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0445-2013

Remultiplexing 

Description: 

The creation of a multiplex in the network’s headend, with attractive TV services
to the user acquires a new dimension with this technique 


 

In the field of transmodulating headends, the remultiplexing refers to the ability of a device to generate a TV package with contents from different satellite transponders.

 

Until now, the services that were in a QAM or COFDM multiplex came from a single transponder DVB-S/S2.

The transmodulators ref. 564201 and ref. 564101, are T0X modules capable of remultiplexing, with outputs COFDM and QAM respectively.

From the point of view of installation, these transmodulators optimize the spectrum because the occupation of the multiplex is performed with the desired services.

This improvement, along with a better use of the spectrum, provides greater energy efficiency: more services in less power consumption.

Despite being able to process signals from three transponders, using two entries it is assumed that at least two of them must be in the same band and polarity (same LNB downlead). This detail is important when planning a specific map of channels and services.

In addition, services that are passed through the CAM must have the same encryption system.

The benefits that provide more value to these modules are two:

  • Editing the SID (Service Identifier) that allows to do changes in the TV channels distributed in a multiplex without having to retune the TV or STB in the facility.
  • Editing the PID (Package Identifier), for the selective removal of one of them, and therefore the CAM is not “overloaded” when several services have to be decrypted 

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