La description
System advantage
1. QPSK modulation is suitable for single transmitter and broadband
transmitter.Â
2. Standard CA system is with DVB Public Scrambling Algorithm.
Support the same password running.Â
3. CA system could be compatible with and DVB standard and
hardware.Â
4. Descrambling CA module set-top box can be embedded in the
receiver which is user-specified criteria in line with
DVB.Â
5. Adopt digital satellite set-top box, the product is mature and
reliable.Â
6. Very low receiving threshold, it is easy to install for
users.Â
7. Superior error correction capability, error rate is very low,
receive stable and reliable.Â
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).Â
9. The realization of charges intelligent, smart card is authorized
and the user credit card payment initiative.Â
*0. Transmit encrypted digital TV program, image quality is up to
DVD.Â
*1. 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.Â
*2. System upgrade smoothly, it could achieve multi-functional
operations (such as IP, VOD, etc. ).Â
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:Â
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 *0MHz to a net bit rate
transmission: *0/1.*5***8/**4*7/8*2=*2Mbps
Which: Roll-off factor: 0.*5, RS coding rate: **8/**4, 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 *0MHz transmit 7 ~ *3
sets of programs.Â
The system has a total of five frequency points. It can transmit a
total of *5 sets of digital television programs. Each channel
transmits EMM and ECM information, and all programs are scrambled.
| Pays: |
China |
| N ° de modèle: |
MK-2527
|
| Prix FOB: |
(Negotiable)
Obtenir le dernier prix
|
| Localité: |
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| Prix de commande minimale: |
- |
| Commande minimale: |
1 Set |
| Packaging Detail: |
- |
| Heure de livraison: |
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| Capacité de Fournir: |
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| Payment Type: |
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| Groupe de produits : |
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