Digital Headends COFDM,QAM

Transmodulator headend

Transmodulation is the conversion from one standard to another. We may use the DVB-T or DVB-C standard for the transport of DVB-S (2) signals. Another possibility is the digitalization and modulation of analog signals (A / V streams), according to the same DVB-T/C standard. The advantage of this approach is that the existing coax network can be used for the transport of TV, radio and audio-video streams.

We provide a range of modular transmodulator modules, the proQuad range. These modules can be used to set-up your own headend reception system. The ProQuad enables receiving and distributing SD and HD satellite signals and analog A/V-streams in collective systems through an existing coaxial cable. This makes it possible to add satellite channels without changing the whole infrastructure.

DVB-T Rack Ant systems

Advantages

  • Up to 160 programs per 19” sub-rack
  • Modular solution: combine DVB-S(2) and A/V-streams
  • 4 tuners can independently demodulate 4 SAT transponders or 4 DVB-T/C multiplexes
  • COFDM (DVB-T) and QAM (DVB-C) product range
  • No set-top box needed for every user
  • Can be integrated in existing coaxial network
  • Superior image and sound quality
  • Combination of free-to-air and pay channels
  • Custom channel package per installation
  • Easy installation and configuration

Features

DVB-S2 → DVB-T/C module

  • up to 8,16 or 32 SD or HD channels per module
  • up to 12 decoded channels per module (with associated multiservice CAM)
  • 4 SAT inputs with 4 active loop-through outputs
  • 4 tuners allow to independently demodulate 4 transponders
  • 1,2 or 4 multiplexes at the output per module
  • user friendly, web based configuration
  • remote accessible
DVB-S2 → DVB-T/C module

DVB-T → DVB-T/C module

  • up to 32 SD or HD channels per module
  • up to 12 decoded channels per module (with associated multiservice CAM)
  • 1 DVB-T input with 1 active loop-through output
  • 4 tuners allow to independently demodulate 4 transponders
  • 4 multiplexes at the output per module
  • user friendly, web based configuration
  • remote accessible
DVB-T → DVB-T/C module

A/V → DVB-T/C encoder module

  • 4 A/V stereo inputs
  • 2 multiplexes at the output per module
  • user friendly, web based configuration
  • remote accessible
A/V → DVB-T/C encoder module

Profiler – Programmable filter, equalizer, amplifier

The profiler headend receives terrestrial signals (DVB-T) coming from the transmodulator headends or directly from terrestrial antenna’s. The profiler can amplify, filter and equalize several DVB-T channels. This is an indispensable part of a professional DVB-T headend. Following figure shows a typical transmodulation headend system:

Profiler – Programmable filter, equalizer, amplifier