COFDM av digital modulator
1.Output frequency:48MHz~860MHz
2.support 6MHz/7MHz/8MHz bandwidth
3.Support 2K/8K carrier-wave o
av COFDM av digital modulator
1.Output frequency:48MHz~860MHz
2.support 6MHz/7MHz/8MHz bandwidth
3.Support 2K/8K carrier-wave operation
Features
1:Comply EN300744 standard, support 6MHz/7MHz/8MHz bandwidth
Error correction comply DVB-T standard
Operable in QPSK, 16QAM, 64QAM mode
2: Support 2K/8K carrier-wave operating mode
FEC encode supports1/2, 2/3, 3/4, 5/6 and 7/8
Secure time interval supports1/4, 1/8, 1/16, 1/32
3: Input interface: ASI and SPI (DS3/E3 optional)
Input bit rate: 1.5~31.67Mbps
Output bandwidth: 6/7/8MHz
4: RF output: 48~860MHz
Output level: 105dBuV~115dBuV (step adjustable)
188 and 204 packet automatic identification, shows real-time data format
5: Adopt high capability buffer, ASI interface supports burst and equality TS, while re-construct equality TS
Advance output TS efficiency
Capable of NITmapping and sending, supports over 44 NIT mapping frequency
6: Holds 10 groups of PID filtering and re-mapping function
Support all PSI/SI data abstraction, modification and analysis
Null packet filtering and filling
7: 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)
8: -20dB RF test output is available (IF output is also available)
Failure alarming and LCD display
With RJ45, actualize central NMS, distant upgrade/maintenance (NMS software is optional)
Power off memory
Specification
ASI interface | Input Connector | BNC 75Ω | |
Packet format | 188 or 204 bits (without channel coding) | ||
Access data rate | 270Mbps | ||
Max valid bit rate | 31.67Mbps | ||
DVB standard | Support burst and equality TS | ||
Loop output | Connector | BNC 75Ω | |
SPI input interface | Connector | DB-25female | |
Packet format | 188 or 204 bits (without channel coding) | ||
DVB standard | LVDS | ||
IF interface | Input connector | BNC 50Ω | |
IF frequency | 36MHz/35.25/36.15/44MHz (optional) | ||
IF bandwidth | ≤8MHz | ||
Reflect loss | ≥18dB | ||
Input level | 95dBuV(rms) | ||
IF loop output | Connector | BNC 50Ω | |
IF frequency | 36MHz/35.25/36.15/44MHz (optional) | ||
IF bandwidth | ≤8MHz | ||
Reflect loss | ≥18dB | ||
output level | 95dBuV(rms) | ||
RF output | Output connector | BNC 75Ω | |
Output frequency | 48MHz~860MHz (in segment) | ||
Reflect loss | ≥15dB | ||
Output level | 105dBuV~115dBuV (adjustable) | ||
Carrier rejection | ≥55dB | ||
MER | ≥42dB | ||
SNR (out of band) | ≥50dB | ||
RF output for test | Connector | BNC 75Ω | |
Output level | 85dBuV~95dBuV (adjustable) | ||
Network management | Ethernet | IEEE802.3 ETHERNET, RJ45 interface | |
Software protocol | SNMP protocol | ||
Others | Power | 165V~265VAC or 85V~265VAC 50Hz±2% 40W | |
Temperature | 5~45(operating), -25~55(storage) | ||
Humidity | 10~75% | ||
Dimension | 483mm*400mm*44.5mm | ||
E3/DS3 Interface (optional) | Input (G.703 standard) | Connector | BNC 75Ω |
Packet format | 188/204 bits | ||
Bit rate | E3/DS3 No-frame format (34.368Mbps/44.736Mbps) | ||
Output (loop) | Connector | BNC 75Ω | |
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