Compliance Testing

Unigraf is a trusted provider of VESA, DCP LLC and HDR10+ Technologies approved Compliance Test Tools for DisplayPort, USB-C and HDMI interfaces. The 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. Only by testing with certified compliance test tools, you can obtain the DisplayPort certification.

Link Layer Compliance Testing for DisplayPort

DP 2.1 Link Layer CTS Testing

UCD-500 is a DisplayPort™ 2.0 Video Generator and Analyzer unit for testing DisplayPort Sinks and Sources up to 8K@60Hz and 16K@60 Hz (with DSC) video modes with UHBR 20 Max Bit Rate Capability. DP 2.1 Sink and Source Link Layer CTS tests are available with UCD-500 as an add-on licenses.

Please refer to the DP CTS Tool Options for Unigraf UCD-500 for detailed information about the 2.0 Link Layer CTS tests for DisplayPort Sinks and Sources.

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 DP CTS Tool Options for Unigraf UCD-400 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-300/400/500 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.

For detailed information on the tests available for each device, please refer to documents below:

DP CTS Tool Options for Unigraf UCD-3XX

DP CTS Tool Options for Unigraf UCD-400

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.

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)

Dolby Vision Testing

In the compatibility test for Dolby Vision™ Unigraf will provide playback and capturing of the test video and audio content with UCD-series test tools. Dolby will provide customers with the SDK (Software Development Kit) that enables analyzing the Dolby Vision™ video captured with UCD-series test tools. UCD-series test tools also support 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-series test tools are a mandatory tool for any e.g. television or monitor manufacturer that is willing to have a Dolby Vision™ certificate on their products.

8K Dolby Vision Test Tools

UCD-451 for DisplayPort

UCD-451 is an approved video generator for testing Dolby Vision on DisplayPort™ 1.4a sink devices with HBR3 max bit rate capability. Thanks to an extended 32GB memory, UCD-451 enables the verification of 8K Dolby Vision™ content.

More information: UCD-451

UCD-452 for HDMI

UCD-452 is an approved Dolby Vision Test Tool and 10K Video Generator for testing HDMI 2.1 sink devices up to 10K video modes. Thanks to an extended 32GB memory, UCD-452 enables the verification of 8K Dolby Vision™ content.

More information: UCD-452

4K Dolby Vision Test Tools

UCD-323 is an approved Dolby Vision Test Tool and a 4K video generator for testing HDMI 2.0 sink devices up to 4K video modes.

More information: UCD-323

HDR10+ Compliance Testing

Unigraf’s UCD-323 and UCD-422 are approved for HDR10+ compliance testing. Unigraf’s HDR 10+ Display Device Test License allows HDR 10+ adopters to generate HDR 10+ specific patterns that are required by HDR 10+ LLC to certify Sink devices such as TVs and Monitors for HDR 10+.

Unigraf’s solution integrates Klein K-10A colorimeter for automated testing of HDR 10+ Display Device tests allowing users to set and play the patterns without having to manually measure luminance values of HDR 10+ patterns. Users that do not have Klein K-10A colorimeter will be able to manually record measured luminance values into the software GUI. This solution is easy to use and reduces the time required to run HDR 10 Display Device certification tests.

DisplayPort PHY Compliance Test Automation

Automate PHY CTS

Unigraf provides companion test tools to be used with Oscilloscopes in testing PHY compliance on DisplayPort.

For detailed information, please refer to DisplayPort PHY Compliance Test Automation Tools

UCD-323 Gen2

UCD-323 Gen2 is a companion tool for PHY test equipment to perform automated DP 2.0 PHY compliance testing for Source and Sink DUTs.


DPT-200 is operating as a DP AUX Controller to automate the DP PHY testing of DisplayPort sink devices with a compliant PHY Test Equipment. DPT-200 is already compatible with Keysight.


DPR-100 operates as a DP AUX Controller to automate the DP PHY testing of DisplayPort source devices with a compliant PHY Test Equipment. With the AUX Controller firmware, DPR-100 is compatible with Keysight, Teledyne LeCroy and Tektronix oscilloscopes.

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 2.1 Link Layer CTS
DP 2.1 UHBR PHY Layer CTSGen2
DisplayPort 1.4a Link Layer CTS
DP 1.4a HBR3 PHY Layer CTSGen2
DisplayID / EDID CTS
Adaptive Sync CTS
HDCP 2.3 CTS for Transmitter DUT
HDCP 2.3 CTS for Receiver DUT
HDCP 2.3 CTS for Repeater DUT
Dolby Vision™

Unigraf Compliance Test Tools

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