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QAM Modulator



Part Number : NTX-MOD2104-C

NTX-MOD2104-C 4 in 1 QAM is a cost effective integrated QAM modulator designed byDEXIN Company. This device is integrated up to 4 Channels QAM modulating carrier outputs, in which each has independent signal channel encoding and direct RF output. Therefore, the device is featured with excellent RF performance index. It supports 4channel ASI inputs. Alternatively, this device can take various RF inputs of DVB-S/DVB-C/DVB-T signals by installing the relevant build-in tuners. Hence, one PCS 4 in 1 QAM modulator can work as 4 standalone QAM modulators, significantly reducing the network operators head-end cost. MOD2104-C can also support local and remote control to set its working parameters.

  • Fully support EN300 429/ITU-T J.83A
  • 4 adjacent channel QAM carrier
  • 4 x ASI inputs and 188/204 byte TS packet support
  • DVB-S/-S2/-C/-T RF input (optional)
  • Accurate PCR adjusting support
  • 16,32,64,128,256 qam constellation support
  • Symbol rate adjustment range: 1.0 Mps ̴7.0 Mps
  • SI editing support
  • RF output frequency: 30MHz ̴ 1000MHz, 1khz step
  • RF output level: -16 dbm ̴0dbm, 0.5db step
  • Excellent RF output performance index, MER≥40db
  • LCD & Keyboard operating
  • NMS support


Input 4 x ASI inputs, BNC interface DVB-S/-S2/-C/-T RF input (optional)
Modulation Parameters QAM channel 4
Standard EN300 429/ITU-T J.83A
Symbol Rate 1.0 ̴7.0Mbps, 1kbps step
Constellation 16/32/64/128/ 256QAM
FEC RS(204,188)
RF Output Interface F interface, 75Ω impedance
Frequency Range 30 ̴ 1000MHz, 1khz step
Output Level -16dbm ̴ 0dbm (each carrier) 0.5db step
MER ≥ 40db
ACLR (Adacent Channel Leakage Ratio) - 60dBc
System LCD/Keyboard operating and NMS support
English and Chinese interface conversion
General Dimensions (Width x Length x Height) 482mm x 455mm x 44.5 mm
Approx.weight 3.2 Kg
Temperature Range 0 ̴ 45ºC (Operating), - 20 ̴ 80ºC (Storage)
Power Requirements AC 110V +- 10%, 50/60Hz or AC 220V +- 10%, 50/50 Hz
Power Consumption 25W