タイトルまたは説明

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. Features ●Complying DVB standard signal channel coding. ●Support full range variable data rate, bandwidth and QAM mode Data stuffing ●Super buffer (optional)，anti-burst code stream ●PID filter, re-reflection, PSI、SI information synchronal updating possible. ●Automatically code stream stuffing and empty pocket deleting. ●Code stream real-time monitoring, empty pocket filtering ●Support NIT table modifying ●Real-time code stream monitoring ●PCR adjusting, output symbol rate variable:**7Ms/s； ●Fixed or agile channel output; ●Providing ASI and Ds3 port and output port (optional) ●Providing RF output monitoring port（**0dB）； ●Support Local or Remote administration ●LCD display, flexible in operating ●High reliability design, stable in running Specifications Modulating mode 4、*6、*2、*4、**8、**6 QAM Symbol rate 1~7Mbaud/s Correction coding RS Coding**4 PCR Jitter <±**0ns Input data rate 1.5~*1Mbps Channel data rate *0~*6Mbps MER ≥*2dB BER 1´***8 Input interface ASI DVB standard SPI IF output IF Frequency Optional IF RF Frequency **0~**2MHz (Fixed or Agile Channel Optional) Output Level ≥**5dBmV Output Level adjustable ***0 dB(step by 0.5dB) Impedance *5Ω Output return loss ≥*2 Miscellaneous Dimension *4mm´**2mm´**0mm Temperature 0 ~ *5℃(Operating) **0 ~ *0℃(Storage) Power **0V/**0VAC±*0%，*0Hz，*5W