Testing Hdmi Audio Using An External Audio Source - Quantum Data 881 User Manual

Testing HDMI audio using an external audio source

882 Video Test Instrument User Guide (Rev A.35)
8:DOLBY(AC3), 2.0, 48000.00 [2khz2ch-0dB_ac3.pcm]
9:DOLBY(EAC3), 2.0, 192000.00 [1khz2ch-20dB_ec3.pcm]
10:DOLBY(EAC3), 5.1, 192000.00 [1khz51ch-20dB_ec3.pcm]
11:DOLBY(EAC3), 7.1, 192000.00 [1khz71ch-1frame_ec3.pcm]
12:DOLBY(TRUEHD), 7.1, 192000.00 [1khz71ch-20dB_mlp.pcm]
13:DOLBY(TRUEHD), 2.0, 192000.00 [nxt2ch2s.mlp.pcm]
CAUD 8 // Sends a 2 channel Dolby AC3 clip with 192kHz sampling rate
at 0dB out the HDMI output.
4. Enable and view image versions to select the other audio formats as follows:
a. Press the Options key. The following menu appears on the 882's display:
-More
-NoGamma
-Noise
b. Choose the More item by pressing the adjacent soft key until a + and Rendition
appears next to the item.
+More Rendition: 000
-NoGamma
-Noise
c. Press the + and - keys to advance through the image versions to change the audio
intensity.
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).
• The proper audio format is shown on the Audio/Video receiver.
The 882 enables you to inject audio signals from an external SPDIF source (such as a
DVD player) into the HDMI content stream. You can input IEC 61937 non-linear PCM
encoded audio stream or compressed audio streams (for example AC-3 and DTS) into the
SPDIF interface for output through the HDMI Tx connector.
Red+
Green+
Blue+
Red+
Green+
Blue+
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