Diagnosing Hdmi Interoperability Problems Toward The Source - Upstream; Connection Configurations For Testing Hdmi Source Devices - Teledyne Lecroy 780 User Manual

780/780AH Handheld Test Instrument – User Guide
Repeater Test
Link Test
7.1

Diagnosing HDMI Interoperability Problems toward the Source - Upstream

This subsection describes how to diagnose HDMI interoperability problems on HDMI source devices—
upstream (Source Test).
7.1.1

Connection Configurations for Testing HDMI Source Devices

The 780/780AH's HDMI input port acts as a "reference" HDMI sink device. Therefore it enables you to emulate
a known good HDMI sink device to conduct diagnostics upstream toward the source device. The following
illustrations show the typical configurations.
November 17, 2016
1.800.561.8187
Description
Verifies hot plug detect is asserted.

Verifies EDID (bad header, bad checksum, pass/fail on

compliance)
Indicates if the EDID was modified.

Verifies timing pass-through.

Checks if video was passed through unchanged or not.

If timing is passed through, test will also verify if the video is

passed through without color manipulation.
Verifies HDCP authentication and if repeater acts as an HDCP

repeater or not and verifies that it acts properly as an HDCP
repeater.
Test port switch on HDTV with HDCP re-authentication

Description
Tests the maximum number of HDCP keys (max dev count)

supported by the source device during HDCP authentication.
Verifies hot plug detect is asserted.

Verifies EDID (bad header, bad checksum, pass/fail on

compliance).
Runs an HDCP authentication test on both source and sink.

Runs a video test at EDID preferred timing, with HDCP

enabled.
Test port switch on HDTV with HDCP re-authentication

Verifies the incoming video at various timings

Verifies video timing parameters.

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