2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Yuav kom ua tiav qhov kev sib txuas txhim khu kev qha, theem teeb liab yuav tsum muaj ntau dua li lub suab nrov. Ib qho SNR ntau dua 40 dB yog suav tias yog qhov zoo tshaj plaws, qhov SNR qis dua 15 dB yuav ua rau qeeb, tsis muaj kev sib txuas.
Koj puas xav tau SNR siab lossis qis?
Ideally, koj xav aim rau siab dua SNR. Kuv xav hais tias 20 dB lossis ntau dua yog qhov zoo SNR. Ntau tshaj 40 dB tseem zoo dua! Pom zoo yam tsawg kawg nkaus SNR rau cov ntaub ntawv yog 18 dB thiab rau lub suab tshaj wifi nws yog 25 dB.
SNR qib zoo yog dab tsi?
Feem ntau, lub teeb liab nrog tus nqi SNR ntawm 20 dB lossis ntau dua tau pom zoo rau cov ntaub ntawv sib txuas uas yog SNR tus nqi ntawm 25 dB lossis ntau dua yog pom zoo rau cov tes hauj lwm uas siv lub suab daim ntawv thov. Kawm paub ntau ntxiv txog Kev Ntsuas-rau-Noise Ratio.
Puas SNR tseem ceeb?
Feem ntau sau ua SNR lossis S / N, qhov kev qhia tshwj xeeb no tuaj yeem zoo li cryptic rau cov neeg siv khoom nruab nrab. Txawm li cas los xij, thaum tus lej tom qab lub teeb liab-rau-lub suab sib piv yog cov txuj ci, lub tswv yim tsis yog, thiab tus nqi teeb liab-rau- suab nrov tuaj yeem cuam tshuam rau lub kaw lus tag nrho lub suab zoo.
Puas siab dua dB teeb liab zoo dua?
Koj lub xov tooj ntawm tes lub teeb liab lub zog yog ntsuas hauv decibels. Feem ntau, siab dua chav dBm, qhov zoo dua.
Pom zoo:
Kuv puas yuav tsum nthwv dej ntawm qhov siab lossis qis?
Ntawm dej zoo tshaj plaws rau kev caij nkoj hauv feem ntau yog qis, mus rau qhov dej nruab nrab tuaj. Nco ntsoov tias cov dej ntws qis ntawm qhov dej ntiav ntiav ua rau cov nthwv dej nce siab dua, tawm hauv chav tsawg dua ntawm cov dej saum npoo thiab dej hiav txwv hauv qab.
Vim li cas qis qis qis qis tv ma?
qis qis yog rated R rau lus, kev nruj kev tsiv, duab liab qab, thiab gore. Vim li cas thiaj pom TV-Ma? Ntshav, kev sib ntaus sib tua ua phem muaj kev txiav plaub hau, stabbing, maulings, thiab lwm yam xwm txheej phem. Riam phom muaj xws li axes, rakes, bludgeons, ropes, aub qus, thiab lwm yam.
Koj puas ntxiv cov tub yees kom qis qis dua?
Ntxiv refrigerant kom subcooling. Rov qab cov tub yees kom txo qis qis. Nco ntsoov tias yog tias lub subcooling thiab superheat yog qhov tseeb, thiab qhov nqus siab tsawg, lub kaw lus tej zaum yuav muaj cua tsis txaus. … Yog tias koj tau txais xoom degrees superheat nrog TXV, ces TXV muaj qhov tsis zoo thiab yuav tsum tau hloov.
Cov txiv hmab txiv ntoo yuav tsum siab lossis qis qis?
Cua ntws tsawg txhais tau tias cov av noo ntau dua. Qhov tseem ceeb, veggies nyiam cov av noo siab thiab txiv hmab txiv ntoo nyiam cov av qis. Cov nplooj ntsuab yuav zoo tshaj plaws nrog cov av noo ntau dua thiab qhov txias tshaj plaws. Yuav ua li cas cov av noo zoo rau txiv hmab txiv ntoo?
Kuv puas muaj tus choj qhov ntswg siab lossis qis?
Xav paub yog tias koj muaj low tus choj ntswg, peb muaj ib qho kev sim yooj yim. Saib rau hauv daim iav, thiab siv koj tus ntiv tes mus nrhiav saum koj tus choj lub qhov ntswg. Tom qab ntawd, ceeb toom seb koj tus ntiv tes zaum saum toj, hauv kab nrog, lossis hauv qab koj cov menyuam kawm ntawv.
