D9040EDPV Embedded DisplayPort Electrical Performance Validation Software

The Keysight Technologies, Inc. eDP electrical performance and Validation (EPV) software for Infiniium Series oscilloscopes (see Ordering Information table below) provides you with a fast and easy way to verify and debug your eDP interface designs for embedded systems. The eDP Electrical Performance Validation software is designed to be uniquely flexible to handle the wide variety of configurations that are possible in embedded systems and pose characterization challenges. It offers the standard tests that are recommended as well as other informative tests, so it functions equally well as a validation tool. It displays the measurement data results in a flexible report format, and the report also provides a margin analysis that shows how closely your device passed or failed each test. To make measurements with the eDP EPV software, you will also need an eDP TPA fixture for high-speed signal access as well as for AUX channel and other lines of the interface. Available fixtures are identified in the Test Accessories table below. The eDP EPV software is based broadly on the widely-industry-accepted Keysight DisplayPort D9040DPPC compliance application, which extends utility to include a wizard graphic user interface that enables test selection, parameter election, test specification entry, and test template sharing. These features are unique in the industry and are supported to enable ecosystem sharing of test process specifics for highly variant embedded designs. There is no official interoperability program for eDP, though this software goes a long way to create a defacto program – if only for a specific product or family of products. The default specifications are those found in the VESA1 test guideline eDP PHY CTG v1.0. The tests available in the eDP EVP software package are identified in the Tests Performed section of this data sheet. However, there is no limit to what tests you can have available with the Infiniium framework add-in feature, with which you can add your own tests or tests from colleagues to the test suite offered. Details of the add-in capability are covered in the Extensibility section below.

Features

The eDP Electrical Performance Validation software offers new and unique capabilities as well as the standard features available with all Keysight Infiniium framework applications:

• Full physical layer testing of high-speed lanes

• Verification of link layer physical layer control

• Test status tracking

• Measurement process configurability

• Automated scope measurement setup

• Bit rate parameters: Nominal value of bit rate, number of bit rates and test line limit for frequency accuracy

• Level parameters: Nominal value of level, number of levels and test line limits for level accuracy or value of relative change between level settings

• Pre emphasis parameters: Nominal value of pre-emphasis, number of pre-emphasis settings and test line limits for pre-emphasis accuracy or value of relative change between pre-emphasis settings

• Eye diagram mask testing: Entry of arbitrary mask through mask files vs. bit rate

• Jitter testing: entry of arbitrary RJ, DJ, TJ values vs. bit rate

• Test plan creation: Selection of device conditions to test

• Test template: Create default templates for device types avoiding re-entry and share

complete test process setup with others for consistent settings for same process

requirements in different locations

• Test results reports with pass/fail margin analysis

With the eDP EPV test software, you can finally solve the myriad of test issues that embedded test

systems present with one application.

Easy test process definition

The eDP Electrical Performance Validation software extends the ease-of-use advantages of Keysight’s Infiniium Series oscilloscopes and previous DisplayPort standard test software to testing eDP designs. The application will guide you through device setup and test connection with setup wizards to capture all the test process details. In doing so, you will create a tailored process to validate or characterize your device and get exactly what you need.

Using the eDP Electrical Performance Validation Software

The eDP application is started from the analyze tab in the Infiniium GUI. When selected and finished loading, the screen in Figure 1 is presented. This screen looks much like other applications in the Infiniium framework. Of particular note, after selecting the standard to test (eDP) and the test suite (High[1]Speed Physical Layer Tests) are the Device Definition and Test Setup buttons. These are selected in progression, Device Definition first and then Test Setup. You can test with the device definition defaults (determined by the template the user can set) and with the connections defined without any further manipulations. You can proceed to Select Tests tab to select tests you want to run for the test session and continue to running tests.

Device Definition

The Device Definition tab is where much of the eDP EPV software’s power resides. When you click on the Device Definition Setup button, you will see a sequence of windows for you to define your device’s capabilities and the specifications for these. You can see in Figure 2 how much information is shown in the second tab, Link Rate.

First, note that the tabs across the top of the window cover not only the device capabilities such as link rate and level but also capture the details necessary for all the tests that can be conducted. (Example: For eye diagram testing, you can set the pattern at which to test as well as the mask file to be used.) The fundamental issues for eDP testing are addressed with this screen, and they are:

• The number of bit rates of which the device is capable.

• The nominal values of those bit rates.

• The manner to display the frequency accuracy of those bit rates: absolute error (bps) or ppm versus nominal link rate value. The minimum and maximum values are displayed for convenience.

• The CTLE (continuous time linear equalizer) attributes you want to use in the analysis measurements (eye diagram and jitter) to use for each bit rate.

These are defaulted to the values recommended in the VESA eDP standard but are easily alterable. Finally, since spread spectrum clocking (SSC) is a favored technique in embedded systems to keep EMI low, the SSC tests parameters and specifications are selectable here. It can be set to ‘Always On,’ ’Always Off,’ and ‘Settable.’