Raws li qhov zaus thiab cov teeb liab-rau-suab nrov piv, twisted-pair cables feem ntau muab faib ua peb hom, tsib hom thiab super tsib hom, thiab rau hom. Lub qub muaj ib txoj kab uas hla nyias nyias thiab lub tom kawg muaj ib tug tuab hlau txoj kab uas hla. Cov qauv tshwj xeeb yog raws li hauv qab no:
Qeb 1 cable (CAT1):Qhov siab tshaj plaws bandwidth ntawm lub cable yog 750kHZ, uas yog siv rau lub tswb, los yog tsuas yog haum rau lub suab kis tau tus mob (thawj hom qauv yog tsuas yog siv rau cov xov tooj cables ua ntej thaum ntxov 1980s), tsis yog rau cov ntaub ntawv kis tau tus mob.
Qeb 2 cable (CAT2):Qhov siab tshaj plaws bandwidth ntawm lub cable yog 1MHZ, uas yog siv rau lub suab kis tau tus mob thiab cov ntaub ntawv kis tau tus mob nrog ib tug siab tshaj plaws kis tau tus mob ntawm 4Mbps. Nws yog ib txwm muaj nyob rau hauv lub qub token network uas siv 4MBPS tus qauv token dhau raws tu qauv.
Qeb 3 cable (CAT3):yog hais txog cov cable uas tau teev tseg hauv ANSI thiab EIA/TIA568 tus qauv. Lub cable muaj qhov sib kis ntawm 16MHz thiab qhov siab tshaj plaws ntawm 10Mbps (10Mbit / s). Nws yog tsuas yog siv rau lub suab thiab 10Mbit / s Ethernet (10BASE-T) thiab 4Mbit / s token nplhaib, qhov ntev tshaj plaws ntawm lub network ntu yog 100m, thiab cov khoom sib txuas hauv daim ntawv RJ tau ploj mus ntawm kev ua lag luam.
Qeb 4 cable (CAT4):Kev sib kis zaus ntawm hom kab no yog 20MHz, siv rau lub suab kis tau tus mob thiab cov ntaub ntawv kis tau tus mob siab tshaj plaws ntawm 16Mbps (xa mus rau 16Mbit / s token nplhaib), feem ntau yog siv rau token-raws li hauv zos network thiab 10BASE-T / 100BASE -T. Qhov siab tshaj plaws ntev ntawm lub network ntu yog 100m, thiab lub connector nyob rau hauv daim ntawv ntawm RJ yog tsis dav siv.
Qeb 5 cable (CAT5):Hom kab no tau nce winding ceev thiab cov khoom zoo insulating. Qhov siab tshaj plaws bandwidth ntawm lub cable yog 100MHz, thiab qhov siab tshaj plaws kis tau tus mob yog 100Mbps. Nws yog siv rau lub suab kis tau tus mob thiab qhov siab tshaj plaws kis tau tus mob yog 100Mbps cov ntaub ntawv kis tau tus mob, feem ntau yog siv nyob rau hauv 100BASE-T thiab 1000BASE-T tes hauj lwm, qhov siab tshaj plaws network ntu ntev yog 100m, siv RJ daim ntawv connectors. Qhov no yog qhov feem ntau siv Ethernet cables. Nyob rau hauv twisted-pair cables, cov khub sib txawv muaj qhov sib txawv nteg ntev. Feem ntau, lub sij hawm nteg ntawm 4 khub ntawm twisted khub yog nyob rau hauv 38.1 hli nyob rau hauv ntev, twisted nyob rau hauv ib tug counterclockwise kev taw qhia, thiab lub twisted ntev ntawm ib tug khub ntawm hlau yog nyob rau hauv 12.7 hli.
Cat5e cable (CAT5e):Cat5e muaj qis attenuation, tsawg dua crosstalk, siab dua attenuation rau crosstalk piv (ACR) thiab teeb liab-rau-nrov piv (SNR), me me yuam kev, thiab kev ua tau zoo txhim kho. Super Qeb 5 cable yog siv rau Gigabit Ethernet (1000Mbps).
Qeb 6 cable (CAT6):Kev xa tawm zaus ntawm hom kab no yog 1MHz-250MHz. Qhov kev nthuav dav attenuation crosstalk piv (PS-ACR) ntawm Qeb 6 txoj kab hluav taws xob yuav tsum muaj cov npoo loj ntawm 200MHz, uas muab 2 npaug ntawm Super Tsib hom bandwidth. Kev sib kis tau zoo ntawm Qeb 6 cabling yog siab dua li ntawm Super Qeb 5 tus qauv, thiab yog qhov tsim nyog tshaj plaws rau cov ntawv thov nrog tus nqi sib kis siab dua 1Gbps. Ib qho tseem ceeb sib txawv ntawm Qeb 6 thiab Qeb 5 yog tias nws txhim kho qhov kev ua tau zoo ntawm crosstalk thiab rov poob. Rau lub cim tshiab ntawm kev siv puv-duplex high-speed network, kev ua haujlwm zoo rov qab los yog qhov tseem ceeb heev. Cov qauv txuas yooj yim raug muab tso tseg hauv rau hom qauv. Cov txheej txheem xaim siv lub hnub qub topology. Qhov kev ncua deb yuav tsum yog: qhov ntev ntawm qhov txuas mus tas li tsis tuaj yeem tshaj 90m, thiab qhov ntev channel tsis tuaj yeem tshaj 100m.
Super Qeb 6 lossis 6A (CAT6A):Kev sib kis bandwidth ntawm hom khoom no yog nyob nruab nrab ntawm Qeb 6 thiab Qeb 7, kev sib kis zaus yog 500MHz, kev sib kis ceev yog 10Gbps, thiab cov txheej txheem sab nraud yog 6mm. Zoo li xya yam khoom, lub teb chaws tsis tau tshaj tawm cov qauv kev sim, tab sis muaj cov khoom zoo li no hauv kev lag luam, thiab txhua tus neeg tsim khoom tshaj tawm cov nqi ntsuas.
Qeb 7 kab (CAT7):Kev sib kis zaus yog 600MHz, kev sib kis ceev yog 10Gbps, tus qauv txheej txheej ntawm ib lub xaim yog 8 hli, thiab cov txheej txheem txheej txheej ntawm cov tub ntxhais hlau yog 6 hli. Qhov loj dua tus naj npawb, qhov tshiab version, qhov kev siv thev naus laus zis ntau dua, qhov dav ntawm bandwidth, thiab tau kawg qhov kim dua. Cov kev sib txawv ntawm kev sib tw-pair marking txoj kev yog teev nyob rau hauv txoj kev no. Yog tias lawv yog hom qauv, lawv raug cim hauv CATx hom. Piv txwv li, feem ntau siv Qeb 5 thiab Qeb 6 xov hlau yog cim raws li CAT 5 thiab CAT 6 ntawm daim tawv nqaij ntawm kab. Yog hais tias nws yog ib qho kev txhim kho version, nws yuav raug cim raws li xe. Piv txwv li, super tsib-qib kab yuav raug cim raws li 5e (cov ntawv sau qis, tsis yog tus ntawv loj). Tsis hais txog ntawm txoj kab, qhov attenuation nce raws li qhov zaus nce. Thaum tsim cov xaim, xav txog tias lub teeb liab attenuated yuav tsum muaj qhov loj txaus kom nws tuaj yeem raug kuaj pom ntawm qhov kawg tau txais nyob rau hauv cov xwm txheej ntawm lub suab nrov cuam tshuam. Tus nqi siab npaum li cas (Mb / s) tus khub twisted tuaj yeem xa cov ntaub ntawv tseem muaj ntau yam ua nrog cov txheej txheem encoding ntawm cov teeb liab digital.
