QAM Modulator DMB-5000

DMB-5000 QAM Modulator is the key equipment of Digital Cable Television network. It receives MPEG TS via DVB ASI interface, realizes DVB-C channel encoding and QAM modulation, then output intermediate frequency signal, finally upconvert intermediate frequency signal into RF signal. With digital IF modulation, the modulator has the high performance of MER, carrier-to-noise ratio, phase noise, margin of error, etc. It also supports PID filtrating & mapping and PSI/SI updating. For the best performance and high stability, it is the best choice of the DTV operators.
Main features
The signal coding comply to ITU-T J.83
PID filtrate and remapping can be configured
PSI/SI information updating possible
Filling MPEG TS automatically and delete empty packet intellectively
PCR emendation supported
188/204 data packet adaption automatically
RF output frequency scope 48~862MHz, in 0.1MHz step
Output level can be adjusted correctly in 108~118dBuV
Web browser remote control, network upgrade supported
Specification
MPEG TS Input
2 DVB-ASI input
Comply to EN50083-9 ASI connecter
Effective bit rate 1Mbps~51.6Mbps
ASI mode BYTE or BURST
MPEG frame 188/204 data packet
Connector 75ohm, BNC
MPEG TS output
1 DVB-ASI loop through
Comply to EN50083-9 ASI connecter
Effective bit rate 1Mbps~51.6Mbps
ASI mode BYTE or BURST
MPEG frame 188/204 data packet
Connector 75ohm, BNC
RF Output
Output frequency 50MHz~860MHz
Output level 105dBuV~ 121 dBuV (adjustable)
Output return loss ¡Ý10dB
I/Q amplitude unbalanced 0.1%
I/Q quadrature error 0.1o
Phase jitter 0.5o RMS
Outband restrain 55dB
MER 33dB
C/N 45dB
Connector 75ohm, F type
QAM parameter
Mode 16, 32, 64, 128, 256 QAM
Symbol rate 3.5~7 Mbaud/s
Width ¡Ü8MHz
Control
Front Panel LCD display & cursor/execute keys
Web Server Embedded
Power
Voltage AC 90~260V
Frequency 50~60Hz
Consumption Max. 30W
Mechanical Parameter
Operational temperature -10~50oC
Storage temperature -10~70oC
Humidity 10%-95%
Dimension 318mm(W)¡Á483(L)mm¡Á44mm(H)
Weight 4kg
ORDERING INFORMATION
DMB-5000 QAM Modulator
QAM Modulator DMB-50

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Hang Zhou Digicast Technology Co., LTD is located in Hangzhou city, ZheJiang province, China, mainly focuses on digital television field. We are the professional company to develop, manufacture and sell the digital terrestrial TV & Broadcasting equipments and products. Our products include GB20600-2006 Digital Terrestrial Television Network equipments, DVB DTV headend equipments, MPEG TS transport equipment and STB, etc.


The Chinese standard GB20600-2006 digital terrestrial TV...more>>