Product Details

DTMB-T Modulator/4IN1 DTMB Modulator (4 ASI IN,4 DTMB out)
keyborad+LCD,NMS

4IN1 ASI DTMB Modulator

Overview

4IN1 ASI DTMB Modulator has 4×ASI input and 4×DTMB modulating carrier output. Each carrier has independent signal channel encoding and direct RF output. One set of 4in1 DTMB modulator can work as 4 stand alone DTMB modulators, which significantly reduces the network operators’ head-end cost. It suits 1U rack and can be configured by front panel LCD and NMS (network management software).

Technical Specifications

Input		4×ASI, BNC interface
Output	Interface	DTMB RF, F-head
	Impedance	75Ω
	Frequency	30~900MHz
	Modulation Mode	DTMB (carrier number: 1/3780)
	Constellation	4 QAM-NR, LDPC 0.8
		4 QAM, LDPC (0.4, 0.6, 0.8)
		16 QAM, LDPC (0.4, 0.6, 0.8)
		32 QAM, LDPC 0.8
		64 QAM, LDPC (0.4, 0.6, 0.8)
	Carrier Mode	single-carrier, multi-carrier
	Interleaving	240, 720
	Error-Correcting Code	BCH/LDPC
	Date Rate	1.5~32Mbps
	Frame Mode	420 fixed, 595 fixed, 945 fixed, 420 variational, 945 variational
	Single Frequency	MFN/SFN
	MER	≥40dB
	BER	0
	Level Attenuation	0~30dB (0.5dB step)
Control	IP remote	NMS (Ethernet Port, RJ-45), 10/100m base-TX,
Control	Front panel	Keyboard + LCD
General Features	Size	410mm×280mm×44mm
	Temperature	0~45°C (Operation); -20~80°C (Storage)
	Power	100-240VAC, 50Hz, 25W