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DUT-8322 (600W) DVB-T Digital Transmitter transmittance
1.1 Outline
DUT-8322 is a professional DVB-T 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 600W 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
- Amplifier and switching power supply one-for-one configuration, connect directly to each other, reducing wired loss
- 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 |
600W |
|
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 |
600W |
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 |
1.4 System Principle
Face Side Back Side
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