I-ONU yilokho esivame ukukubiza ngokuthi “ikati elikhanyayo”, ukukhanya okuphansi kwe-ONU kubhekisela esimweni sokuthi amandla okukhanya atholwa yi-ONU angaphansi kokuzwela okwamukelayo kwe-ONU. Ukuzwela okwamukelayo kwe-ONU kubhekisela emandleni amancane okukhanya angatholwa yi-ONU ngesikhathi sokusebenza okuvamile. Ngokuvamile, inkomba yokuzwela okwamukelayo ye-broadband ONU yasekhaya ingu-27dBm; ngakho-ke, amandla okukhanya athola i-ONU angaphansi kuka-27dBm ngokuvamile achazwa njengokukhanya okubuthakathaka kwe-ONU.
I-ONU yilokho esivame ukukubiza ngokuthi “ikati elikhanyayo”, ukukhanya okuphansi kwe-ONU kubhekisela esimweni sokuthi amandla okukhanya atholwa yi-ONU angaphansi kokuzwela okwamukelayo kwe-ONU. Ukuzwela okwamukelayo kwe-ONU kubhekisela emandleni amancane okukhanya angatholwa yi-ONU ngesikhathi sokusebenza okuvamile. Ngokuvamile, inkomba yokuzwela okwamukelayo ye-broadband ONU yasekhaya ingu-27dBm; ngakho-ke, amandla okukhanya athola i-ONU angaphansi kuka-27dBm ngokuvamile achazwa njengokukhanya okubuthakathaka kwe-ONU.
Kunezici eziningi ezithinta ulwazi lomsebenzisi ku-inthanethi. Ukukhanya okuphansi kwe-ONU kuthinta kakhulu isivinini senethiwekhi. Ukuze kuhlolwe umthelela wokukhanya okubuthakathaka kwe-ONU esivinini senethiwekhi yomsebenzisi, uLaodingtou wakha imodeli yokuhlola elandelayo.
Xhuma i-attenuator elungisekayo kanye ne-PON optical power meter ngokulandelana phakathi kwekhebula lesikhumba kanye ne-ONU, ukuze i-PON optical power meter ingasetshenziswa ukukala amandla okukhanya atholiwe e-ONU (amandla okukhanya aphansi okuhlolwa). Umehluko phakathi kwamandla okukhanya atholiwe e-ONU cishe u-0.3dB (i-jumper yefayibha eyodwa ngaphandle kokuncipha kokuxhumeka okusebenzayo). Indawo yangempela yokuhlola inje.
Ngokulungisa ukuncishiswa kwe-attenuator elungisekayo, ukuncishiswa kwesixhumanisi se-ODN kungandiswa, futhi amandla okukhanya atholiwe e-ONU angashintshwa. Ushintsho lwesivinini senethiwekhi luhlolwa ngokuxhuma i-laptop ku-ONU ngekhebula lenethiwekhi. Le ndlela isetshenziselwa ukuhlola i-broadband engu-300M yaseLaodingtoujia, futhi imiphumela yokuhlolwa imi kanje.
Ukuzwela kwangempela kokwamukela kwama-ONU amaningi kungcono kunenkomba cishe ngo-1.0dB. Isibonelo, ama-ONU kulolu vivinyo asasebenza ngokujwayelekile lapho amandla okukhanya atholayo ephakeme kune--27.98dBm. Uma amandla okukhanya atholakele ephansi kune--27.98dBm, isivinini senethiwekhi ye-downlink sehla ngokushesha ngokuncipha kwamandla okukhanya atholakele, futhi sigcina isivinini senethiwekhi esiphansi kakhulu ngaphakathi kwebanga elithile lamandla okukhanya kuze kube yilapho inethiwekhi iphazamiseka ngokuphelele.
Isikhathi sokuthunyelwe: Mashi-21-2022