Teledyne LeCroy Announces Second-Generation DisplayPort™ 2.1 PHY Compliance Test and Debug Solutions

Rhea-AI Impact

(Moderate)

Rhea-AI Sentiment

(Neutral)

Key Terms

physical layer technical

The physical layer is the part of a communications system that handles the actual transmission of raw digital signals over cables, fiber, radio waves or other media. Think of it as the pipes and wiring that carry data — it doesn't interpret the content, it only moves the bits. Investors watch it because changes in capacity, reliability, technology upgrades or regulation at this level affect network performance, costs and capital spending for tech and telecom businesses.

compliance test specification technical

A compliance test specification is a detailed checklist that describes the exact tests, measurements and pass/fail criteria used to show a product, process or report meets legal and regulatory rules. Think of it as a recipe that tells testers what to check and what counts as acceptable; for investors, it matters because passing those checks often controls whether a product can be sold, a trial can proceed, or a company avoids penalties, all of which affect revenue and risk.

device under test technical

The device under test is the specific product, prototype or hardware being evaluated during laboratory, clinical or quality-control testing to check performance, safety and compliance. Like a car taken through an inspection lane, its test results determine whether it meets standards, needs fixes, or faces delays, so they directly affect development timelines, regulatory approval, manufacturing costs and investor risk and potential returns.

usb-c power delivery technical

USB-C Power Delivery is a standardized fast-charging system built into USB-C ports and cables that lets a device and a power source communicate to safely deliver higher or adjustable amounts of electricity than older USB chargers. It matters to investors because broad adoption shapes consumer device design, accessory demand and manufacturing choices—like a common plug that makes many new products compatible and spurs markets for chargers, cables and related components.

12/19/2025 - 11:35 AM

Upgraded compliance test software speeds testing while PHY-Logic debug improves interoperability and end-user satisfaction.

CHESTNUT RIDGE, N.Y.--(BUSINESS WIRE)-- Teledyne LeCroy, part of Teledyne Technologies Incorporated (NYSE:TDY), today announces support for DisplayPort™ 2.1 physical layer (PHY) compliance testing in its second-generation QualiPHY 2 automated compliance test framework. Teledyne’s QualiPHY 2 software runs on Teledyne LeCroy oscilloscopes, performing standardized physical layer tests of high-speed serial data technologies such as PCI Express^®, USB, Thunderbolt™, DisplayPort and HDMI^®. The new QPHY2-DP2-SOURCE-TX and QPHY2-DP2-SINK-RX products run either on a Teledyne LeCroy oscilloscope or offline on a host PC installed with the QPHY2-PC option.

DisplayPort 2.1 provides ultra-high resolution and fast display refresh rates using ultra-high bit rates (UHBR) and multiple serial data lanes. This combination of capabilities requires extensive testing to ensure compliance test specification (CTS) requirements are met. Despite this, DisplayPort links that pass compliance testing often fail interoperability tests, decreasing end-user satisfaction.

Teledyne LeCroy’s VESA-approved QualiPHY 2 DisplayPort 2.1 PHY compliance test software options run on a Teledyne LeCroy oscilloscope in the lab to automate both Source (Tx) and Sink (Rx) testing in a single test framework. QPHY2-PC offline compliance test software provides flexibility to complete the testing outside the lab using already captured data. Used together, these products eliminate laboratory bottlenecks, performing validation and compliance tests in a fraction of the time required by previous products. The complete compliance test solution consists of:

New QualiPHY 2 options QPHY2-DP2-SOURCE-TX and QPHY2-DP2-SINK-RX that support all UHBR, HBR and RBR test requirements, and QPHY2-PC option for offline analysis
QualiPHY 2-driven Device Under Test (DUT) automation using AUX controllers from Unigraf (UCD-323) and Wilder Technologies (DPAC-CAM)
WaveMaster 8000HD oscilloscope that performs both high-speed compliance testing and low-speed sideband interoperability debug testing
Anritsu SQA-R MP1900A Signal Quality Analyzer for DisplayPort 2.1 stressed signal generation during Sink (Rx) testing
WavePulser 40iX High-speed Interconnect Analyzer to automate S-parameter measurements for cable de-embedding, Tx/Rx return loss testing and Rx channel calibration
SDA Expert for DisplayPort (SDAX-DP) software to analyze signal quality during training

The VESA PHY CTS does not expressly describe or require interoperability testing between Sources and Sinks. However, failures of PHY-Logic communications when setting up the Source-Sink link will lead to dropped display connections, timeouts or reduced resolution. Teledyne LeCroy’s interoperability debug solution improves end-user satisfaction. It consists of:

WaveMaster 8000HD oscilloscope with both 50 Ω (high-speed) and 1 MΩ (low-speed) inputs, optimized for simultaneous acquisition of the SBU/AUX electrical signal and Main Link high-speed signals
DP-AUX TDMP and USB-PD TDMP software options to trigger on and decode any AUX channel or USB-C power delivery message, helping to debug Source and Sink link negotiation

“Teledyne LeCroy is pleased to meet the need for fast and efficient DisplayPort 2.1 PHY compliance testing, and to provide interoperability debug tools to ensure that developers are able to meet end-user expectations for the highest performance possible with DisplayPort 2.1 UHBR speeds,” said Tyler Cox, Vice President, General Manager Scopes/Digitizers.

For more information about Teledyne LeCroy’s DisplayPort 2.1 test solutions, visit: https://www.teledynelecroy.com/displayport-phy-test/.

To access Teledyne LeCroy’s approved PHY test Methods of Implementation (MOI), visit: https://www.teledynelecroy.com/resources/details.aspx?doctypeid=2&mseries=654

About Teledyne LeCroy

Teledyne LeCroy is a leading manufacturer of advanced oscilloscopes, protocol analyzers, and other test instruments that verify performance, validate compliance, and debug complex electronic systems quickly and thoroughly. Since its founding in 1964, the Company has focused on incorporating powerful tools into innovative products that enhance "Time-to-Insight". Faster time to insight enables users to rapidly find and fix defects in complex electronic systems, dramatically improving time-to-market for a wide variety of applications and end markets. Teledyne LeCroy is based in Chestnut Ridge, N.Y. For more information, visit Teledyne LeCroy's website at teledynelecroy.com.