Oscilloscope software automates DisplayPort 2.1 PHY testing

QPHY 2 software lets you test DisplayPort 2.1 links for compliance to industry standards

Engineers designing DisplayPort 2.1 into devices need a way to verify compliance with standards and that the interface will interoperate with other devices. This involves viewing physical-layer (PHY) eye diagrams at both transmitters and receivers. DisplayPort 2.1 PHY compliance test software options from Teledyne LeCroy oscilloscopes add to the tests you can perform with the company’s equipment and QualiPHY 2 software.

Developed by VESA, DisplayPort competes with HDMI for video. Most graphics cards provide both ports. DisplayPort V2.1 can deliver up to 80 Gbps of data, which translates to 8K at 120 Hz 4K at 240 Hz screen update rates.

DisplayPort 2.1 oscilloscope software options include:

• QPHY2-DP2-SOURCE-TX for transmitters (source)
• QPHY2-DP2-SINK-RX for receivers (sink). It supports automated calibration and Sink bit-error rate (BER) compliance testing.
• QPHY2-PC option lets you perform offline analysis on a PC.

The software supports all DisplayPort variants: Ultra-High Bit Rate (UHBR), High Bit Rate (HBR), and Reduced Bit Rate (RBR) test requirements. DisplayPort 2.1 uses four data lanes, whereas the currently most common version (1.4) supports a single lane.

Source: TFT Central