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CG2CT 860 C
2.5 h
ow
the
tps
module
works
After decoding the satellite signals, the demodulated data streams can be
accessed via the integrated TPS module. These data streams, also called trans-
port streams, contain several stations with all their components (video, audio,
data and service information), which can be changed using the TPS module.
s
tation
filter
Individual stations can be deleted. This reduces the data rate and, conse-
quently, the output data rate.
C
hanging
the
t
r ansport
strea m
and
orgnet-id
The transport stream ID can be changed. If the stations of a transponder are
split into the transport streams of different channel strips, a new identification
must be allocated to the "new" transport streams to realise the channel search
of the settop boxes connected without mistakes.
If the ORGNET-ID is changed a new NIT must be generated.
C
hanging
the
nit
The transport stream contains data in the form of tables which the receivers
evaluate and require for convenient use. The TPS module can adjust the "Net-
work Information Table" (NIT) to accommodate the new stations output data
(incl. LCN). The "NIT" contains data which is required by the set-top boxes
connected to the cable network for the automatic search feature.
3
i
nstallation
– Ensure the head-end station is mounted so it will not be able to vibrate.
Avoid, for example, mounting the head-end station onto a lift shaft or any
other wall or floor construction that vibrates in a similar way.
– Before installing or changing a module, switch off the head-end station or
unplug the power cable from the mains power socket.
– Take measures to protect against ESD!
• Open the housing of the head-end station in accordance with the assembly
instructions for the CSE 2800.
