SMCNS T-DMB Gap Filler is a solution for QPSK/OFDM compliant digital transmission that receives RF signal from satellite and retransmits this signal without signal distortion. The design of the rack is very suitable for easy maintenance and service.
Each unit can be easily removed and checked. All internal cables are allocated in the proper raceways. Moreover every unit is continuously monitored in real time through suitable sensors and display. A controller unit is connected to the transmodulator, the up-converter, the amplifier and the monitoring circuits via a RS232C.

     QPSK/OFDM Transmodulator

     Compliant with ETS 300 421, ETS 300421 and

         ETS 300 799

     High performance OFDM modulator (MER, IF stability)

     Low phase noise up-converter

     Linear power amplifier

     Band pass filter

     Local monitoring and control via RS-232C

     Excellent stability of performances

     Input

         - Frequency : L-Band

         - Level : -65 ~ -25 dBm

         - Impedance : 75 Ohm

     QPSK Demodulation

         - Decoding : DVB (ETS 300421)

         - Input Code Rate : 1/2, 2/3, 3/4, 5/6, 7/8

         - FEC Block Code : Reed Solomon (2.4, 188)

         - Symbol Rate : 1~45 Msymbol/sec

     OFDM Modulator

         - ETI Interface : ETS 300799

         - Channel Coding : ETS 300401

         - OFDM Generation : ETS 300401

         - Input Frequency : 38MHz

     RF Output

         - Bandwidth  : 6 MHz

         - Frequency Stability :±5 KHz

         -  Spurious : -55 dB

         - C/N : 46dB

         - Output Impedance : 50 Ohm

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