saved setup, or you recall the factory setup.

Note:If you perform the de-embed settings of all oscilloscope input connected components, then the Attenuation settings should be left at default (0 dB).

Running tests

Select tests, set acquisition parameters, set configuration parameters, set preferences parameters, and click Start to run the tests. While tests are running, you cannot access the Setup or Reports panels. To monitor the test progress, switch between the Status panel and the Results panel.

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 Alt + Tab key combination. To keep the TekExpress 400G-TXE application on top, select Keep On Top from the TekExpress Options menu.

The application displays report when the tests execution is complete.

Prerun checklist

  1. Make sure that the instruments are warmed up (approximately 20 minutes) and stabilized.
  2. Perform compensation: In the oscilloscope main menu, select Utilities > Instrument Compensation. Click Help in the compensation window for steps to perform instrument compensation.

Equipment connection setup

Click Setup > Test Selection > Schematic to view the equipment setup diagram(s).

Figure 1. Connection diagram for OIF (CEI-VSR at TP0a, CEI-MR, and CEI-LR) , IEEE (AUI at TP0a, TP0v, CR4, and KR4, and CR at TP2)


Figure 2. Connection diagram for OIF (CEI-VSR at TP1a) and IEEE (AUI at TP1a)


Figure 3. Connection diagram for OIF (CEI-VSR at TP1a) and IEEE (AUI at TP1a) for Eye measurements


Figure 4. Connection diagram for OIF (CEI-VSR at TP4) and IEEE (AUI at TP4)


Figure 5. Connection diagram OIF (CEI-VSR at TP4) and IEEE (AUI at TP4) for Eye measurements


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.
Note:The instruments required for the test setup must be connected and detected by the application, before running the test.
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.
    Search status of the instruments connected to LAN

  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.

Starting the application

To start the TekExpress 400G-TXE, select from the oscilloscope menu bar Applications/Analyze > TekExpress 400G-TXE.

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:\400G-TXE folder. If this file is not found, the application runs an instrument discovery program to detect connected instruments before starting TekExpress 400G-TXE.

To keep the TekExpress 400G-TXE application on top of any application, select Keep On Top from the options menu. If the application goes behind the oscilloscope application, select Applications/Analyze >TekExpress 400G-TXE to bring the application to the front.

Application controls

This section describes the application controls with functionality and its details.
Table 1. Application control description
ItemDescription
Options menu

Menu to display global application controls.
Test panel

Controls that open tabs for configuring test settings and options.
Start / Stop button

Use 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 button

Use the Pause button to pause the acquisition. When a test is paused, this button changes as Continue.
Clear button

Use 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 icon

Place the cursor over the top of the application window to move the application window to the desired location
Minimize icon

Minimizes the application.
Close icon

Close the application.
Mini view / 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.

Options menu functions

To access the Options menu, click in the upper-right corner of the application. It has the following selections:



Table 1. 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

Detects, lists, and refreshes the connected instruments found on the specified connections (LAN, GPIB, USB, Serial, Non-VISA Resources, TekLink, and VXI).

Keep On Top

Always keeps the TekExpress 400G-TXE application on top of all the applications.

Email SettingsConfigures email options for test run and result notifications.
DeskewLoads oscilloscope channel deskew settings into the application.
HelpDisplays the TekExpress 400G-TXE help.
About TekExpress

Displays the application name, version, and hyperlink to end the user license agreement.

Configure email settings

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: [email protected].
  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.
    • 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 0 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.
  8. To test your email settings, click Test Email.
  9. To apply your settings, click Apply.
  10. Click Close when finished.

TekExpress instrument control settings

Use the TekExpress Instrument Control Settings dialog box to search the instruments (resources) connected to the application. You can use the Search Criteria options to search the connected instruments depending on the connection type. The details of the connected instrument is displayed in the Retrieved Instruments window.

To access, click Options > Instrument Control Settings. Select GPIB as search criteria for TekExpress application and click Refresh. The connected instruments displayed in the Retrieved Instruments window and can be selected for use under Global Settings in the test configuration section.

Figure 1. TekExpress Instrument Control Settings window

See also

Options menu functions

Setup panel: Configure the test setup

The Setup panel contains sequentially ordered tabs that help you guide through the test setup and execution process.

DUT: Set DUT settings

Use the DUT tab to select parameters for the device under test. These settings are global and apply to all tests of current session. DUT settings also affect the list of available tests in the Test Selection tab.

Figure 1. DUT tab


Click Setup > DUT to access the DUT parameters:

Table 1. DUT tab configuration
Setting Description
DUT ID

Adds an optional text label for the DUT to reports. The default value is DUT001. The maximum number of characters is 32.

You cannot use the following characters in an ID name: (.,..,...,\,/:?”<>|*)

  Comments icon (to the right of the DUT ID field) Opens Comments dialog box to enter text to add to the report. Maximum size is 256 characters. To enable or disable comments appearing on the test report, see Select report options.
Acquire live waveforms Acquire active signals from the DUT for measurement and analysis.
Use pre-recorded waveform files Run tests on a saved waveform. Select Options > Open Test Setup to recall a saved test setup.
Mode
  • Compliance
  • User Defined
Standard
  • OIF-PAM4
  • IEEE-802.3cd/bs
  • IEEE 802.3ckTM
Specification
For OIF-PAM4 standard
  • CEI-VSR
  • CEI-MR
  • CEI-LR
For IEEE-802.3cd/bs standard
  • AUI
  • CR4
  • KR4
For IEEE 802.3ckTM standard
  • Version: IEEE 802.3ckTM
  • Interface:
    • AUI-C2C
    • AUI-C2M Host
    • AUI-C2M Module
    • CR
Test Points
For OIF-PAM4 standard
  • TP0a
  • TP1a
  • TP4
For IEEE-802.3cd/bs standard
  • TP0a
  • TP1a
  • TP4
For IEEE 802.3ck standard
  • Version: IEEE 802.3ckTM
  • Interface:
    • AUI-C2C
    • AUI-C2M Host
    • AUI-C2M Module
    • CR
Specification Version Displays the specification version for the selected Specification and Test Points.
Device Profile
DUT Type Select the DUT type
  • 56G
  • 112G
Symbol Rate Set the symbol rate to be tested.
Crosstalk Source Select crosstalk source when a cross talk generator is connected. This is applicable for eye measurements only.

Test Selection: Select the tests

Use the Test Selection tab to select the tests. The test measurements available depends on the settings selected in the DUT tab.

Figure 1. Test selection tab


Table 1. Test Selection tab configuration
SettingDescription
TestsSelect or clear a test. Highlight a test to show details in the Test Description pane.
Test DescriptionShows brief description of the highlighted test in the Test field.
Deselect All Click to clear all tests.
Select All Click to select all tests. All tests are selected by default.
SchematicClick to display the schematic diagram of the DUT test setup for the selected test. Use the diagram to verify the test setup before running the test.

Acquisitions: Set waveform acquisition settings

Use Acquisitions tab to view the test acquisition parameters. The contents displayed on this tab depends on the DUT type and the tests selected.

Figure 1. Acquisition tab


Note:400G-TXE application acquires all waveforms needed by each test before performing the analysis.
Table 1. Acquisitions tab configuration
SettingDescription
Connection Setup
Data +ve Select the source channel for data positive.
Data -ve 1Select the source channel for data negative.
Acquisition and Save OptionsAll Waveforms are saved before analysis

TekExpress 400G-TXE application saves all acquisition waveforms to files by default. Waveforms are saved in a unique folder for each session (a session is started when you click the Start button). The folder path is X:\TekExpress 400G-TXE\Untitled Session\<dutid>\<date>_<time>. Images created for each analysis, XML files with result values, reports, and other information specific to that particular execution are also saved in this folder.

Saving a session moves the session file contents from the Untitled Session folder to the specified folder name and changes the session name to the specified name.

1 The data sources must be either ATI or non-ATI channels.

400G TX CK Measurement waveform naming

When user captures the signals manually, the naming convention and ordering to load the waveform to TekExpress Acquisition panel should be followed as per below table.

Note:Lane and Run details are must for all the measurement in waveform name.
Test Name Waveform Naming ConventionWaveform Naming Example

C2C: Signal to AC Common mode noise Ratio (SCMR)

Input: Two waveforms

Append 'Diff'/'CommonMode'

  • 1st waveform: SCMR_Acq_DiffLane0_Run1.wfm
  • 2nd waveform: SCMR_Acq_CommonModeLane0_Run1.wfm

C2C, C2M Host/Module, CR: Peak-to-Peak AC-Common mode Voltage

Append 'LF'/'FB'DUT001_LF_Lane0_Run1.wfm

C2C, CR: Coefficient Range

Input: 3 waveforms

  1. Append "PRESET", Lane and Run Details
  2. Append C(-3), C(-2), C(-1), C(1), INCR, Lane and Run details
  3. Append C(-3), C(-2), C(-1), C(0), C(1), DECR, Lane and Run details
  1. PRESET_Lan0.wfm
  2. C(-2)_INCR_Lane0.wfm
  3. C(-2)_DECR_Lane0.wfm

C2C: Normalized coefficient step size

Input: 4 waveforms

  1. Append “PRESET”, Lane Details
  2. Append “INIT”, “ABS_COEFF_STEP_SIZE”, Lan detail
  3. Append “INCR”, “ABS_COEFF_STEP_SIZE”, Lan detail
  4. Append “DECR”, “ABS_COEFF_STEP_SIZE”, Lan detail
  1. PRESET_Lan0.wfm
  2. TxOPWfm_INIT_ABS_COEFF_STEP_SIZE_Lan0.wfm
  3. TxOPWfm_INCR_ABS_COEFF_STEP_SIZE_Lan0.wfm
  4. TxOPWfm_DECR_ABS_COEFF_STEP_SIZE_Lan0.wfm

C2M Host: Transition Time

C2M Module: Diff Peak to Peak Output Voltage Tx Enabled

Append 'Short’/ ‘Long’, Lane and Run details to the waveform name

Short_Lane0_Run1.wfm, Long_Lane0_Run1.wfm

C2M Host: VEC,EH

Inputs: 2 waveforms,

  • 1st waveform is Rough waveform and
  • 2nd waveforms are Actual Waveform
  1. DiffTx_EH_VEC_Acq_Diff_Rough_AnalysisLane0_Run1.wfm
  2. DiffTx_EH_VEC_Acq_Wfm1Lane0_Run1.wfm

C2M Module: Far End VEC, Far End EH

These measurements have two modes Short and Long. If Both is selected, then user need to load Four waveforms in below order.
  • 1st waveform: Rough analysis Far End Short
  • 2nd waveform: Far End Actual Short Waveform
  • 3rd Waveform: Rough Analysis Far End Long
  • 4th Waveform: Far End Actual Long Waveform
  1. DiffTx_EH_VEC_Acq_Diff_Rough_Analysis_FarEnd_Short_Lane0_Run1.wfm
  2. DiffTx_EH_VEC_Acq_Wfm1_FarEnd_Short_Lane0_Run1.wfm
  3. DiffTx_EH_VEC_Acq_Diff_Rough_Analysis_FarEnd_Long_Lane0_Run1.wfm
  4. DiffTx_EH_VEC_Acq_Wfm1_FarEnd_Long_Lane0_Run1.wfm

C2M Module: Near End VEC, Near End EH

These measurements have two modes Short and Long. If Both is selected, then user need to load Four waveforms in below order.
  • 1st waveform: Rough analysis Near End Short
  • 2nd waveform: Near End Actual Short Waveform
  • 3rd Waveform: Rough Analysis Near End Long
  • 4th Waveform: Near End Actual Long Waveform
  1. DiffTx_EH_VEC_Acq_Diff_Rough_Analysis_NearEnd_Short_Lane0_Run1.wfm
  2. DiffTx_EH_VEC_Acq_Wfm1_NearEnd_Short_Lane0_Run1.wfm
  3. DiffTx_EH_VEC_Acq_Diff_Rough_Analysis_NearEnd_Long_Lane0_Run1.wfm
  4. DiffTx_EH_VEC_Acq_Wfm1_NearEnd_Long_Lane0_Run1.wfm
CR: Coefficient Range
Input: 2 waveforms,
  1. Append “PRESET”, Lane and Run Details
  2. Append C(-3), C(-1), C(0), C(1) , DECR, Lane and Run details
  3. Append C(-2), INCR, Lane and Run details
  1. PRESET_Lan0.wfm,
  2. C(-2)_INCR_Lane0.wfm,
  3. C(-3)_DECR_Lane0.wfm

Configuration: Set measurement limits for tests

Use Configuration tab to view and configure the Global Settings and the measurement configurations. The measurement specific configurations available in this tab depends on the selections made in the DUT panel and Test Selection panel.

Table 1. Configuration tab: Common parameters
SettingsDescription
Mode
Determines whether test parameters are in compliance or can be edited.
  • Compliance: All the test parameters are editable except Use Cursors in Global Settings.
  • User Defined: All test parameters and global parameters are editable in this mode.
Limit Editor

Displays the upper and lower limits for the applicable measurement using different types of comparisons. In the Compliance Mode, you can view the measurement high and low limits used for the tests displayed in the tree view of the Measurements tab. When running tests in User Defined Mode, you can edit the limit settings in the Limits Editor.

The second table shows the tests with the limits calculated dynamically as per the specification.

Figure 1. Configuration tab: Global Settings


Table 2. Configuration tab: Global Settings configuration
Setting Description
Compliance Mode Select compliance mode. By default, Compliance Mode is selected.
User Defined Mode Select user defined mode
Global Settings
Instruments Detected

Displays the instruments connected to this application. Click the instrument name to open a list of available (detected) instruments.

Select Options > Instrument Control Settings and click Refresh to update the instrument list.

Note: Verify that the GPIB search criteria (default) is selected in the Instrument Control Settings.
General Configuration
Bandwidth Select the bandwidth limit for the oscilloscope.
Scope Noise

Enter the scope noise in mV. Scope noise the standard deviation of the noise of the oscilloscope. Scope noise is important for many of the electrical measurements.

To ensure accurate measurement results, measure the scope noise manually and set the compensation value in the TekExpress. For more information on how to measure and apply scope noise, please refer PAM4 Analysis tool help document.

De-embedding Filter Select to apply the de-embedding filter file for Data Positive and Data Negative.
Phase Inverted Filter for Data- (using SDLA with dual input mode) Select this option if the filter is created from SDLA using Dual input option. The negative channel filter must be phase inverted when you select this option.
Data+ Click Browse and select the de-embedding filter file (.flt) for data positive signal.
Data- Click Browse and select the de-embedding filter file (.flt) for data negative signal.
Tx Output Waveform
Samples per Symbol (M)

Select the number of samples per symbol for calculating the Tx out waveform parameters.

If the acquired signal has less samples than specified, re-sampling is done to achieve the required samples per symbol. By default it is 32.

Linear Pulse Length (Np)

Select the linear fit pulse curve length in Unit intervals (UI).

It is recommended to use higher value for better accuracy. The analysis time is more when you select higher value.

Linear Pulse Delay (Dp) (Dp<Np)Select the delay of the linear fit pulse.
Eye Configuration
CTLE Filter File Select the CTLE Filter File.

Compliance mode

  • All: Application will run through the CTLE filters.
    • For TP1a: CTLE filters from 1 dB - 9dB in steps of 0.5 dB
    • For TP4: For Near End, 1 dB, 1.5 dB, and 2 dB CTLE filters and for Far End, CTLE filters from 1 dB - 9 dB in steps of 0.5 dB
  • Best CTLE: After the first run, if the eye measurements are passed, best CTLE filter option gets enabled. User can run the measurement with the Best CLTE instead of looping through all CTLE filters in the specification.
Note:For 112G, CTLE filters from 1 dB - 13 dB in steps of 1 dB

User Defined mode

  • User can run the measurement with any specified CTLE filter. The application provides CTLE filters from 1 dB - 9 dB.

    Select the CTLE filters from the drop-down list or Custom to browse and select the custom CTLE filter files. Custom CTLE filters (CSV) must contain the following data, delimited by comma:

    CTLE peaking (dB): 1 to 9

    Gain: 0.05 to 2

    Poles and Zeros: 0.5 to 80

    Example:
    //dB,gain,pole1,pole2,pole3,zero1,zero2
              1,0.8913,18.6,14.1,1.2,8.359,1.2 
Target BER (1e-) /Target BER (10^-)

Select the Target BER (1e-). As per the compliance, Target BER should be set to 1e-5 and 1e-6 for IEEE and OIF standards respectively.

If the Target BER is set to higher values, more time is required to analyse the data. You can select BER of 1e-5 for quicker analysis.

Select the Target BER (10^-). As per the compliance, Target BER values should be set to 4.00 to 6.00 for IEEE802.3ck standards respectively.

Mask Width Select the mask width in Unit intervals (UI). This configuration is for Eye symmetry mask width measurement only.

Preferences: Set the test run preferences

Use Preferences tab to set the application action on completion of a measurement. The Preferences tab has the feature to enable or disable certain options related to the measurement execution.

Figure 1. Preferences tab


Refer the below table for the options available in the Preferences tab:

Table 1. Preferences tab settings
SettingDescription
Number of Runs
Acquire/Analyze each test <no> times (not applicable to Custom Tests)

Select to repeat the test run by setting the number of times. By default, the check box is enabled.

Deskew
Show alert when new deskew values are configured on TekScope
Popup Settings
Auto close Warnings and informations during Sequencing

Auto close after <no> seconds

Select to close the warnings and information window automatically after the specified amount of time.

Specify the time in seconds using the edit box.

Auto close Error Messages during Sequencing. Show in Reports

Auto close after <no> seconds

Select to close the error message window automatically after the specified amount of time.

Specify the time in seconds using the edit box.

Status panel: View the test execution status

The Status panel contains the Test Status and Log View tabs, which provides status on the test acquisition and analysis (Test Status) and listing of test tasks performed (Log View tab). The application opens the Test Status tab when you start to execute the test. Select the Test Status or the Log View tab to view these items while the test execution is in progress.

View test execution status

The tests are grouped and displayed based on the Clock and Data lane. It displays the tests along with the acquisition type, acquire, and analysis status of the tests. In pre-recorded mode, Acquire Status is not valid.

The Test Status tab presents a collapsible table with information about each test as it is running. Use the symbols to expand () and collapse () the table rows.

Figure 1. Test execution status view in Status panel


Table 1. Test execution status table headers
ControlDescription
Test NameDisplays the measurement name.
AcquisitionDescribes the type of data being acquired.
Acquire StatusDisplays the progress state of the acquisition:
  • To be started
  • Started Acquisition
  • Completed Acquisition
Analysis StatusDisplays the progress state of the analysis:
  • To be started
  • In Progress
  • Completed
  • Aborted

View test execution logs

The Test Status tab displays the detailed execution status of the tests. Also, displays each and every execution step in detail with its timestamp information. The log details can be used to troubleshoot and resolve any issue/bug which is blocking the test execution process.

Figure 1. Log view in Status panel


Table 1. Status panel settings
ControlDescription
Message HistoryLists all the executed test operations and timestamp information.
Auto Scroll

Enables automatic scrolling of the log view as information is added to the log during the test execution.

Clear LogClears all the messages from the log view.
Save

Saves the log file into a text file format. Use the standard Save File window to navigate to and specify the folder and file name to save the log text.

Results panel: View summary of test results

When a test execution is complete, the application automatically opens the Results panel to display a summary of test results.

In the Results table, each test result occupies a row. By default, results are displayed in summary format with the measurement details collapsed and with the Pass/Fail column visible.

Figure 1. Results panel with measurement results


Click icon on each measurement in the row to expand and to display the minimum and maximum parameter values of the measurement.

Filter the test results

Each column in the result table can be customized and displayed by enabling or disabling any column as per your requirement. You can change the view in the following ways:
  • To remove or restore the Pass/Fail column, select Preferences > Show Pass/Fail.
  • To collapse all expanded tests, select Preferences > View Results Summary.
  • To expand all the listed tests, select View Results Details from the Preferences menu in the upper right corner.
  • To enable or disable the wordwrap feature, select Preferences > Enable Wordwrap.
  • To view the results grouped by lane or test, select the corresponding item from the Preferences menu.
  • To expand the width of a column, place the cursor over the vertical line that separates the column from the column 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 clear all test results displayed, click Clear.

Reports panel: Configure report generation settings

Click Reports panel to configure the report generation settings and select the test result information to include in the report. You can use the Reports panel to configure report generation settings, select test content to include in reports, generate the report, view the report, browse for reports, name and save reports, and select report viewing options.

Report configuration settings

The Configuration tab describes the report generation settings to configure the Reports panel. Select report settings before running a test or when creating and saving test setups. Report settings configured are included in saved test setups.

Figure 1. Report panel- Configuration tab


Table 1. Report configuration panel settings
ControlDescription
ViewClick to view the most current report.
Generate Generates a new report based on the current analysis results.
Save AsSpecify a name for the report.
Report Update Mode Settings
Generate new reportEach time when you click Run and when the test execution is complete, it will create a new report. The report can be in either .mht, .pdf, or .csv file formats.
Append with previous run sessionAppends the latest test results to the end of the current test results report. Each time when you click this option and run the tests, it will run the previously failed tests and replace the failed test result with the new pass test result in the same report.
Include header in appended reportsSelect to include header in appended reports.
Replace current test resultsReplaces the previous test results with the latest test results. Results from newly added tests are appended to the end of the report.
In previous run, current session

Select to replace current test results in the report with the test result(s) of previous run in the current session.

In any run, any sessionSelect to replace current test results in the report with the test result(s) in the selected run session’s report. Click and select test result of any other run session.
Report Creation Settings
Report name

Displays the name and path of the <Application Name> report. The default location is at \My Documents>\My TekExpress\<Application Name>\Reports. The report file in this folder gets overwritten each time you run a test unless you specify a unique name or select to auto increment the report name.

To change the report name or location, do one of the following:
  • In the Report Path field, type the current folder path and name.
  • Double-click in the Report Path field and then make selections from the popup keyboard and click Enter.

Be sure to include the entire folder path, the file name, and the file extension. For example: C:\Documents and Settings\your user name\My Documents\My TekExpress\<Application Name> \DUT001.mht.

Note:You cannot set the file location using the Browse button.

Open an existing report

Click Browse, locate and select the report file and then click View at the bottom of the panel.

Save as type

Saves a report in the specified file type, selected from the drop-down list. The report is saved in .csv, .pdf, or .mht.

Note:

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

Sets the application to automatically increment the name of the report file if the application finds a file with the same name as the one being generated. For example: DUT001, DUT002, DUT003. This option is enabled by default.

Create report automatically at the end of the runSelect to create the report with the settings configured, at the end of run.
View report after generating

Automatically opens the report in a Web browser when the test execution is complete. This option is selected by default.

Configure report view settings

The View Settings tab describes the report view settings to configure the Reports panel. Select report view settings before running a test or when creating and saving test setups. Report settings configured are included in saved test setups.

Figure 1. Report panel-View settings tab


Table 1. Report panel view settings
ControlDescription
Include setup configurationSets the application to include hardware and software information in the summary box at the top of the report. Information includes: the oscilloscope model and serial number, the oscilloscope firmware version, and software versions for applications used in the measurements.
Group Report By
Test NameSelect to group the test results based on the test name in the report..
Test ResultSelect to group the test results based on the test result in the report.
Include user logoSelect to add your logo in the generated report. When selected, specify the logo file path in the Image file path option. Click browse and select the logo image.

View a generated report

Sample report and its contents

A report shows detailed results and plots, as set in the Reports panel.

Figure 1. Report


Setup Information
The summary box at the beginning of the report lists setup configuration information. This information includes the oscilloscope model and serial number, optical module model and serial number, and software version numbers of all associated applications.
Test Name Summary Table
The test summary table lists all the tests which are executed with its result status.
Measurement
The measurement table displays the measurement related details with its parameter value.
User comments

If you had selected to include comments in the test report, any comments you added in the DUT tab are shown at the top of the report.

Saving and recalling test setup

Overview

You can save the test setup and recall it later for further analysis. Saved setup includes the selected oscilloscope, general parameters, acquisition parameters, measurement limits, waveforms (if applicable), and other configuration settings. The setup files are saved under the setup name at X:\TekExpress 400G-TXE

Figure 1. Example of Test Setup File


Use test setups to:
  • Recall a saved configuration.
  • Run a new session or acquire live waveforms.
  • Create a new test setup using an existing one.
  • View all the information associated with a saved test, including the log file, the history of the test status as it executed, and the results summary.
  • Run a saved test using saved waveforms.
Note:Images that are shown in this Saving and recalling test setup chapter are for illustration purpose only and it may vary depending on the TekExpress application.

Save the configured test setup

You can save a test setup before or after running a test. You can create a test setup from already created test setup or using a default test setup. When you save a setup, all the parameters, measurement limits, waveform files (if applicable), test selections, and other configuration settings are saved under the setup name. When you select the default test setup, the parameters are set to the application’s default value.

  • Select Options > Save Test Setup to save the opened setup.

  • Select Options > Save Test Setup As to save the setup with different name.

Load a saved test setup

To open (load) a saved test setup, do the following:

  • Select Options > Open Test Setup.

  • From the File Open menu, select the setup file name from the list and click Open.

Note:Parameters that are set for the respective test setup will enable after opening the file.

Perform a test using pre-run session files

Complete the following steps to load a test setup from a pre-run session:
  1. Select Options > Open Test Setup.

  2. From the File Open menu, select a setup from the list and then click Open.

    Note:Parameters that are set for the respective test setup will enable after opening the file.
  3. Switch the mode to Use Pre-recorded waveform files in the DUT panel.

  4. Select the required waveforms from the selected setup in the Acquisitions tab and click Start.

  5. The selected waveform file can be removed/replaced by clicking on the () icon.

  6. After successful completion of the test, the waveform report files are stored at X:\<Application Name>\Reports.
  7. The overall test result status after completion of the test execution is displayed in the Results Panel.

Save the test setup with a different name

To save a test setup with a different name, follow the steps:
  1. Select Options > Save Test Setup As.

  2. Enter the new test setup name and click Save.

400G-TXE compliance measurements

DC common mode output voltage

This section verifies that the DC common mode output voltage of the DUT is within the conformable limits according to the specification.

Required test equipment

Minimum system requirements

Equipment connection diagram

Standard Specification Test Points Limits
Min Max
OIF-PAM4 OIF-CEI-VSR, Table 16-10 TP0a -0.3 V 2.8 V
OIF-CEI-VSR, Table 16-1 TP1a -0.3 V 2.8 V
OIF-CEI-VSR, Table 16-4 TP4 -0.35 V 2.85 V
OIF-CEI-MR, Table 17-2 Testpoint-T 0 V 1.9 V
OIF-CEI-LR, Table 21-2 Testpoint-T 0 V 1.9 V
IEEE-PAM4

AUI-IEEE802.3bs, Annex 120D.3.1

TP0a -0.3 V 2.8 V
TP1a -0.35 V 2.85 V
TP4 0 V 1.9 V

CR4-IEEE802.3cd Section 136.9.3

TP2 0 V 1.9 V

KR4-IEEE802.3cd Section 137.9.2

TP0a 0 V 1.9 V
AUI-C2C. IEEE 802.3ck, Annex 120F.3.1, Table 120F-1TP0v0.2 V1 V
AUI-C2M Host. IEEE 802.3ck Annex 120G.3.1, Table 120G-1TP1a-0.3 V2.8 V
AUI-C2M Module. IEEE 802.3ck Annex 120G.3.2, Table 120G-3TP4-0.35 V2.85 V
CR. IEEE802.3ck Section 162.9.4, Table 162-11TP2NA1.9 V

Measurement procedure

Maximum input to be provided to the ATI channels is ≤ 300 mV peak-to-peak. The DC common mode voltage of the signal cannot be measured using ATI channels. Measure the voltage using an external digital multimeter and enter the value in the application.

AC Common Mode Output Voltage

This section verifies that the common mode noise of the DUT is within the conformable limits according to the specification.

Required test equipment

Minimum system requirements

Equipment connection diagram

Standard Specification Test Points Limits
Min Max
OIF-PAM4 OIF-CEI-VSR, Table 16-10 TP0a NA 12 mV
OIF-CEI-VSR, Table 16-1 TP1a NA 17.5 mV
OIF-CEI-VSR, Table 16-4 TP4 NA 17.5 mV
OIF-CEI-MR, Table 17-2 Testpoint-T NA 30 mV
OIF-CEI-LR, Table 21-2 Testpoint-T NA 30 mV
IEEE-PAM4 AUI-IEEE802.3bs, Annex 120D.3.1 TP0a NA 30 mV
TP1a NA 17.5 mV
TP4 NA 17.5 mV
CR4-IEEE802.3cd Section 136.9.3 TP2 NA 30 mV
KR4-IEEE802.3cd Section 137.9.2 TP0a NA 30 mV
AUI-C2C. IEEE 802.3ck, Annex 120F.3.1, Table 120F-1TP0v0.2 V1 V

Input

Positive and negative signals from the oscilloscope by setting the bandwidth to 40 GHz

Measurement procedure

The common mode voltage is a measure of the deviation of the common mode signal around the mean value. Find the sum of the positive and negative signals to create the common mode signal and create a vertical histogram on this signal. The RMS value of the vertical histogram is the AC common mode output voltage.

To find the effective common mode voltage after removing the instrumentation noise, use the following formula:



Single-ended output voltage

This section verifies that the single-ended output voltage of the data positive and data negative signals of the DUT is within the conformable limits according to the specification.

Required test equipment

Minimum system requirements

Equipment connection diagram

Standard Specification Test Points Limits
Min Max
OIF-PAM4 OIF-CEI-MR, Table 17-2 Testpoint-T -0.3 V 1.9 V
OIF-CEI-LR, Table 21-2 Testpoint-T -0.3 V 1.9 V
IEEE802.3bs AUI-IEEE802.3bs, Annex 120D.3.1 TP1a -0.4 V 3.3 V
IEEE 802.3ckAUI-C2M Host. IEEE 802.3ck Annex 120G.3.1, Table 120G-1TP1a-0.4 V3.3 V

Input

Data positive and data negative signals

Measurement procedure

The single-ended output voltage is the measure of maximum and minimum values of the single-ended signals. Since the voltage levels can go beyond the 300 mV peak-to-peak, this measurement cannot be done using the ATI channels of the oscilloscope. Connect a DC block to eliminate the DC content present in the signal and then measure the maximum and minimum values of the positive and negative signals.

Effective Data Positive Max voltage = DC Common Mode + Data Positive Max

Effective Data Positive Max voltage = DC Common Mode + Data Positive Min

Note:DC Common Mode measurement is pre-requisite for this measurement and you will be prompted to measure DC voltage using external multimeter.

Diff peak to peak output voltage Tx enabled

This section verifies that the differential peak-to-peak voltage of the DUT is within the conformable limits according to the specification.

Required test equipment

Minimum system requirements

Equipment connection diagram

Standard Specification Test Points Limits
Min Max
OIF-PAM4 OIF-CEI-VSR, Table 16-10 TP0a 750 mV NA
OIF-CEI-VSR, Table 16-1 TP1a NA 880 mV
OIF-CEI-VSR, Table 16-4 TP4 NA 900 mV
OIF-CEI-MR, Table 17-2 Testpoint-T NA 1200 mV
OIF-CEI-LR, Table 21-2 Testpoint-T NA 1200 mV
IEEE-PAM4

AUI-IEEE802.3bs, Annex 120D.3.1

TP0a NA 1200 mV
TP1a NA 880 mV
TP4 NA 900 mV

CR4-IEEE802.3cd Section 136.9.3

TP2 NA 1200 mV

KR4-IEEE802.3cd Section 137.9.2

TP0a NA 1200 mV
AUI-C2C. IEEE 802.3ck Annex 120F.3.1, Table 120F-1TP0vNA1200 mV
AUI-C2M Host. IEEE 802.3ck Annex 120G.3.1, Table 120G-1TP1aNA750 mV
AUI-C2M Module. IEEE 802.3ck Annex 120G.3.2, Table 120G-3TP4NA
  • 600 mV(Short mode)
  • 845 mV (Long mode)
CR.IEEE 802.3ck Section 162.9.2, Table 162-11TP2NA1200 mV

Input

QPRBS13-CEI or any valid signal filtered through a fourth order Bessel Thomson filter.

Measurement procedure

The differential peak-to-peak voltage is the peak-to-peak value of the signal acquired using a base oscilloscope.

Diff peak to peak output voltage Tx disabled

This section verifies that the differential peak-to-peak voltage of the DUT is within the conformable limits according to the specification.

Required test equipment

Minimum system requirements

Equipment connection diagram

Standard Specification Test Points Limits
Min Max
IEEE-PAM4 AUI-IEEE802.3bs, Annex 120D.3.1 TP1a NA 30 mV
TP0a NA 35 mV

CR4-IEEE802.3cd Section 136.9.3

TP2 NA 30 mV

KR4-IEEE802.3cd Section 137.9.2

TP0a NA 30 mV
AUI-C2C. IEEE 802.3ck, Annex 120F.3.1, Table 120F-1TP0vNA35 mV
AUI-C2M Host. IEEE 802.3ck, Annex 120G.3.1, Table 120G-1TP1aNA35 mV
CR.IEEE 802.3ck Section 162.9.2, Table 162-11TP2NA30 mV

Input

Noise signal captured when the DUT is disabled (without applying filters)

Measurement procedure

  1. Capture the differential noise using Math1 as source (without applying filters). Math1 = (Data positive – Data negative)
    Note:For IEEE 802.3ck, Capture the differential noise using Math1 as Source , Math1 = Arnflt1 (Data positive – Data negative), Arbflt1 – Bessel Thomson Filter
  2. Select the oscilloscope free run mode option.
  3. In oscilloscopes menu, select Measure > Amplitude and select peak-to-peak measurement.
  4. Value of Peak-Peak measurement is reported as the differential peak-to-peak output voltage.

Transition time

This section verifies that the transition time of the DUT is within the conformable limits according to the specification.

Required test equipment

Minimum system requirements

Equipment connection diagram

Standard Specification Test Points Limits
Min Max
OIF-PAM4 OIF-CEI-VSR, Table 16-10 TP0a 7.5 ps NA
OIF-CEI-VSR, Table 16-1 TP1a 12 ps NA
OIF-CEI-VSR, Table 16-4 TP4 9.5 ps NA
IEEE802.3bs AUI-IEEE802.3bs, Annex 120D.3.1 TP1a 10 ps NA
AUI-IEEE802.3bs, Annex 120D.3.1 TP4 9.5 ps NA
IEEE 802.3ckAUI-C2M Host. Annex 120G.3.1, Table 120G-1TP1a
  • 10 ps (Short mode)
  • 15 ps (Long mode)
NA
AUI-C2M Module. Annex 120G.3.2, Table 120G-3TP48.5 psNA

Input

QPRBS13-CEI test pattern or any valid signal filtered through a fourth order Bessel Thomson filter.

Measurement procedure

Transition time (rise and fall) are defined as the time between the 20% and 80% times, or 80% and 20% times, respectively, of isolated -1 to +1 or +1 to -1 PAM4 edges. Using the QPRBS13-CEI test pattern, the transitions within sequences of three -1s followed by three +1s, and three +1s followed by three -1s, respectively, are measured. These are PAM4 symbols 1820 to 1825 and 2086 to 2091, respectively, where symbols 1 to 7 are the run of seven +1’s. In this case, the 0% level and 100% level may be estimated as the average signal within windows from -1.5 UI to -1 UI and from 1.5 UI to 2 UI relative to the edge.

TekExpress 400G-TXE application captures sufficient record length and uses PAM4 utility to perform this measurement.

Eye width, VEC (Vertical Eye Closure), Eye height, Eye linearity, and Eye symmetry mask width

This section verifies that the Eye width, VEC (Vertical Eye Closure), Eye height, Eye linearity, and Eye symmetry mask width of the DUT are within the conformable limits according to the specification.

Required test equipment

Minimum system requirements

Equipment connection diagram

Standard Measurement Specification Test Points Limits
Min Max
OIF-PAM4 Eye Width OIF-CEI-VSR, Table 16-1 TP1a 0.2 UI NA
Eye Height 35 mV NA
Eye Linearity 0.85 NA
Eye Symmetry Mask Width EW6 NA
Near End Eye Width OIF-CEI-VSR, Table 16-4 TP4 0.265 UI NA
Near End Eye Height 70 mV NA
Near End Eye Linearity 0.85 NA
Far End Eye Width 0.2 UI NA
Far End Eye Height 70 mV NA
Eye Symmetry Mask Width EW6 NA
IEEE-PAM4 Eye Symmetry Mask Width AUI-IEEE802.3bs TP1a 0.2 UI NA
Eye Height 32 mV NA
Near End Eye Symmetry Mask Width AUI-IEEE802.3bs TP4 0.265 UI NA
Near End Eye Height 70 mV NA
Far End Eye Symmetry Mask Width 0.2 UI NA
Far End Eye Height 30 mV NA
Eye heightAUI-C2M Host. IEEE 802.3ck Annex 120G.3.1, Table 120G-1TP1a10 mVNA
Vertical Eye closureNA12 dB
Near end Eye height AUI-C2M Module. IEEE 802.3ck Annex 120G.3.2, Table 120G-3TP415 mVNA
Far end Eye height
Near end Vertical Eye closureNA12 dB
Far end Vertical Eye closure

Input

Differential signal filtered through fourth order Bessel Thomson filter (with appropriate bandwidth) in concatenation with a Continuous Time Linear Equalizer (CTLE).

In case of AUI-IEEE802.ck, The Eye-opening parameters Eye height and VEC are measured with the effect of a reference receiver (Butterworth filter) which includes receiver input referred noise, a continuous-time filter and DFE (4th Order) as per the specification.

Cross talk calibration

Calibrate the co-propagating signals (signal on the other lanes) as per the specification, before performing the Eye measurements.

If you want to run with cross talk source, select Crosstalk Source from the DUT panel. By default, this option is unselected and application will provide normal connection diagram procedure.

Eye measurements are done after passing the signal through a reference receiver which includes a fourth order Bessel Thomson filter (in case of IEEE802.3ck Eye measurement, receiver Butterworth filter is used) with appropriate bandwidth cutoff and a selectable continuous time linear equalizer (CTLE filter). It is recommended to use PRBS13Q pattern for this measurement.

Note:For 112G-VSR Eye measurements, signal will be passed through additional five tap FFE equalizer after Bessel Thomson and CTLE filters

CTLE filters are selected as per the below table:

Table 1. CTLE filters selection table
Specification Test point CTLE filters

CEI-56G-VSR

At Host output TP1a

1 dB - 9 dB

At Module output TP4 (Near End)

1 dB - 2 dB

At CEI-VSR Module output TP4 (Far End)

1 dB - 9 dB

CEI-112G-VSR

At Host output TP1a, TP4

1 dB - 13 dB

200/400GAUI-4/8

At Host output TP1a

1 dB - 9 dB

At Module output TP4 (Near End)

1 dB - 3 dB

At Module output TP4 (Near End)

1 dB - 9 dB

Table 2. CTLE filters selection table for IEEE802.3ck AUI
ParameterSymbolValue(dB)
Continuous time filter, DC gain for TP1a
Range for gDC2 = 0gDC–2 to –9
Range for –1 ≤ gDC2 < 0–2 to –11
Range for –2 ≤ gDC2 < –1–4 to –10
Range for –3 ≤ gDC2 < –2–4 to –9
Step size1.0
Continuous time filter, DC gain 2 for TP1a
RangegDC2–3 to 0
Step size0.5
Continuous time filter, DC gain for TP4 near-end
RangegDC–5 to –1
Step size1.0
Continuous time filter, DC gain 2 for TP4 near-end
RangegDC2–2 to 0
Step size0.5
Continuous time filter, DC gain for TP4 far-end
RangegDC–9 to –2
Step size1.0
Continuous time filter, DC gain 2 for TP4 far-end
RangegDC2–3 to –1
Step size0.5

TekExpress uses PAM4/PAMJET utility to perform this measurement. Details about measuring Eye width and Eye height from the equalized signal is explained in OIF-CEI-56G-VSR and IEEE802.3bs specifications.

At module output, the Eye measurements is divided into 2 types:
  1. Near End Eye measurements
  2. Far End Eye measurements

Near End Eye width, VEC and Eye height are same as Eye width and Eye height measurements. Whereas far end Eye width and Eye height measurements are done with an emulated loss channel.

Steps to find the best CTLE filter:
  1. Best CTLE filter is the one which gives maximum Eye area (EW*EH) and it passes corresponding Eye parameters.
  2. In case of OIF standard, best CTLE filter is the one which gives passing result for Eye width, Eye height and Eye linearity.
  3. In case of IEEE standard, best CTLE filter is the one which gives maximum Margin from Limit for VEC and EH
For IEEE802.3ck Eye measure to find the Best CTLE there is two configuration in Application
  • Rapid
  • Exhaustive

Rapid approach finds the optimized and faster way to reach to best CTLE. Where exhaustive simply run each CTLE form list of individual and get the Best out of it. User can go the configuration tab and check the Best CTLE to run for next run.

Note:Eye measurement for IEEE802.3ck also use the below configuration as per specification.
Figure 1. Gaussian weighting window with +/- 0.05 UI has been configure to compute the Eye parameters.


Figure 2. Effect of a reference receiver as per IEEE802.3ck Annex 129G.5 using the configured CTLE and Rx filters ( Butterworth filter).


Measurement procedure:
  1. Acquire the signal (record length depends on the symbol rate).
  2. Calculate Eye measurements (Eye width, Eye height and Eye linearity if required) for all CTLE filters at BER of 1e-5.
  3. Calculate the Eye Area (EW*EH), select the CTLE with maximum Eye area and passing Eye parameter limits of spec as reference CTLE filter for analysis.
  4. Use the reference filter and measure the Eye parameters configured at BER as per specification (By default for OIF:1e-6 and for IEEE:1e-5 BER is used).

Eye symmetry mask width (ESMW)

An Eye mask of width as per the specification is drawn on the top of Eye diagram. All the three Eyes have to open beyond the mask drawn which will make the test pass.

Procedure to perform ESMW:
  1. Use the reference CTLE filter for analysis. Horizontal mid-point of Eye diagram (Tmid) is queried from the PAM4 utility.
  2. Mask width has to be read from UI.
  3. Mask_Left = Tmid - Mask_Width/2 and Mask_Right = Tmid + Mask_Width/2
  4. Test is pass if all 3 Eyes extend beyond the Eye width mask, else test is fail.
  5. Query Hupp_Left and Hupp_Right values from the PAM4 utility which correspond to the left and right Eye boundaries for Upper Eye.
  6. If (Mask_left>=Hupp_Left and Mask_Right<=Hupp_Right) then pass, otherwise fail
  7. Repeat steps 5 and 6 for middle and Lower Eyes. For middle eye, query Hmid_Left and Hmid_Right. Also for Lower Eye, query Hlow_left and Hlow_right


Signal-to-noise and distortion ratio

This section verifies that the signal-to-noise and distortion ratio (SNDR) of the DUT is within the conformable limits according to the specification.

Required test equipment

Minimum system requirements

Equipment connection diagram

Standard Specification Test Points Limits
Min Max
OIF-PAM4 OIF-CEI-VSR, Table 16-10 TP0a 31 dB NA
OIF-CEI-MR, Table 17-2 Testpoint-T 31 dB NA
OIF-CEI-LR, Table 21-2 Testpoint-T 31 dB NA
IEEE-PAM4

AUI-IEEE802.3bs, Annex 120D.3.1

TP0a 31 dB NA

CR4-IEEE802.3cd Section 136.9.3

TP2 33.3 dB NA

KR4-IEEE802.3cd Section 137.9.2

TP0a 32.5 dB NA
AUI-C2C. IEE 802.3ck, Annex 120F.3.1, Table 120F-1TP0v32.5 dBNA
CR. IEEE 802.3ck Section 162.9.4, Table 162-11TP231.5 dBNA

Input

Differential signal filtered through a fourth order Bessel Thomson filter with appropriate bandwidth

Measurement procedure

Signal-to-noise and distortion ratio is measured using the following formula:



Where,

Pmax is the linear fit pulse peak

σe - RMS error

σn – Standard deviation of noise

Pre-cursor and post-cursor equalization ratio

This section verifies that the pre-cursor and post-cursor equalization ratio of the Device Under Test (DUT) is within conformance limits as given in IEEE802.3 200GAUI-4/400GAUI-8 specification at test point TP0a, Table 120D-1, Section 120D.3.1.5.

Required test equipment

Minimum system requirements

Equipment connection diagram

Standard Specification Test Points
IEEE-PAM4

AUI-IEEE802.3bs, Annex 120D.3.1

TP0a

Measurement procedure

  1. Set the DUT in PRESET state and find the Linear fit pulse response.
  2. For pre-cursor test, prompt the user to vary the Local_eq_cm1 value from 0 to 3 and each time find the equalizer coefficients C(-1), C(0) and C(1) value using PRESET linear fit curve and linear fit of each state of Local_eq_cm1.
  3. Find the pre-cursor equalization ratio using below formula:

  4. Vary the Local_eq_c1 value from 0 to 5 and each time find the equalizer coefficients C(-1), C(0) and C(1) value using PRESET Linear fit curve and Linear fit of each state of Local_eq_c1.
  5. Find the Post-cursor equalization ratio using below formula:

Limits

Pre-cursor equalization ratio for each state of Local_eq_cm1 are the following:

Local_eq_cm1 value

0 0±0.04
1 -0.05±0.04
2 -0.1±0.04
3 -0.15±0.04

Pre-cursor equalization ratio for each state of Local_eq_c1 are the following:

Local_eq_c1 value

0 0±0.04
1 -0.05±0.04
2 -0.1±0.04
3 -0.15±0.04
4 -0.2±0.04
5 -0.25±0.04

Coefficient range (OIF)

This section verifies that the coefficient range of the DUT is within the conformable limits according to the specification.

Required test equipment

Minimum system requirements

Equipment connection diagram

Standard Specification Test Points Limits
Min Max
OIF-PAM4 OIF-CEI-MR, Table 17-2 Testpoint-T C(-1) -15% 0%
C(0) 60% 100%
C(1) -25% 0%
OIF-CEI-LR, Table 21-2 Testpoint-T C(-2) 0% 10%
C(-1) -28% 0%
C(0) 60% 100%
C(1) -28% 0%

Measurement procedure

  1. Acquire the PRESET signal. Export the linear fit impulse response curve from PAM4 utility.
  2. Increment a coefficient (C(-2), C(-1), C(0) or C(1)) such that it reaches its maximum value and keep all other coefficients in hold state. Export the Linear fit impulse response from PAM4 utility .
  3. Find the equalizer coefficients using PRESET and incremented linear fit pulses.
  4. Similarly ask the user to sufficiently decrement the equalizer coefficient (C(-1), C(0) and C(1)) one by one such that it reaches its minimum value. Capture the waveform and find the linear fit pulse from the PAM4 utility .

  5. Find the equalizer coefficients using PRESET and decremented linear fit pulses.

  6. Verify that each transmitter equalizer coefficient is within the minimum and maximum range of specification.
1

Increment each coefficient individually to reach its maximum value. You must reconfigure the coefficient to its original value before incrementing another coefficient.

2 Decrement each coefficient individually to reach its maximum value. You must reconfigure the coefficient to its original value before decrementing another coefficient.

Coefficient range (IEEE)

This section verifies that the coefficient range of the DUT is within the conformable limits according to the specification.

Required test equipment

Minimum system requirements

Equipment connection diagram

Standard Specification Test Points Limits
Min Max
IEEE-PAM4

CR4-IEEE802.3cd Section 136.9.3

TP2 C(-2) 0.1 NA
C(-1) NA -0.25
C(1) NA -0.25

KR4-IEEE802.3cd Section 137.9.2

TP0a C(-2) 0.1 NA
C(-1) NA -0.25
C(1) NA -0.25
AUI-C2C. IEEE 802.3ck, Annex 120F.3.1, Table 120F-1TP0vC(-3) decrementNA=<-0.05
C(-3) increment0>=NA
C(-2) decrementNA<=0.0
C(-2) increment>=0.1NA
C(-1) decrementNA<=-0.3
C(-1) increment>=0.0NA
C(0) decrementNA=<0.5
C(1) decrementNA=<-0.1
C(1) increment>=0.0NA
CR.IEEE 802.3ck Section 162.9, Table 162-11TP2C(-3) decrementNA<= - 0.06
C(-2) decrement>= 0.12NA
C(-1) decrementNA<= - 0.34
C(0) decrementNA<= - 0.5
C(1) decrementNA<= - 0.2

Measurement procedure

  1. Range for C(1) or value at minimum state for C(1): with C(-2) and C(-1) both set to zero and both C(0) and C(1) having received sufficient “decrement” requests so that they are at their respective minimum values, C(1) shall be less than or equal to -0.25
  2. Range for C(-1) or value at minimum state for C(-1): with C(-2) and C(1) set to zero and both C(-1) and C(0) having received sufficient “decrement” requests so that they are at their respective minimum values, C(-1) shall be less than or equal to -0.25
  3. Range for C(-2) or value at maximum state for C(-2): with C(-1) and C(1) set to zero, C(0) having received sufficient “decrement” requests so that it is at its minimum value, and C(-2) having received sufficient “increment” requests so that it is at its maximum value, C(-2) shall be greater than or equal to 0.1

Measurement procedure for IEEE 802.3ck

  1. Range for C(1) or value at minimum state for C(1): With C(-3), C(-2), and C(-1) set to zero and both C(0) and C(1) having received sufficient "increment" or “decrement” requests so that they are at their respective maximum or minimum values.
  2. Range for C(0) or value at minimum state for C(0): With C(-3), C(-2), C(-1), and C(1) set to zero and having received sufficient “decrement” requests so that it is at its minimum value.
  3. Range for C(-1) or value at minimum state for C(-1): with C(-3), C(-2), and C(1) set to zero and both C(-1) and C(0) having received sufficient "increment" or “decrement” requests so that they are at their respective maximum or minimum values.
  4. Range for C(-2) or value at maximum state for C(-2): With C(-3), C(-1), and C(1) set to zero, C(0) having received sufficient "increment" or "decrement" requests so that it is at its maximum value, and C(-2) having received sufficient "increment" or "decrement" requests so that it is at its maximum or minimum value.
  5. Range for C(-3) or value at minimum state for C(-3): With C(-2), C(-1), and C(1) set to zero and both C(-3) and C(0) having received sufficient "increment" or “decrement” requests so that they are at their respective maximum or minimum values.

Far end pre-cursor ISI ratio

This section verifies that the far end pre-cursor ISI ratio of the DUT is within the conformable limits according to the specification.

Required test equipment

Minimum system requirements

Equipment connection diagram

Standard Specification Test Points Limits
Min Max
IEEE-PAM4

CR4-IEEE802.3cd Section 136.9.3

TP2 C(-2) 0.1 NA
C(-1) NA -0.25
C(1) NA -0.25

KR4-IEEE802.3cd Section 137.9.2

TP0a C(-2) 0.1 NA
C(-1) NA -0.25
C(1) NA -0.25

Measurement procedure

  1. Apply the CTLE filter which produces the optimal eye opening and export the linear fit pulse from the PAM4 utility.
  2. Using linear fit impulse, measure the far end pre-cursor ratio:

    Far End Pre-cursor ratio = Ppre/Pmax

    Where,

    Ppre is the value of linear fit pulse 1 UI prior to the time of the pulse peak

    Pmax is the peak amplitude of the linear fit pulse

Transmitter output residual ISI

This section verifies that the maximum value of transmitter output residual ISI of the DUT is within the conformable limits according to the specification.

Required test equipment

Minimum system requirements

Equipment connection diagram

Standard Specification Test Points Limits
Min Max
IEEE-PAM4

AUI-IEEE802.3bs, Annex 120D.3.1

TP0a 34.8 dB NA

Measurement procedure

  1. Acquire the signal and export the linear fit pulse using PAM4 utility.
  2. Perform single sequence in PAM4 utility and export the linear fit pulse to a file.
  3. Using Linear fit pulse, calculate the SNR-ISI value using below equation:

    ISI cursors are calculated using below equation:



    Where,

    tp is the index of the linear fit pulse where p(tp) = pmax

    M is the oversampling ratio of the measured waveform and linear fit pulse

    Np is the linear fit pulse length

    Nb is given in Table 120D–8

For UAI-4 at TP0a, Equalization has to be performed on signal before running measurement for SNR-ISI. For CR4 and KR4, measurement is done on unequalized signal.

Equalization procedure

gDC gDC2 G ZLF Z1 PLF P1 P2
-15 to 0 -4 to 0 1 fb/40 fb/2.5 fb*2
  1. Equalize the signal with equalization filters given above(varying gDC and gDC2) ad measure the SNR-ISI in each case

  2. Maximum value of SNR-ISI is reported out as result.
Note:The observed SNRISI can be significantly influenced by the measurement setup, for example, the reflections in cables and connectors. High-precision measurement and careful calibration of the setup are recommended.

Normalized coefficients step size

This section verifies that the normalized coefficients step size of the DUT is within the conformable limits according to the specification.

Required test equipment

Minimum system requirements

Equipment connection diagram

Standard Specification Test Points
OIF-PAM4 CEI-MR T
CEI-LR T
IEEE-PAM4

CR4-IEEE802.3cd, Section 136.9.3

TP2

KR4-IEEE802.3cd, Section 137.9.2

TP0a
AUI- IEEE802.3ck, Section 120F.3.1, Table 120F-1TP0v

Measurement procedure

Normalized coefficient step size is the measure of variation in the equalizer coefficient when the increment or decrement operations were done.

  1. Set the DUT in PRESET state. Export the linear fit pulse response from PAM4 utility.
  2. Set the DUT in INITIALIZE state. Export the Linear fit pulse response from PAM4 utility.
  3. Calculate all the equalizer coefficient C(x) before using these linear fit pulse responses and denote it as C(x)_Before.
  4. Increment or decrement the equalizer coefficient in DUT by giving an increment or decrement command.
  5. Measure the linear fit pulse response. Calculate the updated equalizer coefficient C(x) in the signal using linear fit pulse response before and after sending increment or decrement request and denote it as C(x)_After.
  6. Find the Increment or decrement step size for equalizer coefficient C(x) using below equation.

    Increment or decrement step size = C(x)_After – C(x)_Before

    Normalized coefficient step size for C(x) is calculated using below equation:

    Normalized coefficient step size = Absolute value of ((Increment or Decrement step size) / C(x)_Before)*100

  7. Repeat the above method for all the coefficients to find the increment and decrement step sizes.

Limits

Limits CEI-MR (Normalized limit) C(-1), C(0) and C(1) CEI-LR (Normalized limit) C(-2), C(-1), C(0) and C(1) CR4 at TP2 and KR4 at TP0a (Absolute limit)
C(-2) C(-1), C(0) and C(1)

For coefficient increment

Min

0.5%

0.5%

0.005

0.005

Max

5%

2%

0.025

0.05

For coefficient decrement

Min

-5%

-2%

-0.025

-0.05

Max

-0.5%

-0.5%

-0.005

-0.005

Note:C(x) is an equalizer coefficient and the values can be C(-2), C(-1), C(0), and C(1)

IEEE 802.3ck, Step size for co-efficient C(-3), C(-2), C(-1), C(0), and C(1)

Standard SpecificationStageTest PointLimits
MinMax
IEEE 802.3ckAUI-C2C. IEEE 802.3ck, Annex 120F.3.1, Table 120F-1IncrementTP0v0.0050.025
Decrement -0.025-0.005
CR.IEEE 802.3ck Annex 162.9, Table 162-11IncrementTP20.0050.025
Decrement-0.025-0.005

Coefficient initialization

This measurement measures the values of equalizer coefficient when the DUT is in OUT_OF_SYNC and NEW_IC states (PRESET1, PRESET2 and PRESET3).

Required test equipment

Minimum system requirements

Equipment connection diagram

Coefficient Update state ic_reg Limits CR4 (TP2) and KR4 (TP0a)
C(-2) C(-1) C(0) C(1)
OUT_OF_SYNC N/A Min -0.025 -0.05 0.95 -0.05
Max 0.025 0.05 1.05 +0.05
NEW_IC PRESET 1 Min -0.025 -0.05 0.95 -0.05
Max 0.025 0.05 1.05 0.05
PRESET 2 Min -0.025 -0.2 0.7 -0.15
Max 0.025 -0.1 0.8 -0.05
PRESET 3 Min -0.025 -0.3 0.7 -0.05
Max 0.025 -0.2 0.8 0.05

Measurement procedure

  1. Configure the DUT in PRESET state, capture the signal and export the linear fit pulse curve using PAM4 utility.

  2. Configure the DUT into OUT_OF_SYNC state, capture the signal and export the linear fit pulse using PAM4 utility. Find the values of Equalizer coefficients in OUT_OF sync state using the linear fit curves of Preset state and OUT_OF_SYNC state.
  3. Configure DUT into NEW_IC state with PRESET1, PRESET2 and PRESET3. Each time export the linear fit pulse using the PAM4 utility. Measure the Equalizer coefficients for the each state (PRESET1, PRESET2 and PRESET3). All the time equalizer coefficients should be within the specified limit as per the specification.

Signaling rate

This section verifies that the signaling speed of the DUT is within the conformable limits according to the specification.

Required test equipment

Minimum system requirements

Equipment connection diagram

Standard Specification Test Points Limits
Min Max
IEEE-PAM4

AUI-IEEE802.3bs, Annex 120D.3.1

TP0a 26.5625 - 100ppm 26.5625 +100 rpm
TP1a 26.5625 - 100ppm 26.5625 +100 rpm
TP4 26.5625 - 100ppm 26.5625 +100 rpm

CR4-IEEE802.3cd Section 136.9.3

TP2 26.5625 - 100ppm 26.5625 +100 rpm

KR4-IEEE802.3cd Section 137.9.2

TP0a 26.5625 - 100ppm 26.5625 +100 rpm
IEEE 802.3ckAUI-C2C. IEEE 802.3ck, Annex 120F.3.1, Table 120F-1TP0v53.125±50ppma GBd
AUI-C2M Host. IEEE 802.3ck, Annex 120G.3.1, Table 120G-1TP1a53.125±50ppma GBd
AUI-C2M Module. IEEE 802.3ck, Annex 120G.3.2, Table 120G-3TP453.125a GBd (Informative Test)
CR.IEEE 802.3ck Section 162.9.2, Table 162-11TP253.125 ± 50 ppma GBd

Measurement procedure

  1. Perform oscilloscope settings.
  2. Capture the BT filtered differential signal using Math1 as source. Math1 = BT_filter(Data positive – Data negative)
  3. Configure signal source in PAM4 utility and perform single sequence.
  4. Signaling rate is measured using PAM4 utility and the results are queried.

Level separation mismatch ratio (RLM)

This section verifies that the level separation mismatch ratio of the DUT is within the conformable limits according to the specification.

Required test equipment

Minimum system requirements

Equipment connection diagram

Standard Specification Test Points Limits
Min Max
OIF-PAM4 OIF-CEI-MR, Table 17-2 Testpoint-T 0.95 NA
OIF-CEI-LR, Table 21-2 Testpoint-T 0.95 NA

IEEE802.3bs

200GAUI-4/ 400GAUI-8

TP0a

0.95 NA

IEEE802.3cd

50GBase CR/ 100GBase CR2/ 200GBase CR4

TP2

0.95 NA

IEEE802.3cd

50GBase KR/ 100GBase KR2/ 200GBase KR4

TP0a

0.95 NA
IEEE 802.3ckAUI-C2C. IEEE 802.3ck, Annex 120F.3.1, Table 120F-1TP0v0.95NA
CR. IEEE 802.3ck Section 162.9.4, Table 162-11TP20.95NA

Input

Differential signal filtered through a fourth order Bessel Thomson filter with appropriate bandwidth.

Measurement procedure

The level separation mismatch ratio RLM is defined by the following equation:

RLM = min ( ( 3.ES1), (3.ES2), (2 - 3.ES1), (2-3.ES2))

Where,

ES1 = (V+1/3 - Vmid / (V+1 - Vmid)

ES2 = (V-1/3 - Vmid / (V-1 - Vmid)

Vmid = (V-1 + V+1) / 2

V-1, V-1/3, V+1/3, and V+1 are the mean signal levels for each symbol of -1, -1/3, +1/3, and +1 PAM4 symbols, respectively.



Linear fit pulse peak

This section verifies that the linear fit pulse peak voltage of the DUT is within the conformable limits according to the specification.

Required test equipment

Minimum system requirements

Equipment connection diagram

Standard Specification Test Points Limits
Min Max
OIF-PAM4 OIF-CEI-MR, Table 17-2 Testpoint-T 0.83*Steady state voltage NA
OIF-CEI-LR, Table 21-2 Testpoint-T 0.83*Steady state voltage NA
IEEE-PAM4

AUI-IEEE802.3bs, Annex 120D.3.1

TP0a 0.76*Steady state voltage NA

CR4-IEEE802.3cd Section 136.9.3

TP2 0.49*Steady state voltage NA

KR4-IEEE802.3cd Section 137.9.2

TP0a 0.75*Steady state voltage NA

Input

Differential signal filtered through a fourth order Bessel Thomson filter with appropriate bandwidth.

Measurement procedure

The linear fit pulse peak is the peak value of linear fit pulse p(k).



Steady state voltage

This section verifies that the steady state voltage of the DUT is within the conformable limits according to the specification.

Required test equipment

Minimum system requirements

Equipment connection diagram

Standard Specification Test Points Limits
Min Max
OIF-PAM4 OIF-CEI-MR, Table 17-2 Testpoint-T 0.4 V 0.6 V
OIF-CEI-LR, Table 21-2 Testpoint-T 0.4 V 0.6 V
IEEE802.3bs

AUI-IEEE802.3bs, Annex 120D.3.1

TP0a 0.4 V 0.6 V
IEEE802.3cd

CR4-IEEE802.3cd Section 136.9.3

TP2 0.34 V 0.6 V

KR4-IEEE802.3cd Section 137.9.2

TP0a 0.4 V 0.6 V
IEEE 802.3ckAUI-C2M Host. IEEE 802.3ck, Annex 120G.3.1, Table 120G-1TP1aNA375 mV
CR. IEEE 802.3ck Section 162.9.4, Table 162-11TP20.387 V0.6 V

Input

Differential signal filtered through a fourth order Bessel Thomson filter with appropriate bandwidth.

Measurement procedure

The steady state voltage vf is defined as the sum of the linear fit pulse p(k), divided by M, as shown in following equation:



Even odd jitter

This section verifies that the maximum value of the even odd jitter of the DUT is within the conformable limits according to the specification.

Required test equipment

Minimum system requirements

Equipment connection diagram

Standard Specification Test Points Limits
Min Max
OIF-PAM4 OIF-CEI-VSR, Table 16-10 TP0a NA 0.019 UI
OIF-CEI-MR, Table 17-3 Testpoint-T NA 0.019 UI
OIF-CEI-LR, Table 21-3 Testpoint-T NA 0.019 UI
IEEE-PAM4

AUI-IEEE802.3bs, Annex 120D.3.1

TP0a NA 0.019 UI

CR4-IEEE802.3cd Section 136.9.3

TP2 NA 0.019 UI

KR4-IEEE802.3cd Section 137.9.2

TP0a NA 0.019 UI
IEEE 802.3ckAUI-C2C. IEEE 802.3ck, Annex 120F.3.1, Table 120F-1TP0vNA0.025 UI
CR. IEEE 802.3ck Section 162.9.4, Table 162-11TP2NA0.025 UI

Input

Differential signal filtered through a fourth order Bessel Thomson filter with the bandwidth of 40 GHz.

Measurement procedure

Even odd jitter is the measure of two repetitions of a QPRBS13-CEI test pattern. The deviation of the time of each transition from an ideal clock at the signaling rate is measured.

Even odd jitter is defined as the magnitude of the difference between the average deviation of all even-numbered transitions and the average deviation of all odd-numbered transitions. Determining if a transition is even or odd is based on the possible transitions (only actual transitions are measured and averaged).

Uncorrelated bounded high probability jitter & Uncorrelated unbounded gaussian jitter

This section verifies that the maximum value of the uncorrelated bounded high probability jitter (UBHPJ) and Uncorrelated unbounded gaussian jitter (UUGJ) is within the conformable limits according to the specification.

Required test equipment

Minimum system requirements

Equipment connection diagram

Standard Specification Test Points UBHPJ limits UUGJ limits
Min Max Min Max
OIF-PAM4 OIF-CEI-VSR, Table 16-10 TP0a NA 0.05 UI NA 0.01 UI

Input

Differential signal filtered through a fourth order Bessel Thomson filter with appropriate bandwidth.

Measurement procedure

UBHPJ and UUGJ are measured using a QPRBS13-CEI test pattern. This measurement requires at least 107 symbols.

This measurement finds all the zero crossings in the signal and then finds the average pulse width. The difference of the edge time is the jitter value. The jitter is filtered through a high pass filter. Find the CDF of the filtered jitter. The UBHPJ and UUGJ are calculated by the following equation:



Where,

J5 is the difference between the τHPF at the (1-0.5 × 10-5) and 0.5 × 10-5 probabilities.

J6 as the difference between the τHPF at the (1-0.5 × 10-6) and 0.5 ×10-6 probabilities.

Uncorrelated jitter RMS and uncorrelated J3 and J4 Jitter

This section verifies that the maximum value of the uncorrelated J3/J4 jitter (J3u/J4u) and Uncorrelated Jitter RMS (Jrms) are within the conformable limits according to the specification.

Required test equipment

Minimum system requirements

Equipment connection diagram

Standard Specification Test Points
OIF-PAM4

CEI-MR

T

CEI-LR

T

IEEE-PAM4

200GAUI-4/ 400GAUI-8

TP0a

50GBase CR/ 100GBase CR2/ 200GBase CR4

TP2

50GBase KR/ 100GBase KR2/ 200GBase KR4

TP0a

Input

Differential signal filtered through a fourth order Bessel Thomson filter with appropriate bandwidth.

Measurement procedure

J4u, J3u and Jrms are defined by measurements of 12 specific transitions in a PRBS13Q pattern to exclude correlated jitter. The 12 transitions represent all possible combinations of four identical symbols followed by two different identical symbols as shown in Table 120D–2. The sequences are located by the symbol indices given in the table where symbols 1 to 7 are the run of seven 3s.

J4u is defined as the time interval that includes all but 10–4 of fJ(t), from the 0.005th to the 99.995th percentile of fJ(t). JRMS is defined as the standard deviation of fJ(t).

J4u03is calculated the same way as J4u except that the calculation uses only transitions R03 and F30 as define in IEEE802.3 specification.

J3u is defined as the time interval that includes all but 10–3 of fJ(t), from the 0.05th to the 99.95th percentile of fJ(t).

This measurement requires minimum of 3500 specific transitions. Hence the application will capture 10 waveforms each with 8M. It analyzes the waveforms one by one using PAM4 utility until it accumulates the required number of transitions (3500). Incase of noisy signals, more data is needed to get the required number of transitions which application takes care internally.

Limits

Table 1. J4u jitter limits
Specification Test Points Min Max

CEI-MR

T

NA 0.118 UI

CEI-LR

T

NA 0.118 UI

200GAUI-4/ 400GAUI-8

TP0a

NA 0.118 UI
AUI-C2C. IEEE 802.3ck, Annex 120F.3.1, Table 120F-1TP0vNA0.128 UI
Table 2. Uncorrelated Jitter J4u03
SpecificationTest PointsMinMax
AUI-C2C. IEEE 802.3ck, Annex 120F.3.1, Table 120F-1TP0vNA0.118 UI
Table 3. J3u jitter limits
Specification Test Points Min Max

50GBase CR/ 100GBase CR2/ 200GBase CR4

TP2

NA 0.115 UI

50GBase KR/ 100GBase KR2/ 200GBase KR4

TP0a

NA 0.106 UI
CR. IEEE 802.3ck Section 162.9.4, Table 162-11TP2NA0.125 UI
Table 4. J3u03 jitter limits
SpecificationTest PointsMinMax
CR. IEEE 802.3ck Section 162.9.4, Table 162-11TP2NA0.115 UI
Table 5. Jrms limits
Specification Test Points Min Max

200GAUI-4/ 400GAUI-8

TP0a

NA 0.023 UI

50GBase CR/ 100GBase CR2/ 200GBase CR4

TP2

NA 0.023 UI

50GBase KR/ 100GBase KR2/ 200GBase KR4

TP0a

NA 0.023 UI
AUI-C2C. IEEE 802.3ck, Annex 120F.3.1, Table 120F-1TP0vNA0.023 UI
CR. IEEE802.3ck Section 162.9.4, Table 162-11TP2NA0.023 UI

Signal to AC common mode noise ratio (SCMR)

This section verifies the Signal to AC common mode noise ratio (SCMR) within the comfortable limits according to the specification.

StandardSpecificationTest pointLimits
MinMax
IEEE 802.3ckAUI-C2C. IEEE 802.3ck, Annex 120F.3.1, Table 120F-1TP0v15 dBNA

Measurement procedure

Signal to AC common-mode noise ratio, SCMR, is defined by the below equation with the exception that the full-band peak-to-peak AC common-mode voltage is defined in 120F.3.1.1.

Signal to AC common-mode noise ratio, SCMR, is calculated using Equation,



Where,

SCMR is the signal to AC common-mode noise ratio in dB

Vpeak is defined as a maximum value of p(k).

P(k) is linear fit pulse response

VCMFB is the full-band peak-to-peak AC common-mode voltage defined by the method specified in “Peak-Peak AC Common mode Voltage” and measured with the transmitter equalization set to “no equalization”

Peak-Peak AC Common mode voltage

This section verifies Peak-Peak AC common mode voltage within the comfortable limits according to the specification.

StandardSpecificationTest pointlimits
MinMax
IEEE 802.3ckAUI-C2C. Annex 120F.3.1, Table 120F-1TP0vNA32 mV (Low Frequency (VCMLF))
AUI-C2M Host. Annex 120G.3.1, Table 120G-1TP1aNA
  • 32 mV (Low Frequency (VCMLF))
  • 80 mV (Full Band (VCMFB))
AUI-C2M Module. IEEE 802.3ck, Annex 120G.3.2, Table 120G-3TP4NA
  • 32 mV (Low Frequency (VCMLF))
  • 80 mV (Full Band (VCMFB))
CR.IEEE802.3ck Section 162.9.2, Table 162-11TP2NA
  • 30 mV (Low Frequency (VCMLF))
  • 80 mV (Full Band (VCMFB))

Measurement procedure

The low-frequency and full-band peak-to-peak AC common-mode voltage, VCMLF and VCMFB, respectively, are defined by the method specified as below with the exception that the peak-to-peak AC common-mode voltage is defined as the AC common-mode voltage range measured at TP0v that includes all but 10-5 of the measured distribution, from 0.000005 to 0.999995 of the cumulative distribution.

Full-band peak-to-peak AC common-mode voltage, VCMFB, is defined as the AC common-mode voltage range that includes all TP0v but 10-5 of the measured distribution, from 0.000005 to 0.999995 of the cumulative distribution. The transmitter equalization is turned off (preset 1 condition).

Low-frequency peak-to-peak AC common-mode voltage, VCMLF is defined in the same way as VCMFB, except that it is measured with a low-pass filter defined with cutoff 100 MHz.

Signal to Residual Inter symbol Interface Ratio (SNRISI)

This section verifies the Signal to Residual Inter Symbol Interface Ratio (SNRISI) within the comfortable limits according to the specification.

StandardSpecificationTest pointLimits
MinMax
IEEE 802.3ckAUI-C2C. IEEE 802.3ck, Annex 120F.3.1, Table 120F-1TP0v28 dBNA
CR. IEEE 802.3ck Section 162.9.4, Table 162-11TP226.7 dBNA

Measurement procedure

Signal-to-residual-intersymbol-interference ratio SNRISI is defined by the method with the exception that the continuous time filter settings are provided in Table 120F–8

SNRISI is computed using below equation. It is computed from pmax and ISIcursors after these have been recalculated with CTLE described in specification and optimized for maximum SNRISI.

ISIcursors =[p(tp +M x ( Nb +1)) , p(tp +M x ( Nb +2)) , ……………., p(tp +M x ( Nb -Dp-1)) ]



tp – is the index of the linear fit pulse where p(tp) equals pmax

M – is the oversampling ratio of the measured waveform and linear fit pulse

Np – is the linear fit pulse length

Nb - 6

  1. The linear fit pulse response p(k) is determined using the linear fit procedure in specification.
  2. The continuous time filter parameters are provided in specification. For calculation of SNRISI using above equation a value of 6 is used for Nb.
  3. A time offset is added to tp whose value is swept from –0.5 UI to 0.5 UI when calculating ISIcursors. SNRISI is defined as the lowest value found across the time offset sweep.
  4. The transmitter equalizer setting is chosen, within the required coefficient ranges to result in the highest SNRISI value.

Difference steady-state voltage dvf

This section verifies Difference steady-state voltage dvf within the comfortable limits according to the specification.

StandardSpecificationTest pointLimits
MinMax
IEEE 802.3ckAUI-C2C. IEEE 802.3ck, Annex 120F.3.1, Table 120F-1TP0v0 V NA

Measurement procedure

The difference steady-state voltage, dvf, is calculated using below Equation







Figure 1. Measurement menthod for transmitter reference steady-state voltage, pulse peak and ERL


  1. User need to brown Test Fixture S4p file to compute the Vf(ref).
  2. Measurement will compute the 'h()' using Reference device and Package model, Test Fixture scattering parameters.
  3. Acquire the signal
  4. Select the dvf test in PAMJET, which compute the vf(mean) from acquire signal and vf(ref) using above formula.
  5. Difference between Vf(mean) and Vf(ref) is reported to compare against the limit.

Difference linear fit pulse peak ratio dRpeak

This section verifies the Difference steady-state voltage dvf within the comfortable limits according to the specification.

StandardSpecificationTest pointLimits
MinMax
IEEE 802.3ckAUI-C2C. IEEE 802.3ck, Annex 120F.3.1, Table 120F-1TP0v0VNA


Measurement procedure

The difference pulse peak ratio, dRpeak, is calculated as the difference between measured pulse peak ratio, and reference pulse peak ratio.

  1. dRpeak is same as dvf. All the steps of dvf are getting executed first.
  2. dRpeak ratio is calculated as per above equations.
  3. Rpeak(mean) is the ration of Vpeak(meas) and Vf(meas) , which are calculated from acquired signal.
  4. Rpeak(ref) is ratio of Vpeak(ref) and Vf(ref), which are calculated as define in “dvf” measurement equations.
  5. Final difference between Rpeak(mean) and Rpeak(ref) is reported to compare against the limit.

Linear fit pulse peak ratio Rpeak

This section verifies the Rpeak within the comfortable limits according to the specification.

StandardSpecificationTest pointLimits
MinMax
IEEE 802.3ckCR. IEEE 802.3ck Section 162.9.4, Table 162-11TP20.397 VNA

SCPI Commands

About SCPI command

You can use the Standard Commands for Programmable Instruments (SCPI) to communicate remotely with the TekExpress application. Complete the TCPIP socket configuration and the TekVISA configuration in the oscilloscope or in the device where you are executing the script.
Note:If you are using an external PC to execute the remote interface commands, then install TekVISA in the PC to make the configurations.

Socket configuration for SCPI commands

This section describes the steps to configure the TCPIP socket configuration in your script execution device and the steps to configure the TekVISA configuration in the oscilloscope to execute the SCPI commands.

TCPIP socket configuration

  1. Click Start > Control Panel > System and Security > Windows Firewall > Advanced settings.

  2. In Windows Firewall with Advanced Security menu, select Windows Firewall with Advanced Security on Local Computer > Inbound Rules and click New Rule…

  3. In New Inbound Rule Wizard menu
    1. Select Port and click Next.

    2. Select TCP as rule apply, enter 5000 for Specific local ports and click Next.

    3. Select Allow the connection and click Next.

    4. Select Domain, Private, Public checkbox and click Next.

    5. Enter Name, Description (optional), and click Finish.

  4. Check whether the Rule name is displayed in Windows Firewall with Advanced Security menu > Inbound Rules.

TekVISA configuration

  1. Click Start > All Programs > TekVISA > OpenChoice Instrument Manager.

  2. Click Search Criteria. In Search Criteria menu, click LAN to Turn-on. Select Socket from the drop-down list, enter the IP address of the TekExpress device in Hostname and type Port as 5000. Click to configure the IP address with Port.

    Enter the Hostname as 127.0.0.1 if the TekVISA and TekExpress application are in the same system, else enter the IP address of the oscilloscope where the TekExpress application is running.



  3. Click Search to setup the TCPIP connection with the host. Check whether the TCPIP host name is displayed in OpenChoice Instrument Manager > Instruments.

  4. Double-click OpenChoice Talker Listener and enter the Command *IDN? in command entry field and click Query. Check that the Operation is successful and Talker Listener Readout displays the Command / Data.

Set or query the device name of application

This command sets or queries the device name of the application.

Syntax

TEKEXP:SELECT DEVICE,"<DeviceName>" (Set)

TEKEXP:SELECT? DEVICE (Query)

Command arguments

Argument NameArgument Type

<DeviceName>

<String>

Returns

<String>

Examples

TEKEXP:SELECT DEVICE,"<DeviceName>" command sets the device name of the application.

TEKEXP:SELECT? DEVICE command returns the selected device name of the application.

Set or query the suite name of the application

This command sets or queries the suite name of the application.

Syntax

TEKEXP:SELECT SUITE,"<SuiteName>" (Set)

TEKEXP:SELECT? SUITE (Query)

Command arguments

SuiteName
  • TP0a, TP1a, TP4 for OIF-PAM4 CEI-VSR
  • Testpoint-T for OIF-PAM4 CEI-MR and OIF-PAM4 CEI-LR
  • TP0a, TP1a, TP4 for IEEE-PAM4 AUI
  • Testpoint-TP2 for IEEE-PAM4 CR4
  • Testpoint-TP0a for IEEE-PAM4 KR4

Returns

<String>

Examples

TEKEXP:SELECT SUITE,"<SuiteName>" command sets the suite name of the application.

TEKEXP:SELECT? SUITE command returns the selected suite of the application.

Set or query the test name of the application

This command selects or deselects the specified test name of the application.

Syntax

TEKEXP:SELECT TEST,"<TestName>",<Value> (Set)

TEKEXP:SELECT TEST,"<ALL>" (Set)

TEKEXP:SELECT? TEST (Query)

Command arguments

TestNameValue
OIF-PAM4 CEIVSR
  • DC Common Mode Output Voltage (TP0a, TP1a, TP4)
  • Diff Peak to Peak Output Voltage Tx Enabled (TP0a, TP1a, TP4)
  • AC Common Mode Output Voltage (TP0a, TP1a, TP4)
  • Transition Time (TP0a, TP1a, TP4)
  • Signal To Noise And Distortion Ratio (TP0a, TP1a, TP4)
  • Even Odd Jitter (TP0a)
  • Uncorrelated Bounded High Probability Jitter (TP0a)
  • Uncorrelated Unbounded Gaussian Jitter (TP0a)
  • Eye Width (TP1a)
  • Eye Height (TP1a)
  • Eye Linearity (TP1a)
  • Eye Symmetry Mask Width (TP4)
  • Near End Eye Width (TP4)
  • Near End Eye Height (TP4)
  • Near End Eye Linearity (TP4)
  • Near End Eye Symmetry Mask Width (TP4)
  • Far End Eye Width (TP4)
  • Far End Eye Height (TP4)
  • Far End Eye Symmetry Mask Width (TP4)

{True | False} or {1 | 0}

It represents selected or unselected.

Where,

True or 1 - Selected

False or 0 - Unselected

OIF-PAM4 CEI-MR
  • DC Common Mode Output Voltage
  • Diff Peak to Peak Output Voltage Tx Enabled
  • AC Common Mode Output Voltage
  • Single Ended Output Voltage
  • Signal To Noise And Distortion Ratio
  • Level Separation Mismatch Ratio
  • Linear Fit Pulse Peak
  • Steady State Voltage
  • Step size for coefficient C(-1)
  • Step size for coefficient C(0)
  • Step size for coefficient C(1)
  • Coefficient Range C(-1)
  • Coefficient Range C(0)
  • Coefficient Range C(1)
  • Even Odd Jitter
  • Jitter RMS
  • Uncorrelated J4 Jitter

{True | False} or {1 | 0}

It represents selected or unselected.

Where,

True or 1 - Selected

False or 0 - Unselected

OIF-PAM4 CEI-LR
  • DC Common Mode Output Voltage
  • Diff Peak to Peak Output Voltage Tx Enabled
  • AC Common Mode Output Voltage
  • Single Ended Output Voltage
  • Signal To Noise And Distortion Ratio
  • Level Separation Mismatch Ratio
  • Linear Fit Pulse Peak
  • Steady State Voltage
  • Step size for coefficient C(-2)
  • Step size for coefficient C(-1)
  • Step size for coefficient C(0)
  • Step size for coefficient C(1)
  • Coefficient Range C(-2)
  • Coefficient Range C(-1)
  • Coefficient Range C(0)
  • Coefficient Range C(1)
  • Even Odd Jitter
  • Jitter RMS
  • Uncorrelated J4 Jitter

{True | False} or {1 | 0}

It represents selected or unselected.

Where,

True or 1 - Selected

False or 0 - Unselected

IEEE-PAM4 AUI
  • DC Common Mode Output Voltage (TP0a, TP1a, TP4)
  • Diff Peak to Peak Output Voltage Tx Disabled (TP0a, TP1a)
  • Diff Peak to Peak Output Voltage Tx Enabled (TP0a, TP1a, TP4)
  • AC Common Mode Output Voltage (TP0a, TP1a, TP4)
  • Signaling Rate (TP0a, TP1a, TP4)
  • Signal To Noise And Distortion Ratio (TP0a)
  • Level Separation Mismatch Ratio (TP0a)
  • Linear Fit Pulse Peak (TP0a)
  • Steady State Voltage (TP0a)
  • Pre Cursor Equalization (TP0a)
  • Post Cursor Equalization (TP0a)
  • Transmitter output residual ISI (TP0a)
  • Even Odd Jitter (TP0a)
  • Uncorrelated J4 Jitter (TP0a)
  • Jitter RMS (TP0a)
  • Single Ended Output Voltage (TP1a)
  • Transition Time (TP1a, TP4)
  • Eye Height (TP1a)
  • Eye Symmetry Mask Width (TP1a)
  • Near End Eye Height (TP4)
  • Near End Eye Symmetry Mask Width (TP4)
  • Far End Eye Height (TP4)
  • Far End Eye Symmetry Mask Width (TP4)
  • Far End Precursor ISI Ratio (TP4)

{True | False} or {1 | 0}

It represents selected or unselected.

Where,

True or 1 - Selected

False or 0 - Unselected

IEEE-PAM4 CR4 and KR4
  • DC Common Mode Output Voltage
  • Diff Peak to Peak Output Voltage Tx Disabled
  • Diff Peak to Peak Output Voltage Tx Enabled
  • AC Common Mode Output Voltage
  • Signaling Rate
  • Signal To Noise And Distortion Ratio
  • Level Separation Mismatch Ratio
  • Linear Fit Pulse Peak
  • Steady State Voltage
  • Coefficient Range
  • OUT_OF_SYNC
  • NEW_IC PRESET1
  • NEW_IC PRESET2
  • NEW_IC PRESET3
  • Step size for coefficient C(-2)
  • Step size for coefficient C(-1)
  • Step size for coefficient C(0)
  • Step size for coefficient C(1)
  • Even Odd Jitter
  • Jitter RMS
  • Uncorrelated J3 Jitter

{True | False} or {1 | 0}

It represents selected or unselected.

Where,

True or 1 - Selected

False or 0 - Unselected

IEEE 802.3ck CR
  • DC Common Mode Output Voltage
  • Diff Peak to Peak Output Voltage Tx Disabled
  • Diff Peak to Peak Output Voltage Tx Enabled
  • Signaling Rate
  • Signal To Noise And Distortion Ratio
  • Level Seperation Mismatch Ratio (RLM)
  • Peak-to-peak AC common-mode Voltage
  • Signal to Residual Intersymbol Interference ratio(SNRisi)
  • Jitter RMS
  • Uncorrelated J3 Jitter
  • J3u03
  • Steady State Voltage (vf)
  • Even Odd Jitter
  • Llinear fit pulse peak ratio (Rpeak)
  • Coefficient Range C(-3)
  • Coefficient Range C(-2)
  • Coefficient Range C(-1)
  • Coefficient Range C(1)
  • Coefficient Range C(0)
  • Step size for coefficient C(-3)
  • Step size for coefficient C(-3)
  • Step size for coefficient C(-1)
  • Step size for coefficient C(1)
  • Step size for coefficient C(0)

{True | False} or {1 | 0}

It represents selected or unselected.

Where,

True or 1 - Selected

False or 0 - Unselected

Returns

{True | False} or {1 | 0}

Examples

TEKEXP:SELECT TEST,"<TestName>",1 command selects the specified test in the Test Panel.

TEKEXP:SELECT TEST,"<ALL>" command select all the tests in the Test Panel.

TEKEXP:SELECT? TEST command returns the list of selected tests.

Set or query the version name of the application

This command sets or queries the version name of the application.

Syntax

TEKEXP:SELECT VERSION,”<VersionName>” (Set)

TEKEXP:SELECT? VERSION (Query)

Command arguments

VersionNameArgument TypeValid Values
<VersionName><String>

It is the name of the version on the DUT panel of the application.

Returns

<String>

Examples

TEKEXP:SELECT VERSION,”<VersionName>” command sets the version name of application.

TEKEXP:SELECT? VERSION command returns the version name of application.

Set or query the general parameter values

This command sets or queries the general parameter values of the application.

Syntax

TEKEXP:VALUE GENERAL,"<ParameterName>","<Value>" (Set)

TEKEXP:VALUE? GENERAL,"<ParameterName>" (Query)

Command arguments

Table 1. Command arguments for general settings
ParameterNameValue
DUTID CommentUser comment
DEVICEIEEE-CK
MODE
  • COMPLIANCE
  • USER-DEFINED
Replace Runsession Path

Session file path.

Example: X:\400G-TXE\Session1\DUT001\20170421_121534

Include Pass/Fail Results Summary"True" or "False"
Include Detailed Results"True" or "False"
Include Plot Images"True" or "False"
Include Setup Configuration"True" or "False"
Include User Comments"True" or "False"
Save As Type
  • Web Archive (*.mht;*.mhtml)
  • PDF (*.pdf;)
  • CSV (*.csv;)
Run Test More than Once"True" or "False"
Number of Runs1 to 50
On Failure Stop and Notify"True" or "False"
Timer Warning Info Message Popup"True" or "False"
Timer Warning Info Message Popup Duration1 to 300
Timer Error Message Popup"True" or "False"
Timer Error Message Popup Duration1 to 300

Lane0 Connected to:Lane0+:

Single Ended

Valid values are:
  • CH1
  • CH2
  • CH3
  • CH4
DUT TypeValid values are:
  • "56G"
  • "112G"
Data Rate (GBd) for OIF-PAM4Valid values are:
  • For "56G", limit is 18 to 29
  • For "112G", limit is 36 to 58
Samples per Symbol (M)32 to 200
Linear pulse length (Np)Valid values are:
  • For OIF-PAM4: (5 to 100)
  • For IEEE-PAM4: (5 to 200)
  • For IEEE-CK: (5 to 200)
Linear pulse delay (Dp)Valid values are:
  • For OIF-PAM4: (2 to Np-2)
  • For IEEE-PAM4: (2 to Np-2)
  • For IEEE-CK: (4 to 146)
NearEnd Mask Width0.1 to 0.5
FarEnd Mask Width0.1 to 0.5
Bandwidth
  • "50 GHz"
  • "59 GHz"
  • "Full BW"
Scope Noise1 to 20
Target BER (1e-)/Target BER (10^-)4 to 6
Mask Width0.1 to 0.5
CTLE FilterFile
  • ALL(1-9dB)
  • 0 dB
  • 1 dB
  • 1.5 dB
  • 2 dB
  • 2.5 dB
  • 3 dB
  • 3.5 dB
  • 4 dB
  • 4.5 dB
  • 5 dB
  • 5.5 dB
  • 6 dB
  • 6.5 dB
  • 7 dB
  • 7.5 dB
  • 8 dB
  • 9 dB
  • Custom
  • BestCTLE
Near End CTLE FilterFile
For OIF, valid values are:
  • ALL(1-2dB)
  • 0 dB
  • 1 dB
  • 1.5 dB
  • 2 dB
  • Custom
  • BestCTLE
For IEEE, valid values are:
  • ALL(1-3dB)
  • 0 dB
  • 1 dB
  • 1.5 dB
  • 2 dB
  • 2.5 dB
  • 3 dB
  • Custom
  • BestCTLE
Far End CTLE FilterFile
  • ALL(1-9dB)
  • 0 dB
  • 1 dB
  • 1.5 dB
  • 2 dB
  • 2.5 dB
  • 3 dB
  • 3.5 dB
  • 4 dB
  • 4.5 dB
  • 5 dB
  • 5.5 dB
  • 6 dB
  • 6.5 dB
  • 7 dB
  • 7.5 dB
  • 8 dB
  • 9 dB
  • Custom
  • BestCTLE
Apply Filter"True" or "False"
Data Positive De-Embedding filter

Filter file path

Example: TEKEXP:VALUE GENERAL,"De-Embedding filter","C:\"

Data Negative De-Embedding filter

Filter file path

Example: TEKEXP:VALUE GENERAL,"De-Embedding filter","C:\"

Crosstalk source"True" or "False"
Phase Inverted Filter For Data-"True" or "False"
Deskew Alert Enabled"True" or "False"
ParameterNameValue
AUI-C2M Host
Crosstalk source"True" or "False"
Scope Noise1 to 20
Transition Time Request
  • Short
  • Long
  • Both
CTLE Search
  • Exhaustive
  • Rapid
CTLE gDC Filter File
  • All(-2 to -9 dB)
    • -2 dB
    • -3 dB
    • -4 dB
    • -5 dB
    • -6 dB
    • -7 dB
    • -8 dB
    • -9 dB
    • Custom
  • All(-2 to -11 dB)
    • -2 dB
    • -3 dB
    • -4 dB
    • -5 dB
    • -6 dB
    • -7 dB
    • -8 dB
    • -9 dB
    • -10 dB
    • -11 dB
    • Custom
  • All(-4 to -10 dB)
    • -4 dB
    • -5 dB
    • -6 dB
    • -7 dB
    • -8 dB
    • -9 dB
    • -10 dB
    • Custom
CTLE gDC2 Filter File
  • All(0 to -3 dB)
    • 0 dB
    • -0.5 dB
    • -1 dB
    • -1.5 dB
    • -2 dB
    • -2.5 dB
    • -3 dB
    • Custom
Apply DFE"True" or "False"
Target BER (1e-)/Target BER (10^-)4 to 6
Mask Width0.1 to 0.5
AUI-C2M Module
Crosstalk source"True" or "False"
Scope Noise1 to 20
Apply Filter"True" or "False"
Phase Inverted Filter For Data-"True" or "False"
C2M Module Output Mode
  • Short
  • Long
  • Both
CTLE Search
  • Exhaustive
  • Rapid
Near End CTLE gDC Filter File
  • All(-1 to -5 dB)
    • -1 dB
    • -2 dB
    • -3 dB
    • -4 dB
    • -5 dB
    • Custom
Near End CTLE gDC2 Filter File
  • All(0 to -2 dB)
    • 0 dB
    • -0.5 dB
    • -1 dB
    • -1.5 dB
    • -2 dB
    • Custom
Use Near End Best CTLE"True" or "False"
Apply Near End DFE"True" or "False"
Far End CTLE gDC Filter File
  • All(-2 to -9 dB)
    • -2 dB
    • -3 dB
    • -4 dB
    • -5 dB
    • -5 dB
    • -6 dB
    • -7 dB
    • -8 dB
    • -9 dB
    • Custom
Far End CTLE gDC2 Filter File
  • All(-1 to -3 dB)
    • -1 dB
    • -1.5 dB
    • -2 dB
    • -2.5 dB
    • -3 dB
    • Custom
Use Far End Best CTLE"True" or "False"
Apply Far End DFE"True" or "False"
Target BER (1e-)/Target BER (10^-)4 to 6
NearEnd Mask Width0.1 to 0.5
FarEnd Mask Width0.1 to 0.5
Apply CK Far End Lossy Channel"True" or "False"
Data Rate (GBd)26.5625 to 54
Table 2. Command arguments for report settings
ParameterNameValue
Report Update Mode
  • New
  • Append
  • Replace
  • ReplaceAny
Auto increment report name if duplicate"True" or "False"
Report Path

File path

Example: TEKEXP:VALUE GENERAL,"Report Path", "X:\400G-TXE\Reports\"

View Report After Generating"True" or "False"
Report Group Mode
  • Test Name
  • Test Result
Create report at the end"True" or "False"
Report Settings: Include Header In Appended Reports"True" or "False"
Report Settings: Report margin value in percentage"True" or "False"
Include user logo"True" or "False"

Returns

<NRf> or <String>

Examples

TEKEXP:VALUE GENERAL,"<ParameterName>","<Value>" command set the value for the specified general parameter.

TEKEXP:VALUE? GENERAL,"<ParameterName>" command returns the value for the specified general parameter.

Set or query the acquire parameter values

This command sets or queries the acquire parameter values of the application.

Syntax

TEKEXP:VALUE ACQUIRE,”<TestName>",”<AcquireType>”,”<ParameterName>","<ParameterValue>" (Set)

TEKEXP:VALUE? ACQUIRE,”<TestName>",”<AcquireType>”,”<ParameterName>" (Query)

Command arguments

Argument NameArgument TypeValid Values
<TestName><String>It is the test name.
<AcquireType><String>It is the acquire type.
<ParameterName><String>It is the acquire parameter name.
<ParameterValue><NRf>It is the acquire parameter value.

Returns

<Nrf>

Examples

TEKEXP:VALUE ACQUIRE,”<TestName>",”<AcquireType>”,"<ParameterName>","<ParameterValue>" command sets the value for the specified test and its acquire parameter.

TEKEXP:VALUE? ACQUIRE,”<TestName>",”<AcquireType>”,"<ParameterName>" command returns the value for the specified test and its acquire parameter.

Set or query the analyze parameter values

This command sets or queries the analyze parameter values of the application.

Syntax

TEKEXP:VALUE ANALYZE,”<TestName>","<ParameterName>","<ParameterValue>" (Set)

TEKEXP:VALUE? ANALYZE,”<TestName>","<ParameterName>" (Query)

Command arguments

Argument NameArgument TypeDescription
<TestName><String>It is the test name.
<ParameterName><String>It is the Analyze parameter name.
<ParameterValue><NRf>It is the Analyze parameter value.

Returns

<Nrf>

Examples

TEKEXP:VALUE ANALYZE,”<TestName>","<ParameterName>","<ParameterValue>" command set the value for the specified test and its analyze parameter.

TEKEXP:VALUE? ANALYZE,”<TestName>","<ParameterName>" command returns the value for the specified test and its analyze parameter.

Query the available devices in the DUT panel of the application

This command queries the list of available devices on the DUT panel as comma separated values.

Syntax

TEKEXP:LIST? DEVICE (Query)

Command arguments

DeviceDevice Type and valueDescription
<Device> <String>It is the name of the device on the DUT panel of the application.

Returns

<String>

Examples

TEKEXP:LIST? DEVICE command returns the list of available devices.

Query the available suites for the selected device

This command queries the list of available suites for the selected device as comma separated values.

Syntax

TEKEXP:LIST? SUITE (Query)

Returns

<String>

Examples

TEKEXP:LIST? SUITE command returns the list of available suites for the selected device.

Query the list of available tests of the application

This command queries the list of available tests of the application for the selected device as comma separated values.

Syntax

TEKEXP:LIST? TEST (Query)

Command arguments

Test NameString
OIF-PAM4 CEIVSR
  • DC Common Mode Output Voltage (TP0a, TP1a, TP4)
  • Diff Peak to Peak Output Voltage Tx Enabled (TP0a, TP1a, TP4)
  • AC Common Mode Output Voltage (TP0a, TP1a, TP4)
  • Transition Time (TP0a, TP1a, TP4)
  • Signal To Noise And Distortion Ratio (TP0a, TP1a, TP4)
  • Even Odd Jitter (TP0a)
  • Uncorrelated Bounded High Probability Jitter (TP0a)
  • Uncorrelated Unbounded Gaussian Jitter (TP0a)
  • Eye Width (TP1a)
  • Eye Height (TP1a)
  • Eye Linearity (TP1a)
  • Eye Symmetry Mask Width (TP4)
  • Near End Eye Width (TP4)
  • Near End Eye Height (TP4)
  • Near End Eye Linearity (TP4)
  • Near End Eye Symmetry Mask Width (TP4)
  • Far End Eye Width (TP4)
  • Far End Eye Height (TP4)
  • Far End Eye Symmetry Mask Width (TP4)
OIF-PAM4 CEI-MR
  • DC Common Mode Output Voltage
  • Diff Peak to Peak Output Voltage Tx Enabled
  • AC Common Mode Output Voltage
  • Single Ended Output Voltage
  • Signal To Noise And Distortion Ratio
  • Level Separation Mismatch Ratio
  • Linear Fit Pulse Peak
  • Steady State Voltage
  • Step size for coefficient C(-1)
  • Step size for coefficient C(0)
  • Step size for coefficient C(1)
  • Coefficient Range C(-1)
  • Coefficient Range C(0)
  • Coefficient Range C(1)
  • Even Odd Jitter
  • Jitter RMS
  • Uncorrelated J4 Jitter
OIF-PAM4 CEI-LR
  • DC Common Mode Output Voltage
  • Diff Peak to Peak Output Voltage Tx Enabled
  • AC Common Mode Output Voltage
  • Single Ended Output Voltage
  • Signal To Noise And Distortion Ratio
  • Level Separation Mismatch Ratio
  • Linear Fit Pulse Peak
  • Steady State Voltage
  • Step size for coefficient C(-2)
  • Step size for coefficient C(-1)
  • Step size for coefficient C(0)
  • Step size for coefficient C(1)
  • Coefficient Range C(-2)
  • Coefficient Range C(-1)
  • Coefficient Range C(0)
  • Coefficient Range C(1)
  • Even Odd Jitter
  • Jitter RMS
  • Uncorrelated J4 Jitter
IEEE-PAM4 AUI
  • DC Common Mode Output Voltage (TP0a, TP1a, TP4)
  • Diff Peak to Peak Output Voltage Tx Disabled (TP0a, TP1a)
  • Diff Peak to Peak Output Voltage Tx Enabled (TP0a, TP1a, TP4)
  • AC Common Mode Output Voltage (TP0a, TP1a, TP4)
  • Signaling Rate (TP0a, TP1a, TP4)
  • Signal To Noise And Distortion Ratio (TP0a)
  • Level Separation Mismatch Ratio (TP0a)
  • Linear Fit Pulse Peak (TP0a)
  • Steady State Voltage (TP0a)
  • Pre Cursor Equalization (TP0a)
  • Post Cursor Equalization (TP0a)
  • Transmitter output residual ISI (TP0a)
  • Even Odd Jitter (TP0a)
  • Uncorrelated J4 Jitter (TP0a)
  • Jitter RMS (TP0a)
  • Single Ended Output Voltage (TP1a)
  • Transition Time (TP1a, TP4)
  • Eye Height (TP1a)
  • Eye Symmetry Mask Width (TP1a)
  • Near End Eye Height (TP4)
  • Near End Eye Symmetry Mask Width (TP4)
  • Far End Eye Height (TP4)
  • Far End Eye Symmetry Mask Width (TP4)
  • Far End Precursor ISI Ratio (TP4)
IEEE-PAM4 CR4 and KR4
  • DC Common Mode Output Voltage
  • Diff Peak to Peak Output Voltage Tx Disabled
  • Diff Peak to Peak Output Voltage Tx Enabled
  • AC Common Mode Output Voltage
  • Signaling Rate
  • Signal To Noise And Distortion Ratio
  • Level Separation Mismatch Ratio
  • Linear Fit Pulse Peak
  • Steady State Voltage
  • Coefficient Range
  • OUT_OF_SYNC
  • NEW_IC PRESET1
  • NEW_IC PRESET2
  • NEW_IC PRESET3
  • Step size for coefficient C(-2)
  • Step size for coefficient C(-1)
  • Step size for coefficient C(0)
  • Step size for coefficient C(1)
  • Even Odd Jitter
  • Jitter RMS
  • Uncorrelated J3 Jitter

Returns

<String>

Examples

TEKEXP:LIST? TEST command returns the list of available tests for the selected device.

Query the available version names of the application

This command queries the list of available version names of the application for the selected device as comma separated values.

Syntax

TEKEXP:LIST? VERSION (Query)

Returns

<String>

Examples

TEKEXP:LIST? VERSION command returns the list of version names for the selected device.

Query the list of available instruments based on the specified instrument type

This command queries the list of available instruments based on the specified instrument type.

Syntax

TEKEXP:LIST? INSTRUMENT,"<InstrumentType>" (Query)

Command argument

Argument NameArgument value
<InstrumentType><String>

Returns

<String>

Examples

TEKEXP:LIST? INSTRUMENT,"Real Time Scope" command returns the list of available instruments based on the real time scope type.

Set or query the IP address of the instrument based on the specified instrument type

This command sets or queries the IP address of the instrument based on the specified instrument type.

Syntax

TEKEXP:INSTRUMENT? "<InstrumentType>" (Query)

TEKEXP:INSTRUMENT, "<InstrumentType>","<Value>" (Set)

Command argument

Argument NameArgument Type
<InstrumentType><String>
<Value><String>

TCPIP::XXX.XX.XXX.XXX::INSTR

Returns

<String>

Examples

TEKEXP:INSTRUMENT? "<InstrumentType>" command returns the IP address of the oscilloscope.

TEKEXP:INSTRUMENT, "<InstrumentType>","<value>" command sets the oscilloscope to the specified IP address.

Query the information of the generated report file

This command queries the information of the generated report file in the format "<FileSize>","<FileName>".

Pre‐requisite

A session should be run earlier and the report should be generated to get the information of the report.

Syntax

TEKEXP:INFO? REPORT (Query)

Returns

<FileSize>:: <String>

<FileName>:: <String>

Examples

TEKEXP:INFO? REPORT command returns the information of the generated report in the format ("1215”,"DUT001.mht”).

Query the information of the generated waveform files

This command queries the information of the generated waveform files in the format.

<File1Size,"File1Name”>.

If there are more than one waveform, the waveform file names are displayed with the comma separated values in the format

<File1Size,"File1Name">,<File2Size,"File2Name">.

Syntax

TEKEXP:INFO? WFM (Query)

Returns

<FileSize>:: <String>

<FileName>:: <String>

Examples

TEKEXP:INFO? WFM command returns the information of the generated waveform in the format (20000858,"X:\400G-TXE\Untitled Session\DUT001\20200916_041609\Iter1_Short Record‐length for SCOPE Period_NoSSC_DIFF.wfm”).

Query the information of the generated image files

This command queries the information of the generated image files in the format.

<File1Size,"File1Name”>.

If there are more than one image, the image file names are displayed with the comma separated values in the format

<File1Size,"File1Name">,<File2Size,"File2Name">.

Syntax

TEKEXP:INFO? IMAGE (Query)

Returns

<FileSize>:: <String>

<FileName>:: <String>

Examples

TEKEXP:INFO? IMAGE command returns the information of the generated image in the format (109058, "X:\400G-TXE\Untitled Session\DUT001\20200916_041609\Iter1_Short Record‐length for SCOPE Period_NoSSC_DIFF.png";22794,"X:\400G-TXE\UntitledSession\DUT001\20 200916_041609\ScopePeriodPlot_Iteration1WithCursor.png").

Query the active TekExpress application name

This command queries the active TekExpress application name running on the oscilloscope.

Syntax

TEKEXP:*IDN? (Query)

Returns

<String>

Examples

TEKEXP:*IDN? command returns the active TekExpress application name running on the oscilloscope.

Set or query the DUTID of application

This command sets or queries the DUTID of the application.

Syntax

TEKEXP:VALUE DUTID,"<Value>" (Set)

TEKEXP:VALUE? DUTID (Query)

Command arguments

Argument NameArgument Type
<Value><String>

Returns

<String>

Examples

TEKEXP:VALUE DUTID,"DUT001" command sets the DUTID of the application to DUT001.

TEKEXP:VALUE? DUTID command returns the DUTID of the application.

Sets or query the acquire mode status

This command sets or queries the acquire mode status.

Syntax

TEKEXP:ACQUIRE_MODE <Mode> (Set)

TEKEXP:ACQUIRE_MODE? (Query)

Command arguments

Argument NameArgument value
<Mode>
  • LIVE
  • PRE‐RECORDED

Returns

LIVE | PRE‐RECORDED

Examples

TEKEXP:ACQUIRE_MODE LIVE command sets the acquire mode to the Live mode.

TEKEXP:ACQUIRE_MODE? command returns the current acquire mode.

Set or query the execution mode status

This command sets or queries the execution mode status.

Syntax

TEKEXP:MODE <Mode> (Set)

TEKEXP:MODE? (Query)

Command arguments

Argument NameArgument value
<Mode>
  • COMPLIANCE
  • USER‐DEFINED

Returns

COMPLIANCE | USER‐DEFINED

Examples

TEKEXP:MODE COMPLIANCE command sets the execution mode to the compliance mode.

TEKEXP:MODE? command returns the current execution mode.

Generate the report for the current session

This command generates the report for the current session.

Syntax

TEKEXP:REPORT GENERATE(Set)

Arguments

N/A

Examples

TEKEXP:REPORT GENERATE command generates the report for the current session.

Query the value of specified report header field in the report

This command queries the value of specified report header field in the report.

Syntax

TEKEXP:REPORT? ”<Device Field>” (Query)

Command arguments

Argument NameArgument Type
<Device Field>

Device field is the header name of each field in the setup information section of the report.



<String>

Returns

<String>

Examples

TEKEXP:REPORT? "DUT ID" command returns the value of DUT ID field in the report.

Query the value of specified result detail available in report summary/details table

This command queries the value of specified result detail available in report summary/details table.

Syntax

TEKEXP:RESULT? "<TestName>" (Query)

TEKEXP:RESULT? "<TestName>","<ColumnName>" (Query)

TEKEXP:RESULT? "<TestName>","<ColumnName>",<RowNumber> (Query)

Command arguments

Argument NameArgument Type
<TestName>

It is the test name of which the details are required in the report.

<String>
<ColumnName>

It is the column header name of which the details are required in the report.

<String>
<RowNumber>

It is the row number of which the details are required in the report.

<String>

Returns

<String>

Examples

TEKEXP:RESULT? "<TestName>" will return the pass fail status of test.

TEKEXP:RESULT? "<TestName>","<ColumnName>" will return all the row values of specific column for the test with comma separated values.

TEKEXP:RESULT? "<TestName>","<ColumnName>",<RowNumber> will return the column value of specified row number.

Restore the setup to default settings

This command restores the setup to default settings.

Syntax

TEKEXP:SETUP Default(Set)

Arguments

N/A

Examples

TEKEXP:SETUP Default command restores the setup to default settings.

Save the setup

This command saves the setup.

Syntax

TEKEXP:SETUP Save(Set)

Examples

TEKEXP:SETUP Save command saves the setup.

Save the settings to a specified session

This command saves the settings to a specified session.

Syntax

TEKEXP:SETUP Save,"<SessionName>"

Command arguments

Argument NameArgument value
<SessionName><String>

Examples

TEKEXP:SETUP Save,"<SessionName>" command saves the settings to a specified session.

Open the setup from a specified session

This command opens the setup from a specified session.

Syntax

TEKEXP:SETUP Open,"<SessionName>"(Set)

Command arguments

Argument NameArgument value
<SessionName><String>

Examples

TEKEXP:SETUP Open,"<SessionName>" command opens the setup from a specified session.

Query the current setup file name

This command queries the current setup file name.

Syntax

TEKEXP:SETUP? CURRENT (Query)

Returns

<String>

Examples

TEKEXP:SETUP? CURRENT command returns the current setup file name.

Run/stop/pause/resume the selected measurements execution in the application

This command run/stop/pause/resume the selected measurements execution in the application.

Syntax

TEKEXP:STATE <operation mode> (Set)

Command arguments

Argument NameArgument value
<operation mode>
  • RUN
  • STOP
  • PAUSE
  • RESUME

Returns

RUN | STOP | PAUSE | RESUME

Examples

TEKEXP:STATE RUN command runs the execution for the selected measurements.

Query the current measurement execution status

This command queries the current measurement execution status.

Syntax

TEKEXP:STATE? (Query)

Returns

RUNNING | PAUSED | WAIT | ERROR | READY

Examples

TEKEXP:STATE? command returns the current measurement execution status.

Query whether the current setup is saved or not saved

This command queries whether the current setup is saved or not saved.

Syntax

TEKEXP:STATE? SETUP (Query)

Returns

Saved or Not‐Saved

Examples

TEKEXP:STATE? SETUP command returns whether the current setup is saved or not saved.

Exit or close the application

The command exits or close the application

Syntax

TEKEXP:EXIT(Set)

Examples

TEKEXP:EXIT command close the application.

Query the status of the previous command execution

This command queries whether the previous command execution is completed successfully.

Syntax

TEKEXP:*OPC? (Query)

Returns

{0 | 1} or {True | False}

1 or True indicates that command execution is successful.

0 or False indicates that command execution is failed.

Examples

TEKEXP:*OPC? command returns whether the previous command operation is completed successfully.

Query the last error occurred

This command queries the last error occurred.

Syntax

TEKEXP:LASTERROR? (Query)

Returns

<String>

Examples

TEKEXP:LASTERROR? command returns the last error occurred.

Set or query the popup details

This command sets or queries the popup details.

Syntax

TEKEXP:POPUP? (Query)

TEKEXP:POPUP "<PopupResponse>" (Set)

Command arguments

Argument NameArgument value
<PopupResponse>
  • Yes
  • No

Returns

The pop‐up details return in the following format:

"<Tittle>","<message>","<response1>,<response2>".

Where,

<Tittle> :: <String>

<message> :: <String>

<response1>,<response2> :: <String>

Examples

TEKEXP:POPUP? command returns the popup details in following format ": "Do you really want to exit TekExpress?";Responses: "Yes, No".

TEKEXP:POPUP "Yes" command sets the popup response to Yes.

Sets or query the limit values in the limits editor window

This command sets or queries the limit values in the limits editor window.

Syntax

TEKEXP:VALUE LIMIT,<TestName>,<LimitHeader>,<Value1>,<CompareString>,<Value2>(Set)

TEKEXP:VALUE? LIMIT,<TestName>,<LimitHeader> (Query)

Returns

<String> or <NRf>

Examples

TEKEXP:VALUE LIMIT,<TestName>,<LimitHeader>,<Value1>,<CompareString>,<Value2> command sets the limits value for the specified testname and limit header.

TEKEXP:VALUE? LIMIT,<TestName>,<LimitHeader> command returns the limits value for the specified testname and limit header.

Set or query the waveform file recalled for the specified test name and acquire type

This command set or queries the waveform file recalled for the specified test name and acquire type.

If there are more than one waveform, the waveform file names are displayed with the symbol "$" separated values in the format

<WaveformFileName1$ WaveformFileName2>.

Syntax

TEKEXP:VALUE WFMFILE,<TestName>,<AcquireType>,<WaveformFileName> (Set)

TEKEXP:VALUE? WFMFILE,<TestName>,<AquireType> (Query)

Returns

<String>

Examples

TEKEXP:VALUE WFMFILE,<TestName>,<AquireType>,<WaveformFileName> command recalls the sepcified waveform file for the specified testname and acquire type.

TEKEXP:VALUE? WFMFILE,<TestName>,<AquireType> command returns the waveform file name recalled for the specified testname and acquire type.

Set or query the enable/disable status of Verbose function

This command sets or queries the enable/disable status of Verbose function.

Syntax

TEKEXP:VALUE VERBOSE,"<Value>" (Set)

TEKEXP:VALUE? VERBOSE (Query)

Arguments

Argument NameArgument value
<Value>{True | False} or {1 | 0}

It represents enabled or disabled.

Where,
  • True or 1 - enabled
  • False or 0 - disabled

Returns

{True | False} or {0 | 1}

Examples

TEKEXP:VALUE VERBOSE,"<Value>" command enable or disable the Verbose function.

TEKEXP:VALUE? VERBOSE command returns the enable or disable status of Verbose function.

Query the enable or disable status of Continuous run function.

This command queries the enable or disable status of Continuous run function.

Syntax

TEKEXP:VALUE? GENERAL,"Enable Continuous Run" (Query)

Returns

{True | False} or {0 | 1}

Where,

1 or True indicates that the continuous run function is enabled.

0 or False indicates that the continuous run function is disabled.

Examples

TEKEXP:VALUE? GENERAL,"Enable Continuous Run" command returns the enable or disable status of continuous run function.

Set or query the enable/disable status of Continuous Run function

This command sets or queries the enable/disable status of Continuous Run function.

Syntax

TEKEXP:VALUE ContinuousRun,"<Value>" (Set)

TEKEXP:VALUE? ContinuousRun (Query)

Arguments

Argument NameArgument value
<Value>{True | False} or {1 | 0}

It represents enabled or disabled.

Where,
  • True or 1 - enabled
  • False or 0 - disabled

Returns

{True | False} or {0 | 1}

Examples

TEKEXP:VALUE? ContinuousRun command returns the enable or disable status of Continuous run function.

TEKEXP:VALUE ContinuousRun,"<Value>" command enable or disable the Continuous run function.

Set or query the continuous run duration time value

This command sets or queries the continuous run duration time value.

Syntax

TEKEXP:VALUE? ContinuousRun_Duration (Query)

TEKEXP:VALUE ContinuousRun_Duration,"<Value>" (Set)

Arguments

Argument NameArgument value
<Value>Infinite | hh:mm

Infinite sets the radio on button to infinite.

hh:mm sets the continuous run duration to the specified time in hours and minutes. The minimum time duration you can set is 00:30.

Returns

Infinite | hh:mm

Examples

TEKEXP:VALUE? ContinuousRun_Duration command returns the continuous run duration time value.

TEKEXP:VALUE ContinuousRun_Duration,"<Value>" command sets the continuous run duration time value.

Set or query the session create option in the continuous run function

This command sets or queries the option for session creation in the continuous run function.

Syntax

TEKEXP:VALUE? ContinuousRun_RunSessionOptions (Query)

TEKEXP:VALUE ContinuousRun_RunSessionOptions,"Value" (Set)

Arguments

Argument NameArgument value
<Value>NewSession | SameSession_ClearResults

NewSession - creates new session for each run.

SameSession_ClearResults - Clears the test results of the current session and starts the test execution. The session results will be added in the same session, by erasing the previous run results.

Returns

NewSession | SameSession_ClearResults

Examples

TEKEXP:VALUE? ContinuousRun_RunSessionOptions command returns the option for session creation in the continuous run function.

TEKEXP:VALUE ContinuousRun_RunSessionOptions,"Value" command sets the option for session creation in the continuous run function.

Set or query the View report after generating option status

This command sets or queries the enable/disable status of the View report after generating function.

Syntax

TEKEXP:VALUE? GENERAL,"View Report After Generating" (Query)

TEKEXP:VALUE GENERAL,"View Report After Generating",<value> (Set)

Arguments

Argument NameArgument value
<Value>{True | False} or {1 | 0}

It represents enabled or disabled.

Where,
  • True or 1 - enabled
  • False or 0 - disabled

Returns

{True | False} or {0 | 1}

Examples

TEKEXP:VALUE? GENERAL,"View Report After Generating" command returns the enable or disable status of view report after generating option.

TEKEXP:VALUE GENERAL,"View Report After Generating",<value> command enable or disable the view report after generating option.

Returns the report as XML string

This command returns the report as XML string.

Syntax

TEKEXP:REPORTASXML? (Query)

Returns

<String>

Examples

TEKEXP:REPORTASXML? command returns the report XML string.

Copies all the images from current run session to the given destination location

This command copies all the images from current run session to the given destination location.

Syntax

TEKEXP:COPYIMAGES <DestinationPath> (Set)

Command argument

<DestinationPath> :: <String>

Returns

NA

Examples

TEKEXP:COPYIMAGES C:\Temp command copies all the images from current run session to the mentioned location.

Selects the specified test(s) and deselect all other tests

This command selects the specified test(s) and deselect all other tests.

Syntax

TEKEXP:SELECTID <”TestID”> (Set)

Command argument

Argument NameArgument value
TestID String

Returns

NA

Examples

TEKEXP:SELECTID "11101"This command select the test associated with the ID and deselects all other tests in the application.

TEKEXP:SELECTID “11101,11102”This command selects the tests associated with the IDs and other tests will be deselected.

Returns the complete information about the selected test

This command returns the complete information about the selected test.

The information includes application name, TestID, Device selected, Suite selected, version, Test name, Test description.

Syntax

TEKEXP:TESTINFO? (Query)

Returns

<String>

Examples

TEKEXP:TESTINFO? This command returns the following details:

<TekExpress> <Test Id="11101" Device="TX-Device" Suite="Group1" Version="Spec 1.0" Name="Algorithm Library Measurement" Description="This is Algorithm Library measurement test. Refer Section-B of TekExpress SampleApp Development Guide for more details.

Set the default session

Sets the application configurations to default value.

Syntax

TEKEXP:SESSION DEFAULT (set)

Examples

TEKEXP:SESSION DEFAULT, sets the application configurations to default value.

Save the run/config sessions

Enter the name to save/config the session.

Syntax

TEKEXP:SESSION SAVE,“Session Name” (set)

Command arguments

Argument NameArgument value
<Session Name><String>

Examples

TEKEXP:SESSION SAVE,“Session Name” saves the session.

Load the run/config session

Load the selected config/run session.

Syntax

TEKEXP:SESSION LOAD, “Session Name” (set)

Command arguments

Argument NameArgument value
<Session Name><String>

Examples

TEKEXP:SESSION LOAD, “Session Name”, load the selected config/run session.

Delete the run/config session

Deletes the selected config/run session.

Syntax

TEKEXP:SESSION DELETE, "Session1, Session2" (set)

Command arguments

Argument NameArgument value
<Session Name><String>

Examples

TEKEXP:SESSION DELETE, "Session1, Session2", deletes the selected config/run session.

Run the run/config saved session

Run the selected config/run session.

Syntax

TEKEXP:SESSION RUN, “Session Name’s separated by comma” (set)

Command arguments

Argument NameArgument value
<Session Name><String>
Session Name’s separated by comma (to run the multiple run sessions)<String>

Examples

TEKEXP:SESSION RUN, “Session Name’s separated by comma”, runs the selected config/run session.

Query the available list in the run/config session

Returns the list of available config/run session.

Syntax

TEKEXP:SESSION? LIST

Returns

Returns the list of available config/run session.

Examples

TEKEXP:SESSION? LIST, returns the list of available config/run session.

Query the current run/config session

Returns the selected config/run session.

Syntax

TEKEXP:SESSION? CURRENT

Returns

Returns the selected config/run session.

Examples

TEKEXP:SESSION? CURRENT, returns the selected config/run session.

Override the run/config session

Overrides the selected config/run session.

Syntax

TEKEXP:SESSION SAVE,"SessionName", "True" (set)

Command arguments

Argument NameArgument TypeArgument Value
<Session Name><String>{True | False} or {1 | 0}

It represents enabled or disabled.

Where,
  • True or 1 - enabled
  • False or 0 - disabled

Returns

{True | False} or {0 | 1}

Examples

TEKEXP:SESSION SAVE,"SessionName", "True", overrides the selected config/run session.

Examples

This section provides the examples for the SCPI commands.

ExampleDescription
TEKEXP:*IDN?\nIt returns the active TekExpress application name running on the oscilloscope.
TEKEXP:*OPC?\nIt returns the last command execution status.
TEKEXP:ACQUIRE_MODE PRE-RECORDED\nIt sets the acquire mode as pre-recorded.
EKEXP:ACQUIRE_MODE?\nIt returns LIVE when acquire mode is set to live.
TEKEXP:EXPORT REPORT\nIt returns the report file in bytes. This can be written into another file for further analysis.
TEKEXP:EXPORT IMAGE,"ImageA.png"\nIt returns the image file in bytes. This can be written into another file for further analysis.
TEKEXP:EXPORT WFM,"WaveformA.wfm"\nIt returns the waveform file in bytes. This can be written into another file for further analysis.
TEKEXP:INFO? REPORT\nIt returns “100,”ReportFileName.mht”", when 100 is the filesize in bytes for the filename ReportFileName.
TEKEXP:INFO? WFM\nIt returns “100,“WfmFileName1.wfm”";“200,“WfmFileName2.wfm”" when 100 is the filesize in bytes for the filename WfmFileName1.wfm and 200 is the filesize in bytes for the filename WfmFileName2.wfm.
TEKEXP:INFO? IMAGEIt returns the image file name.
TEKEXP:INSTRUMENT "Real Time Scope",DPO77002SX ( GPIB8::1::INSTR )\nIt sets the instrument value as DPO77002SX (GPIB8::1::INSTR) for the selected instrument type Real Time Scope.
TEKEXP:INSTRUMENT? “Real Time Scope”\nIt returns "IDPO77002SX (GPIB8::1::INSTR), when DPO77002SX (GPIB8::1::INSTR)" is the selected instrument for the instrument type Real Time Scope.
TEKEXP:LASTERROR?\nIt returns ERROR: INSTRUMENT_NOT_FOUND, when no instrument is found.
TEKEXP:LIST? DEVICE\nIt returns "TX-Device,RX-Device" when TX-Device, RX-Device are the available device.
TEKEXP:LIST? INSTRUMENT,"Real Time Scope"\nIt returns "DPO77002SX (GPIB8::1::INSTR),MSO73304DX (TCPIP::134.64.248.91::INSTR)" when DPO72504D (GPIB8::1::INSTR), MSO73304DX (TCPIP::134.64.248.91::INSTR) are the list of available instruments.
TEKEXP:MODE COMPLIANCE\nIt sets the execution mode as compliance.
TEKEXP:MODE?\nIt returns COMPLIANCE when the execution mode is compliance.
TEKEXP:POPUP “OK”\nIt sets OK as the response to active popup in the application.
TEKEXP:POPUP?\nIt returns "OK", when OK is the active popup information shown in the application.
TEKEXP:REPORT GENERATE\nIt generates report for the current session.
TEKEXP:REPORT? “Scope Information”\nIt returns "DPO73304SX" when DPO73304SX is the scope model.
TEKEXP:REPORT? “DUT ID”\nIt returns "DUT001" when DNI_DUT001 is the DUT ID.
TEKEXP:RESULT? "Period using SCOPE (Acquire-Analyze Combined)"\nIt returns Pass when the test result is Pass.
TEKEXP:RESULT? "Period using SCOPE (Acquire-Analyze Combined)","Margin",1\nIt returns "L:-50.000ps H:2000.000ps" when L:-50.000ps H:2000.000ps is the value.
TEKEXP:SELECT DEVICE, TX_Device, TRUE\nIt selects TX_Device
TEKEXP:SELECT? DEVICE\nIt returns "TX-Device" when TX-Device is the selected device type.
TEKEXP:SETUP DEFAULT\nIt restores the application to default setup.
TEKEXP:STATE STOP\nIt stops the test execution.
TEKEXP:STATE?\nIt returns as READY when the application is ready to run next measurement.
TEKEXP:STATE? SETUP\nIt returns as NOT_SAVED when the current setup is not saved.

References

Application directories

You can find the application files at C:\Program Files\Tektronix\TekExpress 400G-TXE. The application directory and associated files are organized as follows:



The following table lists the default directory names and their usage:
Table 1. Application directories and usage
Directory names Usage
Bin Contains application libraries
Compliance Suites Contains test suite specific files
Examples Contains various support files
ICP Contains instrument and application specific interface libraries
Images Contains images of the application
Lib Contains utility files specific to the application
LicensesContains all the license files
Report Generator Contains style sheets for report generation
Tools Contains instrument and application specific files

File name extensions

The TekExpress 400G-TXE software uses the following file name extensions:

Table 1. File name extension
File name extensionDescription
*.TekXApplication session files (the extensions may not be displayed)
*.pyPython sequence file.
*.xml

Test-specific configuration information (encrypted) files.

Application log files

*.csv

Test result reports

Plot data

*.mht

Test result reports (default)

Test reports can also be saved in HTML format

*.pdf

Test result reports

Application help document

*.xsltStyle sheet used to generate reports
*.pngCaptured images
.wfmTest waveform file

View test-related files

Files related to tests are stored in My Documents\TekExpress 400G-TXE\Untitled session folder. Each test setup in this folder has both a test setup file and a test setup folder, both with the test setup name. The test setup file is preceded by the TekExpress icon.

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 also has a folder and file pair, both named for the test session using the naming convention (date)_(time). Each session file is stored outside its matching session folder:

Each session folder contains image files of any plots generated from running the test session. If you selected to save all waveforms or ran tests using prerecorded waveform files, these are included here.

The first time you run a new, unsaved session, the session files are stored in the Untitled Session folder located at X:\TekExpress 400G-TXE. When you name and save the session, the files are placed in a folder with the name that you specify. A copy of the test files stay in the Untitled Session folder until you run a new test or until you close the application.

Parameters

About application parameters

This section describes the 400G-TXE application parameters, and includes the default menu settings.

The parameters for the menus, and options list the selections available for each and include the default values.

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