Quantum Data 881 - Manual (Page 351)

881/882 Video Test Generator User Guide (Rev A.22) 333
Note: Depending on the selected image, pressing the + and - keys will change the
amplitude or frequency of the HDMI audio output.
Alternatively, to enable and view an image version using the command line interface,
enter the following commands:
ISUB 1 // Enables sub images
IVER 1 // Specifies the first image version
IMGU // Activates the image version
5. To verify proper HDMI audio handling, check the following on the HDMI display:
• Audio is output from the proper channels (left, right, or both).
• When amplitude is adjusted, the volume is subsequently changed.
• When frequency is adjusted, the pitch is subsequently changed.
6. When testing is complete, disable image versions by pressing the Options key and
choosing More until a - appears next to it.
Alternatively, to disable image versions using the command line interface, enter the
following command:
ISUB 0 // Disables sub images
7. Press the Content key and choose the AudioRAT image to test the sampling rate.
The AudioRAT image appears on the connected HDMI display. The image shows the
current settings for the HDMI audio output. Note that the sampling rate image
(AudioRAT) applies to all audio channel.
Alternatively, to select the AudioRAT image using the command line interface, enter the
following commands:
IMGP /tffs0/Library/Images // Set image path to generator memory
IMGL AUDIORAT // Loads the AudioRAT image
IMGU // Activates the AudioRAT image