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COFDM-COFDM CI

Ref. 563401

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Telev茅s reserves the right to modify the product.The product may be different than shown in the picture.

Transmodulator that demodulates a DTT MULTIPLEX, obtaining the MPEG-2 Transport Stream that can be edited to remove and/or decryption of services. After processing, the Transport Stream is modulated in a new DTT MULTIPLEX.

  • Total or selective deleting of services from the received Multiplexes to avoid being detected (and stored) by the receiver (STB).*
  • Edition of TS_ID to facilitate detection of programs / services in the receiver (STB).*
  • Edition of Network_ID, Original Network_ID and Cell_ID to control network IDs.
  • PID filtering, allows you to delete services not interested in a multiplex (exploiting the occupation). Very interesting feature when used with a CAM.
  • Allows you to assign an LCN (Logical Channel Number) to the services present in the output, which facilitates the management of channels in the receiver (STB).*
  • It allows the regeneration of the COFDM signal when its impulses are deteriorating and have achieved a degree of degradation that prevents proper decoding by the STB. Given the nature of the digital signal through its regeneration is achieved it is again identical to the original signal..

 

Reference  563401
 
 
 
 
 
 
 
 DTT
INPUT
 
 
 
 
 
 
 
 
 
 
 
 DTT
 
 
 
 Frequency range  MHz  177,5...226,5 (VHF) / 474...858 (UHF)
 Frequency steps  KHz  125, 166
 Locking margin  KHz  ± 500
 Input level  dBμV 49 - 90
 Input loop-through losses  dB  ≤ 1,5
 Input line powering for preamps Vdc  0, 12, 24
 Input return loses (typ.)  dB  > 10
 Impedance Ω  75
 
 
 
 DVB-T
 
 
 
 Modulation   COFDM
 Guard interval  μs  1/4, 1/8, 1/16, 1/32
 Scrambling   DVB EN 300744
 Interleaving   DVB EN 300744
 FEC inner code   Viterbi (1/2, 2/3, 3/4, 5/6, 7/8)
 FEC outer code   RS(188/204)
 Bandwidth  MHz  7,8
     
 
 
 
 
 
 
 
 
 
 
 
 DTT
OUTPUT
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 COFDM
 
 
 
 
 Modulation (Constellation)   COFDM (QPSK, 16QAM, 64 QAM)
 Guard interval   1/4, 1/8, 1/16, 1/32
 Scrambling   DVB EN 300744
 Interleaving   DVB EN 300744
 FEC   Viterbi (1/2, 2/3, 3/4, 5/6, 7/8)
 PCR Correction   yes
 Services deleting   yes
 Network_ID   yes
 Original Network_ID   yes
 Cell_ID   yes
 TS_ID   yes
 Spectral inversion   Normal, Inverted
 Bandwidth MHz  7, 8
 
 
 
 
 RF
 
 
 
 Frequency range MHz  177,5...226,5 (VHF) / 474...858 (UHF)
 Frequency steps  KHz  125, 166
 Output level (max. typ.) dBμV  80 ± 5
 Output level regulation margin  dB  > 15
 MER  dB  > 32
 Output loop-through losses  dB  ≤ 1,5
 Output return losses (typ.)  dB  > 12
 Impedance  Ω  75
     

 GENERAL
  

 Powering voltage  Vdc  24
 Consumption mA  250 (0 Preamp. / 0 CAM), 300 (0 Preamp. / 1 CAM)
300 (1 Preamp. / 0 CAM), 340 (1 Preamp. / 1 CAM)
 Ingress protection IP 20
Dimensions (W x H x D) mm 50 x 216 x 175

 

 

Additional Infomation
Pictures: 
Technical manuals: 
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