Coaxial Cable - cia siab rau nyob rau ntawm ib tus nqi pheej yig

Rau cov niaj hnub ntaub ntawv zej zog no tseem ceeb heev npas nyob rau hauv lub lag luam yog ib tug ntau yam ntawm cov khoom, xyuas kom meej lub creation ntawm high-zoo thiab txhim khu kev qha ntaub ntawv sib txuas lus xov xwm. Ib tug ntawm lawv yog ib tug coaxial cable. Nws ua hauj lwm zoo thaum uas siv rau ib tug ntau yam ntawm lub hom phiaj.

Coaxial cov cable yog dav siv nyob rau hauv ntau lub teb ntawm tib neeg kev ua si. Nyob rau hauv kev, nws yog siv mus rau kis satellite Pib ntsais koj teeb thiab video koob yees duab. Qhov no yog vim lub fact tias nws yog hom phiaj haum rau kis high-zaus pulses. Nws tsim tshwj xeeb tso cai rau kom tau lub siab tshaj plaws zoo tus me nyuam ntawm tej Pib ntsais koj teeb tsis muaj tsis tau. Nyob rau hauv cov ntaub ntawv no, cov khiav ntawm cov ntaub ntawv yuav kis tau tshaj ntev ncua kev nrog me me los yog tsis muaj attenuation.

Nyob rau hauv dav dav, lub coaxial cable muaj cov nram qab qauv: uas yog nyob rau hauv nruab nrab ntawm tus neeg xyuas pib (tsim, feem ntau yog ntawm tooj liab) yog muab tso rau hauv kub ceev polyethylene winding muaj dielectric zog thiab topped woven mesh ntawm nyias hlau nyob ntawm tej. Los ntawm saum toj no nws yog them los ntawm ib tug insulating qhwv ntawm polyethylene los yog polyvinyl tshuaj dawb.

Coaxial cable, zoo li lwm yam kev kis tau tus mob nruab nrab, muaj ib tug xov tooj ntawm tej yam ntxwv. Yog li ntawd nws yog tsim nyog los ntawm cov nyuam kom meej meej paub dab tsi lub hom phiaj, nyob rau hauv dab tsi puag ncig nws yuav tsum siv, thiab xwb ces xaiv lub hom ntawm cov feem ntau tsim yam ntxwv.

Piv txwv li, ib tug coaxial cable rau video keb soj ntsuam yuav tsum muaj cov nram qab zog:

1. Nws yuav xa ntau li ntau tau ntawm lub zaus spectrum.
2. Yam tsawg kawg nkaus cawv rau tus tom ntej pass Circuit Court los ntawm kev uas hluav taws xob kis.
3. Qhov siab tshaj plaws tau kuj mus rau sab nraud raug pa.
4. Kev pab tiv thaiv tiv thaiv cuam tshuam.

Tsis tas li ntawd ib qho tseem ceeb yog cov kuj mus tsawg zaus suab nrov, raws li qhov no yog qhov tseem ceeb drawback ntawm xws li ib tug khoom - nws yog susceptible rau Pib ntsais koj teeb kis tau thaum uas tsis muaj frequencies.

Coaxial cable yog feem ntau siv rau cov ntaub ntawv hloov lwm lub tsev ntawm lub txais thiab kis kiag li lawm. Nws yog ib qho ntawm feem ntau txoj kev mus rau kis lub TV Pib ntsais koj teeb thiab video. Nws loj heev yog tsis yog tsawg kawg vim tus kwv tij cheapness.

Muaj yog ib tug ncaj loj tus naj npawb ntawm ntau hom ntawm coaxial cables. Lub ntsiab sib txawv nta nyob rau hauv lub cev yam ntxwv. Nyob rau tib lub sij hawm nws yog tsim nyog sau cia hais tias lub hauv paus ntsiab lus ntawm kev txiav txim nyob qhov sib txawv hom ntawm tus tib yam khoom.

Yog hais tias koj tsis txiav txim siab rau nruab nyob qhov twg (hauv tsev los yog nyob rau hauv lub chaw ua hauj lwm) video keb soj ntsuam system, feem ntau npaum kis tau tus mob nruab nrab yuav tsum raws nraim coaxial cable. Koj yuav tau txais ib tug txhim khu kev qha ua hauj lwm system nyob rau hauv ib tug kuj me me ntawm cov nyiaj. Thiab cov loj heev thiab tus xov tooj ntawm offerings rau lub lag luam tso cai rau koj mus xaiv ib yam khoom uas yuav haum raws nraim mus rau koj lub neeg uas yuav tsum tau. Qhov no yuav pab tau koj kom muaj kev system ntawm tej complexity thiab branching.