Ukuseta aInkqubo yokufumana iTV

Izihlanganisi RG6 Jumper Cable F-Uhlobo ilungele inkcazo ephezulu yeTV yedijithali yesathelayithi.

 Inkqubo ye-SInkqubo yokufumana i-TV yesathelayithi iqulunqwe sisikhululo sokusasaza se-uplink (ukuhanjiswa kwe-uplink), umzimba we-satellite stellar body (umthuthi ohamba ngesathelayithi) kunye nokufumana umhlaba (isikhululo sokufumana ezantsi).

1) Inkqubo ye-uplink transmitting station can be a fixed large-scale ground station or a mobile ground station. Inkqubo ye-program 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) Inkqubo ye-satellite-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) Inkqubo ye-ground 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. Inkqubo ye-above composition is the basic front-end of the satellite TV receiving system and the cable TV receiving system. composition.

(2) Inkqubo ye-CInkqubo kamabonakude ekwaziyo (i-CATV) yenziwa yinxalenye yokufumana, indawo engaphambili, ukuhanjiswa komboko kunye nenethiwekhi yokuhambisa.

1) Inxalenye yokufumana:Ngokuyintloko ifumana isatifikethi se-microwave sign ngokusebenzisa i-satellite ephezulu yokufumana i-eriyali.

2) Inxalenye yesiphelo:Inesiguquli esiphantsi (intloko ene-LNB ephezulu) kunye nesamkeli seTV sethelevishini.

Inkqubo ye-frequency 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. Inkqubo ye-equipment is mainly composed of a low noise amplifier and a down converter. .

Inkqubo ye-function of the satellite TV receiver is to restore the satellite TV signal into images and sound with standard TV interface level yegeneral TV viewing.

3) Ukuhambisa isiqu: Inkqubo ye-function 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) Inethiwekhi yokuhambisaUmsebenzi wayo kukuhambisa isignali yeTV ephezulu enikezelwa sisiphelo esingaphambili kwisiqwenga somgca ophambili, emva koko siye kumhambisi wesiphelo sabasebenzisi bokubukela iTV.

 

I-Connexions Technology ibonelela ngomgangatho othembekileyoRG6 Jumper Cable F-Uhlobo Ikhebula leCoaxial yeICATV, iCCTV.