Sida Muuqaalka Imtixaanka Waddada Caadiga ah, Sawirka Dijital ah ayaa runtii ka tarjumaya Deegaanka Wireless-ka ee Aagga Imtixaanka.Waxaa Loo Adeegsaday CW (Wave Continuous Wave) Tijaabada Calaamadaha, Tijaabinta Wadooyinka Hagaajinta Shabakadda, Iyo Hagaajinta Shabakadda Shaqada Nidaamyada Qaybinta Qolka.
Aan eegno Halbeegyada Guud iyo Mabaadi'da Waqtiga iyo Qaybta Sawirka Dijital ah si loo carqaladeeyo baaritaanka.
Halbeegyada Muhiimka ah ee Sawir-qaade Dijital ah waxa ka mid ah Dejinta Attenuator-ka Gudaha, RBW (Xalinta Bandwidth) Dejinta, Habaynta Cabbirka Xadka, iwm.
Mabda'a Dejinta Attenuator RF Gudaha waa:
(1) Marka ay lama huraan tahay in la raadiyo calaamado yaryar, qiimaha attenuation waa in loo dejiyaa sida ugu hooseeysa ee suurtogalka ah, haddii kale calaamada bartilmaameedka la raadiyay waxaa liqi doona dhawaaqa hoose ee iskaanka soo noqnoqda lamana arki karo;
(2) Marka ay lama huraan tahay in la ogaado calaamadaha xooggan, qiimaha attenuation waa in loo dejiyaa sida ugu sarreeya ee suurtogalka ah, haddii kale waxay keeni doontaa qallooc aan toos ahayn wareegga sawirka, muujiya calaamadaha beenta ah, iyo xitaa dhaawaca muuqaalka;
Mabaadi'da Dejinta RBW waa:
(1) Markaad Raadinayso Calaamadaha Cidhiidhiga ah ee Yaryar, Qiimaha RBW waa in loo dejiyaa sida ugu hooseeya ee suurtogalka ah, haddii kale calaamada bartilmaameedka raadinta waa la isku dari doonaa oo lama kala saari karo, oo xitaa waxaa lagu liqi doonaa qaylada scanner oo gebi ahaanba aan la arki karin;Laakin haddii uu qiimaha RBW aad u hooseeyo, wakhtiga xaaqiddu aad buu u dheeraan doonaa oo awooda tijaabada ayaa saamayn doonta;
(2) Iyadoo la tixgalinayo in Bandwidth ee Hal RB ee GSM Signal, PHS Signal iyo TD-LTE uu ku dhow yahay 200k, iyo guud ahaan awooda tijaabada, waxaa lagu talinayaa in RBW ee iskaanka la dhigo 200KHz.
Mabaadi'da Dejinta Cabbirka Xadka Soo noqnoqda waa:
(1) Iyada oo loo marayo Iskaashi Shaandheyn, Deji Miisaanka Bandhiga Joogtada ah ee Nidaamka LTE Cabirka Bandwidth Si aad u baadho Shuruudaha Faragelinta Gudaha-Band, sida F-Band TDS In-Band Faragelinta, Faragelinta Labaad ee GSM, iyo Faragelinta Dhexdhexaadinta DCS.Waxaa lagugula talinayaa in lagu xiro Shaandheeyaha Xadka Soo noqnoqda ee u dhigma marka la xaaqayo soo noqnoqoshada.Tusaale ahaan, Baaritaanka Xoojinta F-Band waxaa lagu dejiyay 1880-1900MHz.Marka la xaaqayo soo noqnoqoshada, deked kasta oo anteenada ah ayaa laga jari karaa RRU-da, isku xidhka shaandhada, iyo ku xidhida dekeda soo saarida shaandhada iyo iskaanka soo noqnoqda;
(2) Ka xaaq xadhkaha soo noqnoqda ee sare iyo hoose ee ku xiga ee kooxda soo noqnoqda bartilmaameedka si aad u baadho haddii ay jiraan shaqooyin kala duwan oo calaamad ah oo ku saabsan kooxo-hoosaadyada kala duwan.Tusaale ahaan, Marka la baadho faragelinta F-Band, waxaad dejin kartaa cabbirka xaaqidda soo noqnoqda ee cabbirka 1805MHz-1920MHz, oo aad si gooni ah u baadho 1805-1920MHz.Marka loo eego Signalka iyo xoojinta 1830MHz, 1830-1850MHz, 1850-1880MHz,iyo 1900-1920MHz Kooxaha Soo noqnoqda, Baaro Awoodda Calaamadda ee DCS iyadoo loo eegayo mowjadda faragelinta si ay u caawiso go'aaminta haddii ay jiri karto faragelin buuxda oo DCS
Isku darka Shuruudaha Faragelinta Gudaha iyo Shuruudaha Faragelinta Bannaanka ee Sare iyo Hoose ee ku dheggan labada tallaabo ee sare, waxaa suurtogal ah in lagu falanqeeyo culeysyada faragelinta ee kala duwan ee muuqaal fowdo ah oo faragelino badan ay ka sarreeyaan.
Waqtiga boostada: Febraayo-06-2021