Specifications

DVB-T digital transmitter
5W-5000W power optional
super linear design
Support MFN and SFN
Support AGC/MGC

DUT-8323 DVB-T Digital Transmitter

Outline

DUT-8323 is a professional DVB-T digital transmitter researched and developed by DEXIN, which gives sustained power output. Its compact structure design has greatly saved space for your room. It is applicable to both SFN and MFN network modes and supports both signal-carrier mode and multi carrier-mode. Signal channel and broadband transmission are supported.

The frequency range of DUT-8323 is from 470MHz~566MHz, 606MHz~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-8323 DVB-T digital transmitter can be widely used in HD/SD digital TV signal transmitting and broadcasting system.

 

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
• Support fault self-diagnosis
• 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

  Technical Specifications

   

  Basic Parameters	Frequency Range	470MHz~566MHz, 606MHz~806MHz
  	Output characteristic impedance	50Ω
  	output power stability	±0.5dB
  	Inner adjacent channel transmission power	Inner adjacent channel transmission power : in-band transmission power≤-45dB, meet that Inner adjacent channel transmission power ≤13mW
  	External adjacent channel transmission power	External adjacent channel transmission power : in-band transmission power≤-60dB, meet that Inner adjacent channel transmission power ≤13mW
  	RF input level	-20 dBm±3dB
  	Input reflection loss	≥15dB
  	RF Connector Type	‘N’
  	RF output power	1500W, 2000W, 2500W, 3000W optional
  	Step length for SFN frequency adjustment	1Hz
  	Frequency stability (3 months)	Inner reference source: stability≤1X10-7
  		External reference source: stability≤1X10-10
  	Frequency accuracy	MFN: accuracy:±100Hz
  		SFN: accuracy:±1Hz
  	Local oscillator phase noise	Center frequency offset (Hz)	Local oscillator phase noise (dBc/Hz)
  		10	<-60
  		100	<-75
  		1k	<-85
  		10k	<-95
  		100k	<-110
  		1M	<-115
  	Spectrum Mask	Compliant with regulations about external spectrum mask in GB 20600
  	Frequency response	±0.5dB
  	Output impedance	50Ω
  	Shoulder level	≥40dB@central frequency IF±4.2MHz (after correction)
  	MER	≥33dB
  	output reflection loss	≥20dB
  	Output connector	1-5/8 EIA
  Environment condition	Working temperature	-20~+50°C
  	Storage temperature	-30~+75°C
  	Relatively humidity	<95%(no condensation at 25°C)
  	Cooling mode	Built-in cooling fan
  	atm press	86~106kPa
  	power supply	AC, 380V±10%/50Hz
  	Machine room requirement	less dust, no shake
  	Dimension	1140 X 850 X 1845 mm

    

System Principle

 

 

 

 

  

 

 

 

 

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