- Contact Person : Ms. Wang Chong
- Company Name : Chengdu Kaiteng Sifang Digital Radio & TV Equipment Co., Ltd.
- Tel : 86-28-85175031
- Fax : 86-28-85175031
- Address : Sichuan,Chengdu,NO. 321, Wenguang Road, Qingyang Centralized Industrial Development Zone, Qingyang District, Chengdu, Sichuan
- Country/Region : China
500W TV Transmitter
KFS-Ⅱ series digital 500W TV Transmitter, is the fourth generation of terrestrial digital broadcasting TV transmitting equipment.
Main Features:
1. Supports MFN and SFN modes, SFN mode compliant with GY/T 229.1-2008.
2. All-solid-state with modularization structure;
3. Dual exciter systems, the active and reserve exciter can be switched manually or automatically. Keep consistent work state when switching.
4. Adopts advanced adaptive pre-distortion correction technique, big correction value, improved transmitter parameters and efficiency.
5. Adopts advanced LDMOS as power amplify tube, better index, higher efficiency and smaller bulk;
6. Independent designed cross coupling 6-cavity filter, the output spectrum meets China standard.
7. Transmitter has multiple protection measures against losing lock, overheating, standing wave, inter lock and overloading to ensure stable work status.
8. Local/Remote monitoring and On/Off schedule for unattended operation;
9. Embedded microcomputer monitor system, large color LCD touch screen, to ensure real-time monitoring of the transmitter.
10. RS485 interface for remote metering and remote control;
11. Optional air cooling or water-cooling, for different station requirements.
Main Technical Parameters:
Item | 50W/100W/200W | 300W/500W | 1KW | 2KW | 3KW |
Output power | 50W/100W/200W | 300W/500W | 1KW | 2KW | 3KW |
Work Frequency | any channel within UHF TV band | ||||
Modulation standard | DTMB, DVB-T, DVB-T2 (optional) | ||||
Minimum frequency stepping | 1Hz | ||||
Frequency stability (three months) | Internal reference source: ≤5X10-8 External reference source: ≤1X10-10
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Frequency accuracy | MFN mode: ±50Hz SFN mode: ±0.05Hz | ||||
Local oscillator phase noise | <-60dBc/Hz@10Hz; < -75dBc/Hz@100Hz; < -85 dBc/Hz@1kHz; < -95dBc/Hz@10kHz; < -110 dBc/Hz@100kHz; < -115dBc/Hz@1MHz | ||||
Output power stability (after filtering) | ±0.5dB | ||||
Spectrum mask | compliant with out-of-band spectrum mask standard in GB20600-2006 | ||||
Return loss of output load (within 8MHz) | normal work: ≥26dB; allowable work: ≥20dB
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Shoulder (fc±4.2MHz) | ≤-37dBc (before filtering) | ||||
In-band unevenness (fc±3.591MHz) | ±0.5dB
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Modulation Error Rate | ≥32dB | ||||
Useless transmit power in adjacent channel | Ratio of useless transmit power in adjacent channel with in-band transmit power≤-45dB Transmit power in adjacent channel≤13mW
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Useless transmit power out of adjacent channel | Ratio of useless transmit power out of adjacent channel with in-band transmit power≤-60dB Transmit power out of adjacent channel≤13mW | ||||
Environment requirements | Environment temperature: 0°C~45°C Relative humidity: ≤95%(No condensation) Atmospheric pressure: 86~106KPa Work Voltage: three-phase AC 380V±10%, 50±2Hz | ||||
Dimension | 563MM (W) x 337.5MM (H) x 514.5MM (D) | 563MM (W) x 960MM (H) x 750MM (D) | 586MM (W) x 1650MM (H) x 970MM (D) | 775MM (W) x 1650MM (H) x 1100MM (D) | 586MM (W) x 1650MM (H) x 1050MM (D) |
500W TV Transmitter
