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Home > Products > Transmitter & Receiver

 

DUT-8323 DVB-T Digital Transmitter

R: V20150828-21-25 Data sheet  

 

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

2000W,(1500W/2500W/3000W5000W 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℃

Storage temperature

-30~+75℃

Relatively humidity

<95%(no condensation at 25℃)

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

 

 

 

 

Items

Quantity

Power Supply

8 PCS

Modulator

1 PC

Pre-Exciter

1 PC

Power Distributor

1 PC

Power Amplifier

8 PCS

Power Combiner

1 PC

Filter

1 PC

Feeder

X Meters (as ordered)

Antenna

1 PC (as ordered)

Monitoring Unit

1 PC

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