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.
Isistimu yokuhlola yochungechunge lwe-ES-BOBT8 ye-BOB inikeza isethi ephelele yezisombululo zemishini yokuhlola, enganikeza umkhawulo wamashaneli angu-8 wokuhlolwa kwe-ONU BOB.Umhloli we-BER 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.
2,Isimiso sokusebenza kwezingxenyekazi zekhompuyutha:
Iqhaza lochungechunge lwe-ES-BOBT8 lwezinhlelo zehadiwe ze-BOB:
1.Enqubweni yokukhiqiza, hlola ukuthi amandla okukhanya we-ONU optical port ajwayelekile yini ngesikhathi sangempela
2.Hlola ukuthi ingabe inani lamandla okubona elitholiwe elifundwe imbobo yokubona ye-ONU linembile.
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.Ngemva kokuthi i-DAC control attenuator VOA inciphe emandleni okubona ashiwo, ixhunywe kumbobo yokubona ye-ONU.I-ONU ifunda 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 emandleni okukhanya ashiwo, bese kuxhunywa embobeni yokubona ye-ONU.
5. Indlela yokusebenzisa i-ADC: Ngemva kokuba ukukhanya okukhishwa yi-ONU kutholwe yi-PD (photodetector), i-PD ikhiqiza amaza esignali amasayizi ahlukene ngokuvumelana namandla esignali ye-optical, futhi iguqulwa ibe i-voltage enobubanzi bezinombolo ezibanzi. nokunemba okuphezulu ngesiguquli 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.