digital audio
modular
processing system
C8000
4/8/16 channels DSP with SDI & system-bus I/O
C8492(B)
page
13/30
Important Note! If System Bus Access is disabled, you must do the DSP signal routing exclusively on
the DE-EMBED and EMBED panes (see further below).
Enable Bus Driver
[ON/OFF]
You can disable the output drivers by un-checking the
Enable Bus Driver check box. The state of this check box also
depends on the setting of SW1 on the module PCB.
If SW1 #1 is turned off, this checkbox will be off after a power
cycle. You can turn it on temporarily to check out your settings but
you must keep in mind that after the next power cycle it will be off
again unless you have turned SW1 #1 on.
This procedure is useful if you must insert a module into a frame
that is on air and other services must not be interrupted or
disturbed.
Meta Data Routing
The metadata transport occupies one system bus line for one
stream and uses the asynchronous data format specified by the
SMPTE, that is outlined in the recommendation RDD-6 (2008).
(See SMPTE 2020 for reference of VANC metadata embedding).
Important Note! This transport mechanism is not compatible with the previously used proprietary
technology from Junger. I.e. you can not interconnect legacy Dolby modules with the C8492(B)
for metadata transport. We recommend using the successor platform C862x
(C8621 Dolby Decoder, C8631 Dolby E encoder and C8632 Dolby Digital / Digital plus encoder).
From System Bus
Select a bus as a source for metadata that must be embedded into
SDI VANC (vertical ancillary data space).
From SDI
Select a SDID of an embedded metadata stream (if present) that
De-Embedder
you would like to send to a module via the system bus.
If you click into the SDID box a pop-up appears:
that shows you which streams are available.
To System Bus
Decide which system bus you want to use to move
metadata from the VANC de-embedder along the
c8k back plane.
To SDI
Embedder
Delete Existing
[ON / OFF]
Metadata
Deletes incoming VANC meta data from the line where they are
embedded.
LINE
[11 … 19 / AUTO]
Here you select a line number that must be used to embed the
metadata. AUTO selects the next possible line that is not in use for
any VANC service. If you select the line that carries the incoming
metadata, these metadata will be removed before the new ones will
be embedded. To avoid difficulties with different video standards
the line count for the VANC embedder starts with line #1.
SDID
[1 … 9]
Here you select the SDID that is associated with the respective
audio signal pairs (see SMPTE 2020 for details).
