DP 1.2 Link CTS Core and Extension Tests

DPR-120 Product

DP 1.2 Link CTS Tests

Unigraf's DP 1.2 Link Layer CTS Test Solution implements the tests defined in VESA DisplayPort Link Layer Compliance Test Specification: Version 1.2 Core and Extension Set 1

Unigraf's Hardware Test Tool for DP 1.2 Link CTS Tests is DPR-120. It is a full featured DisplayPort™ 1.2 compliant Reference Sink. The Debug and Test Controller GUI is the user interface of DPR-120. It provides the user a multitude of valuable tools for monitoring the performance of the DUT.

DPR-120 DTC GUI includes the engineer tools for configuring the test options, running tests individually or in groups, and for saving test reports in easy to read HTML format.

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Execute VESA Specification

Unigraf CTS test GUI support the engineer in productive compliance verification. It provides the engineer a clear view of the execution of the test by following in detail the procedure of the VESA specification and describing each action the tested equipment and the Reference Sink. In this way it is straightforward for the engineer to comprehend the test flow and detect each procedure step.

Each action in the test execution is stored in the report by using HTML format. The report provides the user the test results both on top level as in depth detailed execution of each test. The report can also contain additional valuable information about the test configuration and e.g. software versions used.

Test Sets

Unigraf DP 1.2 Link CTS SW are divided into sets of tests. Sets A and B cover the High Bit Rate 2 (HBR2) and Link Training related tests of Extension 1. Set C includes the tests from Link CTS Core that are not covered by the tests included in sets A and B.

DPR-120 as an authorized Test Tool

VESA has certified DPR-120 as the Authorized Test tool for testing Link layer CTS 1.2 Core and Extension Set 1 revision 1.1. (pls find information about certified software versions here ).

Click here for a detailed
description of DP 1.2 Link CTS testing with DPR-120.

Debug and Test Controller GUI

The desktop user interface for DPR-120 is called Debug and Test Controller (DTC) GUI. It provides the user access to all link status information and ways to control the features of the DPR-120 sink for testing DUT capabilities. It also features an AUX Channel Monitor for evaluating the handshake in the upstream link. DTC GUI is also the user interface for Link compliant tests.

DTC GUI allows the user to evaluate the details of both the upstream DP Link training status and the streams sent by the Source. The user can monitor and log the changes in Main Stream Attributes (MSA), Video Status and CRC of color components. Both the EDID and the DPCD data of the DPR-120 Sink can be altered.

All these are valuable features for testing the DUT source with various sink capability scenarios. Debug and Test Controller GUI is also the user interface for DP 1.2 Link Layer CTS Extensions tests.

Click here for a detailed
description of DPR-120 
Debug and Test Controller GUI.

AUX Channel Monitor

An essential partner for compliance tests is the AUX Channel Monitor. By examining the detailed DPCD reads and writes and their timing, the engineer will get the full picture of the handshake between the source and the sink and the cause of the possible CTS test failure.

Please use the link on this page to find a description of Unigraf's AUX Channel monitor and its user friendly operation.