FTTH yakira neza (CT-2001C)
Incamake
Iki gicuruzwa ni FTTH yakira neza. Ifata imbaraga nkeya optique yakira hamwe na optique igenzura tekinoroji ya AGC kugirango ihuze ibikenewe bya fibre-murugo. Koresha inshuro eshatu gukina optique yinjiza, kugenzura ibimenyetso bihamye binyuze muri AGC, hamwe na WDM, 1100-1620nm CATV yerekana ifoto yerekana amashanyarazi hamwe na progaramu ya tereviziyo ya RF isohoka.
Igicuruzwa gifite ibiranga imiterere yoroheje, kwishyiriraho byoroshye nigiciro gito. Nibicuruzwa byiza byubaka insinga ya TV FTTH umuyoboro.
Ikiranga
> Igikonoshwa cyiza cyane cya plastike hamwe numuriro mwiza wo hejuru.
> Umuyoboro wa RF wuzuye GaAs urusaku ruke amplifier umuzunguruko. Kwakira byibuze ibimenyetso bya digitale ni -18dBm, naho kwakira byibuze ibimenyetso bisa ni -15dBm.
> AGC igenzura urwego ni -2 ~ -14dBm, kandi ibisohoka ntabwo byahindutse. (Urutonde rwa AGC rushobora gutegurwa ukurikije umukoresha).
> Igishushanyo mbonera cyo gukoresha amashanyarazi make, ukoresheje uburyo bunoze bwo guhinduranya amashanyarazi kugirango wizere neza kandi uhamye kumashanyarazi. Imbaraga zikoreshwa mumashini yose ntiziri munsi ya 3W, hamwe numuzingi wo kumenya urumuri.
> Yubatswe muri WDM, menya porogaramu imwe ya fibre (1100-1620nm).
> SC / APC na SC / UPC cyangwa FC / APC ihuza optique, metric cyangwa santimetero RF interineti itabishaka.
> Uburyo bwo gutanga amashanyarazi ya 12V DC yinjira.
Ibipimo bya tekiniki
| Inomero y'uruhererekane | umushinga | Ibipimo by'imikorere | ||
| Ibipimo byiza | ||||
| 1 | Ubwoko bwa Laser | Photodiode | ||
| 2 | Imbaraga zongera imbaraga |
| MMIC | |
| 3 | kwinjiza urumuri rurerure (nm) | 1100-1620nm | ||
| 4 | kwinjiza imbaraga za optique (dBm) | -18 ~ + 2dB | ||
| 5 | Igihombo cyiza cyo gutekereza （dB） | ＞ 55 | ||
| 6 | Ifishi ihuza neza | SC / APC | ||
| Ibipimo bya RF | ||||
| 1 | RF isohoka inshuro (MHz) | 45-1002MHz | ||
| 2 | urwego rusohoka (dBmV) | ＞ 20 Buri cyambu gisohoka (optique yinjiza: -12 ~ -2 dBm) | ||
| 3 | uburinganire （dB） | ≤ ± 0.75 | ||
| 4 | Garuka Igihombo （dB） | ≥14dB | ||
| 5 | RF isohoka | 75Ω | ||
| 6 | Umubare w'ibyambu bisohoka | 1 ＆ 2 | ||
| guhuza imikorere | ||||
| 1 |
77 NTSC / 59 PAL imiyoboro | CNR≥50 dB (0 dBm yinjiza urumuri) | ||
| 2 |
| CNR≥49Db (-1 dBm yinjiza urumuri) | ||
| 3 |
| CNR≥48dB (-2 dBm yinjiza urumuri) | ||
| 4 |
| CSO ≥ 60 dB, CTB ≥ 60 dB | ||
| Ibiranga TV bya Digital | ||||
| 1 | MER (dB) | ≥31 | -15dBm yinjiza imbaraga za optique | |
| 2 | OMI （%） | 4.3 | ||
| 3 | BER (dB) | <1.0E-9 | ||
| ikindi | ||||
| 1 | voltage （AC / V） | 100 ～ 240 (Kwinjiza adapt) | ||
| 2 | Injira ya voltage （DC / V） | + 5V (FTTH yinjiza, ibisohoka adapt) | ||
| 3 | Ubushyuhe bwo gukora | -0 ℃ ~ + 40 ℃ | ||
Igishushanyo mbonera
Igicuruzwa
Ibibazo
Q1. Niki FTTH yakira?
Igisubizo: FTTH optique yakira ni igikoresho gikoreshwa mumiyoboro ya fibre-murugo (FTTH) kugirango yakire ibimenyetso bya optique byanyujijwe mumigozi ya optique hanyuma ubihindure mumibare cyangwa ibimenyetso byifashishwa.
Q2. Nigute FTTH optique yakira ikora?
Igisubizo: FTTH optique yakira ikoresha imbaraga nke za optique yakira hamwe na optique yunguka igenzura (AGC). Yemera inshuro eshatu-gukina optique yinjiza kandi ikomeza ibimenyetso bihamye binyuze muri AGC. Ihindura ikimenyetso cya 1100-1620nm CATV kumashanyarazi ya RF isohoka mumashanyarazi.
Q3. Ni izihe nyungu zo gukoresha FTTH optique yakira?
Igisubizo: Ibyiza byo gukoresha FTTH optique yakira harimo ubushobozi bwo gushyigikira fibre-yoherejwe murugo, ishobora gutanga serivisi yihuta ya interineti, TV na terefone hejuru ya fibre imwe. Itanga ingufu nke, kwakira ibimenyetso bihamye no guhinduranya ifoto yumuriro mwinshi kubimenyetso bya CATV.
Q4. Ese FTTH optique yakira ishobora gufata uburebure butandukanye?
Igisubizo: Yego, FTTH optique yakira ifite ubushobozi bwa WDM (Wavelength Division Multiplexing) irashobora gukora uburebure butandukanye bwumuraba, mubisanzwe hagati ya 1100-1620nm, ibafasha gukora ibimenyetso bitandukanye bya CATV byanyujijwe mumigozi ya fibre optique.
Q5. Ni ubuhe butumwa bw'ikoranabuhanga rya AGC muri FTTH optique yakira?
Igisubizo: Automatic Gain Control (AGC) tekinoroji muri FTTH optique yakira itanga ibimenyetso bihamye muguhindura optique yinjiza kugirango igumane urwego rwibimenyetso. Ibi bifasha kwizerwa, kudahagarika kwanduza ibimenyetso bya CATV, byemeza imikorere myiza ya fibre-kuri-murugo.
