1. BOB commissioning txheej txheem:
1. BOB commissioning txheej txheem ntawm HDV Phoelectron Technology LTD:
Nws yog qhov tseem ceeb rau kev debug lub hwj chim kho qhov muag thiab qhov muag daim ntawv qhia kev ploj tuag ntawm qhov kawg ntawm kev xa xov, thiab tus txais yuav tsum tau ntsuas nws qhov kev xav tau thiab kev saib xyuas RSSI.
BOB commissioning index:
| xeem | parameter | specifications | chav tsev | lus hais | |||
| muaj nuj nqi | tus cwj pwm | piav qhia | Min. | Ntaus. | Max | ||
| Debugging ib feem | TxPower | Tx transmitting zog | 1.2 | 1.5 | 1.8 | dBm ib | Rau qhov kev ntsuas tshwj xeeb, qhov Performance index tuaj yeem ua kom zoo raws li BOSA kev ua tau zoo |
| ExtRatio | extinction ratio | 9.5 ib | 12 | 14 | dB | ||
| EyeCross | qhov muag daim duab kev sib tshuam | 45 | 50 | 55 | % | ||
| RxPoCalPoint_0 | Rx calibration thawj qhov xwm txheej | -10 | -10 | -10 | dB | ||
| RxPoCalPoint_1 | Rx calibration thib ob parameter mob | -20 | -20 | -20 | dB | ||
| RxPoCalPoint_2 | Lub Rx calibration qhov thib peb parameter mob | -30 | -30 | -30 | dB | ||
| Kev xeem ib feem | TxPower | Tx transmitting zog | 0.5 | 2.5 | 4 | dBm ib | Rau qhov kev ntsuas tshwj xeeb, qhov Performance index tuaj yeem ua kom zoo raws li BOSA kev ua tau zoo |
| TxPo_DDM | Transmitting saib xyuas lub zog kho qhov muag | 0.5 | 2.5 | 4 | dB | ||
| DiffTxPower | Transmitting saib xyuas qhov sib txawv ntawm lub zog hluav taws xob | -1 | 0 | 1 | % | ||
| ExtRatio | Emission extinction ratio | 9 | 11 | 14 | dB | Rau qhov kev ntsuas tshwj xeeb, qhov Performance index tuaj yeem ua kom zoo raws li BOSA kev ua tau zoo | |
| EyeCross | qhov muag daim duab kev sib tshuam | 45 | 50 | 55 | dB | ||
| EyeMargin | Qhov muag Diagram Magin | 10 | 10 | 10 | dB | ||
| TxCurrent | emission tam sim no | 180 | |||||
| TotalCurrent | tag nrho tam sim no | 100 | 250 | 300 | |||
| rhiab heev | rhiab heev | -27 | -27 | ||||
2. BOB kev sib txuas daim duab ntawm HDV Phoelectron Technology LTD.:
Daim duab qhia kev sib txuas ntawm BOB, ib txoj kev sim, kev sib txuas sab nraud, lub attenuator, ntsuas qhov yuam kev, lub ntsuas hluav taws xob, CDR thiab lwm yam khoom siv yuav tsum tau yuav nyias. Txhua qhov chaw ua haujlwm yuav tsum muaj lub computer los txhawb qhov kev xeem.
1. Taw qhia ntawm ES-BOBT8 series BOB cov khoom siv kuaj:
2. tuaj yeem txhawb nqa mus txog 8 txoj hauv kev rau BOB xeem, Internal integrated fais fab meter thiab attenuator, tuaj yeem ua tiav qhov kev xa thiab txais kev debugging thiab kuaj tib lub sijhawm;
3. Integrated BERT muaj nuj nqi thiab 2xSFP + lub teeb qhov chaw interface, tuaj yeem txhawb 1.25G ~ 10G optical teeb liab tso zis, los muab cov teeb liab teeb liab rau BOB rhiab heev kuaj;
4. Integrated CDR Trigger tawm, sab hauv nws tus kheej-tsim moos teeb liab rov qab, tuaj yeem muab lub moos teeb liab xav tau rau kev kuaj qhov muag kho qhov muag;
5. Self-muaj calibration fais fab meter tuaj yeem muab cov qauv ntsuas hluav taws xob kho qhov muag pom.
ES-BOBT8 series BOB xeem system muab cov txheej txheem ua tiav ntawm cov cuab yeej ntsuas kev daws teeb meem, uas tuaj yeem muab qhov siab tshaj plaws ntawm 8 txoj hauv kev.ONUBOB test. BER tester thiab lub teeb ci, attenuator, fais fab ntsuas, wavelength faib, hloov kho qhov muag thiab lwm yam khoom siv tau muab tso rau hauv ib lub cuab yeej, nrog cov kws tshaj lij BOB xeem automation software, tuaj yeem muab cov txheej txheem BOB xeem daws teeb meem.
2,Hardware ua hauj lwm hauv paus ntsiab lus:
Lub luag haujlwm ntawm ES-BOBT8 series ntawm BOB hardware systems:
1.Nyob rau hauv cov txheej txheem ntau lawm, xyuas seb lubONUoptical chaw nres nkoj luminous hwj chim yog ib txwm nyob rau ntawm lub sij hawm
2.Kuaj seb puas tau txais cov nqi hluav taws xob kho qhov muag nyeem los ntawmONUoptical chaw nres nkoj yog qhov tseeb.
Ua hauj lwm hauv paus ntsiab lus ntawm hardware system:
1. Lub khoos phis tawj sab saud hauv kev ua haujlwm yog txuas nrog USB interface ntawm SCM U1 (qauv C8051F340) los ntawm USB interface hauv qhov kev sim kom paub txog kev sib txuas ntawm tib neeg-tshuab;
2. SCM U1 ( qauv C8051F340) tswj U3 (ntsis yuam kev ntes nti VSC8228, teeb liab generator), OLT module (PON SFP), ADC (ua los ntawm ADL5303 thiab AD5593), thiab DAC (ua los ntawm MAX4230 thiab AD5) los ntawm AD5 tsheb npav.
3. Qhov me ntsis yuam kev ntes nti VSC8228 xa tawm lub teeb liab ntawm cov cai teev hom thiab tus nqi raws li cov lus qhia, thiab tsav lub OLT module xa tawm cov teeb liab kho qhov muag ntawm cov hom code thiab tus nqi los ntawm SerDES interface. Lub wavelength ntawm OLT xa tawm yog 1490nm, thiab lub teeb muab faib ua yim los ntawm lub splitter. Tom qab DAC tswj attenuator VOA attenuates rau lub zog kho qhov muag teev, nws txuas nrog rauONUoptical chaw nres nkoj.ONUnyeem cov khoom siv kho qhov muag sib xws thiab muab piv nrog tus nqi tiag tiag.
4. DAC kev siv tshuab: SCM U1 ( qauv C8051F340) xa DAC cov ntaub ntawv mus rau AD5593 los ntawm I2C tsheb npav, I / O chaw nres nkoj ntawm AD5593 tsim hluav taws xob teeb liab, thiab lub teeb liab voltage yog tsim los ntawm kev ua haujlwm amplifier MAX4230, uas yog siv rau lub voltage input tus pin ntawm VOA attenuator, kom lub teeb emission los ntawm PON OLT module yog attenuated mus rau lub zog kho qhov muag teev, thiab ces txuas mus rau qhov chaw nres nkoj optical ntawm lubONU.
5. ADC kev siv tshuab: Tom qab lub teeb emitted los ntawm lubONUkuaj pom los ntawm PD (photodetector), PD tsim cov teeb liab tam sim no ntawm ntau qhov sib txawv raws li lub zog ntawm cov teeb liab kho qhov muag, thiab hloov mus rau hauv qhov hluav taws xob nrog cov lej dav dua thiab siab dua los ntawm logarithmic converter ADL5303. Tus nqi raug lees paub los ntawm AD5593 thiab hloov mus rau hauv cov teeb liab digital los ntawm I2C tsheb npav los ntawm SCM U1 (tus qauv C8051F340) thiab thaum kawg nthuav tawm ntawm tus tswv tsev computer interface.