Cov kab sib txawv ntawm USB4

Universal Serial Bus (USB) yog ib qho ntawm cov interfaces uas siv tau ntau yam tshaj plaws hauv ntiaj teb. Nws tau pib los ntawm Intel thiab Microsoft thiab muaj cov yam ntxwv zoo li hot plug and play li sai tau. Txij li thaum muaj USB interface xyoo 1994, tom qab 26 xyoo ntawm kev txhim kho, los ntawm USB 1.0/1.1, USB2.0, USB 3.x, thaum kawg tau tsim mus rau USB4 tam sim no; Tus nqi kis tau kuj tau nce ntxiv los ntawm 1.5Mbps mus rau qhov tseeb 40Gbps. Tam sim no, tsis yog cov xov tooj ntse tshiab tsim tawm xwb txhawb nqa Type-C interface, tab sis kuj tseem muaj cov khoos phis tawj sau ntawv, cov koob yees duab digital, cov neeg hais lus ntse, cov khoom siv fais fab mobile thiab lwm yam khoom siv tau pib siv TYPE-C specification USB interface, uas tau ua tiav hauv kev lag luam tsheb. Hloov chaw USB-A, Tesla tus Qauv 3 tshiab muaj cov chaw nres nkoj usbC, thiab Apple tau hloov nws cov macBooks thiab AirPods Pro mus rau cov chaw nres nkoj USB Type-C ntshiab rau kev xa cov ntaub ntawv thiab them. Ntxiv rau, raws li qhov yuav tsum tau ua ntawm eu, kua kuj tseem yuav siv USB hom-c interface hauv iPhone15 yav tom ntej, thiab nws tsis muaj qhov tsis ntseeg tias USB4 yuav yog lub ntsiab khoom interface hauv kev lag luam yav tom ntej.

Cov kev cai rau cov xov hlau USB4

Qhov kev hloov pauv loj tshaj plaws hauv USB4 tshiab yog qhov kev qhia txog Thunderbolt protocol specification uas Intel tau qhia nrog usb-if. Kev khiav hla ob txoj kev sib txuas, bandwidth tau ob npaug rau 40Gbps, thiab Tunnelling txhawb nqa ntau cov ntaub ntawv thiab cov qauv tso saib. Piv txwv li suav nrog PCI Express thiab DisplayPort. Tsis tas li ntawd, USB4 tswj hwm kev sib raug zoo nrog kev qhia txog cov qauv tshiab hauv qab, ua rov qab sib xws nrog USB3.2 / 3.1 / 3.0 / 2.0, nrog rau Thunderbolt 3. Yog li ntawd, USB4 tau dhau los ua tus qauv USB nyuaj tshaj plaws txog niaj hnub no, xav kom cov neeg tsim qauv nkag siab txog USB4, USB3.2, USB2.0, USB Type-C thiab USB Power Delivery specifications. Tsis tas li ntawd, cov neeg tsim qauv yuav tsum nkag siab txog PCI Express thiab DisplayPort specifications, nrog rau HIGH-DEFINITION content protection (HDCP) technology uas sib xws nrog USB4 DisplayPort hom, thiab cov cables thiab connectors peb paub txog muaj cov kev cai siab dua kom ua tau raws li cov kev cai ua haujlwm hluav taws xob ntawm cov khoom tiav USB4 cable.

Ib qho coaxial version ntawm USB4 tau tawm los ntawm qhov tsis muaj qhov twg

Nyob rau hauv lub caij USB3.1 10G, ntau lub tuam txhab tsim khoom tau siv cov qauv coaxial los ua kom tau raws li qhov xav tau ntawm kev ua haujlwm siab zaus. Coaxial version tsis tau siv rau hauv USB series ua ntej, nws cov xwm txheej siv feem ntau yog Phau Ntawv Sau, xov tooj ntawm tes, GPS, ntsuas ntsuas, Bluetooth thev naus laus zis, thiab lwm yam. Kev siv dav dav ntawm cov lus piav qhia cable yog kab kho mob coaxial, teflon coaxial hluav taws xob kab, Xov tooj cua zaus coaxial hlau, thiab lwm yam, nrog rau kev lag luam ntau tus nqi tswj hwm, nyob rau hauv lub caij USB3.1 ntawm stranding kom ua tau raws li qhov ua tau zoo ntawm cov khoom sai sai nyob hauv kev lag luam, tab sis nrog rau kev lag luam USB4 rau kev xa xov tooj cua zaus siab xav tau ntau dua thiab ntau dua, thiab kev xa xov ceev ceev xav tau hlau muaj zog tiv thaiv kev cuam tshuam thiab kev ua haujlwm hluav taws xob ruaj khov. Txhawm rau kom ntseeg tau tias kev ruaj khov ntawm kev xa xov tooj cua zaus siab, tam sim no USB4 tseem yog lub ntsiab coaxial version, coaxial ntau lawm thiab kev tsim khoom yog ib qho txheej txheem nyuaj, los daws qhov kev siv zaus siab thiab kev ceev ceev xav tau cov khoom siv tsim khoom tsim nyog thiab cov txheej txheem tsim khoom tiav thiab ruaj khov. Hauv kev tsim cov khoom, kev xaiv cov khoom siv, cov txheej txheem tsis thiab kev tswj cov txheej txheem, cov kev ntsuas hluav taws xob ntawm kev kuaj mob tshwj xeeb ua lub luag haujlwm tseem ceeb, thoob plaws hauv kev txhim kho bottleneck ntawm cov qauv coaxial, ntxiv rau koj (tus nqi khoom siv, tus nqi ua haujlwm kim) lwm yam zoo, tab sis kev txhim kho ntawm kev ua lag luam ib txwm tig mus rau yuav ua li cas kom ua tiav tus nqi loj tshaj plaws, Khub ntawm twist version yeej ib txwm nyob hauv qhov sib txawv ntawm kev tshawb fawb thiab kev txhim kho coaxial thiab kev tawg.

Nws tuaj yeem pom los ntawm cov qauv ntawm kab coaxial, los ntawm sab hauv mus rau sab nraud, raws li: tus neeg xyuas pib hauv nruab nrab, txheej rwb thaiv tsev, txheej sab nraud (hlau mesh), daim tawv nqaij hlau. Coaxial cable yog ib qho sib xyaw ua ke ntawm ob tus neeg xyuas pib. Lub xov hlau hauv nruab nrab ntawm coaxial cable yog siv los xa cov teeb liab. Lub hlau tiv thaiv net ua ob lub luag haujlwm: ib qho yog los muab lub voj voog tam sim no rau lub teeb liab ua av sib koom, thiab lwm qhov yog los tiv thaiv kev cuam tshuam ntawm lub suab nrov electromagnetic rau lub teeb liab ua lub net tiv thaiv. Lub xov hlau nruab nrab thiab lub network tiv thaiv ntawm cov txheej polypropylene rwb thaiv tsev semi-foaming, cov txheej rwb thaiv tsev txiav txim siab cov yam ntxwv ntawm kev sib kis ntawm cov cable, thiab tiv thaiv cov xov hlau nruab nrab zoo, kim muaj laj thawj kim.

USB4 twisted pair version yuav los txog?

Thaum cov hluav taws xob circuits ua haujlwm ntawm cov zaus siab dua, cov yam ntxwv hluav taws xob ntawm cov khoom siv hluav taws xob nyuaj rau kev tswj hwm. Thaum qhov loj me ntawm cov khoom lossis tag nrho cov hluav taws xob sib piv rau qhov wavelength ntawm qhov zaus ua haujlwm yog ntau dua ib qho, qhov inductance capacitance tus nqi ntawm lub voj voog, lossis cov khoom siv cov txiaj ntsig parasitic ntawm cov khoom siv thiab lwm yam, txawm tias thaum peb siv cov qauv khub hlau, kev sim cov zaus yooj yim tsis tuaj yeem ua tau raws li qhov xav tau ntawm cov neeg siv khoom, thiab yoog tau dua li cov qauv coaxial thiab nws txoj kab uas hla yog deb, Vim li cas kuv thiaj li tsis tuaj yeem siv cov khub USB hauv cov khoom ua ke? Feem ntau, qhov siab dua ntawm kev siv cable, qhov luv dua ntawm qhov wavelength ntawm lub teeb liab, thiab qhov me dua ntawm qhov skew, qhov zoo dua qhov sib npaug. Txawm li cas los xij, qhov splicing me me dhau yuav ua rau muaj kev ua haujlwm tsawg thiab sprain ntawm cov hlau insulated core. Lub suab ntawm cov kab khub yog me heev, tus lej ntawm torsion yog ntau, thiab qhov kev ntxhov siab torsion ntawm seem yog concentrated hnyav, ua rau muaj kev hloov pauv loj thiab kev puas tsuaj ntawm cov txheej rwb thaiv tsev, thiab thaum kawg ua rau muaj kev cuam tshuam ntawm electromagnetic teb, cuam tshuam rau qee qhov ntsuas hluav taws xob xws li SRL tus nqi thiab attenuation. Thaum muaj qhov sib txawv ntawm cov rwb thaiv tsev, qhov deb ntawm cov neeg coj hluav taws xob hloov pauv tas li vim yog qhov kev hloov pauv thiab kev sib hloov ntawm cov kab rwb thaiv tsev ib kab, uas ua rau muaj kev hloov pauv ntawm impedance. Lub sijhawm hloov pauv ntev heev. Hauv kev xa xov tooj cua zaus siab, qhov kev hloov pauv qeeb no tuaj yeem pom los ntawm cov nthwv dej electromagnetic thiab cuam tshuam rau tus nqi poob rov qab. Tus qauv USB4 khub tsis tuaj yeem siv ua pawg.

Tsis yog rau hauv av, tab sis tsis xav siv koj txoj kev tuag coaxial, yog li cov neeg pib txheeb xyuas qhov sib txawv USB4 shielding txoj hauv kev ua cov khoom, kom wring qhov tsis zoo tshaj plaws yog yooj yim twisted conductor, thiab qhov sib txawv nrog cov pob ntawv sib luag ncaj qha rau kev ua haujlwm hauv tsev, zam kev sib txhuam conductor, raws li peb txhua tus paub, tam sim no siv qhov sib txawv ntawm SAS, SFP + thiab lwm yam yog siv hauv kab ceev ceev, Txaus los qhia tias nws qhov kev ua tau zoo yuav tsum siab dua li qhov version stranded, lub luag haujlwm tseem ceeb ntawm cov kab ntaub ntawv zaus siab yog xa cov ntaub ntawv teeb liab, tab sis thaum peb siv nws nyob ib puag ncig yuav tshwm sim txhua yam kev cuam tshuam tsis zoo. Cia peb xav txog yog tias cov teeb liab cuam tshuam no nkag mus rau hauv tus neeg coj sab hauv ntawm cov kab ntaub ntawv thiab superimpose ntawm cov teeb liab xa thawj, puas yog nws ua tau los cuam tshuam lossis hloov cov teeb liab xa thawj, yog li ua rau muaj teeb liab poob lossis teeb meem? Thiab qhov sib txawv ntawm cov ntawv ci txhuas yog xa cov ntaub ntawv rau peb ua lub luag haujlwm ntawm kev tiv thaiv thiab kev tiv thaiv, siv los txo qhov cuam tshuam ntawm sab nraud cov teeb liab ywj pheej rau kev xa xov, cov khoom siv pob khoom tseem ceeb thiab cov ntawv ci txhuas rub yog siv cov ntawv ci txhuas sealing thiab kev tiv thaiv, ib sab lossis ob sab txheej ntawm cov yas zaj duab xis, lu: su composite ntawv ci uas siv ua lub ntaub thaiv ntawm lub cable. Cov ntawv ci cable xav tau roj tsawg dua ntawm qhov chaw, tsis muaj qhov thiab cov khoom siv kho tshuab siab. Cov txheej txheem ntawm kev qhwv yog sau ob lub xov hlau insulated thiab cov xov hlau hauv av ua ke los ntawm lub tshuab qhwv. Tib lub sijhawm, ib txheej ntawm cov ntawv ci txhuas thiab ib txheej ntawm cov ntaub ntawv polyester nplaum rau ntawm cov mov ci sab nraud yog siv los tiv thaiv cov xov hlau khub thiab ruaj khov cov qauv ntawm cov xov hlau qhwv. Cov txheej txheem no muaj cov nyhuv tseem ceeb rau cov khoom siv hlau, suav nrog impedance, qeeb sib txawv, attenuation, vim tias qhov no yuav tsum tsim los ntawm kev xav tau tes ua, ua qhov kev sim rau cov khoom siv hluav taws xob, txhawm rau kom ntseeg tau tias cov xov hlau qhwv yog raws li qhov xav tau. Tau kawg, tsis yog txhua cov kab ntaub ntawv muaj ob txheej ntawm kev tiv thaiv. Ib txhia muaj ntau txheej, ib txhia muaj tsuas yog ib txheej, lossis tsis muaj hlo li. Kev tiv thaiv yog kev sib cais hlau ntawm ob thaj chaw kom tswj tau qhov kev xa hluav taws xob thiab kev tawg ntawm cov hluav taws xob, sib nqus thiab hluav taws xob los ntawm ib thaj chaw mus rau lwm qhov. Yuav kom meej meej, lub hauv paus ntawm tus neeg coj hluav taws xob yog ib puag ncig los ntawm lub cev tiv thaiv kom tiv thaiv lawv kom tsis txhob raug cuam tshuam los ntawm lub zog hluav taws xob sab nraud / teeb liab cuam tshuam, thiab kom tiv thaiv lub zog hluav taws xob cuam tshuam / teeb liab kom tsis txhob kis mus rau sab nraud. USB sib txawv khub kev kuaj teeb liab zaus siab tuaj yeem sib piv rau coaxial, sib txawv khub USB4 cable yuav los txog.