Running Hdmi Tests Using The Pass-Through Mode - Quantum Data 980 User Manual

980 User Guide

6.13 Running HDMI tests using the Pass-Through Mode

This section describes how to use the 980 Pass-Through feature in the Capture and Store mode. The
Pass-Through mode enables you to monitor the HDMI traffic passively between an HDMI source and an HDMI sink
device.
In the Pass-Through mode the 980 Rx port is connected to the source device under test and the 980 Tx port is
connected to a display device. The source device can be used with HDCP authentication and encryption but you
will not be able to see the encrypted data or video once the data is encrypted. If the video content from the source
device is encrypted with HDCP you will be able to see all the data until encryption is enabled. Once encryption is
enabled, you will only be able to see the DDC, CEC traffic and the timing parameters.
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. Only the 980 297MHz ―Gen 3‖ unit supports MHL.
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 Pass-Through mode. Exceptions only will
be covered in this section.
Pass-through is enabled through 980 Manager. Use the following procedures to activate and use the pass-through
mode.
To connect a source under test to a sink device in pass-through 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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Rev. B29
August 5, 2011