SR812ST Laba-geesood oo Fiber Optical ah oo laba-soo-saar ah oo Dibadda ah
Lambarka Moodeelka: SR812ST
Summada: Jilicsan
MOQ: 1
Waxqabadka AGC ee aadka u wanaagsan
Xakamaynta Microprocessor-ka, Bandhig Dijital ah
Habka SMT wuxuu hagaajiyaa Gudbinta Calaamadaha Sawirka Korontada
01
Sharaxaadda Badeecada
Dulmar Kooban
SR812ST(R) waa qaataha indhaha ee ugu dambeeyay ee heerka sare ah ee CATV network laba-soo-saar ah. Qalabka hore u sii xoojiya wuxuu qaataa GaAs MMIC oo buuxa, qalabka dambe ee sii kordhiya wuxuu qaataa module-ka GaAs. Naqshadeynta wareegga ee la hagaajiyay oo ay weheliso 10-ka sano ee khibradda naqshadeynta xirfadeed, waxay ka dhigaysaa qalabku inuu gaaro tusmooyinka waxqabadka wanaagsan. Xakamaynta microprocessor-ka, soo bandhigida dhijitaalka ah ee xuduudaha, iyo hagaajinta injineernimada ayaa si gaar ah u fudud. Waa qalabka ugu weyn ee lagu dhiso shabakadda CATV.
Astaamaha Waxqabadka
- Tuubada beddelka sawir-qaadista ee PIN-ka oo jawaab celin sare leh.
- Naqshadeynta wareegga ee la hagaajiyay, soo saarista habka SMT, iyo wadada calaamadda ee la hagaajiyay waxay ka dhigaan gudbinta calaamadaha sawir-qaadista mid siman.
- Chip gaar ah oo RF ah oo yareynaya, oo leh RF wanaagsan iyo isku dheelitirnaan toosan, saxnaan sare.
- Qalabka amplifier-ka GaAs, wax soo saar labanlaab ah oo awood leh, oo leh faa'iido sare iyo qallooc hoose.
- Qalabka xakamaynta ee Microcomputer-ka Keliya ee Chip-ka ah (SCM) oo shaqeynaya, LCD wuxuu soo bandhigayaa xuduudaha, ku habboonaanta iyo hawlgalka dareenka leh, iyo waxqabadka xasilloon.
- Waxqabadka AGC ee aadka u fiican, marka kala duwanaanshaha awoodda indhaha ee la gelinayo uu yahay －9～＋2dBm, heerka wax soo saarku isma beddelin, CTB iyo CSO-na asal ahaan isma beddelin.
- Isku-xirka isgaarsiinta xogta ee la keydiyay, wuxuu ku xirnaan karaa jawaab-bixiyaha maaraynta shabakadda fasalka Ⅱ, iyo marin u helidda nidaamka maaraynta shabakadda.
- Qiiqa soo celinta wuxuu dooran karaa qaabka qarxa si uu si weyn u yareeyo isku-dhafka buuqa una yareeyo lambarka qaataha qaybta hore.
Xaaladaha Tijaabada Isku xirka
Xuduudaha farsamo ee buug-gacmeedkan iyadoo la raacayo habka cabbiraadda ee GY/T 194-2003
1. Qaybta qaabilaadda indhaha ee hore: oo leh fiilada indhaha ee caadiga ah ee 10km, qalabka indhaha ee aan firfircoonayn, iyo gudbiyaha indhaha ee caadiga ah ayaa sameeyay isku xirka tijaabada. Deji calaamadda kanaalka TV-ga ee analogga ah ee 59 PAL-D oo ah kala duwanaansho 45/87MHz~550MHz iyadoo la raacayo khasaaraha isku xirka ee la cayimay. Gudbi calaamadda habaynta dhijitaalka ah ee kala duwan 550MHz~862/1003MHz, heerka calaamadda habaynta dhijitaalka ah (8 MHz bandwidth) waa 10dB ka hooseeya heerka side-ka calaamadda analogga. Marka awoodda indhaha ee soo gelinta ee qaataha indhaha ay tahay -2dBm, heerka wax soo saarka RF waa 108dBμV, oo leh janjeedh wax soo saar 9dB ah, cabbir C/CTB, C/CSO, iyo C/N.
2. Qaybta gudbinta indhaha ee gadaal u socota: Fidsanaanta isku xirka iyo kala duwanaanshaha firfircoon ee NPR waa tusmooyinka isku xirka kuwaas oo ka kooban gudbiye indhaha ah oo gadaal u socda iyo qaataha indhaha ee gadaal u socda.
Fiiro gaar ah: Marka heerka wax soo saarka ee la qiimeeyay uu yahay qaab-dhismeedka buuxa ee nidaamka iyo awoodda iftiinka ee la helayo ay tahay -2dBm, qalabku wuxuu buuxiyaa heerka wax soo saarka ugu badan ee tusmada isku xirka. Marka qaab-dhismeedka nidaamku uu yaraado (taasi waa, kanaallada gudbinta dhabta ah way yaraadaan), heerka wax soo saarka ee qalabka ayaa la kordhin doonaa.
Ogeysiis Saaxiibtinimo: Waxaa lagugula talinayaa inaad calaamadda RF u dejiso wax soo saarka janjeedhka 6 ~ 9dB ee codsiga injineernimada wax ku oolka ah si loo hagaajiyo tusmada aan toosanayn (hoosteeda) nidaamka fiilada.
| SR812ST Laba-geesood oo Fiber Optical ah oo laba-soo-saar ah oo Dibadda ah | |||||
| Shay | Cutubka | Halbeegyada Farsamada | |||
| Qaybta aqbalaadda indhaha ee hore | |||||
| Halbeegyada Indhaha | |||||
| Helitaanka Awooda Indhaha | dBm | -9 ~ +2 | |||
| Lumista Soo Celinta Indhaha | dB | >45 | |||
| Mowjadda Helitaanka Indhaha | nm | 1100 ~ 1600 | |||
| Nooca Xidhiidhiyaha Indhaha |
| FC/APC, SC/APC ama uu qeexay isticmaaluhu | |||
| Nooca Faybarka |
| Hab Keli ah | |||
| XiriirBandhigga | |||||
| C/N | dB | ≥ 51（-2dBm gelinta) | |||
| C/CTB | dB | ≥ 65 | Heerka Soo-saarka 108 dBμV 6dB oo dheelitiran | ||
| C/CSO | dB | ≥ 60 | |||
| Xuduudaha RF | |||||
| Kala duwanaanshaha Soo Noqnoqoshada | MHz | 45 ~862 | 45 ~ 1003 | ||
| Fidsanaan ku jirta Kooxda | dB | ±0.75 | ±0.75 | ||
| Heerka Wax Soo Saarka ee La Qiimeeyay | dBμV | ≥ 108 | ≥ 108 | ||
| Heerka Soo-saarka Ugu Badan | dBμV | ≥ 114 | ≥ 112 | ||
| Lumista Soo-celinta Wax-soo-saarka | dB | (45 ~550MHz）≥16/(550 ~1000MHz)≥14 | |||
| Impedance-ka Soo-saarka | Ω | 75 | 75 | ||
| Kala duwanaanshaha EQ ee Xakamaynta Elektarooniga ah | dB | 0~10 | 0~10 | ||
| Xakamaynta Elektarooniga ah ee ATT Range | dBμV | 0~20 | 0~20 | ||
| Soo Celinta AraggaEhowlgalkaPfarshaxan | |||||
| Halbeegyada Indhaha | |||||
| Mowjadda Gudbinta Indhaha | nm | 1310±10, 1550±10 ama uu qeexay isticmaaluhu | |||
| Awoodda Indhaha ee Soo Baxda | mW | 0.5, 1, 2 | |||
| Nooca Xidhiidhiyaha Indhaha |
| FC/APC, SC/APC ama uu qeexay isticmaaluhu | |||
| Xuduudaha RF | |||||
| Kala duwanaanshaha Soo Noqnoqoshada | MHz | 5 ~ 65 (ama uu qeexay isticmaaluhu) | |||
| Fidsanaan ku jirta Kooxda | dB | ±1 | |||
| Heerka Gelitaanka | dBμV | 72 ~ 85 | |||
| Impedance-ka Soo-saarka | Ω | 75 | |||
| Kala duwanaanshaha firfircoon ee NPR | dB | ≥15（NPR≥30 dB) Isticmaal laser-ka DFB | ≥10(NPR≥30 dB) Isticmaal laysarka FP | ||
| Waxqabadka Guud | |||||
| Danab Bixinta | V | A: AC (150 ~ 265) V; B: AC (35 ~ 90) V | |||
| Heerkulka Hawlgalka | ℃ | -40~60 | |||
| Heerkulka Kaydinta | ℃ | -40~65 | |||
| Qoyaanka Qaraabada ah | % | Ugu badnaan 95% biyo-baxa ma jiro | |||
| Isticmaalka | VA | ≤ 30 | |||
| Cabbirka | mm | 260(L) ╳ 200(W) ╳ 130(H) | |||
SR812ST Laba-geesoodka ah ee Dibadda 2-soo-saar Fiber Optical ah Warqadda Gaarka ah ee Qaadaha.pdf
