What do you need to test in DisplayPort interface?

Before video and audio content is sent over a DP link and displayed on the monitor screen a lot of communication has been occurring between a DP source and sink and a possible branch device.

Displayport Interface: 6 Facts You should Know for Gaming & Graphic Design

Poyiccot 8K Displayport 1.4 Cable, Short Displayport Cable 1feet, 32.4Gbps Diplayport to Displayport Cable, Anti-Wear Plastic Displayport Connector for Computer Monitor, Industrial Devices Testing : Electronics

A Guide to DisplayPort 2.1 (and previously 2.0) - Certifications, Standards, Cables and Areas of Confusion and Concern - TFTCentral

Nice to know: What is DisplayPort?

DisplayPort: A Better Video Interface

What's a DisplayPort Cable? – iVANKY

DisplayPort to D-Sub: The Full Range of LCD Monitor Video Input Interfaces

1pcs DisplayPort Female Test Board Big DP Tail Plug Test Stand HDMI 20P Interface Data Cable - AliExpress

How to Choose the Right USB-C to DisplayPort Cable and Adapter

HDMI vs. DisplayPort: Which display interface reigns supreme?

VESA Readies DisplayPort UHBR (Ultra-High Bit Rate) Device Certification and Begins Certification of UHBR Cables - VESA - Interface Standards for The Display Industry

What do you need to test in DisplayPort interface?

Tripp Lite 6ft DisplayPort to HDMI Adapter Cable Video / Audio Cable DP M/M 6' - Black