Outline
XLD8323 is a professional DVB-T digital transmitter researched and developed by Xielide, 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.
XLD8323 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
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Basic Parameters |
Frequency Range |
470MHz～566MHz, 606MHz～806MHz |
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Output characteristic impedance |
50Ω |
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output power stability |
±0.5dB |
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Inner adjacent channel transmission power |
Inner adjacent channel transmission power : in-band transmission power≤-45dB, meet that Inner adjacent channel transmission power ≤13mW |
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External adjacent channel transmission power |
External adjacent channel transmission power : in-band transmission power≤-60dB, meet that Inner adjacent channel transmission power ≤13mW |
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RF input level |
-20 dBm±3dB |
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Input reflection loss |
≥15dB |
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RF Connector Type |
‘N’ |
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RF output power |
2000W,(1500W/2500W/3000W5000W optional) |
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Step length for SFN frequency adjustment |
1Hz |
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Frequency stability (3 months) |
Inner reference source: stability≤1X10-7 |
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External reference source: stability≤1X10-10 |
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Frequency accuracy |
MFN: accuracy:±100Hz |
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SFN: accuracy:±1Hz |
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Local oscillator phase noise |
Center frequency offset (Hz) |
Local oscillator phase noise (dBc/Hz) |
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10 |
＜-60 |
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100 |
＜-75 |
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1k |
＜-85 |
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10k |
＜-95 |
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100k |
＜-110 |
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1M |
＜-115 |
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Spectrum Mask |
Compliant with regulations about external spectrum mask in GB 20600 |
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Frequency response |
±0.5dB |
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Output impedance |
50Ω |
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Shoulder level |
≥40dB@central frequency IF±4.2MHz (after correction) |
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MER |
≥33dB |
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output reflection loss |
≥20dB |
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Output connector |
1-5/8 EIA |
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Environment condition |
Working temperature |
-20~+50℃ |
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Storage temperature |
-30~+75℃ |
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Relatively humidity |
＜95%（no condensation at 25℃） |
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Cooling mode |
Built-in cooling fan |
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atm press |
86~106kPa |
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power supply |
AC, 380V±10%/50Hz |
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Machine room requirement |
less dust, no shake |
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Dimension |
1140 X 850 X 1845 mm |
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System Principle
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Items |
Quantity |
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Power Supply |
8 PCS |
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Modulator |
1 PC |
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Pre-Exciter |
1 PC |
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Power Distributor |
1 PC |
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Power Amplifier |
8 PCS |
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Power Combiner |
1 PC |
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Filter |
1 PC |
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Feeder |
X Meters (as ordered) |
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Antenna |
1 PC (as ordered) |
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Monitoring Unit |
1 PC |
