Qaadaha indhaha ee FTTH (CT-2001C)
Dulmar
Alaabtani waa FTTH soo dhawaynta indhaha. Waxay qabataa helitaanka awoodda hoose ee indhaha iyo kontoroolka indhaha tignoolajiyada AGC si loo daboolo baahiyaha fiber-ilaa-guriga. Isticmaal ciyaar saddex-geesood ah gelinta indhaha, kontorool xasilloonida calaamadda iyada oo loo marayo AGC, oo leh WDM, 1100-1620nm CATV beddelka sawirka korontada iyo wax soo saarka RF barnaamijka TV-ga fiilada.
Alaabtu waxay leedahay sifooyinka qaab-dhismeedka is haysta, rakibid ku habboon iyo qiimo jaban. Waa badeecad ku habboon in la dhiso shabakadda TV-ga FTTH.
Muuqaal
> qolof caag ah oo tayadeedu sareyso oo leh qiime sare oo dab ah oo wanaagsan.
> Kanaalka RF buuxa GaAs wareegga cod-weyneeye hoose. Soo dhaweynta ugu yar ee calaamadaha dhijitaalka ah waa -18dBm, iyo soo dhaweynta ugu yar ee calaamadaha analoogga waa -15dBm.
> Xakamaynta AGC waa -2 ~ -14dBm, iyo wax soo saarku asal ahaan waxba kama beddelin. (AGC kala duwan ayaa loo habeyn karaa iyadoo loo eegayo isticmaale).
> Naqshadaynta isticmaalka tamarta hoose, iyadoo la adeegsanayo wax-ku-oolnimada sare ee tamarta beddelka si loo hubiyo kalsoonida sare iyo xasilloonida sare ee korontada. Isticmaalka awoodda mishiinka oo dhan ayaa ka yar 3W, oo leh wareegga ogaanshaha iftiinka.
> WDM-ku-dhismay, garwaaqso hal-gal fiber oo keliya (1100-1620nm)
> SC/APC iyo SC/UPC ama FC/APC xiriiriyaha indhaha, metric ama inch RF interface optional.
> Habka sahayda korontada ee 12V DC ee dekedda.
Tilmaamayaasha farsamada
| Nambarka taxanaha ah | mashruuc | Halbeegyada waxqabadka | ||
| Xuduudaha indhaha | ||||
| 1 | Nooca laser | Photodiode | ||
| 2 | Moodeelka Cod-weyneeye Korontada |
| MMIC | |
| 3 | galinta hirarka iftiinka iftiinka (nm) | 1100-1620nm | ||
| 4 | galinta awooda indhaha (dBm) | -18 ~ +2dB | ||
| 5 | Luminta milicsiga indhaha (dB) | ：55 | ||
| 6 | Qaab xiriiriyaha indhaha | SC/APC | ||
| Halbeegyada RF | ||||
| 1 | Qiyaasta soo noqnoqoshada soo noqnoqda RF (MHz) | 45-1002MHz | ||
| 2 | heerka wax soo saarka (dBmV) | ＞20 Deked kasta oo wax soo saar leh ( gelinta indhaha: -12 ~ -2 dBm) | ||
| 3 | flatness (dB) | ≤ ± 0.75 | ||
| 4 | Khasaaraha Soo Celinta (dB) | ≥14dB | ||
| 5 | Wax soo saarka RF impedance | 75Ω | ||
| 6 | Tirada dekedaha wax soo saarka | 1 & 2 | ||
| waxqabadka isku xirka | ||||
| 1 |
77 NTSC / 59 PAL kanaalka analogga ah | CNR≥50 dB (0 dBm gelinta iftiinka) | ||
| 2 |
| CNR≥49Db (-1 dBm gelinta iftiinka) | ||
| 3 |
| CNR≥48dB (-2 dBm gelinta iftiinka) | ||
| 4 |
| CSO ≥ 60 dB, CTB ≥ 60 dB | ||
| Tilmaamaha TV-ga Dijital ah | ||||
| 1 | MER (dB) | ≥31 | -15dBm gelida awoodda indhaha | |
| 2 | OMI (%) | 4.3 | ||
| 3 | BER (dB) | <1.0E-9 | ||
| kale | ||||
| 1 | danab (AC/V) | 100-240 | ||
| 2 | Korontada wax-soo-saarka (DC/V) | + 5V (FTTH galinta, wax soo saarka adabtarada) | ||
| 3 | Heerkulka shaqada | -0℃~+40℃ | ||
jaantuska jaantuska
Sawirka Alaabta
FAQ
Q1. Waa maxay FTTH aqbalaha indhaha?
A: FTTH Optical receiver waa qalab loo isticmaalo shabakadaha fiber-to-the-home (FTTH) si ay u helaan calaamadaha indhaha ee lagu kala qaado fiilooyinka indhaha oo loogu beddelo xog ama calaamado la isticmaali karo.
Q2. Sidee buu FTTH u shaqeeyaa qaataha indhaha?
J: Soo dhawaynta indhaha ee FTTH waxay qabataa soo dhawaynta indhaha oo hooseeya iyo tignoolajiyada xakamaynta tooska ah ee indhaha (AGC). Waxay aqbashaa gelinta indhaha ee saddex-ciyaar ah waxayna ilaalisaa xasilloonida calaamadaha iyada oo loo marayo AGC. Waxay u beddeshaa calaamadda CATV ee 1100-1620nm wax soo saarka RF korantada ee barnaamijka fiilooyinka.
Q3. Waa maxay faa'iidooyinka isticmaalka FTTH soo dhaweynta indhaha?
J: Faa'iidooyinka isticmaalka qalabka FTTH waxaa ka mid ah awoodda lagu taageerayo geynta fiber-to-the-guriga, kaas oo bixin kara internet xawaarihiisu sarreeyo, TV iyo adeegyo taleefan oo hal fiber ah. Waxay bixisaa isticmaalka tamarta hoose, soo dhaweynta calaamadaha deggan iyo beddelka sawir-qaadista waxtarka sare leh ee calaamadaha CATV.
Q4. FTTH ma qaadi kartaa mowjadaha dhaadheer ee kala duwan?
J: Haa, FTTH soo dhawaynayaasha indhaha ee leh awooda WDM (Wavelength Division Multiplexing) waxay xamili karaan mawjadaha dhaadheer ee kala duwan, badanaa inta u dhaxaysa 1100-1620nm, taas oo awood u siinaysa inay qabtaan calaamadaha CATV kala duwan ee lagu kala qaado fiilooyinka fiber optic.
Q5. Waa maxay muhiimada tignoolajiyada AGC ee soo dhawaynta indhaha ee FTTH?
A: Tiknoolajiyada Xakamaynta Gain-ka Tooska ah (AGC) ee FTTH aqbaleyaasha indhaha waxay xaqiijisaa xasilloonida calaamadda iyadoo la hagaajinayo awoodda gelinta indhaha si loo ilaaliyo heerka calaamadda joogtada ah. Tani waxay awood u siinaysaa gudbinta la isku halayn karo, aan kala go' lahayn ee calaamadaha CATV, hubinta waxqabadka ugu wanaagsan ee codsiyada-fiber-ka-guriga.
