Origin |
China |
Brand Name |
Ditel |
Function Description:
DL-QAM501 frequency-agile QAM modulator meets the DVB-C standards. TV signals process with other data flows through MPEG-Ⅱ Compression Coding ,then sent into QAM modulator .QAM codding is carried out in accordance with technical specifications of the DVB,such as Such as interlacing, RS error-correcting coding,which is suitable for digital TV, date broadcasting video-on-demand, Internet, video conferencing and other applications .
Main Features
1.Suitable for QPSK、16QAM、32QAM、64QAM、128 QAM、256QAM
2.Input interface: ASI/SPI
3.Effective data input range of bites: 2Mbaud/s~56MBaud/s
4.Date Input range of bites:2Mbaud/s~56Mbaud/s
5.The network range of output signal:1.15MHz~8.05MHz
6.Output data range of symbol rate:1 MBaud/s~7MBaud/s
7.:Chinese LCD display
8.it has the Remote management and control interface (options)
9. Power-down memory function
Technical specifications
1. Data interface : ASI interface
2. Input
3. Socket : BNC
4. Impedance 75Ω
5. Packet formats :188 or 204 bytes
6. Channel data rate: 270Mbps
7. Standard: In line with the DVB standard
RF output
1. Connector: F Head (Metric)
2. Impedance 75Ω
3. Center Frequency: arbitrary set (Frequency Agile)
4. Output network: 47MHz~863MHz
5. Out band rejection ≥ 60dB
6. return loss:≥ 14dB
7. Max. Output Power level :110dBuV
8. Level adjustment range : ≥15dB
9. Frequency Accuracy ≤±10KHz
10. .Frequency stability ≤±20KHz
11. Modulation methods :QPSK,16QAM,32QAM,64QAM,128Q AM,256QAM
12. Channel codding : In the line with RS codding of DVB standards
13. MER:≤2.5%(RMS)
14. SNR:≥50dB
System control and fault alarm
1.Signal input interface options (ASI/SPI)
2.Unlocked code stream alarm
3.Data overflow alarm
Power supply
1.Voltage: 187V~253V AC
2.Frequency : 50×(12%) Hz
3.Power Consumption : 35W
Working environment
1.Ambient temperature +5℃~45℃
2. Storage temperature -20C~+80C
Radiation and safety requirements
In he line with the GB13837-92 and GB8898-88
Dimensions 1U
|