A seadistamineKaabel-TV vastuvõtusüsteem

Ühendused RG6 hüppajakaabel F-tüüp sobib ideaalselt kõrglahutusega digitaalse satelliittelevisiooni jaoks.

 TheSatellite TV vastuvõtusüsteem koosneb üleslingi edastavast jaamast (üleslingi edastamine), satelliidi tähe korpusest (satelliidi kaudu edastatav transponder) ja maapealse vastuvõtuga (allalüli vastuvõtjaam).

1) Theuplink transmitting station can be a fixed large-scale ground station or a mobile ground station. Theprogram signal and audio signal are sent by a directional antenna, which is processed and amplified and sent to the satellite transponder. In addition to other uplink stations, the main uplink station has two tasks. One is to provide programs to the stars, and the other is to receive downlink signals from the stars to monitor the quality of the programs and the satellite operating attitude, and randomly send correction instructions to the stars through the uplink station to change the satellites. Adjust the antenna and switching equipment to ensure the normal operation of the system.

2) Thesatellite-borne transponder converts the received uplink signal into a downlink FM signal, which is amplified and transmitted to the ground by a directional antenna.

3) Theground receiving station will receive the downlink FM signal forwarded by the satellite, and then undergo frequency conversion and demodulation, and then send it to the cable television (CATV) system. Theabove composition is the basic front-end of the satellite TV receiving system and the cable TV receiving system. composition.

(2) TheCtelevisioonisüsteem (CATV) koosneb vastuvõtvast osast, esiosast, magistraalülekandest ja jaotusvõrgust.

1) vastuvõttev osa:See võtab peamiselt satelliidist mikrolainesignaale suure võimendusega paraboolsete satelliitide vastuvõtuantennide kaudu.

2) Esiosa:koosneb muundurist (kõrgsageduslik pea LNB) ja satelliittelevisiooni vastuvõtjast.

Thefrequency down converter is to reduce the satellite microwave radio frequency signal (C band, the frequency is 3.7~4.2GHz) received by the antenna to the intermediate frequency signal, the frequency is 970~1470MHz. Theequipment is mainly composed of a low noise amplifier and a down converter. .

Thefunction of the satellite TV receiver is to restore the satellite TV signal into images and sound with standard TV interface level eestgeneral TV viewing.

3) Pagasiruumi ülekanne: Thefunction of the trunk transmission part of the CATV system is to transmit the high-frequency TV signal output by the front-end part to the input port of the system distribution network without distortion, and the output level signal should meet the requirements of the distribution network system. Commonly used trunk lines include coaxial cable transmission and optical fiber cable transmission.

4) Jaotusvõrk: Selle ülesanne on edastada esiotsa poolt pakutav kõrgsageduslik telesignaal jaoturisse pealiini kaudu ja seejärel terminalide turustajale kasutajate telerivaatamiseks.

 

Connexions Technology pakub usaldusväärset kvaliteetiRG6 hüppajakaabel F-tüüp Koaksiaalkaabel eestCATV, CCTV.