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Help CenterAgile CATV DTV Headend, Digital Qam Modulator
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Specifications
CATV DTV digital qam modulator, ip qam1.DVB-C Standard
2.16QAM, 32QAM, 64QAM, 128QAM, 256QAM.
3.rf modulator, video modulato
agile CATV DTV modulators, QAM modulator, digital qam modulator
Features
1. Complying DVB standard signal channel coding.
2.Support full range variable data rate, bandwidth and QAM mode Data stuffing
3. super buffer (optional),anti-burst code stream
4. PID filter, re-reflection, PSI,SI information synchronal updating possible.
5. Automatically code stream stuffing and empty pocket deleting.
6. Code stream real-time monitoring, empty pocket filtering
7. Support NIT table modifying
8. real-time code stream monitoring
9. PCR adjusting, output symbol rate variable:1-7Ms/s
10. Fixed or agile channel output
11. Providing ASI and Ds3 input port ad output port (optional)
12. Providing RF output monitoring port(-20dB)
13. Local or Remote administration possible.
14. LCD display, flexible in operating
15. High reliability design, stable in running
Specifications
Specifications
Data interface | |
ASI interface (Asynchronous Serial interface) | |
Input | |
|
Connector Impedance Packet format Access data rate Max valid bit rate DVB standard |
BNC 75Ω 188/204 bits 270Mbps 51.6Mbps |
Loop output | |
|
Connector Impedance |
BNC 75Ω |
SPI input interface(Synchronous Parallel interface) | |
|
Connector Packet format DVB Standard |
DB-25 female 188 or 204 bits LVDS |
IF interface | |
IF input | |
|
Connector Impedance IF frequency |
BNC 50Ω 35.25/36/36.15/44 MHz (optional) |
|
IF Bandwidth≤8MHz Reflect loss ≥18dB | |
Input level |
100dBuV (rms) |
IF loop output | |
Connector |
BNC |
|
Impedance IF frequency IF Bandwidth≤8MHz Reflect loss ≥18dB Output level |
50Ω 35.25/36/36.15/44 MHz (optional)
100±2dBuV(rms) |
RF interface | |
RF output | |
|
Connector Impedance Output Frequency |
BNC 75Ω 48~800MHz |
|
Reflect loss ≥15dB Output level 105~115dBuV (adjustable) | |
|
Carrier rejection SNR(out of band) |
> 55dB ≥50dB |
RF output for test | |
|
Connector Impedance Output level |
BNC 75Ω 85dBuV~105dBuV (adjustable) |
Channel signal encoding | |
|
Constellation Channel encoding MER SNR(out of band) |
16QAM, 32QAM, 64QAM, 128QAM, 256QAM. RS encode, DVB standard ≥42dB ≥50dB |
Network management interface | |
IEEE802.3 ETHERNET, RJ45 interface | |
Software protocol |
SNMP protocol |
Power supply | |
|
Voltage Frequency Power consumption |
165V~265VAC or 85V~265VAC 50Hz±2% 50W |
Operation environment | |
Operation temperature+5~45°C; | |
|
Storage temperature Relative humidity |
-25~+55°C. 10~75% |
Radiation and safety | |
Up to GB13837-92 and GB8898-88 | |
E3 /DS3 Interface (optional) | |
Input (G.703 standard) | |
|
Connector Impedance |
BNC 75Ω |
Packet format 188/204 bits | |
Bit rate |
E3/DS3 No-frame format (34.368Mbps/44.736Mbps) |
Output (loop) | |
|
Connector Impedance |
BNC 75Ω |
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