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User must specify IP addresses and UDP port for every TS he want to
convert (IP addresses should not be repeated).
The synchronization algorithm of the module requires that each TS
has been generated in a constant Packet Rate at the origin.
IMPORTANT NOTE: There are applications that generate IP streams to
remove null packets from the original stream. Then the packet rate is no
longer constant. In this case the module will not properly synchronize the
stream.
The DT-324D module can be manufactured with two different
configurations. Each of these allows a different number of TS IP inputs and
to include some multiplexes at the outputs. By this way they can generate
MPTS (Multiple Program Transport Stream) from SPTS (Single Program
Transport Stream). Available configurations are:
•
SPTS Configuration:
In this configuration are included multiplexers inside the module that
allows combining different SPTS (Single Program Transport Stream)
to deliver four MPTS each output, adding PAD tables, SDT tables,... In
particular, 4 input SPTS by ASI channels are supported. These are
multiplexed, forming MPTS delivered at the outputs.
This configuration requires some considerations:
•
SPTS streams must contain a SPTS_PAT table (PAT with only 1
service_id, indicating 1 PMT).
•
Each one of the multiplexers extracts up to 4 streams (each one
identified with a different PID) from each input IP stream
changing the original PIDs. Then each stream inside an ASI has its
own and unique PID. PAT and PMT tables are regenerated and
also added to the NIT and SDT tables (also regenerated).
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QUICK CONFIGURATION GUIDE DT-324D
Figure 2.
07/2012
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