Nevion ARC-SD-DMUX - Manual (Page 17)

ARC-SD-DMUX Rev. B
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3.12 Video DAC
The video DAC has three outputs, with the following combinations available:

CVBS/CVBS/CVBS

CVBS/Y/C

Y/Pb/Pr

R/G/B
The board can handle 50Hz-based and 60Hz-based input signals but can not convert
between them. The modulation setting is split in two; one to select between NTSC and PAL
M output for 60Hz-based sources, and one to select between PAL B/G and PAL N for
50Hz-based sources.
The following modulations are available for CVBS and S-Video:

PAL B/G

PAL N

NTSC

PAL M
It is also possible to turn black setup (“pedestal”) on or off for NTSC.
3.13 Audio overview
Figure 3: Audio function block
3.13.1 Audio de-embedder
The Audio de-embedder extracts all audio embedded in the video stream. The de-
embedder is always enabled.
3.13.2 Audio delay
An audio delay can be specified relative to the video output. It is situated before the audio
cross point matrix and is common for all de-embedded channels. The audio delay is
specified in terms of 48 kHz audio samples and can be set to positive or negative values.
Note: As the audio delay is relative to the video output it is possible to specify
an audio delay that will actually be too small. This will cause audio errors.