Barco STELLAR User And Service Manual page 175

Mpeg-2
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N
EDH control commands in the S
General
EDH commands
Example
TELLAR
EDH is as default enabled in the S
the encoder.
You may, however, control EDH in the S
management system where the following modes exist:
Parameter
OFF
The S
TELLAR
does not output EDH on the SDI output.
Transparent
The received EDH data is retransmitted without
changes. In that case the encoder and S
together are one EDH entity. If no EDH data is
received, either due to a Transport Stream loss or
when EDH is disabled in the encoder, the S
sets the UES flags active and clears all other flags.
This is the default mode of the S
Internal
The S
TELLAR
but outputs an SDI signal with all flags cleared. The
status flags from the P
This is used for applications where the S
the first node in an SDI chain, which could be the
case if the P
The S
generates a correct CRC-word and outputs it together with the EDH
TELLAR
flags.
When the SDI input signal has CRC errors in the active picture, the P
EDH flag for the "AP" group, and issues the message "EDH flag activated here" to
ROSA. The S
forwards the EDH data in the SDI output signal with the EDH
TELLAR
flag set indicating that the codec detected an error. A new, correct CRC-word is
inserted by the S
, and the SDI signal may now continue in a chain of SDI
TELLAR
equipment with EDH support.
so that it outputs EDH data received from
TELLAR
by using the ROSA control and
TELLAR
Explanation
does not analyze the EDH data and
TELLAR
.
TELLAR
does not analyze the incoming EDH,
, if any, are ignored.
OLARIS
has a composite input.
OLARIS
EDH control commands in the S
C
TELLAR
is
TELLAR
sets the
OLARIS
C-3
TELLAR

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