Product Details

Specifications

digital UHF transmitter
Support MFN and SFN system

DUT-8422 400W MUDS transmitter

Product Overview

DUT-8422 is a professional 400W DVB-T transmitter which gives sustained power output and with Compact structure design to save space. It supports SFN and MFN, support signal carrier mode and multi carrier mode, support signal channel and broadband transmission.

The frequency range of DUT-8422 is from 470MHz~806MHz. This transmitter has a very high linear and high reliability because it takes high power gain and high linear LDMOS tube amplifier module. And its cooling system is forced cooling. Furthermore it support AGC function, and it can keep sustained power output.

DUT-8422 400W DVB-T transmitter can be widely used in HD/SD digital TV single transmit and broadcasting system.

Key features

Improve signal transmitting quality
Intelligent, modularized amplifier unit, takes high power gain and high linear LDMOS tube amplifier module design
Low power consumption super linear design, improve the transmission power of the transmitter, and reduce the nonlinear distortion
Support AGC function, with sustained power output, to approve the transmitter have good stability and reliability
Support MFN and SFN system
Have the fault diagnosis function
Intelligent and full digital front panel control, easy operation.
LED on the front panel support alarm and signal monitor
The switching power supply with wide range of voltage, high efficiency
Power amplifier and switching power supply one-on-one configuration, each connected directly inserted, reduce the attachment loss, improve efficiency
Designed with cooling fan, cooling system with low consumption and low noise
Multi lightning protection design, good protection for whole equipment.
24 hour working unmanned, user friendly design
Easy for install, good looking

Technical specification

Electrical signal parameter

Item		Technical Spec
Basic parameter	standard	DVB-T/ MPEG-2
	modulation	support QAM4/16/32/64 mode
	Working frequency	470MHz~806MHz
	output rating	400W
	Output characteristic impedance	50Ω
	variation of output power	±0.25dB
	With inner stray	≤-60dBc
	Out of band rejection	≥65dBc
Input character	Output frequency range	470MHz~806MHz
	Input level range	-20 dBm±3dB
	Input reflection loss	≥15dB
	Input joint	‘N’
output character	RF output power	400W
	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 friction

Optical signal parameter

parameter	unit	Technical index
Optical wavelength	nm	1100-1600
norminal optical input power	dBm	-1
Input optical power range	dBm	-7~+2
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