I-ONU yilokho esivame ukukubiza ngokuthi "ikati elikhanyayo", ukukhanya okuphansi kwe-ONU kubhekisela kwinto yokuthi amandla okubona atholwe yi-ONU angaphansi kokuzwela kokuthola kwe-ONU.Ukuzwela kokwamukela kwe-ONU kubhekisela emandleni amancane okubona i-ONU engawathola ngesikhathi sokusebenza okuvamile.Ngokuvamile, inkomba yokuzwela yokuthola ye-Broadband ONU yasekhaya ingu -27dBm;ngakho-ke, i-ONU ethola amandla okubona aphansi kune -27dBm ngokuvamile ichazwa njengokukhanya okubuthakathaka kwe-ONU.
I-ONU yilokho esivame ukukubiza ngokuthi "ikati elikhanyayo", ukukhanya okuphansi kwe-ONU kubhekisela kwinto yokuthi amandla okubona atholwe yi-ONU angaphansi kokuzwela kokuthola kwe-ONU.Ukuzwela kokwamukela kwe-ONU kubhekisela emandleni amancane okubona i-ONU engawathola ngesikhathi sokusebenza okuvamile.Ngokuvamile, inkomba yokuzwela yokuthola ye-Broadband ONU yasekhaya ingu -27dBm;ngakho-ke, i-ONU ethola amandla okubona aphansi kune -27dBm ngokuvamile ichazwa njengokukhanya okubuthakathaka kwe-ONU.
Kunezici eziningi ezithinta ukuzizwisa komsebenzisi ku-inthanethi.Ukukhanya okuphansi kwe-ONU kuthinta kakhulu isivinini senethiwekhi.Ukuze kuhlolwe umthelela wokukhanya okubuthakathaka kwe-ONU kusivinini senethiwekhi yomsebenzisi, i-Laodingtou yakhe imodeli yokuhlola elandelayo.
Xhuma i-attenuator elungisekayo kanye nemitha yamandla e-PON optical ochungechungeni phakathi kwekhebuli yesikhumba ne-ONU, ukuze imitha yamandla okukhanya ye-PON isetshenziselwe ukukala amandla okubona atholiwe e-ONU (amandla okubona angezansi okuhlola).Umehluko phakathi kwamandla optical atholiwe we-ONU cishe u-0.3dB (i-fiber jumper engu-1 isusa ukuncishiswa kokuxhumana okusebenzayo).Isizinda sokuhlola sangempela sinje.
Ngokulungisa ukuncishiswa kwe-attenuator eguquguqukayo, ukuncishiswa kwesixhumanisi se-ODN kungandiswa, futhi amandla optical atholiwe we-ONU angashintshwa.Ukushintsha isivinini senethiwekhi kuhlolwa ngokuxhuma ikhompuyutha ephathekayo ku-ONU ngentambo yenethiwekhi.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 kulokhu kuhlola asengasebenza ngokujwayelekile lapho amandla okubona awamukelayo engaphezulu kuka -27.98dBm.Lapho amandla optical atholiwe engaphansi kuka -27.98dBm, isivinini senethiwekhi ye-downlink sehla ngokushesha ngokuncipha kwamandla okukhanya atholiwe, futhi sigcina isivinini senethiwekhi esiphansi kakhulu ngaphakathi kobubanzi obuthile bamandla okukhanya kuze kube yilapho inethiwekhi iphazamiseka ngokuphelele.
Isikhathi sokuthumela: Mar-21-2022