Kuv ntseeg tias ntau tus neeg muas zaub tau pom qhov TX / RX kho qhov muag hluav taws xob tsis zoo thaum mus yuav khoom kho qhov muag. Ob qhov kev txwv no yog ib qho ntawm cov tseem ceeb kom ntseeg tau qhov kev sib txuas lus ntawm cov khoos phis tawj tas mus li. Qhov twg TX yog kis lub zog kho qhov muag thiab Rx yog qhov tau txais lub zog kho qhov muag. Yog li koj ntau npaum li cas koj thiaj paub txog lub tshuab hluav taws xob kis tau thiab qhov muag tau txais lub zog? Dab tsi yog qhov ntau ntawm ob qho tib si? Yuav ua li cas los ntsuas lub zog ntawm cov txheej txheem kho qhov muag ntawm cov qauv khoos phis tawm nyob rau hauv ib txwm muaj?
Cov khoom sib kis / txais hluav taws xob zoo li cas? Dab tsi yog qhov ntau?
Cov khoom siv hluav taws xob kis tau hais txog kev tawm ntawm cov khoom siv hluav taws xob ntawm lub teeb hluav taws xob thaum lub teeb xa ntawm qhov kawg ntawm lub teeb tsa ntawm lub khoos phis tawm, thiab cov tau txais lub zog hluav taws xob yog hais txog kev nkag mus rau lub zog kho qhov muag ntawm lub teeb hluav taws xob thaum qhov kawg tau txais ntawm qhov kho qhov muag. Ob ntawm lawv nyob rau hauv dBm, thiab lawv yog ib qho ntawm cov tsis tseem ceeb cuam tshuam rau lub teeb liab kis nrug. Feem ntau, tsuas yog thaum lub hwj chim sib kis thiab tau txais lub zog ntawm qhov ntsuas hluav taws xob muaj nyob rau hauv qhov chaw siab thiab qib qis, tuaj yeem ua kom kis tau zoo ntawm qhov ntsuas hluav taws xob kho tau. Txawm li cas los xij, qhov sib txawv ntawm qhov ntev, qhov deb thiab qhov ntsuas ntawm qhov ntsuas hluav taws xob muaj qhov sib txawv ntawm kev sib kis thiab txais lub teeb ci. Piv txwv, kev sib kis ntawm cov khoom siv hluav taws xob thiab tau txais lub zog ntawm 500m SFP1G-SX-85 optical module (nruab nrab wavelength yog 850nm) yog - 9.5dBm ~ - 2.5dBm thiab - 17dBm ~ 0dBm feem; cov kis hloov kho lub zog thiab txais lub zog kho qhov muag ntawm 10km SFP1G-SX -31 optical module (nruab nrab wavelength yog 1310nm) yog - 9.5dBm ~ - 3dBm thiab - 20dBm ~ - 3.0dBm feem.
Cov tsis | Kev hloov mus deb | Qhov chaw ntawm yoj yoj | Hloov cov khoom siv fais fab tuag | Tau txais lub zog kho qhov muag |
1G SFP Optical module | 500m | 850nm | -9.5 dBm ~ -2.5 dBm | -17 .0dBm ~ 0 dBm |
10km | 1310nm | -9.5 dBm ~ -3.0 dBm | -20.0dBm ~ -3.0dBm | |
40km | 1310nm | -4.5 dBm ~ 3.0 dBm | -22.5dBm ~ -3.0dBm | |
40km | 1550nm | -4.0 dBm ~ 1.0 dBm | -21.0dBm ~ -3.0dBm | |
80km | 1550nm | -2.0 dBm ~ 5.0 dBm | -23.0dBm ~ -3.0dBm | |
100km | 1550nm | 0dBm ~ 5.0 dBm | -30.0dBm ~ -9.0dBm |
Li cas los kuaj ntsuas / txais lub zog kho qhov muag?
Yuav ntsuas li cas tias kev xa tawm thiab tau txais lub zog ntawm lub ntsuas hluav taws xob ntawm lub ntsuas hluav taws xob nyob rau hauv ib txwm?
Feem ntau hais lus, cov neeg siv khoom lag luam tuaj yeem ncaj qha soj ntsuam seb qhov kis tau thiab tau txais lub zog ntawm lub kho qhov muag ntawm lub ntsej muag yog qhov ib txwm dhau los ntawm DDM kev ua haujlwm (kev kuaj mob digital soj ntsuam muaj nuj nqi) ntawm optical module. Txawm li cas los xij, yog tias cov ntaub ntawv DDM ntawm lub kho qhov muag ntawm lub ntsej muag yog qhov txawv txav lossis tsis txhawb nqa lub luag haujlwm no, nws raug pom zoo tias koj ua ntej teeb meem kho qhov muag ntawm lub teeb tsa kho qhov muag, thiab tom qab ntawd daws cov teeb meem kom tau txais cov txiaj ntsig ntawm kis thiab tau txais lub zog kho qhov muag ntawm lub ntsej muag kho qhov muag. ,
Tsis tas li, koj tseem tuaj yeem siv lub ntsuas fais fab kho qhov muag kom tau txais cov nqi ntawm lub zog kho qhov muag tawm los ntawm qhov hloov kho hluav taws xob. Noj 10gbase-lr optical module ua piv txwv, cov kauj ruam xeem yog raws li hauv qab no:
1. Tso nrog 10gbase-lr optical module rau hauv SFP + chaw nres nkoj ntawm 10g hloov chaw;
2. Txuas lub ntsuas hluav taws xob rau lub ntsuas hluav taws xob kho qhov muag tau los ntawm lc-fc fiber jumper;
3. Nias tus yuam sij tig los ua lub zog hluav taws xob, nyem" λ" qhov tseem ceeb rau kev hloov kho txoj hlua rau txoj hlua txuas rau 10gbase-lr SFP + optical module (uas yog, kho cov kis rau 1310nm)
Vim li cas lub zog kho qhov muag ntawm qhov hluav taws xob kho qhov muag tsis zoo? Yuav daws tau nws li cas?
Thaum lub zog kho qhov muag ntawm lub teeb tsa hluav taws xob pom zoo li qhov tshwm sim tsis zoo, xws li lub teeb loj, lub teeb me me, tsis muaj teeb pom kev, lub zog tsis ruaj khov kho, me me sab hom kev sib piv, kev ua haujlwm ntawm lub khoos phis tawm ntawm cov kho qhov muag yuav poob, yog li cuam tshuam rau kev ua haujlwm thiab qhov deb ntawm teeb liab kis. Vim li cas cov xwm txheej tsis zoo no tshwm sim hauv lub zog kho qhov muag ntawm lub teeb tsa kho qhov muag? Feem ntau nws vim yog cov teeb meem kho vajtse ntawm qhov kho qhov muag hloov kho, xws li:
Kev ua tau zoo ntawm Tosa tsis zoo;
Lub backlight tam sim no tus pin (PD + tus pin) ntawm Tosa yog ua tsis ncaj;
Lub teeb liab pins (LD + tus pin thiab LD - tus pin) ntawm Tosa ntawm qhov kis tau tus mob yog muab cov lus tsis raug;
Cov chip tsis zoo tso lossis kev ua tau zoo ntawm tsav tsheb npav;
Cov khoom sib xyaw (xws li lub zog xws li lub zog, tiv taus, inductors lossis sib nqus hlaws dai) hauv qab lub cim xeeb nti pins ploj, tsis raug cai lossis tsis zoo txuas;
Lub zog ua haujlwm tsis sib xws.
HTF' s cov khoom lag luam zoo tau lees tias, thiab cov khoom siv siv tau yog txawv txawv.
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