Teledyne QPHY-DisplayPort User Manual

QPHY-DisplayPort

DisplayPort Serial Data

Operator’s Manual

Revision A – November, 2008

Relating to the Following Release Versions:

• Software Option Rev. 5.7

• DisplayPort Script Rev. 1.1

• Style Sheet Rev. 1.2

LeCroy Corporation

700 Chestnut Ridge Road Chestnut Ridge, NY 10977–6499 Tel: (845) 578 6020, Fax: (845) 578 5985

Internet: www.lecroy.com

LeCroy, ActiveDSO, WaveLink, JitterTrack, WavePro, WaveMaster, WaveSurfer, WaveExpert, WaveRunner and WaveJet are registered trademarks of LeCroy Corporation. Other product or brand names are trademarks or requested trademarks of their respective holders. Information in this publication supersedes all earlier versions. Specifications subject to change without notice.

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Visit www.lecroy.com to view the certificate.

Document Number: 916466 Rev A

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For more information about proper disposal and recycling of your LeCroy product, please visit

www.lecroy.com/recycle.

QPHY-DisplayPort-OM-E Rev A

QPHY-DisplayPort Software Option

TABLE OF CONTENTS

INTRODUCTION TO QUALIPHY DISPLAYPORT .................................................................... 6

Required equipment ................................................................................................................................................... 6

DisplayPort Compliance Test Fixtures ....................................................................................................................... 6

USING QUALIPHY DISPLAYPORT .......................................................................................... 6

QUALIPHY COMPLIANCE TEST PLATFORM ......................................................................... 7

Oscilloscope Option Key Installation .......................................................................................................................... 9

Typical (Recommended) Configuration ...................................................................................................................... 9

Remote (Network) Configuration ............................................................................................................................... 9

Oscilloscope Selection ............................................................................................................................................... 9

Accessing the QPHY-DisplayPort Software using QualiPHY .................................................................................. 10

Customizing QualiPHY ............................................................................................................................................. 12

QPHY-DisplayPort Operation ................................................................................................................................... 14

DISPLAYPORT MEASUREMENT PREPARATION ................................................................ 15

QPHY-DISPLAYPORT TEST CONFIGURATIONS ................................................................. 15

All Tests for Compliance (Lane0) ............................................................................................................................. 15

All Tests, High Bit Rate, SSC ................................................................................................................................... 15

All Tests, Reduced Bit Rate, SSC ............................................................................................................................ 15

Demo Mode, High Bit Rate, No SSC ....................................................................................................................... 15

Empty Template........................................................................................................................................................ 15

QPHY-DISPLAYPORT VARIABLES ....................................................................................... 16

Test Mode ......................................................................................................................................................... 16

Bitrate(s) to Use for Test ................................................................................................................................... 16

Lane Under Test ............................................................................................................................................... 16

SSC ................................................................................................................................................................... 16

3.1 Eye Diagram Testing .......................................................................................................................................... 16

Output Level to Test.......................................................................................................................................... 16

Pre-emphasis Level to Test .............................................................................................................................. 16

3.3 Pre-Emphasis Level Verification Testing ............................................................................................................ 16

Output Level to Test.......................................................................................................................................... 16

3.4 Inter-Pair Skew Test ........................................................................................................................................... 16

Second Lane Under Test .................................................................................................................................. 16

Output Level to Test.......................................................................................................................................... 16

Only Test At Highest Bit Rate ........................................................................................................................... 16

3.5 Intra-Pair Skew Test ........................................................................................................................................... 16

Output Level to Test.......................................................................................................................................... 16

Only Test at Highest Bit Rate ........................................................................................................................... 17

3.10 AC Common Mode Noise ................................................................................................................................ 17

Output Level to Test.......................................................................................................................................... 17

Pre-emphasis Level to Test .............................................................................................................................. 17

3.11 & 3.12 Non-ISI and Total Jitter Measurements ................................................................................................ 17

Output Level to Test.......................................................................................................................................... 17

Pre-emphasis Level to Test .............................................................................................................................. 17

3.14-3.16 Spread Spectrum Tests ............................................................................................................................ 17

Output Level to Test.......................................................................................................................................... 17

QPHY-DISPLAYPORT LIMIT SETS ........................................................................................ 17

QPHY-DISPLAYPORT TESTS ................................................................................................ 18

3.1 Eye Diagram Testing .......................................................................................................................................... 18

3.2 Non Pre-Emphasis Level Verification Testing .................................................................................................... 18

QPHY-DisplayPort-OM-E Rev A

3.3 Pre-Emphasis Level Verification Testing ............................................................................................................ 18

3.4 Inter-Pair Skew Test ........................................................................................................................................... 18

3.5 Intra-Pair Skew Test ........................................................................................................................................... 19

3.10 AC Common Mode Noise................................................................................................................................. 19

3.11 Non-ISI Jitter Measurements ............................................................................................................................ 19

3.12 Total Jitter Measurements ................................................................................................................................ 19

3.14 Main Link Frequency Compliance .................................................................................................................... 19

3.15 Spread Spectrum Clock Modulation Frequency ............................................................................................... 19

3.16 Spread Spectrum Clock Modulation Deviation ................................................................................................. 19

QPHY-DisplayPort-OM-E Rev A

QPHY-DisplayPort Software Option

TABLE OF FIGURES

Figure 1. Report menu in QualiPHY General Setup .............................................................................................. 7

Figure 2. The Test Report includes a summary table with links to the detailed test results ............................ 8

Figure 3. QualiPHY main menu and compliance test Standard selection menu ............................................. 10

Figure 4. QualiPHY configuration selection menu ............................................................................................. 11

Figure 5. QualiPHY test item selection menu ...................................................................................................... 12

Figure 6. Variable Setup and Limits Manager windows ..................................................................................... 13

Figure 7. Start button ............................................................................................................................................. 14

Figure 8. Example of pop-up connection diagram and dialog box ................................................................... 14

QPHY-DisplayPort-OM-E Rev A

INTRODUCTION TO QUALIPHY DISPLAYPORT

QPHY-DisplayPort is an automated test package performing all of the normative real time oscilloscope tests for sources in accordance with version 1.1 of the VESA DisplayPort PHY Compliance Test Specification. The software can be run on LeCroy’s SDA 9000, SDA 11000 and SDA 13000 real time oscilloscopes.

Required equipment

• SDA 9000, SDA11000 or SDA13000 Oscilloscope

• 4 SMA Male to SMA Male cables

• 8 SMA 50 Ω Terminators

• DisplayPort Test Fixture (as follows)

DisplayPort Compliance Test Fixtures

LeCroy recommends using the Efficere ET-DP-TPA-P (plug test adapter) as well as 10 two inch GPPO-to-SMA cables. This equipment is available from Efficere individually or as part of the ET-HDMI-TPA-S Test Adapter Set.

The recommended test fixture for DisplayPort compliance testing is the ET-DP-TPA-S from Efficere Technologies. The ET-DP-TPA-S DisplayPort test adapter set provides a very high bandwidth, low noise evaluation vehicle that enables high-performance characterization of source and sink devices as well as cabling. Single Data Rate (SDR) DisplayPort v1.1 bandwidth requirements exceed 10.8 Gb/s, equivalent to a data transfer rate of 1080 Mbytes/second. This adapter test set will also support Double Data Rates (DDR) anticipated in the v2.0 specification.

Note: The above text was taken from the ET-DP-TPA-S datasheet that can be found at www.efficere.com

USING QUALIPHY DISPLAYPORT

QualiPHY DisplayPort guides the user, step-by-step, through each of the normative source tests described in version 1.1 of the VESA DisplayPort PHY Compliance Test Specification. To do this, the user must setup a test session.

Users choose the test configuration they wish to run. There are five pre-loaded test configurations. They are:

• All Tests for Compliance (Lane0)

• All Tests, High Bit Rate, SSC

• All Tests, Reduced Bit Rate, SSC

• Demo Mode, High Bit Rate, No SSC

• Empty Template

These pre-loaded configurations provide quick and easy ways to begin compliance testing. If the user does not want to run any of these configurations, they can create their own custom configuration (see the following section entitled Customizing QualiPHY for details). The Empty Template is a blank configuration meant to serve as an easy way to create your own custom configuration.

The pre-loaded configurations are setup to run all of the compliance tests on Lane 0, with the second lane tested against for Inter-Pair Skew set to Lane 1. If this is not what the user wants, the variables can be modified (see the QPHY-DisplayPort Variables section of this manual).

The variables are pre-loaded with the standard settings for compliance testing; however, the user may choose to create their own configuration with the variables set as desired.

QPHY-DisplayPort-OM-E Rev A

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