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FLEXMod 311
DVB-C Modulator with embedded Remultiplexer
Integrated solution for the distribution/regeneration of DVB-C services. The system is composed by a demultiplexer/multiplexer and a DVB-C modulator with RF output. Easily configurable through a UART serial port, allows the development of a complete and very compact modulation system.
Remultiplexer specifications

  • ASI and SPI TS inputs.
  • ASI and SPI TS outputs.
  • Automatic recognition, analysis and demultiplexing of the incoming services.
  • Visualization of the Input/Output TS bandwidth.
  • Selection and removal of unwanted services.
  • QoS (Quality of Service) function for the selected services.
  • LCN (Logical Channel Number) insertion for the selected services.
  • NIT (Network Information Table) insertion for a correct Bouquet generation.
  • Automatic service monitoring and PID tracking for the desired services.
  • Supports Service-ID remapping.
  • Embedded DVB-Tables regeneration.
  • Embedded remultiplexer for TS reconstruction.
  • PCR restamper for a correct timing reconstruction.
  • Non-volatile memory for system configuration.
  • Easy configuration through asynchronous serial port with high-level commands.
  • No need for additional programming on power-up.
Modulator specifications:

  • QAM Modulator ITU-T J.83 Annex A/C, DVB-C (ETS 300 429)
  • Selectable RF power output up to -7dBm
  • Enhanced digital filtering for improved adjacent channel packing
  • The internal oscillator can be locked to an external arbitrary clock source or to a GPS pps reference clock
  • Support to SFN-Link (packet signature for compatibility with DVB-T SFN distribution networks)
  • Frequency range 0 - 500 MHz RF out through internal 1 GHz DAC.

  • Modulation type: ITU-T J.83 Annex A/C, DVB-C (ETS 300 429)
  • Symbol rate: 0-7000 Ms/s
  • Constellation: 16, 32, 64, 128 e 256 QAM
  • Spectrum mode: Normal/Inverted
  • PCR Restamper: Selectable ON/OFF
  • Output Frequency: 0-500 MHz 1 Hz Step (Internal 1Ghz DAC)
  • Output level: -7 dBm typical
  • MER: ›43 dB typical
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