Cov teeb meem thiab kev daws teeb meem tau ntsib hauv kev teeb tsa thiab siv cov khoom siv fiber ntau optical transceivers
Thawj kauj ruam: thawj zaug saib seb qhov taw qhia lub teeb ntawm optical fiber ntau transceiver lossis optical module thiab cov twisted khub chaw nres nkoj qhov taw qhia teeb nyob rau?
1. Yog hais tias qhov chaw nres nkoj kho qhov muag (FX) qhov taw qhia ntawm A transceiver yog nyob rau thiab qhov chaw nres nkoj kho qhov muag (FX) qhov taw qhia ntawm B transceiver tsis nyob, qhov txhaum yog nyob rau sab A transceiver: ib qho ua tau yog: A transceiver (TX) optical kis tau tus mob Qhov chaw nres nkoj tsis zoo vim qhov chaw nres nkoj kho qhov muag (RX) ntawm B transceiver tsis tau txais cov teeb liab optical; Lwm qhov ua tau yog: muaj teeb meem nrog qhov txuas fiber ntau ntawm qhov chaw nres nkoj ntawm qhov chaw xa khoom ntawm A transceiver (TX), xws li lub qhov muag pom qhov tawg tawg.
2. Yog tias qhov taw qhia FX ntawm lub transceiver raug kaw, thov xyuas kom meej tias qhov txuas fiber ntau yog sib txuas? Ib qho kawg ntawm cov fiber ntau jumper yog txuas rau hauv kev sib txuas; lwm kawg yog kev cob cog rua nyob rau hauv cross hom.
3. Qhov taw qhia twisted khub (TP) yog tawm, thov xyuas kom tseeb tias qhov sib tw twisted khub tsis raug lossis qhov kev sib txuas tsis raug? Thov siv lub ntsuas txuas txuas ntxiv txhawm rau txhawm rau kuaj pom (txawm li cas los xij, qhov taw qhia sib tw twisted ntawm qee qhov transceivers yuav tsum tau tos rau cov saw hlau fiber ntau Teeb tom qab txoj kev txuas).
4. Qee qhov transceivers muaj ob qhov chaw nres nkoj RJ45: (ToHUB) qhia tias txoj kab txuas mus rauhloovyog ib txoj kab ncaj nraim; (ToNode) qhia tias txoj kab txuas mus rau qhovhloovyog ib txoj kab crossover.
5. Qee lub tshuab plaub hau muaj MPRhloovntawm sab: nws txhais tau hais tias txoj kab txuas mus rau lubhloovyog ib txoj kev ncaj nraim; DTEhloov: txoj kab txuas mus rau lubhloovyog txoj kev hla dhau.
Kauj Ruam 2: Tshawb xyuas thiab txiav txim seb puas muaj teeb meem nrog fiber ntau jumpers thiab fiber optic cables?
1. On-off nrhiav kom pom ntawm optical fiber ntau txuas: siv laser teeb, hnub ci, thiab lwm yam kom pom qhov kawg ntawm lub fiber jumper; saib seb puas muaj teeb pom kev ntawm lwm qhov kawg? Yog tias pom lub teeb pom kev, nws qhia tau tias lub fiber ntau jumper tsis tawg.
2. Kev soj ntsuam ntawm kev sib txuas ntawm cov kab hluav taws xob kho qhov muag thiab kev sib txuas: siv lub teeb nyem laser, lub hnub ci, lub teeb ci ntsa iab kom pom ib qho kawg ntawm cov khoom siv kho qhov muag cable txuas lossis txuas txuas; saib seb puas muaj qhov pom kev ntawm qhov kawg? Yog tias pom lub teeb pom kev, nws qhia tau hais tias lub optical cable tsis tawg.
Kauj ruam 3: Puas yog ib nrab / tag nrho duplex txoj kev tsis raug?
Qee cov transceivers muaj FDXhloovntawm sab: puv duplex; HDXhloov: ib nrab duplex.
Kauj Ruam 4: Ntsuas nrog lub ntsuas hluav taws xob kho qhov muag
Lub zog luminous ntawm optical fiber transceiver lossis optical module nyob rau hauv ib txwm mob: multimode: ntawm -10db-18db; ib hom 20 km: nruab nrab ntawm -8db–15db; ib hom 60 km: nruab nrab ntawm -5db-12db; Yog tias lub zog luminous ntawm optical fiber transceiver nyob nruab nrab ntawm: -30db-45db, ces nws tuaj yeem txiav txim siab tias muaj teeb meem nrog lub transceiver no.
Cov teeb meem xav tau kev saib xyuas ntawm optical fiber transceiver
Rau lub hom phiaj ntawm kev yooj yim, nws yog qhov zoo dua los siv cov lus nug thiab lus teb style, uas tuaj yeem pom ntawm ib nrais muag.
1. Puas yog optical transceiver nws tus kheej txhawb nqa puv-duplex thiab ib nrab-duplex?
Qee cov chips ntawm kev ua lag luam tsuas tuaj yeem siv tag nrho-duplex ib puag ncig tam sim no, thiab tsis tuaj yeem txhawb nqa ib nrab-duplex. Piv txwv li, yog tias lawv txuas nrog lwm hom ntawmhloov(SWITCH) lossis hub teeb (HUB), thiab nws siv ib nrab-duplex hom, nws yuav twv yuav raug hu ua teeb meem loj thiab pob ntawv poob.
2. Koj puas tau sim kev sib txuas nrog lwm cov fiber ntau transceivers?
Tam sim no, muaj ntau thiab ntau dua fiber ntau optic transceivers ntawm lub khw. Yog tias qhov sib xyaw ua ke ntawm transceivers ntawm ntau hom tsis raug kuaj ua ntej, nws tseem yuav ua rau pob ntawv poob, lub sijhawm xa mus ntev, thiab nrawm thiab qeeb.
3. Puas muaj cov cuab yeej kev nyab xeeb los tiv thaiv pob ntawv poob?
Txhawm rau txo cov nqi, qee cov tuam ntxhab siv cov ntawv sau npe cov ntaub ntawv sib kis los txo cov nqi. Qhov loj tshaj qhov tsis zoo ntawm txoj kev no yog qhov kev sib kis tsis ruaj khov thiab pob ntawv poob. Qhov zoo tshaj plaws yog siv cov kab tsis zoo tsim, uas muaj kev nyab xeeb Tsis txhob poob cov ntaub ntawv.
4. Kub adaptability?
Lub optical fiber transceiver nws tus kheej yuav tsim kom muaj cua sov thaum nws siv. Thaum qhov kub thiab txias siab dhau lawm (tsis ntau tshaj 50 ° C), seb qhov optical fiber transceiver ua haujlwm zoo yog qhov tsim nyog rau cov neeg siv khoom xav!
5. Puas yog nws ua tau raws li IEEE 802.3u tus qauv?
Yog hais tias lub optical fiber transceiver ua raws li IEEE802.3 tus qauv, uas yog, ncua sij hawm yog tswj ntawm 46 ntsis, yog tias nws tshaj 46 ntsis, nws txhais tau hais tias qhov kev ncua deb ntawm lub optical fiber transceiver yuav luv luv.
Cov ntsiab lus thiab kev daws teeb meem ntawm cov teeb meem txhaum cai ntawm fiber ntau optic transceivers
Muaj ntau ntau hom fiber ntau optic transceivers, tab sis cov txheej txheem ntawm kev kuaj mob yog qhov zoo ib yam. Hauv cov ntsiab lus, qhov txhaum uas tshwm sim hauv fiber ntau optic transceivers yog raws li hauv qab no:
1. Lub teeb hluav taws xob raug kaw, lub zog hluav taws xob tsis raug;
2. Lub teeb Link yog tawm, thiab qhov txhaum yuav ua raws li hauv qab no:
a. Xyuas seb cov kab hluav taws xob kho qhov muag puas puas lawm
b. Xyuas seb cov kab hluav taws xob puas loj dhau thiab tshaj qhov tau txais cov khoom siv
c. Xyuas seb lub fiber ntau txuas txuas puas raug, lub zos TX txuas nrog cov chaw taws teeb RX, thiab cov chaw taws teeb TX txuas nrog RX hauv zos.
d. Xyuas seb lub optical fiber connector puas tau muab tso rau hauv lub cuab yeej interface tsis zoo, seb hom jumper puas phim lub cuab yeej interface, seb hom ntaus ntawv puas phim cov khoom siv fiber ntau, thiab seb qhov ntev ntawm lub cuab yeej cuam tshuam qhov kev ncua deb.
3. Lub Circuit Court Link lub teeb raug kaw, thiab qhov txhaum yuav ua raws li hauv qab no:
a. Xyuas seb lub network cable puas lawm;
b. Xyuas seb hom kev sib txuas puas sib xws: daim npav network thiabrouterssiv cov kab mob sib kis, thiabhloov, hubs thiab lwm yam khoom siv ncaj qha los ntawm cables;
c. Xyuas seb qhov sib kis tus nqi ntawm cov cuab yeej sib tw;
4. Network pob ntawv poob yog qhov loj heev, thiab qhov ua tsis tiav yog raws li hauv qab no:
a. Qhov chaw nres nkoj hluav taws xob ntawm lub transceiver tsis phim lub network ntaus ntawv interface, lossis hom duplex ntawm lub cuab yeej interface ntawm ob qho kawg.
b. Yog tias muaj teeb meem nrog tus khub twisted thiab RJ-45 lub taub hau, kos
c. Optical fiber kev twb kev txuas teeb meem, seb lub jumper yog raws li nyob rau hauv lub ntaus ntawv interface, thiab seb lub pigtail phim lub jumper thiab coupler.
5. Tom qab cov fiber ntau transceiver txuas nrog, ob qhov kawg tsis tuaj yeem sib txuas lus
a Cov fiber ntau kho qhov muag yog thim rov qab, thiab cov khoom siv kho qhov muag txuas nrog TX thiab RX tau hloov pauv
b. RJ45 interface tsis zoo txuas nrog cov cuab yeej sab nraud (cuam tshuam ncaj qha los ntawm kev sib tshuam)
Optical fiber interface (ceramic ferrule) tsis sib xws. Qhov kev ua txhaum no feem ntau tshwm sim hauv 100M transceiver nrog photoelectric kev sib nrig sib tswj muaj nuj nqi. Lub photoelectric mutual tswj transceiver tsis muaj txiaj ntsig.
6. On-off tshwm sim
a. Tej zaum nws yuav yog tias qhov attenuation ntawm txoj kev kho qhov muag loj dhau. Lub sijhawm no, lub zog kho qhov muag ntawm qhov kawg tau txais tuaj yeem ntsuas nrog lub ntsuas hluav taws xob kho qhov muag. Yog tias nws nyob ze ntawm qhov tau txais kev nkag siab ntau, nws tuaj yeem txiav txim siab raws li kev kho qhov muag tsis ua haujlwm nyob rau thaj tsam ntawm 1-2dB
b. Covhloovtxuas nrog lub transceiver tej zaum yuav faulty. Lub sijhawm no, lubhloovyog hloov nrog lub PC, uas yog, ob lub transceivers txuas ncaj qha rau PC, thiab ob qhov kawg yog ua ke nrog PING.
c. Lub transceiver yuav faulty. Thaum lub sij hawm no, txuas ob kawg ntawm lub transceiver rau lub PC (tsis txhob hla lubhloov). Tom qab ob qhov kawg tsis muaj teeb meem nrog PING, hloov cov ntaub ntawv loj dua (100M) ntawm ib kawg mus rau lwm qhov kawg. Saib xyuas nws Ceev, yog tias qhov ceev qeeb heev (ntau tshaj 15 feeb rau kev hloov cov ntaub ntawv hauv qab 200M), nws tuaj yeem raug txiav txim raws li qhov tsis ua haujlwm transceiver.
d. Kev sib txuas lus sib tsoo tom qab lub sijhawm, uas yog, kev sib txuas lus tsis ua haujlwm, thiab nws rov qab mus rau qhov qub tom qab rov pib dua.
Qhov no tshwm sim feem ntau tshwm sim los ntawm covhloov. Covhloovyuav ua CRC kev tshawb nrhiav qhov yuam kev thiab tshawb xyuas ntev ntawm tag nrho cov ntaub ntawv tau txais, thiab xyuas tias cov pob ntawv tsis raug yuav raug muab pov tseg, thiab cov pob ntawv raug yuav raug xa mus.Txawm li cas los xij, qee cov pob ntawv uas tsis raug hauv cov txheej txheem no tsis tuaj yeem tshawb pom hauv CRC qhov yuam kev nrhiav thiab ntev. kuaj. Cov pob ntawv zoo li no yuav tsis raug xa tawm lossis muab pov tseg thaum lub sijhawm xa mus, thiab lawv yuav khaws cia rau hauv lub cache dynamic. Hauv (tsis), nws tsis tuaj yeem xa tawm. Thaum tsis muaj puv, nws yuav ua rau lubhloovmus tsoo. Vim hais tias restarting lub transceiver los yog restarting lubhloovnyob rau lub sijhawm no tuaj yeem rov qab sib txuas lus mus rau qhov qub, cov neeg siv feem ntau xav tias nws yog qhov teeb meem ntawm transceiver.
8. Transceiver test method
Yog tias koj pom tias muaj teeb meem nrog kev sib txuas ntawm transceiver, thov sim ua raws li cov hauv qab no kom paub qhov ua rau tsis ua haujlwm.
a. Ze-kawg xeem:
Cov khoos phis tawj ntawm ob qho kawg tuaj yeem ping, yog tias nws tuaj yeem pinged, nws ua pov thawj tias tsis muaj teeb meem nrog fiber ntau optic transceiver. Yog tias qhov kev sim ze-kawg tsis sib txuas lus, nws tuaj yeem txiav txim siab tias yog fiber ntau transceiver tsis ua haujlwm.
b Kev ntsuas chaw taws teeb:
Cov khoos phis tawj ntawm ob qhov kawg yog ua ke rau PING. Yog tias PING tsis muaj, koj yuav tsum xyuas seb qhov kev sib txuas ntawm qhov chaw kho qhov muag puas yog qhov qub thiab seb qhov kev xa tawm thiab tau txais lub zog ntawm optical fiber transceiver puas nyob rau hauv qhov kev tso cai. Yog tias nws tuaj yeem pinged, nws ua pov thawj tias qhov kev sib txuas ntawm qhov muag yog qhov qub. Nws tuaj yeem txiav txim siab tias qhov txhaum yog nyob ntawmhloov.
c. Kev ntsuam xyuas tej thaj chaw deb los txiav txim qhov yuam kev:
Ua ntej txuas ib kawg mus rau lubhloovthiab ob qhov kawg rau PING. Yog tias tsis muaj qhov txhaum, nws tuaj yeem txiav txim siab ua qhov txhaum ntawm lwm tushloov.
Cov teeb meem txhaum cai raug txheeb xyuas hauv qab no los ntawm cov lus nug thiab lus teb
Raws li kev saib xyuas txhua hnub thiab cov teeb meem ntawm cov neeg siv, kuv yuav xaus lawv ib qho los ntawm ib qho ntawm cov lus nug thiab cov lus teb, vam tias yuav coj qee qhov kev pab rau cov neeg ua haujlwm saib xyuas, txhawm rau txiav txim siab qhov ua txhaum raws li qhov tshwm sim txhaum cai, txheeb xyuas qhov txhaum. taw tes, thiab "kho cov tshuaj".
1. Q: Kev sib txuas zoo li cas yog siv thaum lub transceiver RJ45 chaw nres nkoj txuas nrog lwm yam khoom siv?
Teb: RJ45 chaw nres nkoj ntawm lub transceiver yog txuas nrog PC network card (DTE cov ntaub ntawv davhlau ya nyob twg cov cuab yeej) siv tus ntoo khaub lig-twisted khub, thiab txuas nrog HUB los yogSWITCH(DCE cov khoom siv sib txuas lus cov ntaub ntawv) siv cov sib tw twisted khub.
2. Q: Dab tsi yog vim li cas vim li cas lub teeb TxLink raug kaw?
Teb: 1. Qhov sib tw twisted tsis ncaj ncees lawm txuas; 2. Lub taub hau twisted siv lead ua tsis zoo nrog lub cuab yeej lossis qhov zoo ntawm cov twisted khub nws tus kheej; 3. Cov cuab yeej txuas tsis zoo.
3. Q: Dab tsi yog vim li cas lub teeb TxLink tsis ntsais tab sis nyob twj ywm tom qab cov fiber ntau txuas nrog ib txwm?
Teb: 1. Qhov kev ncua deb feem ntau yog ntev dhau lawm; 2. Kev sib raug zoo nrog daim npav network (txuas nrog PC).
4. Q: Dab tsi yog vim li cas vim li cas lub teeb FxLink raug kaw?
Lub fiber cable txuas tsis raug, txoj kev sib txuas kom raug yog TX-RX, RX-TX, lossis hom fiber ntau tsis raug;
Qhov kev sib kis tau ntev dhau los lossis qhov kev poob nruab nrab yog qhov loj dhau, dhau qhov nominal poob ntawm cov khoom no. Txoj kev daws teeb meem yog los ntsuas kom txo qhov kev poob nruab nrab lossis hloov nws nrog qhov ntev ntawm kev sib kis transceiver.
Kev khiav hauj lwm kub ntawm optical fiber transceiver yog siab dhau.
5. Q: Dab tsi yog vim li cas vim li cas lub teeb FxLink tsis ntsais tab sis nyob twj ywm tom qab fiber ntau txuas nrog ib txwm?
Teb: Qhov kev ua txhaum no feem ntau yog tshwm sim los ntawm qhov kev sib kis tau ntev dhau los lossis qhov kev poob nruab nrab loj dhau, dhau qhov nominal poob ntawm cov khoom no. Txoj kev daws teeb meem yog kom txo qis qhov poob nruab nrab lossis hloov nws nrog qhov ntev ntawm kev sib kis transceiver.
6. Q: Kuv yuav ua li cas yog tias tsib lub teeb ci tag nrho los yog qhov taw qhia zoo li qub tab sis tsis muaj peev xwm kis tau?
Teb: Feem ntau, koj tuaj yeem tua lub hwj chim thiab rov pib dua li qub.
7. Q: ambient kub ntawm lub transceiver yog dab tsi?
Teb: Lub optical fiber module tau cuam tshuam zoo heev los ntawm qhov kub thiab txias. Txawm hais tias nws muaj qhov tsis siv neeg nce hauv Circuit Court, tom qab qhov kub thiab txias tshaj qhov ntau yam, lub zog xa hluav taws xob ntawm cov khoom siv kho qhov muag tau cuam tshuam thiab txo qis, yog li ua rau qhov tsis zoo ntawm cov teeb liab optical network tsis muaj zog thiab ua rau pob ntawv poob tus nqi nce, txawm tias. disconnecting qhov txuas optical; (feem ntau qhov kev khiav hauj lwm kub ntawm qhov optical fiber module tuaj yeem ncav cuag 70 ℃). uas tshaj qhov txwv sab sauv ntawm lub thav duab ntev ntawm lub optical transceiver thiab muab pov tseg los ntawm nws, qhia txog qhov siab lossis tsis ua tiav pob ntawv poob tus nqi.
Qhov siab tshaj plaws kis tau tus mob, cov pob ntawv IP dav dav yog 18 bytes, thiab MTU yog 1500 bytes; tam sim no high-end kev sib txuas lus cov cuab yeej tsim khoom lag luam muaj cov txheej txheem sab hauv network, feem ntau siv cov txheej txheem pob ntawv cais, yuav ua rau cov pob ntawv IP nce ntxiv, yog tias cov ntaub ntawv yog 1500 lo lus Tom qab IP pob ntawv, qhov loj ntawm IP pob ntawv yuav ntau dua 18 thiab muab pov tseg) , kom qhov luaj li cas ntawm cov pob ntawv xa mus rau ntawm kab raws li lub network ntaus ntawv txwv ntawm tus ncej ntev. 1522 bytes ntawm pob ntawv tau ntxiv VLANtag.
9. Q: Tom qab lub chassis tau ua haujlwm rau lub sijhawm, vim li cas qee daim npav tsis ua haujlwm zoo?
Teb: Lub chassis thaum ntxov fais fab mov txais yuav hom relay. Cov khoom siv hluav taws xob tsis txaus thiab cov kab poob loj yog cov teeb meem loj. Tom qab lub chassis tau ua haujlwm rau lub sijhawm, qee daim npav tsis tuaj yeem ua haujlwm ib txwm. Thaum qee daim npav raug rho tawm, daim npav seem ua haujlwm ib txwm ua. Tom qab lub chassis tau ua haujlwm ntev, lub connector oxidation ua rau lub connector loj poob. Cov khoom siv hluav taws xob no poob dhau qhov kev cai. Qhov xav tau ntau yam yuav ua rau daim npav chassis txawv txav. High-power Schottky diodes yog siv los cais thiab tiv thaiv lub zog chassishloov, txhim kho daim ntawv ntawm lub connector, thiab txo cov hwj huam mov poob los ntawm kev tswj Circuit Court thiab lub connector. Nyob rau tib lub sijhawm, lub zog rov ua dua ntawm cov khoom siv hluav taws xob tau nce ntxiv, uas ua rau cov khoom siv hluav taws xob rov qab tau yooj yim thiab nyab xeeb, thiab ua rau nws tsim nyog rau cov kev xav tau ntawm kev ua haujlwm ntev tsis muaj kev cuam tshuam.
10. Q: Dab tsi ua haujlwm ntawm lub tswb txuas rau ntawm lub transceiver muaj?
Teb: Lub transceiver muaj qhov txuas tswb muaj nuj nqi (linkloss). Thaum lub fiber ntau raug txiav, nws yuav cia li rov qab mus rau qhov chaw nres nkoj hluav taws xob (uas yog, qhov taw qhia ntawm qhov chaw nres nkoj hluav taws xob kuj yuav tawm mus). Yog tiashloovmuaj kev tswj xyuas network, nws yuav cuam tshuam rau lubhloovtam sim ntawd. Network tswj software.