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Specifications
low power consumption and super linearityCapable of automatically working for 24 hours
outdoor type
Outline
The DUT-8422 digital TV transmitter (Out-room type) is the newest digital TV transmitter product of our company, which is capable of supporting network organizations of single frequency net and multi-frequency net and supporting single carrier mode and multi-carrier mode. Besides, DUT-8422 also supports the transmitting methods of single channel and broad band; and it provides with band width of 470MHz-566MHz or 606MHz-806MHz. Furthermore, the DUT-8422 is composed of an import power amplifier with high gain and high linearity LDMOS tube, which greatly increases the linearity and reliability of the product. And because of the AGC function of DUT-8422, the stability of output power, the reliability and performance of the product are excellent.
DUT-8422 digital TV transmitter (Out-room type) can be widely used in HDTV/SDTV digital TV signal transmitting or broadcasting system as well as digital broadcasting.
Features
1.Capable of increasing the transmitting quality of digital signal.
2.Provided with intelligent and modular power amplifier and import power amplifier with high gain and high linearity LDMOS tube.
3.Designed with low power consumption and super linearity which greatly increases the transmitting power of the transmitter and reduces the non-linear distortion products.
4.With AGC function for ensuring the stability and reliability of the product.
5.Alarming and signal monitoring function via LED indication.
6.Switching voltage stabilizer with broad stabilizing range and high efficiency.
7.One-to-one allocation of amplifier and switching power supply, high efficiency and low connection loss.
8.With function of multiple lightening protection.
9.Capable of automatically working for 24 hours.
10.Aluminum shell with modular structure.
11.Elegant appearance.
Specifications
| Technical indexes | Working frequency | 470MHz-566MHz/606MHz-806MHz |
| Step width adjustment of frequency | 1Hz | |
| Frequency stability | Refer to external clock: ≤10-10 | |
| Refer to internal clock: ≤10-7 | ||
| Frequency accuracy | MFN: ±100Hz | |
| SFN: ±1Hz | ||
| Local oscillator phase noise | ≤-115dBc@1MHz | |
| ≤-110dBc@100kHz | ||
| ≤-95dBc@10kHz | ||
| ≤-85dBc@1kHz | ||
| ≤-75dBc@100Hz | ||
≤-60dBc@10Hz |
| Technical indexes | RF rated output power | 200W, 300W |
| RF output power stability | ±0.5dB | |
| Reflection loss of output load (within band of 8MHz) | ≥26dB | |
| In band unevenness (fc±3.591MHz) | ±0.5dB | |
| Inter-band ratio | ≤-36dB@ central frequency IF± 4.2MHz | |
| Modulation error ration (MER) | ≥32dB | |
| Transmitting frequency within neighbor channels | power ration≤45dB,Transmitting power ≤13mW | |
| Transmitting frequency out of neighbor channels | power ration ≤60dB, Transmitting power≤13mW |
| Interface | Input interface | Q9 |
| Output interface | L27 50Ω L29 50Ω | |
| Environmental condition | Working temperature | -20°C~+50°C |
| Storage temperature | -30°C~+75°C | |
| Relative humidity | <95% | |
| Atmosphere | 86-106KPa | |
| Power supply | AC 220±10%/50Hz | |
| Requirement for machine room | Little dust, no vibration and shock | |
| Size | depended on the rated power |
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