Unigraf’s UCD-424 • USB-C DP Alt Mode 8K Video Generator & Analyzer is Available for Shipping

April 30, 2020

Unigraf’s new USB-C DP Alt Mode 8K Video Generator & Analyzer, UCD 424 is now available for shipping.

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.

DisplayPort 1.4a Link Layer Compliance Testing

UCD-424 supports DP 1.4a Link Layer CTS including DSC testing for USB-C DP Alt Mode Sinks, Sources and Branches. Certification from VESA on the Link Layer CTS tests for UCD-424 is pending.

HDCP 2.3 Compliance Testing

UCD-424 supports HDCP 2.3 compliance testing for 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.


  • 8K and 4K Reference Sink & Source
  • DP 1.4a Link Layer CTS for Sinks & Sources
  • HDCP 2.3 CTS for Transmitters & Receivers
  • DP 1.4a Features:
    • Up to HBR3 simultaneous input and output in one unit
    • DSC Sink & Source with off-line encoding and decoding
    • FEC and LTTPR support
    • MST support (4 streams)
  • USB-C v1.3 with Power Delivery 3.0
    • DP Alt Mode
    • Capable to Sink & Source 9V@3A
    • PD Role swaps supported
  • USB3.2Gen2 (10Gbit/s) bypass between test interfaces
  • HDCP 1.3 and HDCP 2.3 support


For more information:

UCD-424 Product Page

For detailed information on delivery time and pricing, please contact Mr. Tapio Perä at tapio.pera@www.unigraf.fi