1.1 Outline

DUT-8322 is a professional DVB-T2 digital transmitter newly developed by DEXIN, which gives medium (600W) and sustained power output. Its compact structure design has greatly saved space for your room. It supports SFN and MFN network mode, output with both signal carrier mode and multi carrier mode, and supports signal channel and broadband transmission.

The frequency range of DUT-8322 is from 470MHz~566MHz, 6060MHz~806MHz. This transmitter has a very high linear and high reliability as it takes high gain and high linear LDMOS tube amplifier module. Furthermore, it supports AGC function to keep sustained power output.

DUT-8322 DVB-T digital transmitter can be widely used in HD/SD digital TV signal transmitting and broadcasting system.

1.2 Key Features

Enhanced signal transmission quality
Intelligent and modularized amplifier unit, takes high power gain and high linear LDMOS tube amplifier module design
Low power consumption and super linear design to improve the transmission power, and reduce the nonlinear distortion
Support AGC function with sustained power output to allow the transmitter a good stability and reliability
Support MFN and SFN system
Have the fault diagnosis function
Full digital front panel control, easy operation.
LED on the front panel support alarm and signal monitor
Stabilized-power supply with wide range of voltage and high efficiency
Parallel connected power supply for final-amplifiers, support hot standby
Cooling system with low consumption and low noise
Multi lightning protection measures, good protection for whole equipment.
24-hour working unmanned, user friendly design
Easy to install, elegant appearance

1.3 Technical Specifications

Basic Parameters	System standard	DVB-T/DVB-C/MPEG-2
	Modulation Mode	QAM4/16/32/64
	Frequency Range	470MHz~806MHz
	output rating	200W/300W/400W/500W/600W optional
	Output characteristic impedance	50Ω
	variation of output power	±0.25dB
	In-band stray	≤-60dBc
	Out-of-band suppression	≥65dBc
Input	frequency	470MHz~806MHz
	Input Level	-20 dBm±3dB
	Input reflection loss	≥15dB
	Input Interface	‘N’
Output	RF output power	200W/300W/400W/500W/600W optional
	Output frequency	470MHz~806MHz
	Output impedance	50Ω
	frequency response	±0.75dB
	Shoulder level	≥36dB@central freqnencyIF±4.2MHz
	output reflection loss	≥20dB
	Output interface	1-5/8 EIA
Environment condition	Working temperature	-20~+50°C
	Storage temperature	-30~+75°C
	Relatively humidity	<95%(25°C no condensation
	Cooling mode	inside cooling fan
	atm press	86~106kPa
	power supply	AC,220V±10%/50Hz
	Machine room requirement	less dust,no shake
	Working temperature	-20~+50°C

Optical signal parameter

parameters	unit	Technical index
Optical wavelength	nm	1100-1600
norminal optical input power	dBm	-1
Input optical power range	dBm	-7~+3
Max input optical power	dBm	+3
Optical interface		FC/APC
optical reflection loss	dB	³45
output reflection loss	dB	³12
inband flatness	dB	£±0.5