1.1Outline: NDS3521 Multi Channels IP QAM Modulator fully complied to EN300 429(DVB-C) standard multi-way QAM Modulator. The device via Gigabit IP inputting TS streams or through the optical network does FEC coding, filtering, mixing, radio frequency amplification and other processing, and can achieve up to 36 Road, QAM modulated signal output. The product uses advanced signal processing techniques and the latest software, wireless technology. It will be a high degree of integration of traditional multiple devices, network, greatly increasing the stability and reliability of equipment ,and reducing the system cost of procurement of equipment at the same time. It is the best choice for the ground cable, the next generation of radio and television. 1.2 Features : l 2 Gigabits Ethernet input interface l 12 QAM modulation channels per module, maximum 3 modules or 36 QAM modulation channels l Fully compliant to EN300 429(DVB-C) and ITU-T J.83 A/B/C l Supports symbol rate of 1 7 MBauds l Supports 16QAM,32QAM,64QAM,128QAM,256QAM l Excellent MER performance over 40db l RF output range of 30 850Mhz, 1Khz step l LCD display, keyboard and network management 1.3 Specifications: Standard Fully complied to EN300 429 (DVB-C) /ITU-TJ.83A Modulation mode 16QAM,32QAM,64QAM,128QAM,256QAM symbol rate 1 7MBauds Error-correcting codes RS code Input signal SFP:4×GbE,1×2.5G SDH UTP:4×GbE,RJ45 Control Local PC: RJ45 ethernet interface front panel: buttons ,LCD Network remote control and upgrade Output signal Output frequency:30 850MHz Power frequency output:90dBuV 110 dBuV/QAM channel(0.5 dBuV stepping) Interface Specification: type head SNR:>53dB MER:>40dB Working condition Dimension :44mm×482mm×410mm Temperature :0 45ºC(operating);-20 80 ºC(storage) Power:220AVC±10%,50Hz,75W