China CATV Digital Head-End DVB-T Modulator

Description:
WDQ-3300 DVB-T according to DVB-T standard output the RF signals, which can be transmitted through HFC and MMDS networks. It is widely used in digital TV, data broadcasting, VOD, Internet, video conference systems. The WDQ-3300 has very convenient management interface, the user can complete all operation via local keyboard and LCD display on device, or access through the Ethernet port on device.
Features:
Compliant to EN300744 standard
Support 6MHz/7MHz/8MHz band width
Error correction follows DVB-T standard
Operable in QPSK, 16QAM, 64QAM mode
Support 2K/8K carrier-wave operating mode
Input interface: ASI and SPI(DS3/E3 optional)
Input bit rate:1.5~31.67Mbps
Output band width:6/7/8MHz
188 and 204 packet automatic identification, shows real-time data format
Advance output TS efficiency
Capable of NIT mapping and sending; supports over 44 NIT mapping frequency
Holds 8 groups of PID filtering and re-mapping function
Support all PSI/SI data abstraction, modification and analysis
Null packet filtering and filling
Performs multiple PCR correction simultaneously
Monitor and test real-time enter/valid bit rate
Self-adjust filter circuit design in order guarantees superb SNR (out of band)
-20dB RF test output is available (IF output is options)
Failure alarming and power off memory
Local keyboard control and LCD display, or access via Ethernet link
Application:
DVB-T modulation
Compatible:
MPEG-2(ISO/IEO ISO 13818&ISO11172-31)
EN300 744(DVB-T) standard

ParameterSymbolDescriptionUnitRemarkMechanical dimensionHeightH42mmabout 1UWidthW434mmabout 17"DepthD340mm ASI Input (with loopout )Number of ASI input-1 Impedance-75W Connector-BNCNA Maximum bit rate-108Mbps TS packet format-188 or 204ByteAutomatic detectionTransmission format-Data packet or data burstNA SPI InputNumber of SPI input-1NA Connector-DB-25 femaleNA Packet format-188 or 204Bytewithout channel codingMaximum bit rate-108MbpsLVDS modeE3/DS3 Input(options, with loopout)Number of E3/DS3 input-1NAG.703 standardImpedance-75W Connector-BNCNA TS packet format-188 or 204Byte Data bit rate-E3/DS3(34.368/44.736)Mbps 10MHz Clock ReferenceInternal Stability-0.1ppm External Impedance-50W External Connector-BNCNA External Input level 55~70dBuV RF Output(with -20dB test output)Impedance-75W Connector-BNCNA Frequency-48~860MHz Output level-100~115.5dBuVStep:0.5 dBuVModulation SpecificationModulation scheme-QPSK,16,64QAM FEC-1/2,2/3,3/4,5/6,7/8 Guard Interval-1/4,1/8,1/16,1/32 RS encode-204byte mode IFFT-2K/8K Modulation Error RateMER≥40dB Signal to noise ratioSNR≥50dB Bit Error RateBER≥9x10E-9