Appear TV DC100X - Page 81

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o DVB (SDT)
o MPEG
o ATSC
o OFF
De-jitter
PCR dejitter will be default on when enabling a new de-encapsulation. The user can
choose to specify the PCR PID and to do CBR dejitter if transparent output routing
CBR if transparent
This de-jitter mechanism will use the incoming CBR total bitrate as a guide for the
clock source of the stream. This is only valid for transparent mapped and PID
imported outputs
Preferred PCR pid
This allows you to set a PCR PID in the input multiplex as a priority to use for de-
jittering. If this PID is not available, then the next valid detected PCR will be used.
This is only valid for transparently mapped streams.
Reduced Input buffer
size
Enable or disable Reduced Input Buffer for introducing a low latency dejitter
function.
5.4.1.4 Seamless IP Input
The Seamless IP input module allows two input interfaces to be connected to different network sources, but
for the system, this is a single module. The same multicasts are subscribed to on both interfaces. These
multicasts will generally come from the same synchronized source, but if not, then it is possible to use the
‘Non Syncronised’ option which will allow fast, but not seamless switching.
All function and status normally associated with IP input cards are present for the logical module. In addition
data rate, sequence errors, and relative delay for each stream are reported for every input.
Moreover, alarms related to the network interface and stream alarms (e.g. “No bitrate”) appear as warnings
if they occur only on a single interface. “Link down on interface A or B” is a major alarm. If alarms appear on
both interfaces, they will act as for normal IP input cards, and be a single alarm with the same alarm ID as
used on other IP input cards.