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    Ukulinganisa kwenkampani HDV Phoelectron Technology LTD

    Isikhathi sokuthumela: Apr-24-2022

    1. Inqubo yokugunyazwa kwe-BOB:

    1. Inqubo yokugunyazwa kwe-BOB ye-HDV Phoelectron Technology LTD:

    Ikakhulukazi ukulungisa iphutha lamandla okubona kanye nesilinganiso sokuqedwa kwemephu yeso yesiphetho sokudlulisa, futhi umamukeli udinga ukulinganisa ukuzwela kwawo kanye nokuqapha kwe-RSSI.

    I-BOB commissioning index:

    test ipharamitha imininingwane iyunithi amazwi
     
    umsebenzi isici incazelo Okuncane. Thayipha. Ubukhulu
    Ingxenye yokususa iphutha I-TxPower Tx amandla okudlulisa 1.2 1.5 1.8 dBm Ukuze uthole isilinganiso esithile, inkomba ingenziwa elungiselelwe ngokuya ngokusebenza kwe-BOSA
    I-ExtRatio isilinganiso sokuqothulwa 9.5 12 14 dB  
    I-EyeCross ukuphambana komdwebo weso 45 50 55  
    RxPoCalPoint_0 Ukulinganisa kwe-Rx isimo sepharamitha yokuqala -10 -10 -10 dB  
    I-RxPoCalPoint_1 Ukulinganisa kwe-Rx isimo sepharamitha yesibili -20 -20 -20 dB  
    I-RxPoCalPoint_2 Ukulinganisa kwe-Rx isimo sepharamitha yesithathu -30 -30 -30 dB  
    Ingxenye yokuhlola I-TxPower Tx amandla okudlulisa 0.5 2.5 4 dBm Ukuze uthole isilinganiso esithile, inkomba ingenziwa elungiselelwe ngokuya ngokusebenza kwe-BOSA
    TxPo_DDM Ukudlulisa ukuqapha amandla optical 0.5 2.5 4 dB  
    I-DiffTxPower Ukudlulisa umehluko wamandla okukhanya okuqapha -1 0 1  
    I-ExtRatio Isilinganiso sokushabalala kwe-Emission 9 11 14 dB Ukuze uthole isilinganiso esithile, inkomba ingenziwa elungiselelwe ngokuya ngokusebenza kwe-BOSA
    I-EyeCross ukuphambana komdwebo weso 45 50 55 dB  
    I-EyeMargin I-Eye Diagram Magin 10 10 10 dB  
    TxCurrent emission current     180    
    IngqikithiYamanje isamba samanje 100 250 300    
    Ukuzwela ukuzwela   -27 -27    

    2. Umdwebo wokuxhuma we-BOB we-HDV Phoelectron Technology LTD.:

    Umdwebo ojwayelekile wokuxhumana wokuhlolwa kwe-BOB, ukuhlolwa kwendlela eyodwa, uxhumano lwangaphandle oluyinkimbinkimbi, i-attenuator, imitha yephutha, imitha yamandla, i-CDR nezinye izinto zokusebenza zidinga ukuthengwa ngokuhlukana. Indawo yokusebenza ngayinye idinga ikhompuyutha ukuze isekele ukuhlolwa.

    1. Ukwethulwa kwemishini yokuhlola ye-ES-BOBT8 yochungechunge lwe-BOB:
    2. Ingakwazi ukusekela iziteshi ezifika kweziyisi-8 zokuhlolwa kwe-BOB, imitha yamandla edidiyelwe yangaphakathi kanye ne-attenuator, ingaqedela ukuthumela nokwamukela ukulungisa iphutha nokuhlola ngesikhathi esifanayo;
    3. Umsebenzi ohlanganisiwe we-BERT kanye ne-2xSFP + isixhumi esibonakalayo somthombo wokukhanya, ungasekela i-1.25G ~ 10G okukhipha isignali ye-optical, ukunikeza umthombo wokukhanya wesignali wokuhlolwa kokuzwela kwe-BOB;
    4. I-CDR Edidiyelwe I-Trigger out, ukutholwa kwesignali yewashi ezakhelwe ngaphakathi, inganikeza isignali yewashi edingekayo ekuhlolweni komdwebo weso lokubona;
    5. Imitha yamandla okulinganisa oziqukathise inganikeza ukutholwa kokulinganisa amandla okukhanya okujwayelekile.

    Uhlelo lokuhlola lwe-ES-BOBT8 uchungechunge lwe-BOB luhlinzeka ngesethi ephelele yezixazululo zemishini yokuhlola, enganikeza ubuningi beziteshi eziyi-8I-ONUUkuhlolwa kwe-BOB. Umhloli we-BER kanye nomthombo wokukhanya, i-attenuator, imitha yamandla, i-wavelength division, i-optical switch kanye nezinye izinto zokusebenza zihlanganiswe kudivayisi eyodwa, nge-software ye-BOB yokuhlola ezenzakalelayo yobuchwepheshe, inganikeza isethi ephelele yezixazululo zokuhlola ze-BOB.

    5

    2,Isimiso sokusebenza kwezingxenyekazi zekhompuyutha:

    Iqhaza lochungechunge lwe-ES-BOBT8 lwezinhlelo zehadiwe ze-BOB:

    1.Enqubweni yokukhiqiza, hlola ukuthi ngabe i-I-ONUi-optical port amandla akhanyayo ajwayelekile ngesikhathi sangempela
    2.Hlola ukuthi ingabe inani lamandla okubona elitholiwe elifundwe yi-I-ONUi-optical port inembile.

    Umgomo wokusebenza wesistimu yehadiwe:

    1. Isofthiwe yekhompuyutha ephezulu ohlelweni lokusebenza ixhunywe kusixhumi esibonakalayo se-USB ye-SCM U1 (imodeli C8051F340) ngesixhumi esibonakalayo se-USB ohlelweni lokuhlola ukuze kubonakale ukuxhumana komshini womuntu;
    2. I-SCM U1 (imodeli C8051F340) ilawula i-U3 (i-chip yesitshina sephutha elincane i-VSC8228, ijeneretha yesiginali), imojula ye-OLT (PON SFP), i-ADC (isetshenziswa yi-ADL5303 ne-AD5593), kanye ne-DAC (isetshenziswa yi-MAX4230 kanye ne-AD5593) ibhasi.
    3. I-chip ye-bit error detector i-VSC8228 ithumela isignali yohlobo lwekhodi olushiwo kanye nezinga ngokuvumelana nomyalelo, futhi ishayela imojula ye-OLT ukuthumela isignali yokubona yohlobo lwekhodi ehambisanayo kanye nesilinganiso ngokusebenzisa isixhumi esibonakalayo se-SerDES. Ubude begagasi be-OLT ethunyelwe bungu-1490nm, futhi ukukhanya kuhlukaniswe kwaba yisishiyagalombili ngesihlukanisi. Ngemuva kokuthi i-DAC control attenuator VOA inciphe amandla optical ashiwo, ixhunywe ku-I-ONUimbobo yokubona.I-ONUifunda amandla okubona ahambisanayo futhi iwaqhathanise nenani langempela.
    4. Indlela yokusebenzisa i-DAC: I-SCM U1 (imodeli C8051F340) ithumela idatha ye-DAC ku-AD5593 ngebhasi le-I2C, imbobo ye-I/O ye-AD5593 ikhiqiza isignali kagesi, futhi isignali kagesi ikhiqizwa nge-amplifier yokusebenza engu-MAX4230, esetshenziswa ku- Iphinikhodi yokufaka i-voltage ye-VOA attenuator, ukuze ukukhanya okukhishwa imojula ye-PON OLT kuncishiswe kumandla okukhanya ashiwo, bese kuxhunywa embobeni yokubona ye-OLT.I-ONU.
    5. Indlela yokusebenzisa i-ADC: Ngemva kokukhanya okukhishwa yi-I-ONUitholwa yi-PD (i-photodetector), i-PD ikhiqiza amaza esignali anosayizi abahlukene ngokuvumelana namandla esignali ye-optical, futhi iguqulwa ibe i-voltage enobubanzi bezinombolo ezibanzi nokunemba okuphezulu ngokusebenzisa isiguquli se-logarithmic ADL5303. Inani libonwa yi-AD5593 futhi liguqulelwe libe isignali yedijithali ngebhasi le-I2C nge-SCM U1 (imodeli C8051F340) futhi ekugcineni yethulwe kusixhumi esibonakalayo sekhompyutha.



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