Hauv siab -cov ntaub ntawv ceev ceev cabling, tib neeg feem ntau kho "MPO cable hom" zoo li nws tsuas yog ib feem ntawm -cov lus nug. Tab sis nyob rau hauv tiag tiag tej yaam num nws yog ib tug system kev txiav txim. Koj tab tom npaj plaub yam tib lub sijhawm: cable form factor, fiber ntau suav thiab hauv paus system, polarity mus kom ze, thiab pinning. Nco ib qho, thiab feem ntau koj yuav them rau nws hauv kev ua haujlwm rov ua haujlwm, poob qis, lossis poob ntxiv.
Tib neeg txhais li cas thaum lawv hais "MPO cable hom"
Cov pab pawg sib txawv siv "hom" txhais tau tias sib txawv, yog li nws tsim nyog tshem tawm ntxov.
Cov lus 1 - Qhov "hom" txhais tau li cas hauv MPO qhov project
| Dab tsi "hom" hais txog | Piv txwv | Yuav ua li cas yog nws tsis ncaj ncees lawm |
|---|---|---|
| Form factor | Lub cev, Breakout, Patch, Conversion | Cov txheej txheem tsis zoo, kev siv tsis zoo, kev sib cuam tshuam tsis zoo |
| Fiber suav thiab hauv paus system | 8, 12, 16, 24, 32 fibers; Base-8 vs Base-12 | Cov fibers khib nyiab, hloov pauv txawv txawv, xav tau kev hloov pauv tsis xav tau |
| Polarity | Hom A, Hom B, Hom C hauv ib txoj kev npaj | Tx/Rx mismatch and link down |
| Pinning | Pinned los yog unpinned | Tsis tuaj yeem ua phooj ywg zoo, teeb meem kev sib raug zoo, kev puas tsuaj |
Cov lus qhia ceev ceev los ntawm pab pawg Dimi: yog tias ib tus neeg hais tias "peb xav tau Hom B," nug ib qho ua raws- cov lus nug: "Koj puas txhais tau tias hom B hom polarity, lossis koj puas txhais tau tias cov qauv cable?" Ib qho kev qhia meej ntawd txuag tau ntau yam rov qab-thiab- tom qab.
Dimi cov neeg siv khoom Q&A - Case 14
Cov neeg siv khoom: Ua siab ncaj, qhov ntau peb nyeem, qhov tsis meej pem ntau peb tau txais. Txhua tsab xov xwm piav qhia A / B / C, tab sis thaum lub sijhawm yuav khoom, peb tseem tsis paub yuav xaj dab tsi.
Dimi: Qhov ntawd yog qhov qub vim tias ntau cov ntawv tso tseg ntawm cov ntsiab lus thiab tsis txhob qhia qhov kawg -rau - xaus kev tsim. Yog hais tias koj muab peb yam - koj topology, ntaus ntawv chaw nres nkoj pinning, thiab koj nyiam txoj kev los yog dab tsi koj ntsia puag siv - peb yuav kaw nws cia nrog ob outputs: daim ntawv qhia chaw thiab BOM. Tom qab ntawd pab neeg teb tsuas yog ua raws li cov ntaub ntawv es tsis txhob twv.
Plaub hom MPO cable form factor yam
Kuv yuav piav qhia txog txoj kev uas peb tuav lawv hauv kev sib tham tiag: nws yog dab tsi, dab tsi tib neeg feem ntau mess up, thiab koj yuav tsum txiav txim siab ua ntej xaj.
Lub cev: lub nraub qaum koj xav tau txoj cai ib zaug
Lub cev yog lub ntsiab ntau- fiber ntau txoj kev nrog MPO txuas ntawm ob qho kawg. Yog tias koj tab tom txuas cov panels rau panels lossis racks rau racks, lub cev feem ntau yog qhov chaw koj pib.
Dab tsi cov neeg tsis pom zoo yog ntev npaum li cas lub cev nyob hauv qhov chaw. Hloov kho tshiab, kho qhov muag hloov, chaw nres nkoj suav loj hlob. Ib lub cev uas tau npaj tsis zoo yuav kim heev rau "rov ua dua."
Table 2 - Cov kev xaiv ntawm lub cev yog qhov tseem ceeb
| Kev xaiv | Qhov koj txiav txim siab | Yuav ua li cas yog nws tsis meej |
|---|---|---|
| Fiber suav | Muaj peev xwm thiab sib dhos nrog optics | Wasted fibers los yog upgrade kev sib txhuam |
| Base system | Koj lub sijhawm ntev - ecosystem | Koj xav tau kev hloov dua siab tshiab tom qab, feem ntau nyob rau hauv siab |
| Polarity txoj kev thiab hom | End-to-end Tx/Rx correctness | Txuas uas tsis kam tuaj |
| Pinning | Seb cov connectors tuaj yeem ua khub | Cov khoom tsis raug, ncua sijhawm, qee zaum puas |
| Kev sau npe | Seb tib neeg puas muaj peev xwm tswj tau nws | Cov kev hloov pauv yav tom ntej dhau los ua kev kwv yees |
Dimi cov neeg siv khoom Q&A - Case 6
Cov neeg siv khoom: Peb tau txais MPO cassettes tab sis tsis tuaj yeem paub meej tias qhov chaw nres nkoj tom qab yog txiv neej lossis poj niam. Peb yuav tsum yuav lub cev dab tsi?
Dimi: Pib nrog txoj cai nyuaj. Pinned yuav tsum mate nrog unpinned. Nyob rau hauv ntau lub tsev lub cassette rear yog pinned, yog li ntawd lub cev kawg yuav tsum tau unpinned. Ua ntej koj txiav txim, paub meej tias lub cassette spec, sau pinned los yog unpinned kom meej meej nyob rau hauv lub BOM, thiab daim ntawv lo trunks nrog P1 / P2 ntxiv rau ib tug yooj yim daim ntawv qhia ID.
Dimi cov neeg siv khoom Q&A - Case 9
Cov neeg siv khoom: Cov ntaub ntawv hais tias "rov qab txuas txuas ntxiv." Puas yog qhov ntawd txhais tau tias peb yuav tsum siv cov xov hlau tsis muaj MPO?
Dimi: Yog, ntawm qhov kev sib txuas ntawd. Pinned yuav tsum mate nrog unpinned. Tom qab ntawd, kuj lees paub qhov kev taw qhia tseem ceeb thiab nws haum rau koj txoj kev npaj polarity li cas. Feem ntau "nws zoo li muaj tseeb tab sis tsis ua haujlwm" cov xwm txheej los ntawm cov ntsiab lus sib xyaw.
Dimi cov neeg siv khoom Q&A - Case 8
Cov neeg siv khoom: Peb yuav txhua yam raws li polarity. Tam sim no peb pom cov connectors yuav tsis ua phooj ywg. Peb nco dab tsi?
Dimi: Qhov ntawd yog qhov cuab yeej classic: tsom rau qhov polarity thiab tsis nco qab pinning. Polarity yog hais txog Tx / Rx mapping. Pinning yog hais txog kev kho lub cev. Ob leeg yuav tsum muaj tseeb. Hauv peb cov BOMs, peb ib txwm teev polarity thiab pinned los yog unpinned cais, yog li tsis muaj dab tsi tau saib xyuas.
MPO Breakout: nrawm yeej hnub no, tuaj yeem mob tag kis
Ib txoj kab sib txuas yuav siv ib qho MPO thiab cov kiv cua tawm mus rau ntau qhov chaw nres nkoj LC lossis rau ntau MPOs. Nws nrov vim nws xav tias ncaj nraim. Tab sis nws tseem tuaj yeem hloov lub txee huv rau hauv ib yam dab tsi tsis muaj leej twg xav kov.
Yog tias koj ib puag ncig me me thiab ruaj khov, kev tawg txhua qhov tuaj yeem ua tau zoo. Yog tias koj ib puag ncig hloov pauv, panels thiab cassettes feem ntau them rau lawv tus kheej vim lawv khaws cov txheej txheem modular thiab pab tau.
Table 3 - Breakout direct vs trunk plus cassette
| Mus cuag | Vim li cas tib neeg xaiv nws | Dab tsi nws tuaj yeem raug nqi tom qab |
|---|---|---|
| Breakout ncaj qha mus rau cov khoom siv | Tsawg qhov chaw, ceev nrooj | Kev hloov kho nyuaj dua, ntxhov routing ntawm nplai |
| Lub taub hau ntxiv cassette plus thaj | Txheem cov chaw nres nkoj, hloov yooj yim dua | Kev npaj ntau dua thiab ntau SKUs ua ntej |
Dimi cov neeg siv khoom Q&A - Case 3
Cov neeg siv khoom: Peb puas tuaj yeem hla cov vaj huam sib luag thiab tsuas yog siv cov khoom tawg kom txuag tau tus nqi thiab qhov chaw?
Dimi: Koj tuaj yeem-tab sis tsuas yog tias koj xav kom nws nyob twj ywm tsis hloov. Yog hais tias lub network yuav loj hlob los yog cov chaw nres nkoj yuav txav mus, peb feem ntau yog siv breakouts nyob rau hauv ib lub khib thiab khaws lub pob tw ntxiv rau cov pob txha khiav. Qhov ntawd tiv thaiv "nws ua haujlwm ib zaug thiab tam sim no tsis muaj leej twg xav kov nws" qhov xwm txheej.
Dimi cov neeg siv khoom Q&A - Case 12
Cov neeg siv khoom: Peb tab tom siv breakouts rau kiv cua MPO tawm rau LC. Peb yuav ua li cas thiaj tswj tau nws tsis yog hloov pauv mus rau ib qho -lub sijhawm "hack ib ntus"?
Dimi: Kho breakout zoo li lub cev tivthaiv, tsis yog kev cawmdim cable. Yam tsawg kawg nkaus: sau npe rau cov chaw nres nkoj fanout nrog txoj cai zoo ib yam, sau lub cev -mus rau -breakout mapping, thiab txheeb xyuas daim ntawv qhia thaum tau txais - tsis yog txuas ntxiv. Ua peb yam no, thiab kev tawm tsam tuaj yeem tswj tau zoo li cov txheej txheem tsim nyog.
MPO Patch cords: me me cables, loj txim
Patch cords xav tias tsis muaj teeb meem, tab sis lawv nyob qhov twg cov pab pawg yuam kev sib xyaw pinning, polarity assumption, thiab cassette orientation. Tias yog vim li cas koj thiaj li hnov cov neeg hais tias, "Lub cev raug kuaj zoo, tab sis qhov txuas yuav tsis tuaj."
Ib tus cwj pwm zoo yog kho cov hlua khi ua ib feem ntawm koj qhov kev tsim qauv, tsis yog ib yam dab tsi koj rub thaum kawg.
Dimi cov neeg siv khoom Q&A - Case 7
Cov neeg siv khoom: Peb siv optics nrog MPO ports. Peb puas yuav tau txiv neej lossis poj niam thaj cords?
Dimi: Tsis txhob twv. Paub meej tias tus transceiver pinning. Nyob rau hauv kev xyaum, yog hais tias tus ntaus ntawv interface yog pinned, koj siv ib tug unpinned thaj qaum rau mate. Muab qhov kev xav tau rau hauv BOM yog li kev yuav khoom tsis tas yuav txhais nws.
Dimi cov neeg siv khoom Q&A - Case 4
Cov neeg siv khoom: Peb tsuas yog xav tau 40G SR4 hauv chav server me me. Koj puas tuaj yeem qhia peb txoj hauv kev yooj yim tshaj plaws kom peb tsis txhob thab nws?
Dimi: Rau kev tsim me me, lub hom phiaj yog txo cov kev xaiv. Xaiv ib txoj kev npaj polarity zoo ib yam, xyuas kom lub cev, cov kab ntawv, thiab patching tag nrho raws li nws, thiab siv tau daim ntawv qhia ua ntej mus -nyob. SR4 nws tus kheej tsis nyuaj - dab tsi tau txais cov neeg yuav khoom uas tsis ua raws li cov cai tib yam.
MPO Conversion: qhov hloov kho qhov tseeb
Kev hloov dua siab tshiab tshwm sim vim kev sib koom tes hloov zuj zus. Tej zaum koj yuav muaj lub nraub qaum ua ib puag ncig ib puag ncig, thaum cov optics tshiab thawb koj mus rau lwm qhov.
Qhov no yog qhov uas Base-8 piv rau Base-12 dhau los ua kev txiav txim siab ua lag luam. Yog tias koj tsis npaj nws, koj feem ntau xaus rau kev hloov dua siab tshiab nyob rau hauv lub sij hawm siab, thiab daim ntawv qhia cov ntaub ntawv tau sloppy.
Dimi cov neeg siv khoom Q&A - Case 10
Cov neeg siv khoom: Peb muaj 12-fiber nruab hauv paus, tab sis cov kev sib txuas tshiab zoo li ua kom zoo dua nrog 8-fiber. Peb puas tuaj yeem sib xyaw ua ke, lossis peb puas xav tau kev hloov dua siab tshiab?
Dimi: Koj tuaj yeem hloov pauv, tab sis tsis txhob kho nws li "yog tias nws ntsaws rau hauv, nws zoo." Koj yuav tsum paub meej tias pes tsawg fibers daim ntawv thov siv tiag tiag thiab sau daim ntawv qhia. Qhov kev pheej hmoo tsis yog kev sib txuas nkaus xwb - nws poob kev tswj kev siv thiab chaw nres nkoj daim ntawv qhia. Peb feem ntau pom zoo kom muaj ib qho - nplooj phiaj npaj: cov ntu twg nyob 12, qhov twg 8 tau qhia, qhov twg yuav tsum tau hloov dua siab tshiab, thiab qhov kev lees paub qhov kev kuaj xyuas seb daim ntawv qhia.
Fiber suav thiab Base system: qhov twg tus nqi surprises tshwm
Fiber suav nrog hauv ntiaj teb tiag
Nov yog qhov koj pom ntau zaus.
Table 4 - Cov suav fiber ntau thiab lawv feem ntau txhais li cas
| Fiber suav | Qhov twg yog qhov ntau | Kev lag luam zais - tawm |
|---|---|---|
| 8 | Base-8 ecosystems thiab qee qhov kev npaj kho qhov muag | Feem ntau ua haujlwm tau zoo, tab sis yuav tsum ua kom haum rau koj cov architecture |
| 12 | Heev feem ntau ntsia puag | Ib qho yooj yim mus yuav, tab sis yuav tsav hloov dua siab tshiab hauv qee qhov kev hloov kho dua tshiab |
| 16 | Kev tsim txoj kab siab dua hauv qee qhov chaw | Muaj peev xwm ua kom yooj yim rau qee txoj hauv kev, nce kev npaj xav tau |
| 24 ib 32 | High density backbones | Yuav txo tau cov kab ntau lawm tab sis ua rau kom cov duab kos tsis yooj yim |
Dimi cov neeg siv khoom Q&A - Case 11
Cov neeg siv khoom: Peb twb muaj MPO-24 pob tw. Peb puas tuaj yeem ntsaws rau hauv MPO-8 lossis MPO-12 khoom ncaj qha?
Dimi: Feem ntau, tsis muaj. MPO-24 yog qhov sib txawv, tsis yog "qhov loj dua MPO-12." Yog tias koj twb muaj MPO-24 lawm, txoj hauv kev yog feem ntau yog siv cov qauv sib xws lossis kev hloov pauv hloov dua siab tshiab es tsis txhob sim yuam tus khub ncaj qha.
Base-8 vs Base-12: nug cov lus nug txhim kho ua ntej
Es tsis txhob "qhov twg zoo dua," nug "dab tsi ua rau kev hloov kho pheej yig dua rau peb."
Table 5 - Kev txiav txim saib ntawm Base-8 vs Base-12
| Koj qhov xwm txheej | Dab tsi feem ntau ua rau kev nkag siab | Vim li cas |
|---|---|---|
| Koj muaj ib tug loj ntsia Base-12 qaum | Khaws Base-12, ntxiv hloov dua siab tshiab rau qhov xav tau | Kev cuam tshuam qis tshaj plaws |
| Koj tab tom ntxiv ntau qhov sib txuas sib txuas uas siv qhov tseem ceeb | Base-8 kev npaj los yog ib lub tswv yim hloov dua siab tshiab | Kev sib raug zoo nrog cov fibers tau siv li cas |
| Koj xav tau cov haujlwm yooj yim tshaj plaws | Standardize ntawm ib lub hauv paus mus kom ze | Tsawg dua kev zam |
Dimi cov neeg siv khoom Q&A - Case 1
Cov neeg siv khoom: Peb siv MPO-24 pob tw thiab tam sim no qhov chaw nres nkoj yog qhov mob. Txoj hauv kev ruaj khov yog dab tsi?
Dimi: Yog tias kev ua haujlwm tseem ceeb, ua kom yooj yim daim ntawv qhia thiab cov khoom seem. Ntau pawg ua tau zoo dua nrog ob txoj hauv kev MPO-12 dua li ib qho MPO-24. Yog xav tau MPO-24, ntsuas phoo cov cai tswj xyuas thaum ntxov thiab daim ntawv lo ua nruj ua tsiv yog li kev daws teeb meem tsis yog qhov xav tau.
MPO Polarity: qhov twg txuas ntsiag to ua tsis tiav?
Cov teeb meem polarity tsis tshwm sim raws li daim ntawv ceeb toom zoo. Lawv tshwm sim raws li kev sib txuas uas saib lub cev muaj tseeb tab sis tsis tuaj txog.
Ib txoj cai yooj yim ua haujlwm tau zoo: txiav txim siab qhov kawg -rau- txoj kev kawg ua ntej, tom qab ntawd kho lub cev, lub tshuab luam ntawv, thiab thaj ua rau ib qho system, thiab txheeb xyuas daim ntawv qhia ua ntej mus- nyob.
Table 6 - Ib qho yooj yim 12-fiber mapping saib
| Hom polarity | Lub tswv yim yooj yim | Daim duab piv txwv |
|---|---|---|
| Hom A | Ncaj nraim | 1 rau 1, 2 rau 2 |
| Hom B | Rov qab tag nrho | 1-12, 2-11 ib |
| Hom C | Pairwise tig | 1, 2, 3, 4 |
Dimi cov neeg siv khoom Q&A - Case 2
Cov neeg siv khoom: Peb tau daig xaiv hom A / B / C. Peb yuav ua li cas?
Dimi: Tsis txhob pib ntawm Hom. Pib los ntawm koj qhov kawg - mus rau - txoj kev xaus thiab qhov koj lub cassette xav tau. Tom qab ntawd tsim ib daim ntawv qhia nrog P1 / P2 thiab siv tau nws. Qhov ntawd yog sai dua li debugging qhov txuas tom qab.
Dimi cov neeg siv khoom Q&A - Case 5
Cov neeg siv khoom: Qhov twg yuav tsum tau flip tshwm sim, nyob rau hauv lub cev, cassette, los yog thaj?
Dimi: Txhua tus tuaj yeem ua haujlwm. Qhov tseem ceeb yog xaiv ib lub tswv yim thiab ua kom nws zoo ib yam. Ua kom nws tshawb tau nrog daim ntawv qhia, cov ntawv sau, thiab cov ntawv xeem.
Dimi cov neeg siv khoom Q&A - Case 13
Cov neeg siv khoom: Peb tau hloov cov kev taw qhia tseem ceeb lossis cov hloov pauv ntawm qhov chaw sim kho polarity. Tam sim no nws tsis ruaj khov.
Dimi: Kev taw qhia tseem ceeb cuam tshuam rau kev siv thiab ua daim ntawv qhia. Ad-hoc swaps feem ntau rhuav tshem tus qauv tsim yav dhau los. Restore thiab paub meej tias tus thawj txoj kev thiab ntaus ntawv ua ntej. Yog tias xav tau kev hloov pauv, khaws lawv rov qab thiab rov- siv tau qhov kawg- rau -mapping kawg.
Dimi cov neeg siv khoom Q&A - Case 15
Cov Neeg Siv Khoom: Koj puas tuaj yeem piav qhia Hom A / B / C hauv ib kab lus? Peb xav muab nws tso rau hauv peb cov txheej txheem sab hauv.
Dimi: Yog lawm. Hom A yog ncaj nraim - dhau. Hom B yog tag nrho thim rov qab. Hom C yog pairwise tig. Ntxiv ib kab ntxiv rau hauv koj tus qauv: qhov kev xaiv raug tseem nyob ntawm koj txoj kev thiab koj cov cassettes ua dab tsi.
Pinning: tsis txhob cia lub cev tsis sib haum xeeb nres qhov project
Qhov no yuav tsum tau ceev faj heev.
Txiv neej txhais tau tias nws muaj kev sib tw pins. Poj niam txhais tias tsis yog. Pinned yuav tsum mate nrog unpinned.
Table 7 - Yuav sau pinning kom meej hauv BOM li cas
| Teb | Piv txwv | Vim li cas thiaj pab tau |
|---|---|---|
| Txuas | MPO-12 | Forces suav fiber ntau sib tham |
| Polarity | Hom B | Ua kom pom tseeb |
| Pinning | Unpinned ntawm ob qhov kawg | Tiv thaiv kom txhob yuam kev poj niam txiv neej |
| Poob qib | Kev poob qis | Aligns kev cia siab ua haujlwm |
| Kev sau npe | P1/P2 ntxiv rau daim npav ID | Ua kom muaj kev nyab xeeb |
Ib - nplooj ntawv xaiv cov haujlwm uas koj tuaj yeem siv tiag tiag
Table 8 - 7 cov kauj ruam uas tiv thaiv kev rov ua haujlwm dua
| Kauj ruam | Txiav txim siab | Tso zis |
|---|---|---|
| 1 | Topology | Daim duab txuas yooj yim |
| 2 | Form factor | Lub cev, breakout, thaj, conversion |
| 3 | Fiber suav thiab puag | Lub hauv paus mus kom ze thiab npaj rau yav tom ntej |
| 4 | Txoj kev polarity | Pab neeg txheem |
| 5 | Cov khoom siv combo | Lub taub hau ntxiv cov cassette ntxiv rau txoj cai patch |
| 6 | Pinning | Pinned thiab unpinned xav tau |
| 7 | Txais | Kuaj thiab daim ntawv lo pob |
Dimi cov neeg siv khoom Q&A - Case 5 ntxiv
Cov neeg siv khoom: Peb pab neeg tu xyuas hloov ntau zaus. Peb tsis xav sib cav txog cov cassette thiab lub cev txhua lub sijhawm.
Dimi: Txo cov kev xaiv hauv thaj teb. Standardize ib txoj kev, kaw lub cev thiab lub cassette txoj cai, thiab muab daim ntawv qhia kev thiab daim ntawv lo cov qauv kom cov kws kho mob ua kom ntseeg tau tias tsis muaj kev xav.
Kev teeb tsa thiab kev sim uas tiv thaiv kev xav tsis thoob
Table 9 - Ib qho yooj yim txais SOP
| Kev txiav txim | Kev ua | Vim li cas |
|---|---|---|
| 1 | Tshawb xyuas thiab ntxuav | Tsis txhob dag siab poob |
| 2 | Kev kuaj xyuas txuas ntxiv | Paub meej tias txhua txoj kev fiber ntau |
| 3 | Polarity daim ntawv qhia | Catch Tx/Rx mismatch ntxov |
| 4 | Insertion poob test | Pom zoo tiv thaiv cov peev nyiaj txuas |
| 5 | Sau npe thiab archive | Ua kom muaj kev hloov pauv yav tom ntej kom nyab xeeb |
Kev daws teeb meem: cov tsos mob, ua rau, kuaj thawj zaug
Table 10 - Phau ntawv qhia kev daws teeb meem ceev
| Cov tsos mob | Zoo li ua rau | Thawj daim tshev |
|---|---|---|
| Txuas mus | Pinning mismatch | Pinned rau unpinned |
| Txuas mus tom qab kev hloov pauv | Polarity mix-up | Daim ntawv qhia txog kev tsim |
| poob siab dhau lawm | qias neeg endfaces | Tshawb xyuas thiab ntxuav |
| Ua haujlwm hauv ib qho kev taw qhia nkaus xwb | Cassette orientation los yog thaj | Cassette kev taw qhia thiab thaj hom |
| Txhim kho qhov txuas txuas | Base mismatch | Hloov pauv txoj kev npaj thiab daim ntawv qhia |
FAQ
Q: Dab tsi yog hom MPO cable ntau tshaj plaws rau cov ntaub ntawv chaw cabling?
A: Plaub qhov koj yuav pom feem ntau yog MPO lub cev cables, MPO harness / breakout cables, MPO thaj qaum, thiab MPO hloov dua siab tshiab cables los yog hloov dua siab tshiab modules. Cov qauv tsim feem ntau siv lub cev ua lub nraub qaum, tom qab ntawd siv kev tawg lossis patching ntawm cov npoo, thiab hloov dua siab tshiab tsuas yog thaum lub hauv paus system lossis fiber ntau tsis kab.
Q: Qhov txawv ntawm MPO lub cev vs MPO hlua (breakout) vs MPO thaj qaum yog dab tsi?
A: Xav tias nws yog txoj haujlwm ua haujlwm: lub cev yog lub nraub qaum khiav ntawm cov vaj huam sib luag lossis cov racks, cov hlua khi / cov kiv cua tawg ib qho MPO rau hauv ntau qhov chaw nres nkoj LC rau cov khoom siv, thiab cov hlua txuas txuas luv luv hauv racks lossis nruab nrab ntawm lub vaj huam sib luag thiab cov khoom siv. Qhov yuam kev feem ntau yog kho cov hlua khi li "generic," txawm tias lawv tseem xav tau txoj cai polarity thiab pinning.
Q: "MPO polarity Hom A, Hom B, Hom C" txhais li cas?
A: Cov no yog peb hom MPO polarity siv los khaws Tx/Rx aligned end-to-end. Hom A yog ncaj nraim -los ntawm, Hom B yog tag nrho rov qab, thiab hom C flips khub. Qhov tseem ceeb yog qhov polarity tsuas yog ua haujlwm thaum lub pob tw, cassette/module, thiab patch cords ua raws tib qhov kawg - mus rau - txoj kev xaus.
Q: Yam twg MPO polarity feem ntau yog hom A lossis hom B?
A: Tsis muaj ib qho universal "feem ntau" vim nws nyob ntawm koj lub cassettes/modules thiab koj qhov kawg - mus rau -txoj kev polarity. Yog tias koj xav tau tsawg dua surprises, tsis txhob xaiv polarity los ntawm qhov chaw. Tsim ib daim ntawv qhia yooj yooj yim (P1/P2 plus Tx/Rx) thiab xaiv lub cev lub cev uas phim koj tus qauv cassette.
Q: Qhov txawv ntawm MPO Hom A / B / C thiab Txoj Kev A / B / C yog dab tsi?
A: Hom A / B / C feem ntau piav qhia yuav ua li cas lub pob tw cable maps fiber ntau txoj haujlwm. Txoj Kev A / B / C yog tag nrho cov txheej txheem zoo, suav nrog cov pob tw, cov khoom siv / cov khoom siv, thiab patching. Ib qhov project ua tsis tiav thaum sib txawv ntawm qhov system tau tsim los siv ntau txoj hauv kev.
Q: Kuv yuav ua li cas thiaj paub yog tias kuv xav tau ib tug txiv neej lossis poj niam MPO cable (pinned vs unpinned)?
A: Tsis txhob cia siab rau lo lus "txiv neej / poj niam" ib leeg. Hauv daim teb, qhov kev kuaj xyuas yooj yim tshaj plaws yog pins: pinned yuav tsum sib koom nrog unpinned. Hauv kev yuav khoom, sau "pinned" lossis "unpinned" kom meej meej rau txhua qhov kawg yog li tsis muaj leej twg yuav tsum twv.
Q: Puas yog txiv neej / poj niam tib yam li pinned / unpinned ntawm MPO connectors?
A: Nyob rau hauv feem ntau MPO cov ntsiab lus tib neeg siv lawv sib hloov, tab sis rau specs thiab BOMs koj yuav tsum tau meej: pinned / unpinned yog qhov clearest yuav tsum tau. Ib kab ntawd tiv thaiv qhov tsis ua haujlwm classic uas qhov chaw tuaj txog thiab lub cev yuav tsis ua phooj ywg.
Q: Kuv yuav xaiv li cas ntawm Base-8 thiab Base-12 MPO cabling?
A: Pib nrog koj lub hauv paus nruab thiab koj txoj kev txhim kho. Yog tias koj twb muaj lub pob txha loj Base-12, koj tuaj yeem khaws nws thiab siv kev hloov pauv qhov xav tau. Yog tias koj daim ntawv qhia taug kev hnyav ntawm qhov sib npaug ntawm optics thiab koj mob siab txog kev siv fiber ntau, npaj rau Base-8 kev sib raug zoo lossis kev hloov pauv zoo. Lub hom phiaj yog tsawg dua kev zam thiab kev ua haujlwm yooj yim dua.
Q: Puas tuaj yeem MPO-8 txuas rau MPO-12? Nws puas yuav ua haujlwm?
A: Qee lub sij hawm nws tuaj yeem txuas lub cev, tab sis "ua haujlwm" nyob ntawm daim ntawv thov, daim ntawv qhia, thiab cov fibers yog siv tiag tiag. Kho cov fiber ntau sib xyaws- suav tsim raws li kev hloov pauv, sau daim ntawv qhia, thiab txheeb xyuas qhov kawg-kom- xaus kev txuas ntxiv thiab polarity ua ntej mus- nyob.
Q: Puas tuaj yeem MPO-24 txuas rau MPO-12 lossis MPO-8 ncaj qha?
A: Feem ntau, tsis yog. MPO-24 yog txheej txheem sib txawv thiab feem ntau yuav tsum tau sib xws modules lossis ib txoj kev npaj hloov dua siab tshiab. Tsis txhob xav tias "ntau fibers txhais tau tias nws rov qab sib xws."
Q: Vim li cas kuv qhov txuas MPO zoo tab sis tseem tsis tuaj?
A: Peb qhov ua rau sab saum toj yog pinning mismatch, polarity mismatch, los yog cassette/module orientation teeb meem. Pib nrog tus phooj ywg lub cev (pinned rau unpinned), tom qab ntawd paub meej tias daim ntawv qhia kev tiv thaiv kev tsim, tom qab ntawd xyuas cov kev taw qhia cassette thiab keying.
Q: Kuv yuav tsum muab dab tsi rau hauv MPO cable BOM kom tsis txhob yuam kev?
A: Yam tsawg kawg nkaus: suav fiber ntau, lub hauv paus system, hom polarity, pinning rau txhua qhov kawg, poob qib, thiab txoj cai sau npe zoo li P1 / P2 ntxiv rau daim npav ID. Lub hom phiaj yog tias kev yuav khoom thiab cov neeg tsim khoom tuaj yeem ua raws li BOM yam tsis muaj "kev txhais" dab tsi.
Dimi cov neeg siv khoom Q&A - Case 13
Cov neeg siv khoom: Peb tab tom yuav MPO loopbacks thiab peb pom hom A / B / C xaiv. Puas yog loopbacks yeej muaj hom polarity?
Dimi: Nws suab khib, tab sis nws tseem yog daim ntawv qhia logic. Lub loopback txuas cov kab hauv ib txoj hauv kev rau kev sim. Ntau hom loopback tuaj yeem siv sib txawv hauv kev sib koom ua ke. Qhov kev xaiv yog nyob ntawm qhov kev xeem yuav tsum tau ua - tsis txhob xav tias loopbacks coj zoo li lub cev tsis tu ncua.
