DH-803 CATV digital head-end QAM Modulator

DH-803 CATV digital head-end QAM Modulator 1.Complying DVB standard signal channel coding 2.PCR adjusting, output symbol rate DH-803 CATV digital head-end QAM Modulator   Description DH-803 QAM Modulator, is the main equipment CATV digital head-end, receiving DVB transport streams which come from coder, multiplexer, DVB gateway, scrambler, video server etc. It does signal processing like RS coding, convolution interleaving and QAM modulating, providing IF/RF output.  FeaturesComplying DVB standard signal channel coding.Support full range variable data rate, bandwidth and QAM mode Data stuffing super buffer (optional),anti-burst code streamPID filter, re-reflection, PSI,SI information synchronal updating possible.Automatically code stream stuffing and empty pocket deleting.Code stream real-time monitoring, empty pocket filteringSupport NIT table modifyingreal-time code stream monitoringPCR adjusting, output symbol rate variable:1-7Ms/sFixed or agile channel outputProviding ASI and Ds3 input port and output port (optional)Providing RF output monitoring port(-20dB)Local or Remote administration possible.LCD display, flexible in operating High reliability design, stable in running Specifications

Modulating mode		16,32,64,128,256 QAM
Symbol rate		3-7Mbaud/s
Correction coding		RS Coding188/204
Input data rate		1.5-51Mbps
Channel data rate		20-56Mbps
MBR		>33dB
BER		0
Input interface	ASI	DVB standard
	SPI
Output	IF Frequency	36/36.15/36.65/44/70MHz(Optional)
	RF Frequency	47-870Mhz
	Output Level	≥115dBμV
	Output Level adjustable	0-16dB(0.5dB stepping)
	Impedance	75Ω
	Output return loss	≥12dB
Miscellaneous	Dimension	44mmx482mmx410mm
	Temperature	0-45°C(Operating) -20-80°C(Storage)
	Power	220VAC±10%,50Hz,25W

 

DH-803 CATV digital head-end QAM Modulator