14MM-OH66 - Twin AV Encoder QAM/COFDM
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14MM-OH66 - Twin AV Encoder QAM/COFDM Packaging Image

Twin AV Encoder QAM/COFDM


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

  • Twin digital modulation solution with MPEG2 encoding of analogue audio and video signals
  • Output frequency range 45–862 MHz
  • QPSK, COFDM and QAM modulation is available
  • Use ASI input of output signals
  • SDI & CVBS input selectable
  • Input / output connectors are BNC and 3.5mm for audio

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Pack Quantity

Inner: 1 box of 1 piece


Module OH 66 Twin A/V-Encoder
Input Video Analogue
Input Format Composite FBAS-signal
Input Impedance 75 Ohm
Input Level 1 Vss ± 0.4 V
Frequency Range 20Hz-5MHz
Video Processing
Encoding Standard MPEG 2 ISO/IEC 13818-2 MP@ML (4:2:2)
Bit Rate 1.5-9 Mb/s in 1.5Mb/s-steps; CBR & VBR
Picture Size 720 Pixel horizontal, 576 Pixel vertical
Teletext Extraction from analogue video signal
Picture Format Support for 4:3 and 16:9 automatic detection by WSS
PID Setting Automatic; Manual overwriting possible
PSI/SI settings Automatic creation of PAT/
NIT setting with LCN Optional with CS77
Input Audio
Input Format Analogue (left/right) or digital (SDI with embedded audio)
Frequency Range 40–15000Hz
Audio Processing
Sampling frequency 32/44, 1/48 kHz
Encoding Standard MPEG 1 L1/L2 ISO/IEC 13818-3
Bit Rate Up to 192 kbit/s
Format Stereo, Joint Stereo, Dual, Mono
QAM or COFDM Can be selected by the modulation
Output Frequency Range 47–862 MHz
Spurious Outside TV Channel À50dB
Modulation Scheme 16-, 32-, 64-, 128-, 256-QAM
Output Frequency Steps 500KHz
Output Channel Bandwidth 8MHz
Output Level 88-103dBµV
MER ≥40dB
Symbol Rate 3.45–6.9 MS/s
Bit Stuffing Yes
PCR Correction Yes
Modulation Scheme COFDM
Output Frequency Steps 250KHz
Output Channel Bandwidth 7/8MHz
Output Level 82-97dBµV
MER ≥37dB
Modulation of Single Carriers QPSK, 16-, 64-QAM
FEC 1/2, 2/3, 3/4, 5/6, 7/8
Guard Interval 1/4, 1/8, 1/16, 1/32
FFT Mode 2k, 8k
General Data
Connectors Per channel 1 x BNC/
Video- / Audio-input 1 x stereo jack socket 3.5 mm
RF-Output F-connector
Operating Temperature -20° - +55°C
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