A matsayin bayyanar gwaji na al'ada, na'urar sigtal da gaske tana nuna yanayin mara igiyar waya ta yankin gwajin. Ana amfani dashi a cikin CW (ci gaba) gwajin siginar, gwajin hanyar sadarwa, da kuma ingancin hanyar sadarwa don tsarin rarraba ɗakin.
Bari mu bincika sigogi na gama gari da ka'idodi na lokaci da rabo na dijital sipper don tsayar da binciken.
Mahimman sigogi na dijital masu daukar hoto na dijital, RBW (Bandwate Bandwidth) Saituna, saitunan girman saiti, da sauransu.
Ka'idar saitin RF na ciki shine:
(1) Lokacin da ya zama dole don bincika ƙananan sigina, ya kamata a saita darajar atentiation a matsayin ƙananan siginar hoto, in ba haka ba ana iya ganin siginar da aka bincika na na'urar daukar hoto kuma ba za a iya gani ba;
(2) A lokacin da ya zama dole a gano alamun ƙarfi, ƙimar etteniate ya kamata a saita shi da yawa, in ba haka ba zai haifar da alamun rashin daidaituwa, kuma suna nuna alamun arya, har ma sun lalata bayyanar;
Ka'idojin RBW sune:
(1) A lokacin da ya nemi ƙaramin ɗarara, Rbw ƙimar sannu-wuri, in ba haka ba za a bambance shi da amo da ganuwa ba a ganuwa; Amma idan ƙimar RBW ta yi ƙasa sosai, lokacin sharewar zai yi tsayi da ƙarfi kuma ikon gwajin zai shafa;
(2) A la'akari da cewa bandwidth na wani rb na rb na alamar GSM, sigina na PHS da TD-lte suna kusa da 200k, ana ba da shawarar a gaba ɗaya zuwa 200khz.
Matsakaicin girman girman mita shine:
(1) Ta hanyar hadin gwiwar tango, saita mitarancin mitar da Bandwidth don bincika yanayin shiga cikin Carrys, da F-Band TDS Cikin-Band TDS Cikin-Band TDS Cikin-Band A bu mai kyau a haɗa da mitarancin mitar da dacewa lokacin da mitar. Misali, an saita binciken F-Band scrambling zuwa 1880-1900mhhh. A lokacin da mitar, kowane tashar jiragen ruwa na erenna za a iya cire haɗin a Rru, haɗa tace, da kuma haɗa tashar fitarwa ta tace tare da na'urar daukar hoto.
(2) Shaɗa mitar mitar da ƙananan mitar mitar na mitar don bincika ko akwai wasu wurare daban-daban na sigina daban-daban akan ƙananan bangarorin. Misali, lokacin da aka bincika rudani na F-kide, zaku iya saita mai ban sha'awa sau 1805mhz-1920mhz, kuma bincika 1805-1920mhz daban. A cewar siginar da kuma tsanani na 1830mhz, 1830-1850mhz, 1800-1850mhz, 1800-1920mhz, 1800-1920mhz mitar DCS bisa ga bayar da taimakon ko na iya zama dics mai fada da kuma cikakken kutse;
Haɗawa yanayin shiga cikin banbancin cikin banbanci da kuma yanayin kutse da banbanci na sama da ƙananan abubuwa masu yawa a cikin matakai biyu na sama, yana yiwuwa a tsara sikeli da yawa a cikin rikitarwa da yawa inda aka sami nutsuwa da yawa.
Lokaci: Feb-06-021
