Nds3340b 4 in 1 qam

Nds3340b 4 in 1 qam is a cost effective integrated qam modulator newly designed by dexin Company. This device is integrated up to 4 channel qam modulating carrier outputs, in which each carrier has independent signal channel encoding and direct rf output. Therefore, the device is featured with excellent rf performance index. It supports 4 channel asi inputs. Alternatively, this device can take various rf inputs of dvb-s/dvb-c/dvb-t signals by installing the relevant build-in tuners. Hence, one pcs 4 in 1 qam modulator can work as 4 standalone qam modulators, significantly reducing the network operators' head-end cost. Nds3340b can also support local and remote control to set its working parameters.


Feature


l Fully comply with en300 429/itu-t j.83a/itu-t j.83b/itu-t j.83c;

l 4 adjacent channel qam carrier wave

l 4 channels asi input and support 188/204 byte ts packet

l dvb-s/- s2/- c/ -t rf input (optional)

l Support accurate pcr adjusting

l Support 5 qam constellation(itu-t j.83a) modes: 16/32/64/128/256 qam

l 64 qam/256qam constellations(itu-t j.83b/itu-t j.83c)

l Symbol rate adjustment range: 5.0Mbps~9.0Mbps

l Support psi/si editing function

l rf output range: 48MHz~960MHz in 1.0 kHz step

l rf att range: -19dBbm~0dBm in 0.5dB step

l Support lcd display and keyboard

l Support nms operation

l Excellent rf output performance index, mer≥40db