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    Ukuqaliswa kwe-BOB yokulinganisa kwe-HDV Phoelectron Technology LTD

    Ixesha lokuposa: Apr-24-2022

    1. Inkqubo yokugunyaziswa kwe-BOB:

    1. Inkqubo yokugunyaziswa kwe-BOB ye-HDV Phoelectron Technology LTD:

    Ubukhulu becala kukulungisa i-optical power kunye ne-eye map extinction ratio yesiphelo sothumelo, kwaye umamkeli kufuneka alungelelanise ubuntununtunu kunye nokubeka iliso kwe-RSSI.

    Isalathisi sokugunyaziswa kwe-BOB:

    uvavanyo ipharamitha iinkcukacha iyunithi izimvo
     
    umsebenzi uphawu inkcazelo Min. Chwetheza. Max
    Debugging inxalenye TxPower Tx ukuthumela amandla 1.2 1.5 1.8 dBm Ngomlinganiselo othile, isalathisi sinokulungiswa ngokuhambelana nokusebenza kwe-BOSA
    I-ExtRatio umlinganiselo wokuphela 9.5 12 14 dB  
    Umnqamlezo wamehlo isiphambuka somzobo weliso 45 50 55  
    RxPoCalPoint_0 Ulungelelwaniso lwe-Rx yimeko yokuqala yepharamitha -10 -10 -10 dB  
    RxPoCalPoint_1 Rx ukulinganisa imeko yeparameter yesibini -20 -20 -20 dB  
    RxPoCalPoint_2 Ulungelelwaniso lwe-Rx yimeko yeparameter yesithathu -30 -30 -30 dB  
    Inxalenye yovavanyo TxPower Tx ukuthumela amandla 0.5 2.5 4 dBm Ngomlinganiselo othile, isalathisi sinokulungiswa ngokuhambelana nokusebenza kwe-BOSA
    TxPo_DDM Ukudlulisa esweni amandla optical 0.5 2.5 4 dB  
    DiffTxPower Ukudlulisa esweni umahluko wamandla okukhanya -1 0 1  
    I-ExtRatio I-Emission extinction ratio 9 11 14 dB Ngomlinganiselo othile, isalathisi sinokulungiswa ngokuhambelana nokusebenza kwe-BOSA
    Umnqamlezo wamehlo isiphambuka somzobo weliso 45 50 55 dB  
    I-EyeMargin Umzobo wamehlo uMagin 10 10 10 dB  
    TxCurrent ukukhutshwa kwangoku     180    
    IyonkeYangoku yangoku iyonke 100 250 300    
    Uvakalelo ubuntununtunu   -27 -27    

    2. Idiagram yoqhagamshelo lwe-BOB ye-HDV Phoelectron Technology LTD.:

    Umzobo oqhelekileyo wokuvavanya i-BOB, uvavanyo lwendlela enye, uxhulumaniso lwangaphandle oluyinkimbinkimbi, i-attenuator, imitha yephutha, imitha yamandla, i-CDR kunye nezinye izixhobo kufuneka zithengwe ngokwahlukileyo. Indawo nganye yokusebenzela ifuna ikhompyutha ukuxhasa uvavanyo.

    1. Ukuqaliswa kwe-ES-BOBT8 izixhobo zovavanyo lwe-BOB:
    2. Unokuxhasa ukuya kuthi ga kwi-8 iziteshi zovavanyo lwe-BOB, imitha yamandla edibeneyo yangaphakathi kunye ne-attenuator, inokugqiba ukuthumela kunye nokufumana ukulungiswa kunye nokuvavanya ngexesha elifanayo;
    3. Umsebenzi odibeneyo we-BERT kunye ne-2xSFP + i-interface yomthombo wokukhanya, unokuxhasa i-1.25G ~ 10G imveliso yesignali ye-optical, ukubonelela ngomthombo wokukhanya wesignali yokuvavanya ukuvalelwa kwe-BOB;
    4. I-CDR edibeneyo I-Trigger ngaphandle, ukubuyiswa kwesignali yewashi eyakhelwe ngaphakathi, inokubonelela ngesignali yewashi efunekayo kuvavanyo lwe-optical eye diagram;
    5. Imitha yokulinganisa amandla okuzimela ngokwawo inokubonelela ngomgangatho wokubona ulungelelwaniso lwamandla ombane.

    Inkqubo yovavanyo ye-ES-BOBT8 ye-BOB ibonelela ngeseti epheleleyo yezisombululo zezixhobo zovavanyo, ezinokubonelela ngobuninzi beendlela ezisi-8I-ONUUvavanyo lwe-BOB. Umhloli we-BER kunye nomthombo wokukhanya, i-attenuator, imitha yamandla, i-wavelength division, i-optical switch kunye nezinye izixhobo zihlanganiswe kwisixhobo esinye, kunye ne-software ye-BOB yokuhlola i-automation software, inokubonelela ngesethi epheleleyo yezisombululo zovavanyo lwe-BOB.

    5

    2,Umgaqo wokusebenza kweHardware:

    Indima ye-ES-BOBT8 yothotho lweenkqubo ze-BOB zehardware:

    1.Kwinkqubo yemveliso, khangela ukuba iI-ONUoptical port amandla akhanyayo aqhelekile ngexesha lokwenyani
    2.Jonga ukuba ixabiso lamandla okukhanya elifunyenweyo lifundwe yiI-ONUizibuko elibonakalayo lichanekile.

    Umgaqo osebenzayo wenkqubo yehardware:

    1. Isoftware yekhompyuter ephezulu kwinkqubo yokusebenza iqhagamshelwe kwi-interface ye-USB ye-SCM U1 (imodeli C8051F340) nge-interface ye-USB kwinkqubo yokuvavanya ukuqonda ukudityaniswa komatshini womntu;
    2. I-SCM U1 (imodeli C8051F340) ilawula i-U3 (i-bit error detector chip VSC8228, i-signal generator), imodyuli ye-OLT (PON SFP), i-ADC (iphunyezwe yi-ADL5303 kunye ne-AD5593), kunye ne-DAC (iphunyezwe ngu-MAX4230 kunye ne-AD55IC3) ibhasi.
    3. I-bit error detector chip VSC8228 ithumela isignali yodidi oluchaziweyo lwekhowudi kunye nereyithi ngokuhambelana nomyalelo, kwaye iqhuba imodyuli ye-OLT ukuthumela isignali ye-optical yohlobo lwekhowudi ehambelanayo kunye nereyithi ngokusebenzisa i-SerDES interface. Ubude be-OLT ethunyelwe ngaphandle yi-1490nm, kwaye ukukhanya kwahlulahlulwe kwisibhozo nge-splitter. Emva kokuba i-DAC yokulawula i-attenuator i-VOA igxininise kumandla okukhanya achaziweyo, ixhunyiweI-ONUizibuko elibonakalayo.I-ONUifunda amandla abonakalayo ahambelanayo kwaye ayithelekise nexabiso lokwenyani.
    4. Indlela yokuphunyezwa kweDAC: I-SCM U1 (imodeli C8051F340) ithumela idatha yeDAC kwi-AD5593 ngebhasi ye-I2C, i-port ye-I/O ye-AD5593 ivelisa umqondiso wombane, kwaye umqondiso wombane uveliswa nge-amplifier yokusebenza MAX4230, esetyenziswa kwi- iqhosha legalelo lombane we-VOA attenuator, ukuze ukukhanya okukhutshwe yi-PON OLT imodyuli kuncitshiswe kumandla okukhanya achaziweyo, kwaye emva koko kuqhagamshelwe kwizibuko le-optical port.I-ONU.
    5. Indlela yokuphunyezwa kwe-ADC: Emva kokukhanya okukhutshwe yi-I-ONUifunyenwe yi-PD (i-photodetector), i-PD ivelisa i-currents yesignali yobukhulu obuhlukeneyo ngokwamandla esignali ye-optical, kwaye iguqulwa ibe yi-voltage kunye noluhlu olubanzi lwamanani kunye nokuchaneka okuphezulu ngokusebenzisa i-logarithmic converter ADL5303. Ixabiso liqatshelwa ngu-AD5593 kwaye liguqulwa libe ngumqondiso wedijithali ngokusebenzisa ibhasi ye-I2C nge-SCM U1 (imodeli ye-C8051F340) kwaye ekugqibeleni iboniswe kwi-interface yekhompyutha yokusingatha.



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