Quantum Data Gen 2 980, User Manual

Page: 276 / 315

980 HDMI Protocol Analyzer User Guide Rev. A1
Page 276 December 19, 2012
15.1 Generator Playback function
The Playback function enables you to make a capture from any HDMI source device and play it back to an HDMI
sink device under test.
The captured file will play back the captured video and audio and metadata in a loop. At this time we do not
recommend capturing and playing back compressed audio. It is possible but the results may not be consistent.
Playing back LPCM will work reliably but care has to be taken to ensure that the number of frames captured and
saved is consistent with the frame rate. Examples are provided in the procedures below.
Note : If the content is encrypted with HDCP you cannot play the capture back.
Quantum Data provides a command line interface and a set of utilities that enable you to modify a captured file to
make anomalous files for robustness testing. This feature is not documented in this User Guide but is available
through application engineering and customer support.
15.2 Using the Playback Function through the 980 GUI Manager
The procedures below describe how to use the 980 HDMI Protocol Analyzer to playback a stored capture file. You
first need to make a capture and store the file. You then can play that back to a sink device.
15.2.1 Workflow for the Playback Function
The high level workflow for the playback function is provided below.

Use a source device whose HDMI stream characteristics you wish to capture and connect it to the 980
HDMI Protocol Analyzer Rx port.

Put the source into the proper mode.

Capture a file from an HDMI source device.

Store the file on the 980 HDMI Protocol Analyzer.

Connect a sink device under test to the 980 HDMI Protocol Analyzer Tx port.

Playback a stored capture file.
15.2.2 Playback procedures – HDMI Source and Sinks
Use the procedures below to capture a file and play it back to a sink device.
To make the physical connections for playing back HDMI capture files:
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 HDMI Protocol Analyzer. Refer to the illustration below.
Note : For capturing a file you do not have to connect your HDMI sink device.