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DUT-8351 DVB-T Digital Transmitter (Indoor)
Outline
DUT-8351 is a professional DVB-T/ATSC/ISDB-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-8351 is from 470MHz～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-8351 DVB-(T)/ATSC 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
* LED on the front panel support alarm and signal monitor
* Stabilized-power supply with wide range of voltage and high efficiency
* Multi lightning protection measures, good protection for whole equipment.
* 24-hour working unmanned, user friendly design
* Support fault self-diagnosis
* Support MFN and SFN system
* Easy to install, elegant appearance
Monitoring Objects and Alarm Status
|
Monitoring Objects |
Alarm Status |
|
Power Supply |
abnormal |
|
Overheating |
alert |
|
Amplifier |
abnormal |
|
Antenna feed system |
abnormal |
Phase noise
|
Center frequency deviation (Hz) |
Local oscillator (dBc/Hz) |
|
@10 |
≤ - 70 |
|
@100 |
≤ - 85 |
|
@1k |
≤ - 95 |
|
@10 k |
≤ - 100 |
|
@100 k |
≤ - 111 |
|
@1 M |
≤ - 125 |
Electrical Parameters
|
Item |
Technical specs |
|
|
Basic Parameters |
TV Standard |
DVB-T/ATSC/ISDB-T |
|
Modulating mode |
4/16/32/64 QAM |
|
|
Frequency stability (3 months) |
External Frequency Range: ≤10-10 |
|
|
Internal Frequency Range: ≤10-7 |
||
|
Frequency accuracy |
MFN: ±100Hz / SFN: ±1Hz |
|
|
Local oscillator phase noise |
See table above |
|
|
In-band stray |
≤-60dBc |
|
|
In-band ripple （fc±3.591MHz） |
±0.5dB |
|
|
Out-of-band rejection |
≤-65dBc |
|
|
Input |
Frequency range |
470MHz～806MHz (any 100MHz bandwidth) |
|
level |
-20±3dBm |
|
|
Input reflection loss |
≥15dB |
|
|
connector |
N-K |
|
|
Output |
Output power |
10W, 20W, 30W, 50W, 100W Optional |
|
Frequency range |
470MHz～806MHz (any 100MHz bandwidth) |
|
|
Output impedance |
50Ω |
|
|
In-band ripple (fc±3.591MHz) |
±0.5dB |
|
|
Shoulder level |
≥40dB@central frequency FC±4.2MHz (after correction, single channel) |
|
|
MER |
≥35dB (after correction, single channel) |
|
|
output reflection loss |
≥26dB |
|
|
Output power variation |
±0.25dB |
|
|
Inner adjacent channel transmission power |
Inner adjacent channel transmission power : in-band transmission power≤-60dB, meet that Inner adjacent channel transmission power≤13mW |
|
|
External adjacent channel transmission power |
External adjacent channel transmission power : in-band transmission power≤-65dB, meet that Inner adjacent channel transmission power≤13mW |
|
|
Environment condition |
Working temperature |
-20~+50℃ |
|
Storage temperature |
-30~+75℃ |
|
|
Relatively humidity |
＜95%（no condensation at 25℃） |
|
|
atm press |
86~106kPa |
|
|
power supply |
AC, 220V±10%/50Hz |
|
|
Case size (L/W/H) |
482x504x132mm |
|
Optical Signal Parameters
|
Item |
Unit |
Technical Specs |
|
Optical wavelength |
nm |
1100-1600 |
|
nominal optical input power |
dBm |
-1 |
|
Input optical power range |
dBm |
-15~+2 |
|
Max input optical power |
dBm |
+3 |
|
Optical interface |
|
FC/APC |
|
optical reflection loss |
dB |
45 |
