Description
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.
FEATURE
﹡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 Bytes packet
﹡Connector 75ohm, BNC
RF Output
﹡Output frequency 50MHz~860MHz
﹡Output level 105dBuV~ 121 dBuV (adjustable)
﹡Output return loss ≥10dB
﹡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 ≤8MHz
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 -10~50℃
﹡Storage temperature -10~70℃
﹡Humidity 10%-95%
﹡Dimension 318mm(W)×483(L)mm×44mm(H)
﹡Weight 4kg
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