Tomas Chlebek Txij li thaum tsawg kawg yog hnub antennagate ntawm iPhone 4, qhov tseeb ntawm lub teeb pom kev zoo hauv lub xov tooj ntawm tes tau yog ib lub ntsiab lus ntawm kev sib tham. Cov neeg uas tsis ntseeg qhov khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob
Lub teeb liab lub zog yog ib txwm ntsuas hauv decibel-milliwatts (dBm). Qhov no txhais tau hais tias chav tsev no qhia txog qhov sib piv ntawm tus nqi ntsuas thiab ib milliwatt (1 mW), uas qhia txog lub zog ntawm lub teeb liab tau txais. Yog tias lub zog no siab dua 1 mW, tus nqi hauv dBm yog qhov zoo, yog tias lub zog qis dua, ces tus nqi hauv dBm yog qhov tsis zoo.
Nyob rau hauv cov ntaub ntawv ntawm ib tug mobile network teeb liab nrog smartphones, lub hwj chim yog ib txwm qis dua thiab tus naj npawb nyob rau hauv lub dBm unit yog li ntawd preceded los ntawm ib tug tsis zoo kos npe rau.
Ntawm ib qho iPhone, qhov yooj yim tshaj plaws los saib tus nqi no yog raws li hauv qab no:
- Ntaus *3001#12345#* hauv daim teb hu (Xov tooj -> Dialer) thiab nyem lub pob ntsuab kom pib hu. Cov kauj ruam no yuav muab lub cuab yeej tso rau hauv Field Test hom (siv los ntawm lub neej ntawd thaum ua haujlwm).
- Thaum lub Field Test screen tshwm, nias thiab tuav lub khawm pw kom txog thaum lub vijtsam kaw tshwm. Tsis txhob tua lub xov tooj (yog tias koj ua, tsis muaj dab tsi phem yuav tshwm sim, tab sis koj yuav tau rov ua cov txheej txheem).
- Nias thiab tuav lub desktop khawm kom txog thaum lub desktop tshwm. Tom qab ntawd, nyob rau hauv lub ces kaum sab laug ntawm cov zaub, es tsis txhob ntawm lub voj voog classic, tus lej tus nqi ntawm lub teeb liab lub zog hauv dBm tuaj yeem pom. Los ntawm txhaj rau ntawm qhov chaw no, nws muaj peev xwm hloov pauv ntawm cov khoom siv classic thiab cov zaub ntawm tus lej tus nqi.
Yog tias koj xav hloov rov qab mus rau cov duab classic ntawm lub teeb liab lub zog dua, rov ua cov kauj ruam 1 thiab tom qab Field Test screen tshwm, tsuas yog luv luv nias lub desktop khawm.
Tus nqi hauv dBm yog, raws li tau piav qhia saum toj no, xyaum ua ib txwm tsis zoo rau cov khoom siv txawb, thiab qhov ze ntawm tus lej yog xoom (uas yog, nws muaj tus nqi siab dua, suav nrog cov cim tsis zoo), lub teeb liab muaj zog dua. Txawm hais tias cov lej tso tawm los ntawm lub xov tooj smartphone tsis tuaj yeem tso siab rau tag nrho, lawv muab qhov qhia tseeb ntau dua li qhov yooj yim graphical sawv cev ntawm lub teeb liab. Qhov no yog vim tsis muaj kev lees paub tias nws ua haujlwm li cas thiab, piv txwv li, txawm tias muaj peb lub nplhaib tag nrho, kev hu xov tooj tuaj yeem tso tawm, thiab ntawm qhov tsis sib xws, txawm tias ib tus tuaj yeem txhais tau tias muaj teeb meem txaus hauv kev xyaum.
Nyob rau hauv cov ntaub ntawv ntawm dBm qhov tseem ceeb, cov lej siab dua -50 (-49 thiab siab dua) yog qhov tsawg heev thiab yuav tsum feem ntau qhia qhov sib thooj rau lub transmitter. Cov naj npawb ntawm -50 txog -70 tseem siab heev thiab tsim nyog rau lub teeb liab zoo heev. Qhov nruab nrab thiab feem ntau lub teeb liab lub zog sib haum mus rau -80 rau -85 dBm. Yog tias tus nqi nyob ib puag ncig -90 txog -95, nws txhais tau tias lub teeb liab tsis zoo, mus txog -98 tsis ntseeg, mus txog -100 heev tsis ntseeg.
Lub teeb liab muaj zog tsawg dua -100 dBm (-101 thiab hauv qab) txhais tau tias nws siv tsis tau. Nws yog ib qho tseem ceeb heev rau lub teeb liab lub zog sib txawv ntawm qhov tsawg kawg yog tsib dBm, thiab cov yam ntxwv xws li cov xov tooj ntawm cov khoom siv txuas nrog tus pej thuam, tus xov tooj hu ua haujlwm, kev siv cov ntaub ntawv xov tooj ntawm tes, thiab lwm yam. cuam tshuam rau qhov no.
thaum qhov no yog cuam tshuam los ntawm yam xws li cov xov tooj ntawm cov khoom siv txuas nrog tus pej thuam, tus xov tooj hu xov tooj, kev siv cov ntaub ntawv xov tooj ntawm tes, thiab lwm yam.
… ntaus ntawv… :-D
txwv tsis pub, thaum ib tus neeg nyob ntawm lub vijtsam hauv tsev, los ntawm tapping tus ntiv tes ntawm lub teeb liab, nws hloov ntawm cov dots thiab dBm ...
Yog lawm, ib tus raug yuam kom muaj cov lej muaj zog thiab cov txheej txheem nrog cov nyees khawm, thaum txhua yam koj yuav tsum ua yog coj mus rhaub koj tus ntiv tes rau ntawm lub teeb liab thiab nws hloov mus rau sab nraud. ? Zoo, tsawg kawg yog ib qho kev xav ntawm cov ntawv qhia zais, uas tseem muaj txiaj ntsig. ?
Kuv sim, tab sis xyov nws tsis ua hauj lwm yam tsis muaj lub i7 ntaus code thiab qhov tseeb software
Kuv muaj iP5, qhov tseeb iOS no, thiab nws ua haujlwm txawm tias ntawm lub vijtsam xauv, thaum nkag mus rau tus lej, thiab ntawm desktops nrog cov cim. Kuv tsis paub tias cov xov tooj tshiab kawg li cas, kuv mam li nug ib tug npoj yaig. ?
Thiab yog tias kuv xav rov qab mus rau nws lub xeev qub? Ua tsaug
Peb sau nws nyob rau hauv cov ntawv nyeem: Yog hais tias koj xav rov qab mus rau lub classic zaub ntawm lub teeb liab zog dua, rov ua kauj ruam 1 thiab tom qab lub Field Test screen tshwm, cia li luv luv nias lub desktop khawm.
Zoo heev, ua tsaug ntau!
Nws qhia kuv -110 thiab nyob ib ncig ntawm -89, yog li kuv tsis paub qhov twg qhov yuam kev. Kev hu ua haujlwm.
Kuv muaj muaj - 102 thiab thaum hloov 3 npuas. Tseem, lub teeb liab zoo li txaus, txhua yam ua haujlwm zoo. Thiab raws li koj, nws yeej yuav tsum tsis txhob. Zoo, kuv tsis paub……………..