Modulators

DVB-T/T2, DVB-S/S2 and DVB-C

All modules support, full digital modulation and up-conversion, multiplexing, transparent pass through and PSI/SI/PSIP regeneration.

DVB-S/S2 Modulator
Appear TV’s leading edge DVB-S/S2 modulator is a fully frequency agile modulator aimed at modulating SD/HD services on to satellite. This high density modulator is capable of producing up to 2 DVB-S or DVB-S2 modulated channels simultaneously. The modulator can be integrated with all available modules making it possible to combine reception, descrambling, re-scrambling, multiplexing, PSI/SI/PSIP regeneration and DVB-S/S2 modulation in the same chassis. The solution offers broadcasters both: a higher rack density and lower power consumption, compared to alternative solutions. The DVB-S/S2 modulator is available in two different output configurations: IF or L-band.

 

Modulators

 

DVB-T/T2 Modulator
Appear TV’s advanced DVB-T/T2 modulator is a fully frequency agile modulator aimed at modulating SD/HD terrestrial streams for digital broadcast operators. This high density modulator is capable of producing up to 4 DVB-T or 2 DVB-T2 modulated channels per module, offering more throughput and improved error resiliency. A CATV version for COFDM modulation with 75 ohm output is also available.

QAM Modulator
Appear TVs compact QAM/DVB-C solution generates 16 QAM frequencies for Cable Networks. Based on a full digital-modulation and up-conversion architecture, the QAM Output module delivers a clearer signal giving the best possible performance. The head-end can be provided with IP, ASI, DVB-S/S2, DVB-T/T2 and DVB-C input and the QAM module can be combined with the decoder modules and FM radio modules in the same chassis making it possible to manage both digital services and analogue services from one common platform through a single user interface.

DVB-S/S2 Modulator

  • Leading-edge DVB-S and DVB-S2 modulator
  • Compatible with DVB-S and DVB-S2 specification (CCM only)
  • 2 fully frequency agile carriers per module (1 per output)
  • Up to 12 outputs in 1RU chassis
  • Up to 32 outputs in 4RU chassis
  • L-band (950-2150 MHz) or IF (70-200 MHz) output
  • Symbol rate: 0.5 to 45 MBaud
  • Output level: -20 to 5 dBm per carrier
  • Constellations: QPSK, 8PSK, 16APSK, 32APSK
  • Non-linear and linear precorrection
  • Advanced redundancy options

QAM/DVB-C Cable Modulator

  • QAM modulation with extreme density
  • Compatible with ITU J.83 Annex A (DVB-C), B and C
  • 16 carriers per module (8 per output)
  • 4 independent channel groups, each with 4 adjacent channels
  • Channel spacing in group: 5, 6, 7 or 8 MHz
  • Output level: -12 to 2.2 dBm per carrier
  • Output range: 47 to 862 MHz
  • Symbol rate: 4.48 to 7.00 Mbaud
  • Constellations: 32QAM, 64QAM, 128QAM and 256QAM

 

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