Dab tsi yog cov yeeb yaj kiab coaxial cable?
Raws li cov ntaub ntawv, muaj ob hom: SYV thiab SYWV. Cov khoom siv lub cev qauv ntawm lub rwb thaiv tsev txheej yog txawv. SYV yog cov khoom polyethylene cable; SYWV yog lub xov tooj hluav taws xob ntau ntawm cev nqaij daim tawv. Qhov kev xa tawm ntawm lub cev lub cev foamed cable zoo dua li ntawm polyethylene (S - coaxial cable). Y - polyethylene V - polyvinyl chloride W - ruaj khov polyethylene). Raws li impedance, nws tuaj yeem muab faib ua SYV 50-XX SYV 75-XX SYV-100 XX …… XX sawv cev rau sab nraud txoj kab uas muaj ntawm cov kab insulating.
1. Kev sib txuas ua ke video taw qhia: kev cuam tshuam dav dav yog BNC, RCA (qhaus taub hau)
75 sawv cev tiv thaiv, thiab hauv qab no 3 thiab 5 sawv cev nws cov rwb thaiv tsev sab nraud (3mm / 5mm).
Cov kab video:
75-3 kis nrug yog kwv yees li 200 metres;
75-5 kis nrug deb yog li 500 meters;
75-7 kev sib kis ceev yog li 500-800 meters);
Kev sib kis tau ceev ntawm 75-9 yog txog 1000 --- 1500 meters;
Qhov kis tau ceev ntawm 75-12 yog li 2000-3500 meters.
