Running Hdmi Tests Using The Encrypted Link Analyzer - Quantum Data 980 User Manual

980 User Guide

6.15 Running HDMI tests using the Encrypted Link Analyzer

This section describes how to use the optional Encrypted Link Analyzer feature in the Capture and Store mode.
The general operations of the 980 such as setting up the triggers, capture buffer, pre-capture filtering, post capture
filtering and searching etc. described in the previous section apply to the Encrypted Link Analyzer mode.
Exceptions only will be covered in this section.
Note: You must have purchased the Encrypted Link Analyzer option in order to be able to use this feature.
In the Encrypted Link Analyzer mode, the 980 HDMI Rx port is connected to the source device under test and the
980 HDMI Tx port is connected to a sink device. The Encrypted Link Analyzer enables you to monitor and analyze
HDCP encrypted protocol data transmitted between an HDMI source device and sink device. With the Encrypted
Link Analyzer you can investigate HDMI interoperability while the content is encrypted by viewing the protocol data
(data islands, infoframes, control and timing data) in real time and observing the behavior of the downstream sink
device. You can also capture the encrypted metadata and store it for detailed analysis. Note that you will not be
able to view the HDCP transactions between the source and the sink.
Note: On the 980 225MHz ―Gen 2‖ unit pass-through on the Tx port is limited to 165MHz. On the 980 297MHz
―Gen 3‖ unit pass through on the Tx port is up to 297MHz.
The Encrypted Link Analyzer is especially useful in the Capture mode. Typically in the Capture mode you will want
to specify a manual capture. With the manual capture, you can monitor the downstream HDMI sink device for a
particular behavior or symptom to a problem and then initiate a capture when the particular condition exhibits itself.
This ensures that the relevant data—data related to interoperability—is captured.
To connect a source under test to a sink device in Encrypted Link Analyzer mode:
1. Connect the HDMI-to-HDMI cable provided from your HDMI source device under test to the topmost HDMI
connector on the back of the 980 Protocol Analyzer. Refer to the picture below.
2. Connect a second HDMI-to-HDMI cable from the HDMI display device to the bottom HDMI connector on the
back of the 980 Protocol Analyzer. Refer to the picture below.
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August 5, 2011