14MM-MDX420 - Multi-Channel Twin AV to DVB-T Modulator
14MM-MDX420 - Multi-Channel Twin AV to DVB-T Modulator Packaging Image

Multi-Channel Twin AV to DVB-T Modulator


Headend Equipment

Matchmaster has a full range of Headend Equipment from entry level to complex systems, including engineering support and system designs. Matchmaster can offer simple Channel Filters with AGC through to complex DVB modules for any type of broadcast including Encoders, Modulators & Transmodulators for DVB-T, DVB-C, DVB-S/S2, IP, ASI, SDI, FM and many more.
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Features and Benefits

  • AT series family DVBT twin modulators totally agile and independent channels
  • AV composite to DVB-T COFDM modulator
  • Programmable twin modulators
  • Rack mountable system
  • Loop input and output with F connection


Video Input Frequency Range 20Hz - 6MHz
Level/Impedance 1 V ± 0.1V/75 Ohms
Audio Input Frequency Range 20Hz-15kHz
Level/Impedance 775mV/10 kOhms
Level Adjustment 6 - -6dB (2dB step)
Processing Video Encoding ISO/IEC13818-2 MPEG-2 MP@MI
Resolution 720 x 576 (at 25 fps), 720 x 480 (at 30 fps)
Frame Rate 25 max. PAL, SECAM, 30 max. NTSC
Compressed System Bit Rate 2-9 Mbps
Processing Audio Encoding ISO /IEC11172-3 (MPEG1 audio) layer 2 compliant
Sampling Rate 44.1kHz
Bit Rate 256Kbps
Audio Mode Stereo
Modulation MER ≥35dB
Modulation QPSK, QAM16, QAM64
Channel Bandwidth 7/8MHz
Guard Interval 1/4, 1/8, 1/16, 1/32
Code Rate 1/2, 2/3, 3/4, 5/6, 7/8
Transmission 2K
RF Output Frequency Range 110 - 860MHz
Level/Impedance 85dBµV/75 Ohm
Output C/N ≥50dB
Output Level Adjustment 0 - -15.5dB by 0.5dB step
Frequency Range of RF Combining 47-2150MHz
DC Pass Through 0.3 A
Combining Through Loss Terr/SAT 1.5/2.5dB
Return Loss ≥10dB
Current Consumption 12 V 0.65 A
Operating Temperature 0 - +50°C
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