Product Specifications
Product Description
System advantage
1. QPSK modulation is suitable for single transmitter and broadband transmitter.
2. Standard CA system is with DVB Public Scrambling Algorithm. Support the same password running.
3. CA system could be compatible with and DVB standard and hardware.
4. Descrambling CA module set-top box can be embedded in the receiver which is user-specified criteria in line with DVB.
5. Adopt digital satellite set-top box, the product is mature and reliable.
6. Very low receiving threshold, it is easy to install for users.
7. Superior error correction capability, error rate is very low, receive stable and reliable.
8. In accordance with accounting programs, achieve value-added services classification (such as adult programs, film programs are charged different rates, the user may choose program, operators can be given only to certain types of programs to allow the privilege of watching the crowd).
9. The realization of charges intelligent, smart card is authorized and the user credit card payment initiative.
10. Transmit encrypted digital TV program, image quality is up to DVD.
11. Adopt independent scrambler. It could be used matching with any CA system which is with the standard of DVB. It lay the foundation for fully digitized system.
12. System upgrade smoothly, it could achieve multi-functional operations (such as IP, VOD, etc. ).
Design Idea
1. System stability
2. Signal stability
3. Coverage radius
4. Input cost control
5. System extended and upgraded
6. Standardization
General design
According the requirement listed above, microwave digital television platform include these parts listed as following:
1. DVB digital TV transmission system
2. Conditional Receiver System
3. User Management System
4. Digital microwave transmission system
Programs and bandwidth planning
A frequency point and bandwidth of 30MHz to a net bit rate transmission: 30/1.15*188/204*7/8*2=42Mbps
Which: Roll-off factor: 0.15, RS coding rate: 188/204, Coding rate of convolution codes: 7/8, QPSK rate: Symbol rate * 2
The integrated programs of coding programs adopt rate of 3~6M as usual, a frequency point and bandwidth of 30MHz transmit 7 ~ 13 sets of programs.
The system has a total of five frequency points. It can transmit a total of 55 sets of digital television programs. Each channel transmits EMM and ECM information, and all programs are scrambled.
Guilin Mingke Communication Equipment Co. Ltd., located in Guilin High-tech Zone Venture Park, it's predecessor was established in 1989. The products such as Front-end Digital Radio System, microwave devices and the band planes microwave tramsceiver have completely proprietary intellectual property rights.
We can provide complete system engineering solutions for users with world-class professional measuring instruments, from HP, Japan Anritsu, micro-companies etc, and a ladder-shaped configuration optimization of engineering and technical forces haveformed already.
The company is applying for ISO quality system authentication, and it's portabletwo-way transmission machines of moving images have already passed military authentication, also the two-way multimedia digital microwave transmission equipments have been exported to Korea and Southeast Asia in batches.
The company always follow "the quality throughout first, theprestige supremely", and we are willing to create the glorious future with fellow colleagues altogether.
