COFDM QAM Headend

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.

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-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
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
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: