Lub coaxial cable system rau analog teeb liab kev sib kis siv cable TV yog lub npe hu ua broaxial coaxial cable. Lo lus "broadband" los ntawm kev lag luam, yog qhov sib piv ntawm 4kHz dav qhab. Hauv lub khoos phis tawj siv, txawm li cas los xij, "broadband cable" yog hais txog ib qho cable network uas siv cov cim analog rau kev sib kis.
Cov kev siv thev naus laus zis siv cov qhabnias ntsuas TV? Vim tias siv cov cim hluav taws xob analog tso rau hauv lub interface, txhawm rau nkag mus rau hauv lub network teeb liab, thiab cov teeb liab tawm ntawm lub network tau hloov mus rau hauv dej me ntsis.
Cov tshuab broadband tau muab faib ua ntau cov channel, thiab TV tshaj plaws hauv TV feem ntau yuav siv sijhawm 6MHz channel. Txhua tus channel siv tau los sim cov TV, CD Zoo, lub suab (1.4MB / s) lossis 3MB / s digital me ntws. TV thiab cov ntaub ntawv tuaj yeem sib xyaw thiab kis tau dhau ib qho cable.
Ib qho ntawm cov ntsiab lus tseem ceeb ntawm cov tshuab broadband thiab cov xov tooj bootband yog tias yuav tsum tau ua kom muaj zog ntawm kev teeb tsa vim muaj kev pab them nqi ntau yam. Cov ntawv qhia txog cov npe no tsuas yog xa tawm cov cim hauv ib qho kev taw qhia, yog li muaj qhov ua kom nrov dua ntawm cov khoos phis tawm, cov pob ntawv tsis tuaj yeem kis rov qab ntawm cov khoos phis tawm. Txhawm rau kom daws tau qhov teeb meem no, ob hom kev nthuav dav dav hlau tau tsim: ob chav cable system thiab ib leeg cable.