Teledyne LeCroy. Teledyne LeCroy MOI for DisplayPort PHY CTS 1.2b Source Testing

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1 Teledyne LeCroy DisplayPort Standard April, 2016 Teledyne LeCroy MOI for DisplayPort PHY CTS 1.2b Source Testing This document is provided "AS IS" and without any warranty of any kind, including, without limitation, any expressed or implied warranty of non-infringement, merchantability or fitness for a particular purpose. In no event shall VESA or any member of VESA be liable for any direct, indirect, special, exemplary, punitive, or consequential damages, including, without limitation, lost profits, even if advised of the possibility of such damages. This material is provided for reference only. VESA does not endorse any vendor s equipment, including equipment outlined in this document. DisplayPort Test Implementation Group 1 Teledyne LeCroy MOI Draft1

2 TABLE OF CONTENTS Teledyne LeCroy MODIFICATION RECORD 3 REFERENCES 5 ACKNOWLEDGEMENTS 5 List of Figures 6 Source PHY Tests (CTS1.2b Section 3) 7 1. Introduction 7 2. Test Pre-test Procedures 7 3. PHY CTS 1.2b Source Testing Overview EYE Diagram Testing Non Pre-Emphasis Level Verification Testing Pre-Emphasis Level Verification and Maximum Differential Pk-Pk Output Voltage Inter-Pair Skew Test Non ISI Jitter Total Jitter (TJ) and Random Jitter (RJ/DJ) Main Link Frequency Spread Spectrum Modulation Frequency (if DUT supports SSC) Spread Spectrum Modulation Deviation (if DUT supports SSC) Dual-mode TMDS Clock (if DUT supports Dual-mode) Dual-mode EYE Diagram (if DUT supports Dual-mode) 7 4. Test Objective 8 5. Test Conditions 8 6. Required Equipment for PHY CTS 1.2b Source Testing LeCroy Oscilloscope (13 GHz or above for testing of all bit rates.) Software Option Requirements QualiPHY DP Automation SW VESA Approved Test Fixtures Unigraf DPR DP Source Test Setup Connecting to the DUT for testing (Referring to Figure 6) Running the DisplayPort Compliance Tests RBR/HBR/HBR2 Measurements RBR/HBR/HBR2 Measurements if the DUT supports Automation RBR/HBR/HBR2 Measurements without Automation Running Compliance Testing with automation and a switch matrix Viewing, Saving and Reporting RBR/HBR/HBR2 Compliance Test Results Viewing RBR/HBR/HBR2 Compliance Test Results Dual Mode Measurements (For DUTs that support Dual-Mode) Connecting to the DUT for testing (Referring to Figure 8) Dual Mode (DP++) Connection Diagram Dual Mode (DP++) Test Procedure Saving Dual Mode Test Results Manchester AUX Channel EYE Test Manchester AUX Channel EYE Test Connection Diagram Manchester AUX Channel EYE Test Connection Procedure Saving AUX Channel EYE Test Results. 26 DisplayPort Test Implementation Group 2 Teledyne LeCroy MOI Draft1

3 MODIFICATION RECORD April 5, 2016 Updated images to match latest version (8.0.0.x) of the QualiPHY compliance test script February 10 th, 2015 Draft 1 Initial Draft Submitted to VESA Test Implementation Group DisplayPort Test Implementation Group 3 Teledyne LeCroy MOI Draft1

4 INTRODUCTION This Method of Implementation describes the procedures to perform the DP Source tests as required by the VESA DisplayPort Logo Compliance Program using the Teledyne LeCroy SDA 8 Zi-A Series Serial Data Analyzer Oscilloscopes (or equivalent) by Teledyne LeCroy in conformance with the DP1.2b PHY Compliance Test Specification (CTS). Source tests are required to qualify a Source product or silicon building block for Logo certification and listing on the DP Integrators List. Formally, each test description in the CTS contains the following sections: Test Objective Interoperability statement Test conditions Measurement requirements and Pass/fail criteria This MOI reduces the CTS test description to practice using the specified test equipment and procedures. DisplayPort Test Implementation Group 4 Teledyne LeCroy MOI Draft1

5 REFERENCES The following documents are referenced in this text: VESA DP PHY CTS Revision 1.2b November 26 th, 2012 This document is available to VESA members via the VESA workzone. ACKNOWLEDGEMENTS The people have contributed to the creation and maintenance of this document: Mike Engbretson (Author/Editor) Granite River Labs (GRL), Inc. Alan Blankman (Contributor) Teledyne LeCroy Inc. Please send feedback on this document to or contact TeledyneLeCroy s Customer Care Center at 800-5LECROY. DisplayPort Test Implementation Group 5 Teledyne LeCroy MOI Draft1

6 List of Figures Figure 1: Teledyne LeCroy SDA 8 Zi-A Series, or WaveMaster 8Zi-A series with SDAIII or SDAIII-LinQ and QPHY-DP option Figure 2: QualiPHY DisplayPort Software Figure 3: Wilder DP Plug Adapters with 6-pin Low Speed Connectors Figure 4: LUXSHARE-ICT DP Plug Adaptors Figure 5: AUX Channel Controller Examples Figure 6: DUT Connection Example for DP Testing Figure 7: Running the DP Compliance Application Figure 8: Configuration Menu Selection Figure 9: Configuration Menu Figure 10: Test Selection Menu Figure 11: Variable Setup Menu Figure 12: Start the Tests Figure 13: Enable Automation Unchecked for Manual DUT Control Figure 14: Configuring for 4 Lane testing using Switch Matrix Figure 15: 4 Lane test setup using Switch Matrix Figure 16: Report Generator Window Figure 17: Report Generator Selection Figure 18: Wilder AUX Control Board used for Dual Mode Testing Figure 19: Dual Mode (DP++) Connection Diagram Figure 20: Dual Mode Tests Selection Figure 21: Starting Dual Mode Tests Figure 22: Manchester AUX Channel EYE Setup Figure 23: Manchester AUX Channel EYE Test Selection Figure 24: Starting Manchester AUX Channel EYE Tests DisplayPort Test Implementation Group 6 Teledyne LeCroy MOI Draft1

7 Source PHY Tests (CTS1.2b Section 3) 1. Introduction This MOI (Method of Implementation) provides the test procedures for testing DisplayPort Source to the DP 1.2b Compliance Test Specification (CTS). The purpose of the document is to provide the approved test equipment, test connections and setup, and procedures for the DP1.2 compliance program. Review and approval of compliance test procedures for DisplayPort is the responsibility of the VESA Test Implementation Subgroup. The test procedures in this document are only the Normative (or required) tests in the DP 1.2b CTS. For informational tests, refer to the test equipment vendor s documentation. 2. Test Pre-test Procedures Prior to making any measurements, the following steps must be taken to assure accurate measurements: Allow a minimum of 20 minutes warm-up time for oscilloscope. Teledyne LeCroy oscilloscope calibrations are valid over a specific temperature range even after a power cycle so the oscilloscope does not have to be re-calibrated before every test device or every day. If using probes, perform the probe calibration defined for the specific probes being used. Make sure you use a torque wrench to make all SMA connections. 3. PHY CTS 1.2b Source Testing Overview This section describes the procedure for testing the DisplayPort Source electrical parameters. This testing is required for all ports on a device under test. The DP electrical parameters are as specified by Section 3 of the PHY CTS 1.2b. The CTS is available to VESA members at Teledyne LeCroy offers probing and automation software used for testing DisplayPort, which is used for this procedure. This document covers the following normative PHY CTS 1.2b tests. (Note that version x of the compliance test software described in this document also performs measurements for the informative tests, 3.5 and 3.10, and measurements on HBR3 signals that as of the publication date of this document are not yet covered by an official compliance test specification.) 3.1. EYE Diagram Testing 3.2. Non Pre-Emphasis Level Verification Testing 3.3. Pre-Emphasis Level Verification and Maximum Differential Pk-Pk Output Voltage 3.4. Inter-Pair Skew Test Non ISI Jitter Total Jitter (TJ) and Random Jitter (RJ/DJ) Main Link Frequency Spread Spectrum Modulation Frequency (if DUT supports SSC) Spread Spectrum Modulation Deviation (if DUT supports SSC) Dual-mode TMDS Clock (if DUT supports Dual-mode) Dual-mode EYE Diagram (if DUT supports Dual-mode) 8.1. AUX Manchester Channel EYE Test DisplayPort Test Implementation Group 7 Teledyne LeCroy MOI Draft1

8 4. Test Objective Refer to the DisplayPort PHY CTS 1.2b for detailed test objectives for each test. Each section of the CTS links back to the DisplayPort 1.2a Standard. 5. Test Conditions The PHY CTS describes in detail the test requirements and algorithms required for meeting the specification. The following table summarizes the test conditions for the tests in the PHY CTS. Test ID RBR (1.62Gb/s) HBR (2.7Gb/s) HBR2 (5.4Gb/s) 3.1 Eye Diagram Test Test Point TP2 TP2 TP3_Eq Pattern PRBS-7 PRBS Bit HBR2 Compliance Eye Pattern Swing/Pre-Emphasis /PostCursor2 2/0/0 2/0/0 Provided by DUT Owner for Passing Condition SW Channel NA NA 0 Length & Worst Case SSC On and Off if DUT Supports On and Off if DUT Supports On and Off if DUT Supports 3.2 Non-Pre-Emphasis Level Test Point TP2 TP2 TP2 Pattern PRBS-7 PRBS-7 80 Bit PLTPAT Swing/Pre-Emphasis /PostCursor2 All/0/0 All/0/0 All/0/0 SSC Both On/Off if DUT Supports Both On/Off if DUT Supports Both On/Off if DUT Supports Pre-Emphasis Level Maximum Differential Pk-Pk Output Voltage Test Point TP2 TP2 TP2 Pattern PRBS-7 PRBS-7 80 Bit PLTPAT Swing/Pre-Emphasis /PostCursor2 All/All/0 All/All/0 All/All/0 SSC On and Off if DUT Supports On and Off if DUT Supports On and Off if DUT Supports 3.4 Inter-pair Skew Bit Rate Highest Bit Rate Supported Test Point TP2 Pattern PRBS-7 or DUT dependent custom pattern Swing/Pre-Emphasis /PostCursor2 2/0/0 SSC On and Off if DUT Supports On and Off if DUT Supports On and Off if DUT Supports 3.11 Non-ISI Jitter Test Point TP2 TP2 NA Pattern PRBS-7 PRBS-7 NA Swing/Pre-Emphasis /PostCursor2 All/0/0 All/0/0 NA SSC On and Off if DUT Supports On and Off if DUT Supports NA Total (TJ) and Deterministic (DJ) Jitter Test Point TP2 TP2 TP3_Eq Pattern PRBS-7 PRBS Bit HBR2 Compliance Eye Pattern DisplayPort Test Implementation Group 8 Teledyne LeCroy MOI Draft1

9 Swing/Pre-Emphasis /PostCursor2 2/0/0 2/0/0 Provided by DUT Owner for Passing Condition SW Channel NA NA 0 Length & Worst Case SSC On and Off if DUT Supports On and Off if DUT Supports On and Off if DUT Supports HBR2 D10.2 TJ/RJ/DJ Test Point NA NA TP3_Eq Pattern NA NA D10.2 Swing/Pre-Emphasis /PostCursor2 NA NA NA SW Channel NA NA 0 Length & Worst Case SSC NA NA On and Off if DUT Supports 3.14 Main Link Frequency Test Point TP2 TP2 TP2 Pattern D10.2 D10.2 D10.2 Swing/Pre-Emphasis /PostCursor2 2/0/0 2/0/0 2/0/0 SSC On and Off if DUT Supports On and Off if DUT Supports On and Off if DUT Supports 3.15 SSC Modulation Frequency NA if SSC not supported NA if SSC not supported NA if SSC not supported 3.16 SSC Modulation Deviation Test Point TP2 TP2 TP3_Eq Pattern D10.2 D10.2 D10.2 Swing/Pre-Emphasis /PostCursor2 2/0/0 2/0/0 2/0/0 SSC On On On 3.18 Dual Mode TMDS Clock 3.19 Dual Mode Eye Diagram Test Point TP2 Pattern TMDS (Random Output) TMDS Clock Rate MHz Table 1 1.2b PHY CTS Source Test Conditions 6. Required Equipment for PHY CTS 1.2b Source Testing The following equipment is required for DisplayPort Source Testing: 1 ea. Teledyne LeCroy WaveMaster 8 Zi-A or SDA 8 Zi-A Oscilloscope (13GHz and above for all tests, 8GHz for RBR and HBR tests) with the following software: o QualiPHY DisplayPort Compliance Test Software 4 ea. SMA Cables (See Section 6.3) o Alternatively, lanes can be tested one or two at a time using 12 SMA cables automated with the Mini-Circuits model USB-4SPDT-A18 RF switch matrix. 1 ea. Wilder, Luxshare-ICT, or equivalent VESA approved DP Test Adapter. o Note: If the DUT supports Dual Mode, then a 6-pin Low Speed Connector is required on the fixture. For Example: Wilder DPI-TPA-P Adapter. This will be used for Dual Mode testing later in this MOI. If Automating Source Testing through AUX Control, use the following. Alternatively, the DUT s Source settings can be set manually. o 1 ea. DP AUX Adapter Board (Wilder DPI-TPA-A for example) with: 2 ea. SMA Cables to connect AUX from Test Adapter to AUX Adapter board. (Some adapters include these cables) o 1 ea. Unigraf DPR ea. DP Cable to connect to the DPR-100 to the AUX adapter board 2 ea. High Impedance Probe(For Aux Channel Tests) DisplayPort Test Implementation Group 9 Teledyne LeCroy MOI Draft1

10 6.1. LeCroy Oscilloscope (13 GHz or above for testing of all bit rates.) A WaveMaster 8 Zi-A series or SDA 8 Zi-A series oscilloscope with 13 GHz oscilloscope is required for performing HBR2 tests. If only RBR and HBR tests are performed, an 8 GHz oscilloscope is required Software Option Requirements The oscilloscope needs the following option codes SDA3 or SDA3-LINQ. This is included on SDA 8 Zi-A series oscilloscopes, but not on WaveMaster 8 Zi-Z. The part number to enable SDA3 option is WM8ZI-SDAIII, which enables single-lane serial data analysis testing. WM8ZI-SDAIII-LINQ can be used, which enables 4 lanes of analysis. EYEDR2. This is required for HBR Worst Case tests. It is not included standard. MANCHESTER-BUS. This enables the Manchester decoder option, which is required for AUX Channel tests. Figure 1: Teledyne LeCroy SDA 8 Zi-A Series, or WaveMaster 8Zi-A series with SDAIII or SDAIII-LinQ and QPHY-DP option 6.3. QualiPHY DP Automation SW The QualiPHY-DisplayPort SW automates all the measurements in the PHY CTS. In two port TBT devices, Reduced Bit Rate (RBR 1.62Gb/s), High Bit Rate (HBR 2.7Gb/s), and High Bit Rate 2 (HBR2 5.4Gb/s). The initial released version of the DP script is DisplayPort Test Implementation Group 10 Teledyne LeCroy MOI Draft1

11 6.4. VESA Approved Test Fixtures Figure 2: QualiPHY DisplayPort Software The following diagram shows approved test fixtures for DP Source testing as of the writing of this document. Refer to the following website for a full list of approved fixtures: Approved Mini-DP Fixtures: Wilder: mdp-tpa-p or RevA DPI-TPA-P with DPI-TPA-A Aux Control Board LUXSHARE-ICT: mdp-tpa-p-5 Approved Standard DP Fixtures: Wilder: DP-TPA-P or RevA mdpi-tpa-p with DPI-TPA-A Aux Control Board LUXSHARE-ICT: DP-TPA-P-5 DisplayPort Test Implementation Group 11 Teledyne LeCroy MOI Draft1

12 Figure 3: Wilder DP Plug Adapters with 6-pin Low Speed Connectors mdp-tpa-p-5 DP-TPA-P Unigraf DPR-100 Figure 4: LUXSHARE-ICT DP Plug Adaptors 7. DP Source Test Setup Figure 5: AUX Channel Controller Examples The following diagram shows the connections for mdp DUT, Fixture, Oscilloscope, and AUX Channel controller for automated testing for simultaneous connection of four channels. Connection for standard DP testing will follow the same connection diagram only with the appropriate adapter. DisplayPort Test Implementation Group 12 Teledyne LeCroy MOI Draft1

13 Figure 6: DUT Connection Example for DP Testing 8. Connecting to the DUT for testing (Referring to Figure 6) 1. Plug X6 Sideband connector from DP Test Adapter (Wilder as an example) into the AUX Adapter board. 2. Connect SMA Cables from the AUX connections on the Test Adaptor to the AUX connections on the AUX Adapter board. 3. Connect the AUX Adapter board to the DP AUX Controller using a standard DP Cable. 4. Connect AUX Controller (DPR-100 as example) to Oscilloscope using a standard USB Cable. Ensure that the driver for the AUX Controller is installed on the oscilloscope s Windows OS. 5. Connect the SMA pairs on the DP test adapter to Scope channels 6. Ensure the DUT is powered. 9. Running the DisplayPort Compliance Tests The following is the recommended test flow for a 2 lane Source that supports all Swing and Pre- Emphasis Levels. The testing is broken up into the following two sub-sections. 1. RBR/HBR/HBR2 Measurements this section takes advantage of the DPCD Control over the AUX channel to capture all waveforms and performs all the required tests for RBR and HBR. It also describes the test procedure if the DUT does not support automation. 2. Dual Mode Measurements this section describes how to put the DUT in a TMDS signaling mode at the proper resolution in order to make the Dual Mode (DP++) compliance measurements. DisplayPort Test Implementation Group 13 Teledyne LeCroy MOI Draft1

14 9.1. RBR/HBR/HBR2 Measurements This section takes advantage of the DPCD Control over the AUX channel to capture all waveforms and performs all the required tests for RBR and HBR. It is highly desirable to perform these tests with automation due to the number of test conditions that need to be performed. Full automation reduces an engineer s time to execute and removes human error from the DUT setup during testing. However, not all sources support full automation. Thus, both automated and non-automated procedures are outlined below RBR/HBR/HBR2 Measurements if the DUT supports Automation If using full automation, execute the RBR/HBR tests as follows: 1. Start DisplayPort App from LeCroy QualiPHY Framework Figure 7: Running the DP Compliance Application 2. Click Edit/View Configuration to select a Template: DisplayPort Test Implementation Group 14 Teledyne LeCroy MOI Draft1

15 Figure 8: Configuration Menu Selection Figure 9: Configuration Menu 3. Go to Test Selector Tab and select all Main Link, AUX and DP Alt mode tests to perform: DisplayPort Test Implementation Group 15 Teledyne LeCroy MOI Draft1

16 Figure 10: Test Selection Menu 4. Next, go to variable setup tab. 5. To setup Automation using DPR-100: - Scroll to the TX Automation folder and change Tx Automation to DPR Key in the 40 digit key from label on DPR-100 to DPR License Key field. (Note: if the DPR-100 does not include the label, contact Unigraf to purchase a license.) - Enter the COM PORT number for DPR-100 COM Port, which can be found in Device Manager. DisplayPort Test Implementation Group 16 Teledyne LeCroy MOI Draft1

17 6. Close the dialog and hit the Start button Figure 11: Variable Setup Menu Figure 12: Start the Tests RBR/HBR/HBR2 Measurements without Automation If using DUT vendor specific tool for controlling Data Rate, Swing, and Pre-Emphasis Levels, follow this procedure: 1. Follow all the steps in the previous section with the exception of Step 5. In the Variable Setup tab, change Tx Automation to None DisplayPort Test Implementation Group 17 Teledyne LeCroy MOI Draft1

18 Figure 13: Enable Automation Unchecked for Manual DUT Control 2. When running without automation, the DisplayPort SW will prompt you with DisplayPort DUT Settings dialogs when a DUT change needs to occur. 3. Set DisplayPort DUT s Bit rate, Swing, Pre-emphasis, PostCursor2, Test Pattern, and SSC values as requested in the application. 4. After entering the proper setting on the DUT Control SW, Press OK on the application. 5. After the first set of waveforms are captured and analyzed on all channels, another DisplayPort DUT Settings dialog will appear asking you to setup the DUT for the next waveform. 6. Alternate between the DUT Control SW and the LeCroy dialog until all requested waveforms are captured and analyzed. It will take approximately half a day to capture and analyze all waveforms needed for RBR/HBR/HBR2 Compliance. 7. Continue to Section to save and report results Running Compliance Testing with automation and a switch matrix If using a switch matrix, all four channels can be tested with the same setup. In the Variables dialog shown below, (Lane Setup folder), select Number of Lanes = 4. The DUT Configuration Menu and Test Setup using a switch matrix is shown below. The switch is a 4 x 2-to-1 switch..named A,B,C,D with the following connections: A is paired with lane0+ and Lane2+ B is paired with lane0- and lane2- C is paired with lane1+ and Lane3+ D is paired with Lane1- and Lane3- Note: that when using this configuration that Lane0/Lane1 and Lane2/Lane3 Interpair Skew can be measured directly, however Lane0/Lane2 Skew can be derived by the following equation: lane0/lane2 Interpair Skew = lane0/lane1 Skew + lane1/lane2 Skew. DisplayPort Test Implementation Group 18 Teledyne LeCroy MOI Draft1

19 Figure 14: Configuring for 4 Lane testing using Switch Matrix Figure 15: 4 Lane test setup using Switch Matrix DisplayPort Test Implementation Group 19 Teledyne LeCroy MOI Draft1

20 Viewing, Saving and Reporting RBR/HBR/HBR2 Compliance Test Results All collected results must be stored and archived for references and reporting results for the VESA Compliance program Viewing RBR/HBR/HBR2 Compliance Test Results 1. When all tests are completed, the report will be saved to the pre-selected format of your choice. Figure 16: Report Generator Window 2. Report Generator can also be brought up from main QualiPHY Window: o o Click General Setup Go to Report Tab and Click Report Generator DisplayPort Test Implementation Group 20 Teledyne LeCroy MOI Draft1

21 Figure 17: Report Generator Selection DisplayPort Test Implementation Group 21 Teledyne LeCroy MOI Draft1

22 9.2. Dual Mode Measurements (For DUTs that support Dual-Mode) This section describes the procedure for running Dual Mode Display Port (DP++) tests as called out in Sections 3.18 and 3.19 of the DP1.2b CTS. This procedure is implemented using the same setup as in Figure8 with a fixture that is configured for Dual Mode testing Connecting to the DUT for testing (Referring to Figure 8) In this example, the Wilder AUX adapter needs to be changed to the correct jumper settings for Dual Mode testing. The following figure shows the correct jumper settings. Wilder AUX Controller Board Dual Mode Test Jumper Location Figure 18: Wilder AUX Control Board used for Dual Mode Testing Dual Mode (DP++) Connection Diagram Figure 19: Dual Mode (DP++) Connection Diagram DisplayPort Test Implementation Group 22 Teledyne LeCroy MOI Draft1

23 Dual Mode (DP++) Test Procedure The following procedure is to be used for Dual Mode testing. 1. Follow same procedure as 9.1 to bring up DisplayPort Application from QualiPHY Framework but make sure you select Dual Mode Tests from Test Selector Tab: Figure 20: Dual Mode Tests Selection 2. Close the dialog and hit the Start button. DisplayPort Test Implementation Group 23 Teledyne LeCroy MOI Draft1

24 Saving Dual Mode Test Results. Figure 21: Starting Dual Mode Tests Refer to Section on details of saving the project and report results. DisplayPort Test Implementation Group 24 Teledyne LeCroy MOI Draft1

25 9.3. Manchester AUX Channel EYE Test Manchester AUX Channel EYE Test Connection Diagram Figure 22: Manchester AUX Channel EYE Setup Manchester AUX Channel EYE Test Connection Procedure The following procedure is to be used for Manchester AUX Channel EYE testing. 1. Follow same procedure as 9.1 to bring up DisplayPort Application from QualiPHY Framework but make sure you select AUX Channel Test from Test Selector Tab: DisplayPort Test Implementation Group 25 Teledyne LeCroy MOI Draft1

26 Figure 23: Manchester AUX Channel EYE Test Selection 2. Close the dialog and hit the Start button. Figure 24: Starting Manchester AUX Channel EYE Tests Saving AUX Channel EYE Test Results. Refer to Section on details of saving the project and report results. DisplayPort Test Implementation Group 26 Teledyne LeCroy MOI Draft1