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    Malingaliro a kampani HDV Phoelectron Technology LTD

    Nthawi yotumiza: Apr-24-2022

    1. Kutumiza kwa BOB:

    1. BOB kutumiza ndondomeko ya HDV Phoelectron Technology LTD:

    Ndiko kukonzanso mphamvu ya kuwala ndi chiŵerengero cha kutha kwa mapu a diso la mapeto otumizira, ndipo wolandirayo amayenera kuwongolera kukhudzika kwake ndi kuwunika kwa RSSI.

    BOB commissioning index:

    mayeso parameter mfundo unit ndemanga
     
    ntchito khalidwe kufotokoza Min. Lembani. Max
    Debugging gawo TxPower Tx mphamvu yotumizira 1.2 1.5 1.8 dBm Pakuyezera kwina, indexyo imatha kukonzedwa molingana ndi momwe BOSA imagwirira ntchito
    ExtRatio chiŵerengero cha kutha 9.5 12 14 dB  
    EyeCross mphambano ya chithunzi cha maso 45 50 55  
    RxPoCalPoint_0 The Rx calibration woyamba parameter chikhalidwe -10 -10 -10 dB  
    RxPoCalPoint_1 Rx calibration gawo lachiwiri la parameter -20 -20 -20 dB  
    RxPoCalPoint_2 The Rx calibration wachitatu parameter chikhalidwe -30 -30 -30 dB  
    Kuyesa gawo TxPower Tx mphamvu yotumizira 0.5 2.5 4 dBm Pakuyezera kwina, indexyo imatha kukonzedwa molingana ndi momwe BOSA imagwirira ntchito
    TxPo_DDM Kutumiza kuyan'anila mphamvu ya kuwala 0.5 2.5 4 dB  
    DiffTxPower Kutumiza kuyan'anila kusiyana kwa mphamvu ya kuwala -1 0 1  
    ExtRatio Emission extinction ratio 9 11 14 dB Pakuyezera kwina, indexyo imatha kukonzedwa molingana ndi momwe BOSA imagwirira ntchito
    EyeCross mphambano ya chithunzi cha maso 45 50 55 dB  
    EyeMargin Chithunzi cha Eye Magin 10 10 10 dB  
    TxCurrent emission current     180    
    TotalCurrent zonse zapano 100 250 300    
    Kumverera kumva   -27 -27    

    2. Chithunzi cholumikizira cha BOB cha HDV Phoelectron Technology LTD.:

    Chithunzi cholumikizira cholumikizira cha BOB, kuyesa kwa njira imodzi, kulumikizana kwakunja kovutirapo, chowongolera, mita yolakwika, mita yamagetsi, CDR ndi zida zina ziyenera kugulidwa padera. Malo aliwonse ogwirira ntchito amafunikira kompyuta kuti ithandizire mayesowo.

    1. Kuyambitsa zida zoyesera za ES-BOBT8 mndandanda wa BOB:
    2. Ikhoza kuthandizira mpaka 8 njira zoyesera za BOB, Internal Integrated mphamvu mita ndi attenuator, akhoza kumaliza kutumiza ndi kulandira debugging ndi kuyesa nthawi yomweyo;
    3. Ntchito yophatikizika ya BERT ndi 2xSFP + yowunikira kuwala, ikhoza kuthandizira 1.25G ~ 10G optical signal output, kuti apereke gwero la kuwala kwa chizindikiro cha BOB sensitivity test;
    4. Integrated CDR Trigger out, mkati mwawokha wodzipangira wotchi yobwezeretsa chizindikiro, ikhoza kupereka chizindikiro cha wotchi yofunikira poyesa chithunzi cha diso;
    5. Meta yamagetsi yodziyimira yokha imatha kupereka kuzindikira kwamphamvu kwamagetsi.

    ES-BOBT8 mndandanda wa BOB test system imapereka mayankho athunthu a zida zoyesera, zomwe zimatha kupereka njira zopitilira 8 zaONUBOB mayeso. Woyesa BER ndi gwero lowala, attenuator, mita yamagetsi, gawo la kutalika kwa mawonekedwe, optical switch ndi zida zina zimaphatikizidwa mu chipangizo chimodzi, ndi pulogalamu yaukadaulo ya BOB test automation, imatha kupereka mayankho athunthu a mayeso a BOB.

    5

    2,Mfundo yogwiritsira ntchito hardware:

    Udindo wa ES-BOBT8 mndandanda wamakina a BOB hardware:

    1.Mukupanga, fufuzani ngatiONUOptical port mphamvu yowala ndiyabwinobwino munthawi yeniyeni
    2.Check ngati mphamvu ya kuwala yolandiridwa yowerengedwa ndiONUOptical port ndi yolondola.

    Mfundo yogwira ntchito ya hardware system:

    1. Mapulogalamu apamwamba apakompyuta mu makina ogwiritsira ntchito amalumikizidwa ndi mawonekedwe a USB a SCM U1 (chitsanzo C8051F340) kudzera mu mawonekedwe a USB mu dongosolo loyesera kuti azindikire kulumikizana kwa makina a munthu;
    2. SCM U1 (model C8051F340) imayendetsa U3 (bit error detector chip VSC8228, jenereta ya chizindikiro), gawo la OLT (PON SFP), ADC (yoyendetsedwa ndi ADL5303 ndi AD5593), ndi DAC (yoyendetsedwa ndi MAX4230 ndi AD5593) basi.
    3. Chojambulira cholakwika pang'ono chip VSC8228 chimatumiza chizindikiro cha mtundu wamtundu wotchulidwa ndi mlingo malinga ndi malangizo, ndikuyendetsa gawo la OLT kutumiza chizindikiro cha kuwala kwa mtundu wofanana wa code ndi mlingo kupyolera mu mawonekedwe a SerDES. Kutalika kwa mawonekedwe a OLT omwe atumizidwa ndi 1490nm, ndipo kuwala kumagawidwa m'magawo asanu ndi atatu kupyolera mu splitter. Pambuyo pa DAC control attenuator VOA imachepetsa mphamvu yamagetsi yodziwika, imalumikizidwa ndiONUdoko la kuwala.ONUamawerenga mphamvu yofananira ya kuwala ndikuiyerekeza ndi mtengo weniweni.
    4. Njira yogwiritsira ntchito DAC: SCM U1 (model C8051F340) imatumiza deta ya DAC ku AD5593 kudzera mu basi ya I2C, doko la I/O la AD5593 limapanga chizindikiro chamagetsi, ndipo chizindikiro chamagetsi chimapangidwa kudzera pa amplifier MAX4230, yomwe imagwiritsidwa ntchito voteji yolowetsa pini ya VOA attenuator, kotero kuti kuwala komwe kumatulutsidwa ndi gawo la PON OLT kumachepetsedwa ndi mphamvu yowunikira, ndiyeno kulumikizidwa ndi doko la kuwala.ONU.
    5. Njira yogwiritsira ntchito ADC: Pambuyo pa kuwala kotulutsidwa ndiONUimazindikiridwa ndi PD (photodetector), PD imapanga mafunde a siginecha amitundu yosiyanasiyana molingana ndi mphamvu ya siginecha ya kuwala, ndipo imasinthidwa kukhala voteji yokhala ndi manambala ochulukirapo komanso kulondola kwambiri kudzera pakusintha kwa logarithmic ADL5303. Mtengowu umadziwika ndi AD5593 ndikusinthidwa kukhala chizindikiro cha digito kudzera mu basi ya I2C kudzera mu SCM U1 (chitsanzo C8051F340) ndipo pamapeto pake imawonetsedwa pamakompyuta apakompyuta.



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