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UCD-424 • USB-C DP Alt Mode 8K Generator & Analyzer
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Description
Please note that Unigraf has announced the End of Life for UCD-424. For the official announcement and more info, click here. For USB-C DP Alt Mode testing, Unigraf offers UCD-500. UCD-500 is a DP 2.1 CTS Test Tool supporting both DP and USB-C connectors.
UCD-424 is an 8K Reference Sink, Source, and Branch for verifying DisplayPort™ Alt Mode over USB-C up to 8K@30 Hz (8K@60 Hz with DSC) and 4K@120 Hz video modes with HBR3 max bit rate capability. It features USB-C v1.3 input and output with Power Delivery 3.0. The unit also supports MST (4 streams), Forward Error Correction (FEC), Display Stream Compression (DSC), and Link-Training Tunable PHY Repeater (LTTPR). UCD-424 also supports DP 1.4a Link Layer, DSC, and HDCP 2.3 compliance testing.
Reliable Compliance Testing Tool
DisplayPort 1.4a Link Layer Compliance Testing
Just like any other DisplayPort device, devices with USB-C DisplayPort Alternate Mode capability need to be tested for DisplayPort compliance. UCD-424 supports DP 1.4a Link Layer CTS including DSC testing on Sinks, Sources and Branches. DSC Certification from VESA on the Link Layer CTS tests for UCD-424 is pending. DSC Encoder and Decoder is a separate license required for DSC CTS in DP 1.4a Link Layer CTS.
HDCP 2.3 Compliance Testing
VESA 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-424 supports HDCP 2.3 compliance testing on USB-C DP Alt Mode Transmitters, Receivers and Repeaters. The official approval of HDCP 2.3 CTS testing for UCD-424 from DCP is pending.
E-learning center: HDCP 2.3 CTS Testing
DP 1.4a CTS Status
From the table below you find the latest updates on DisplayPort 1.4a CTS tests for UCD-400.
| Date | Update |
|---|---|
| 18.3.2022 | Adaptive Sync CTS tests now available for UCD-400 |
| 21.12.2021 | DisplayID-EDID CTS tests now available for UCD-400 |
DisplayPort 1.4a CTS status for testing Source DUT.
For detailed information of the Source test sets, click here.
| Section | Test IDs in DP1.4a LL CTS | Unigraf Test Set | Unigraf Implementation Status | VESA Status |
|---|---|---|---|---|
| Link Layer | 4.2.1.1 - 4.4.1.3, 4.4.2 - 4.5.1.2 | MT6637: DP 1.4a Link Layer CTS for Source DUT | Complete |  |
| DSC | 4.6.1.1 - 4.6.1.9 | MT6642: DP 1.4 DSC CTS for testing Source DUT | Complete | |
| DisplayID-EDID | 4.7.1.1 - 4.7.4.1 | MT6646: DisplayID / EDID CTS for testing Source DUT | Complete | |
| 4.7.5.1 | Complete |  |
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| Adaptive Sync | 4.8.1.1 - 4.8.2.2 | MT6648: AdaptiveSync CTS for testing Source DUT | Complete | |
DisplayPort 1.4a CTS status for testing Sink DUT.
For detailed information of the Sink test sets, click here.
| Section | Test IDs in DP1.4a LL CTS | Unigraf Test Set | Unigraf Implementation Status | VESA Status |
|---|---|---|---|---|
| Link Layer | 5.2.1.1 - 5.4.1.4, 5.4.2 - 5.5.1.7 | MT6635: DP 1.4a Link Layer CTS for Sink DUT | Complete | |
| DSC | 5.6.1.1 - 5.6.2.14 | MT6643: DP 1.4 DSC CTS for testing Sink DUT | Complete | |
| DisplayID-EDID | 5.7.1.1 - 5.7.4.3, 5.7.4.5, 5.7.5.1 - 5.7.12.3 | MT6647: DisplayID / EDID CTS for testing Sink DUT | Complete | |
| Adaptive Sync | 5.8.1.1 - 5.8.1.3 | MT6649: AdaptiveSync CTS for testing Sink DUT | Complete | |
Unique Features
DisplayPort Entry From Any Role
UCD-424 can enter to DP Alt Mode with any DP Alt Mode partner. Enter DP Alt Mode from any state and controls to swap roles is possible.
UCD Console GUI:
The UCD Console GUI is the dedicated software that enables users to access the test features of the UCD-424 and is supported for Windows, macOS, and Linux. The software provides the user with a flexible way of navigating between the interface based roles of the device and functionalities of each role. The UCD Console features a preview window for the received video and audio, while also monitoring the controls of the link parameters and built-in pattern generator in UCD-424. Users can also have access to an EDID editor and control of the HDCP function.
E-learning center: UDC Console GUI
LTTPR (Link Training Tunable PHY Repeaters):
LTTPR is a feature that helps maintain signal integrity between DisplayPort Source and Sink by letting each repeater optimize the signal path with link training. UCD-424 is able to act as a DisplayPort source controlling the LTTPRs in the downstream signal path. LTTPR Test is a software addition for the UCD-424. Click here to find out more about LTTPR.
Video: How to Use UCD-424 with UCD Console
Watch this tutorial on how to use UCD-424 with UCD Console:
Video: How to Test USB-C Devices and Verify DP Alt Mode
Video: How to Source DSC Content with UCD Console
Watch this tutorial on how to source DSC content with UCD Console:
Default Tests in UCD-424
UCD-424 device is delivered with UCD Console and TSI (Test System Interface) SDK (System Development Kit) for Type-C Sinks and Sources. Please, refer to the table below to see the default tests provided with UCD Console and TSI SDK.
Note: HDCP 2.3 Support is also delivered with the UCD-424 device.
For Type-C DP Sink
| Category | Feature |
|---|---|
| USB-C Modes | USB Data Role status |
| USB Data Role control | |
| USB-C Power Role status | |
| USB-C Power Role control | |
| Event Logger | |
| Power Delivery protocol monitoring | |
| USB-C Vbus / CC / Vconn voltage & current monitoring | |
| DP Alt Mode | USB-C DP Alt Mode status |
| USB-C DP Alt Mode control | |
| DP AUX Analyzer | |
| EDID read and write | |
| DCPD read and write | |
| Event Log | |
| DP Alt Mode Reference Sink | DP Link Status Information |
| DP Alt Mode capture, preview and saving | |
| Link and CRC tests for Source DUT | |
| DP Alt Mode Reference Source | DP Link Status Information |
| Video Pattern Generator with fixed patterns and timings | |
| Audio generator | |
| Monitor SDP | |
| Testing HDCP | HDCP preview up to 2.3 |
| HDCP status monitor and control up to HDCP 2.3 | |
| HDCP 2.3 Key Test support |
For Type-C DP Source
| Category | Feature |
|---|---|
| USB-C Modes | USB Data Role status |
| USB Data Role control | |
| USB-C Power Role status | |
| USB-C Power Role control | |
| Event Logger | |
| Power Delivery protocol monitoring | |
| USB-C Vbus / CC / Vconn voltage & current monitoring | |
| DP Alt Mode | USB-C DP Alt Mode status |
| USB-C DP Alt Mode control | |
| DP AUX Analyzer | |
| EDID read and write | |
| DCPD read and write | |
| Event Log | |
| DP Alt Mode Reference Sink | DP Link Status Information |
| DP Alt Mode capture, preview and saving | |
| DP Alt Mode Reference Source | DP Link Status Information |
| Control the Downstream Link | |
| Video Pattern Generator with fixed patterns and timings | |
| Video Pattern Generator with custom patterns and timings | |
| Audio generator | |
| Testing HDCP | HDCP preview up to 2.3 |
| HDCP status monitor and control up to HDCP 2.3 | |
| HDCP 2.3 Key Test support |
Highlights
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8K and 4K Reference Sink & Source
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DP 1.4a Link Layer CTS for Sinks & Sources
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HDCP 2.3 CTS for Transmitters & Receivers
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DP 1.4a Features:
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Up to HBR3 simultaneous input and output in one unit
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DSC Sink & Source with off-line encoding and decoding
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FEC and LTTPR support
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MST support (4 streams)
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USB-C v1.3 with Power Delivery 3.0
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DP Alt Mode
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Capable to Sink & Source 9V@3A
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PD Role swaps supported
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USB3.2Gen2 (10Gbit/s) bypass between test interfaces
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HDCP 1.3 and HDCP 2.3 support
