Cobalt Digital Inc 9926-2HtoS, Руководство по эксплуатации продукта

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9926-xHtoS-OM (V1.2) 9926-XHTOS PRODUCT MANUAL
1-9
Introduction
9926-xHtoS Functional Description
Video Output Crosspoint
Used in common as a routing source for
Path 1
thru
Path 4
is a four-output
video matrix crosspoint that allows independently applying the card
processed video output to any of the four card discrete coaxial outputs
(
SDI OUT 1
thru
SDI OUT 4
).
Audio Processor Description
The audio processing block consists of an Input Audio crosspoint/mixer
(which directs selected input audio to the processing paths) and an Output
Audio crosspoint/mixer (which selects from any of the four path’s embedded
audio sources).
Input Audio Processing
Note: Path 1 thru Path 4 have individual independent digital audio routing controls
for each of the processing path’s 16-channels of embedded audio.
The input audio processor operates as an internal audio router to each path’s
Audio Bus Channel bank. This function chooses from the following inputs:
•
16 channels of embedded audio from the path SDI video input
(default 1-to-1 routing to card internal audio buses)
•
Downmixer outputs (see below)
•
Flex Mix summing node outputs (see below)
The input audio processing subsection is built around card internal
16-channel audio buses corresponding to each processing path (Path 1 thru
Path 4). Each 16-channel bus receives inputs from an input routing crosspoint
that routes audio on Audio Bus Channels 1 thru 16 corresponding to each
processing path.
Input Audio Down Mix Function. (See Figure 1-2.) The Audio Down
Mixer function provides for the selection of any five path embedded channels
serving as Left (
L
), Right (
R
), Center (
C
), Left Surround (
Ls
), and Right
Surround (
Rs
) individual signals to be multiplexed into stereo pair Down Mix
Left (
DM-L
) and Down Mix Right (
DM-R
). The resulting stereo pair
DM-L
and
DM-R
can in turn be routed to any embedded audio bus pair as desired.
Figure 1-2 Audio Down Mix Functional Block Diagram with Example Sources
DM-L
L
R
C
Ls
Rs
DM-R
Emb Ch 1
Emb Ch 2
Emb Ch 3
Emb Ch 5
Emb Ch 6
Embed Ch 1 - Ch 16