1. Gahunda yo gutangiza BOB:
1. Gahunda yo gutangiza BOB ya HDV Phoelectron Technology LTD:
Nukugirango dusuzume imbaraga za optique hamwe namakarita yikarita yo kuzimangana kumpera zihererekanyabubasha, kandi uyakira akeneye guhinduranya ibyiyumvo byayo no gukurikirana RSSI.
Igipimo cyo gutangiza BOB:
| ikizamini | ibipimo | Ibisobanuro | igice | amagambo | |||
| imikorere | Ikiranga | ibisobanuro | Min. | Ubwoko. | Icyiza | ||
| Igice cyo gukemura | TxPower | Tx yohereza imbaraga | 1.2 | 1.5 | 1.8 | dBm | Kubipimo byihariye, indangagaciro irashobora gutezimbere ukurikije imikorere ya BOSA |
| Ikigereranyo | Ikigereranyo cyo kuzimangana | 9.5 | 12 | 14 | dB | ||
| Ijisho | igishushanyo cy'amaso | 45 | 50 | 55 | ％ | ||
| RxPoCalPoint_0 | Calibrasi ya Rx ibipimo byambere imiterere | -10 | -10 | -10 | dB | ||
| RxPoCalPoint_1 | Rx kalibrasi ya kabiri ibipimo byimiterere | -20 | -20 | -20 | dB | ||
| RxPoCalPoint_2 | Calibrasi ya Rx imiterere ya gatatu imiterere | -30 | -30 | -30 | dB | ||
| Igice cyo Kugerageza | TxPower | Tx yohereza imbaraga | 0.5 | 2.5 | 4 | dBm | Kubipimo byihariye, indangagaciro irashobora gutezimbere ukurikije imikorere ya BOSA |
| TxPo_DDM | Kohereza gukurikirana imbaraga za optique | 0.5 | 2.5 | 4 | dB | ||
| Imbaraga | Kohereza gukurikirana itandukaniro rya optique | -1 | 0 | 1 | ％ | ||
| Ikigereranyo | Ikigereranyo cyo kuzimya imyuka | 9 | 11 | 14 | dB | Kubipimo byihariye, indangagaciro irashobora gutezimbere ukurikije imikorere ya BOSA | |
| Ijisho | igishushanyo cy'amaso | 45 | 50 | 55 | dB | ||
| EyeMargin | Ijisho Igishushanyo Magin | 10 | 10 | 10 | dB | ||
| TxCurrent | imyuka ihumanya ikirere | 180 | |||||
| Igiteranyo | igezweho | 100 | 250 | 300 | |||
| Ibyiyumvo | ibyiyumvo | -27 | -27 | ||||
2. Igishushanyo cya BOB igishushanyo cya HDV Phoelectron Technology LTD.:
Igishushanyo mbonera cya BOB igishushanyo mbonera, ikizamini cyinzira imwe, guhuza ibintu bigoye hanze, attenuator, metero yamakosa, metero yimbaraga, CDR nibindi bikoresho bigomba kugurwa ukundi. Buri biro byakazi bisaba mudasobwa kugirango ishyigikire ikizamini.
1. Kumenyekanisha urukurikirane rwa ES-BOBT8 ibikoresho byo gupima BOB:
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3. Imikorere ya BERT ihuriweho hamwe na 2xSFP + yumucyo utanga urumuri, irashobora gushyigikira 1.25G ~ 10G optique yerekana ibimenyetso, kugirango itange urumuri rwerekana ibimenyetso kubizamini bya sensibilité ya BOB;
4. Kwishyira hamwe kwa CDR Gukurura, imbere-kwiyubaka-isaha yo kugarura ibimenyetso, irashobora gutanga ibimenyetso byisaha bisabwa mugupima amaso ya optique;
5. Imashini yonyine ya Calibibasi ya metero irashobora gutanga imbaraga za optique ya kalibrasi.
ES-BOBT8 ikurikirana rya sisitemu ya BOB itanga urutonde rwuzuye rwibikoresho byikizamini, bishobora gutanga imiyoboro ntarengwa ya 8 yaONUIkizamini cya BOB. Ikizamini cya BER nisoko yumucyo, attenuator, metero yingufu, kugabana uburebure bwumurongo, optique ihinduranya nibindi bikoresho byinjijwe mubikoresho bimwe, hamwe na software ya BOB yumwuga wo gukoresha ibizamini, irashobora gutanga igisubizo cyuzuye cyibisubizo bya BOB.
2 、Ihame ryo gukora ibyuma:
Uruhare rwa ES-BOBT8 yuruhererekane rwibikoresho bya BOB:
1.Mu nzira yo kubyara, reba nibaONUoptique port luminous power nibisanzwe mugihe nyacyo
2.Reba niba imbaraga za optique zakiriwe zasomwe naONUicyambu cya optique nukuri.
Ihame ryakazi rya sisitemu yibikoresho:
1.
2. bus.
3. Ikosa ryerekana biti chip VSC8228 yohereza ikimenyetso cyubwoko bwigipimo cyagenwe nigipimo ukurikije amabwiriza, kandi igatwara module ya OLT kugirango yohereze ibimenyetso bya optique yubwoko bwikigereranyo hamwe nigipimo binyuze muri interineti ya SerDES. Uburebure bwa OLT yoherejwe ni 1490nm, kandi urumuri rugabanyijemo umunani binyuze mu gucamo ibice. Nyuma yo kugenzura DAC igenzura VOA ihuza imbaraga zidasanzwe za optique, ihujwe naONUicyambu.ONUasoma imbaraga zijyanye na optique akayigereranya nagaciro nyako.
4. voltage yinjiza pin ya attenuator ya VOA, kugirango urumuri rutangwa na module ya PON OLT ihujwe nimbaraga zabigenewe, hanyuma igahuzwa Kuri optique ya port yaONU.
5. Uburyo bwa ADC bwo gushyira mubikorwa: Nyuma yumucyo utangwa naONUigaragazwa na PD (Photodetector), PD itanga ibimenyetso byerekana ibimenyetso byubunini butandukanye ukurikije imbaraga za signal optique, kandi bigahinduka mumashanyarazi hamwe numubare mugari kandi ugasobanuka neza binyuze muri logarithmic ihindura ADL5303. Agaciro kamenyekanye na AD5593 hanyuma gahindurwa mubimenyetso bya digitale binyuze muri bisi ya I2C unyuze muri SCM U1 (moderi C8051F340) hanyuma amaherezo yerekanwe kumurongo wa mudasobwa yakiriye.