Compliance Testing

Unigraf is a trusted provider of VESA and DCP LLC approved Compliance Test Tools for DisplayPort and USB-C interfaces. World’s leading electronics manufacturers are using Unigraf’s tools to validate their products. As there are hundreds of manufacturers making DisplayPort devices, compliance testing according to VESA and DCP standards is the only way to ensure interoperability between different DisplayPort devices available on the market. Also, only by testing with certified compliance test tools, you can obtain the DisplayPort certification.

Link Layer Compliance Testing for DisplayPort

DP 1.4a Link Layer CTS Testing

DisplayPort version 1.4 was first published in 2016, and it was updated to 1.4a in 2018. Unigraf continued a pioneering approach to DisplayPort Link Layer CTS testing by introducing UCD-400, a HBR3 capable 8K video analyzer and generator. The selection of tests available for UCD-400 provides all tests needed for VESA Certified DP 1.4a Link Layer CTS including DSC testing for DisplayPort Sinks and Sources.

Please refer to the Guide to Unigraf DP CTS Tool Options for detailed information about the DP 1.4a Link Layer CTS tests for DisplayPort Sinks and Sources.

CTS Test Set Controlled via PC GUI

UCD-Console is a common GUI for all UCD-300/400 series products. For DP 1.4a Link Layer CTS testing UCD Console features ready-made test sets that you can easily select, run and monitor. Watch the video below to see how easily you can perform DP 1.4a Link Layer CTS tests on DisplayPort Sinks and Sources.

HDCP 2.3 Compliance Testing

VESA Requires HCDP Testing For DisplayPort Logo Certification

In 2018 VESA announced that it now requires HDCP testing as part of the DisplayPort testing requirement for certification. If a DisplayPort receiver or transmitter supports HDCP (as reported in the product CDF) it shall be tested as part of the certification requirements for obtaining the DisplayPort Logo. (Source: VESA)

UCD Series as Approved Test Tools

Unigraf’s DisplayPort 1.4a Test Tool UCD-400 is approved for testing HDCP 2.3 compliance of Transmitter, Receiver and Repeater devices. For testing Transmitters and Receivers Unigraf offers a 4K video analyzer and generator, UCD-323. Further, 4K video analyzer UCD-301 is approved for testing DisplayPort Transmitters.

The HDCP 2.3 CTS tools are available beyond the DisplayPort connector. UCD-340 is the only DCP Approved HDCP 2.3 CTS Test Tool for testing USB-C DP Alt Mode Transmitters and Receivers devices.

More information:

Easy-to-use GUI as a controller

HDCP 2.3 CTS tests are controlled via Unigraf’s UCD Console user interface. UCD Console features built-in test sets for HDCP 2.3 CTS tests. You can easily select and run the HDCP 2.3 tests. The video below shows how easily you can select, configure and run HDCP 2.3 CTS tests with UCD Console GUI.

AUX Controller for PHY Test Automation

Automate PHY CTS

DisplayPort AUX Controller function for DPR-100 and DPT-200 is used to control the D.U.T. for automating the DisplayPort physical layer compliance tests. The AUX Controller communicates with the DUT to bring it is the state needed for the test. The use of AUX Controller inhibits the user interaction with the DUT.

Save Time

Combining Unigraf AUX Controller with the automation feature of an Oscilloscope or a Bit Error Rate Analyzer (BERT) eliminates the need for user interaction during the test. User can simply configure the desired tests to run and work on other tasks while the tests are being executed. The time saving is considerable since a four-lane DP 1.2 device requires over 1700 data acquisitions for complete characterisation.

Compliant with KeySight and Tektronix

Unigraf AUX Controller feature is compatible with KeySight (Agilent) and Tektronix PHY test equipment to automate PHY compliance testing.

Dolby Vision™ Testing

What is Dolby Vision™?

Dolby has worked closely with industry leaders over the last 50 years to make the stories and experiences as engaging as possible—first with noise reduction, then 5.1 surround and 7.1 surround, and now with Dolby Vision™. Dolby Vision™ transforms the way you experience movies, TV shows, and games with incredible brightness, contrast, and color that bring entertainment to life before your eyes. By fully leveraging the maximum potential of new cinema projection technology and new TVs’ display capabilities, Dolby Vision™ delivers high-dynamic-range (HDR) and wide-color-gamut content. The result is a refined, lifelike image that will make you forget you are looking at a screen.

4K televisions have “more pixels” and newer standards for UHD TV also include high frame rates, but these standards don’t make each pixel able to better represent the full range of brightness we see in reality. Dolby Vision™ is the Dolby Laboratories solution to meet this challenge. The current TV and Blu-ray standards limit maximum brightness to 100 nits and minimum brightness to 0.117 nits, while also limiting the range of colours that can be displayed. Dolby Vision™ colour depth allows up to 10,000-nit maximum brightness. (Dolby 2016)

Unigraf UCD-323 as an approved test tool

Unigraf UCD-323 has been approved as an official Dolby Vision™ compatibility test tool. In the compatibility test for Dolby Vision™ Unigraf will provide playback and capturing of the test video and audio content with UCD-323. Further, Dolby will provide customers with the SDK (Software Development Kit) that enables analyzing the Dolby Vision™ video captured with the UCD-323. As of now, Dolby Vision™ testing is available for HDMI interface. UCD-323 also supports Dolby Vision signaling test using Dolby Vision VSIF and Dolby Vision Vendor Specific Extended Metadata Packets (EMP) using TMDS. With the Dolby SW package, UCD-323 is a mandatory tool for any e.g. television or monitor manufacturer that is willing to have a Dolby Vision™ certificate on their products.

Automate Compliance Testing

All Unigraf’s Compliance Test Tools are delivered with ready-made test sets. These test sets can be easily configured and run from the UCD Console PC GUI. With the provided TSI SDK, all Compliance Tests can be automated.

Application: Test Automation


Unigraf Compliance Test Tools

The table below shows Unigraf’s Compliance Test Tools.

DisplayPort 1.4a Link Layer CTS✓*
HDCP 2.3 CTS for Transmitter DUT✓*
HDCP 2.3 CTS for Receiver DUT✓*
HDCP 2.3 CTS for Repeater DUT✓*
* Tests supported but approval pending by VESA or DCP LLC


Unigraf Compliance Test Tools

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