Mainly features
● EN300744,support 6MHz/7MHz/8MHz bandwidth
● Error correcting codes is fully in the line with DVB-T standard
● Work in QPSK,16QAM,64QAM
● Support the 2K/8K carrier wave working mode
● FEC encoding support 1/2,2/3,3/4,5/6 and 7/8
● Protection time Interval: 1/4,1/8,1/16,1/32
● Input interface: ASI and SPI (E3/DS3 optional),provide corresponding loop output interface
● The input data bit rate range : 1.5～31.67Mbps
● Input signal bandwidth: 6/7/8MHz
● RF range: 48～860MHz
● Output electric level rang: 100dBuV～115dBuV (Stepping)
● 188/204 packet length adapting , display the input date format real-timely
● Use Large cache design ,ASI interface supports burst and uniform input stream
● Improve output bit stream efficiency
● Have functions of NIT mapping and transmission,Support over 44 NIT mapping of frequency points
● 10 groups of PID filtering and re-mapping
● Support extraction, analysis and modification of PSI/SI
● Filter the empty input data packet and fill the output data
● PCR correction function , accurate correct the PCR in the input data separately
● Test and display the input system bit rate and effective rate real-timely
● Adaptive filter circuit design ,ensuring the excellent band rejection
● Provide -20dB RF test interface , IF output (Optional)
● Fault alarm display
● LCD display
● Network controlling interface , realizing Centralized network management, remote upgrade and maintenance
● Power-down memory function.
Performance and Parameter
1. Data interface.
1.1 ASI interface (Asynchronous serial interface)
A. Input
● Socket: BNC
● Impedance: 75Ω
● Packet format: 188 or 204 bytes (No channel coding)
● Channel data rate: 270Mbps
● Max. Effective data: 31.67Mbps
● Standard: DVB standard,
B Loop output
● BNC Socket: BNC
● Impedance: 75Ω
1.2 SPI input interface (Synchronous Parallel Interface)
● Socket: DB-25
● Packet format: 188 or 204 bytes
● Standard: DVB Compatible, LVDS working method
2. IF interface(Optional)
● IF loop output
● Connector : BNC
● Impedance : 50Ω
● Center frequency: 35-37MHz(adjustable )
● IF bandwidth: 6/7/8MHz
● Return Loss: ≥18dB
● Output electric level: 98±1dBuV(rms)
3. RF interface:
A. RF output:
● BNC Connector: BNC
● Impedance: 75Ω
● Output frequency: 48MHz～860MHz
● Return loss: ≥15dB
● Output electric level: 100dBuV～115dBuV (adjustable)
● MER ≥38dB
● SNR: ≥50dB
B. RF test output:
● Connector: BNC
● Impedance : 75Ω
● Output electric level: 80dBuV～95dBuV(adjustable)
4. Signal channel coding
● Modulation: QPSK，16QAM，64QAM
● Channel coding: DVB-T standard
● FEC coding: 1/2,2/3,3/4,5/6,7/8
● RS coding: 204byte
● IFFT：2K/8K
● Protection time interval: 1/4,1/8,1/16,1/32
● MER: ≥38dB
● SNR:≥50dB
5. E3 and DS3 interface (optional)
A. Input: (G.703 standard)
● Socket:BNC
● Impedance: 75Ω
● Packet format: 188 or 204 bytes
● Data rate: E3/DS3（34.368Mbps/44.736Mbps）
B. Output (loop output)
● BNC Socket:BNC
● Impedance: 75Ω
6. Network management interface:
● Ethernet interface: IEEE802.3 Ethernate .RJ45 interface
● software agreement: SNMP
7. Power supply
● Voltage: 165V～265VA or 85V～265VAC
● Frequency: 50Hz±2%
● Power consumption: 40W