Testing Hdmi Infoframes (882 Only); Viewing Infoframe Contents (882 Only) - Quantum Data 881 User Manual

Testing HDMI InfoFrames (882 only)

Viewing InfoFrame contents (882 only)

Chapter 9 Testing HDMI Sink Devices
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This section provides steps on how to test handling of auxiliary (InfoFrame) packets by an
HDMI display. The 882 loads and sends default Auxiliary Video Information (XAVI), Audio
(XAUD), and Source Product Description (XSPD) InfoFrame packet buffers to the display
for each format (see table on page 268 for a list of HDMI formats). The XAVI and the
XAUD InfoFrame packets are sent at every frame (repeated mode), while the XSPD is
sent only once. The XMPG and XGIF InfoFrames are gated off and not enabled.
Note: This feature is not supported on the 881 generator.
HDMI provides various types of auxiliary data in the form of InfoFrames. InfoFrames allow
the HDMI source to keep an HDMI display informed as to "what is coming down the pipe"
so that it can present the content optimally—without any viewer intervention.
There are five different types of InfoFrames:
• auxiliary video information (AVI)
• audio (AUD)
• source product description (SPD)
• MPEG information (MPG)
• generic (vendor-specific) information (GIF)
Each type carries information regarding a different aspect of the HDMI audio/video
transmission.
The procedures below can be performed using the front panel or the command line
interface.
The 882 provides a convenient method for monitoring the InfoFrame content of the
transmitted HDMI signal. The procedure below describes how to view current InfoFrame
contents.
Note: This feature is not supported on the 881 generator.
To view current HDMI InfoFrame contents transmitted from the 882:
1. Set up the 882 for HDMI output. See
2. Press the Source key and choose a format suitable for the HDMI display (for example,
DMT0660). Refer to the table in
Alternatively, to select the format using the command line interface, enter the following
commands:
FMTP /tffs0/Library/Formats // Set format path to 882 memory
"Setting up the 882 for HDMI
"Format selection" on page 268.
testing" on page 272.