DVB-T Transmitter

DVB-T Transmitter: 1. 19 inch standard housing 2. True color touch screen 3. LDMOS 4. GSM or GPRS

KFS-Ⅱ 100W terrestrial digital TV broadcasting transmitter, which is designed and produced with our own intellectual property. It can be used to broadcast terrestrial digital TV programs for the TV stations or network operators. It is compliant with GB20600-2006 (China Framing Structure, Channel Coding and Modulation for Digital Terrestrial Television Broadcasting System), GB/T14433-1993 (Technical Specifications for Coverage Networks of Color TV Broadcasting), and GY/T229.4-2008 (Technical Specifications and Methods of Measurement for Digital Terrestrial Television Broadcasting Transmitters) standards.

The transmitter supports MFN and SFN, and the SFN is compliant with GY/T229.1-2008.

  

Main Features:

1. All-solid-state with modularization structure, good stability and high reliability.

2. Adopts new generation pre-distortion correction digital TV exciter, excellent quality, good performance and complete functions.

3. Adopts advanced LDMOS as power amplify tube, wide bandwidth, good linearity, big redundancy, and strong interchangeability;

4. With RS485, remote detecting and controlling can be realized by communicating with Ethernet;

5. GSM module or GPRS module is optional for realizing remote detecting and controlling by users;

6. Supports local/remote/timing/emergency multiple on-off modes;

7. True color touch screen display/control, easy operation and maintenance and failure diagnosis.

8. Record and save logs (including normal operation logs, abnormal logs and warning logs.

9. Big loop AGC, keep stable output.

10. Having multiple protection measures against over voltage, over current, over heating, over blower failure, inter lock, overloading and over SWR, safe and reliable operation;

11. Safe earthing and multiple lightening protection measures, to ensure people and equipment safety.

12. Optional dual exciters, automatic switching between main and reserve exciters;

13. Adopts axial-flow fan forced air cooling, small power consumption and low noise;

14. Adopts high quality switching power supply, wide voltage-stabilizing rage, and high efficiency.

15. Adopts 19″ standard housing, small size and nice figure.

Main Technical Parameters:

Item	Parameter
Power supply	single phase AC220V±15%; 47Hz-55Hz
Output power	≥100W
Work frequency	any channel within UHF frequency, bandwidth: 8MHz
Minimum frequency adjust stepping:	1Hz
Frequency stability (3 months)	Internal reference source: ≤5×10-8 External reference source: ≤1×10-10
Frequency accuracy	MFN mode: ±50Hz SFN mode: ±0.1Hz
Local oscillator phase noise:	<-95dBc/ Hz @1kHz < -102dBc/ Hz@10kHz < -115dBc/ Hz@100kHz
Spectrum mask	compliant with GB20600-2006
SFN delay adjusting range	0s~4s
SFN delay adjusting stepping	100ns
Output power stability (after filtering)	±0.3dB
Shoulder (fc±4.2MHz)	≤-38dBc
In-band unevenness (fc±3.591MHz)	±0.5dB
MER	≥32 dB
Useless transmit power in adjacent channel	≤-46 dB
Useless transmit power out of adjacent channel	≤-65 dB
Environment temperature	-5°C~+50°C
Relative humidity	< 95%(No condensation)
Atmospheric pressure	86~106KPa

DVB-T Transmitter