Ka kakaretso, matla a khanyang a optical fiber transceiver kapa optical module ke a latelang: multimode e pakeng tsa 10db le -18db; mokhoa o le mong ke 20km pakeng tsa -8db le -15db; 'me mokhoa o le mong ke 60km o pakeng tsa -5db le -12db pakeng tsa. Empa haeba matla a khanyang a fiber optic transceiver a hlaha pakeng tsa -30db le -45db, joale ho ka etsahala hore ebe transceiver ena ea fiber optic e na le bothata.
Joang ho ahlola hore na ho na le bothata ka fiber optic transceiver?
(1) Ntlha ea pele, bona hore na leseli la optical fiber transceiver kapa optical module le leseli la pontšo ea li-port tse sothehileng li ntse li le teng.
a. Haeba letšoao la FX la transceiver le koetsoe, ka kopo netefatsa hore na khokahanyo ea fiber e hokahane? Qetello e le 'ngoe ea fiber jumper e hokahane ka ho bapisa; ntlha e 'ngoe e hokahane ka mokhoa oa sefapano.
b. Haeba letšoao la optical port (FX) la transceiver ea A le ntse le le teng 'me letšoao la optical port (FX) la B transceiver le tima, phoso e ka lehlakoreng la A transceiver: monyetla o mong ke: Transceiver (TX) optical transmission boema-kepe bo bobe hobane boema-kepe ba optical (RX) ba transceiver ea B ha bo fumane lets'oao la optical; monyetla o mong ke: ho na le bothata ka khokahanyo ena ea fiber ea koung ea phetiso ea optical ea A transceiver (TX) (thapo ea optical kapa jumper ea optical e ka robeha).
c. Pontšo ea li-twisted pair (TP) e timme. Ka kopo etsa bonnete ba hore khokahanyo e sothehileng e fosahetse kapa khokahanyo e fosahetse? Ka kopo sebelisa continuity tester ho etsa liteko (leha ho le joalo, mabone a sothehileng a li-transceivers a tlameha ho ema ho fihlela sehokelo sa fiber se hoketsoe).
d. Li-transceivers tse ling li na le likou tse peli tsa RJ45: (ToHUB) e bontša hore mohala o kopanyang hoswitjhake mola o otlolohileng; (ToNode) e bonts'a hore mohala o hokelang hoswitjhake crossover line.
e. Likarolo tse ling tsa moriri li na le MPRswitjhaka nqane: ho bolela hore mothapo wa kgokelo ho yaswitjhake mola o otlolohileng; DTEswitjha: mohala oa khokahanyo ho easwitjhake mokhoa oa ho tšela.
(2) Hore na thapo ea optical le optical fiber jumper li robehile
a. Khokahano ea thapo ea optical le ho lemoha ha ho khaoha: sebelisa lebone la laser, khanya ea letsatsi, 'mele o khanyang ho bonesa pheletsong e' ngoe ea sehokelo sa optical cable kapa coupling; bona haeba ho na le leseli le bonahalang pheletsong e ’ngoe? Haeba ho na le leseli le bonahalang, ho bontša hore mohala oa optical ha o robehe.
b. Ho lemoha ha u ntse u tima ho hokahanya ha fiber ea optical: sebelisa lebone la laser, khanya ea letsatsi, joalo-joalo ho khantša ntlha e le 'ngoe ea fiber jumper; bona haeba ho na le leseli le bonahalang ka lehlakoreng le leng? Haeba ho na le leseli le bonahalang, fiber jumper ha e robehe.
(3) Hore na halofo/full duplex mode e fosahetse
Li-transceiver tse ling li na le FDXli-switcheska lehlakoreng: duplex e felletseng; HDXli-switches: halofo ea duplex.
(4) Teko ka meter ea matla a optical
Matla a khanyang a optical fiber transceiver kapa optical module tlas'a maemo a tloaelehileng: mekhoa e mengata: pakeng tsa -10db le -18db; mokhoa o le mong lik'hilomithara tse 20: pakeng tsa -8db le -15db; mokhoa o le mong lik'hilomithara tse 60: pakeng tsa -5db le -12db; Haeba matla a khanyang a fiber optic transceiver a pakeng tsa -30db-45db, joale ho ka ahloloa hore ho na le bothata ka transceiver ena ea fiber optic.