Kev daws teeb meem EMI hauv lub sijhawm thiab zaus zaus siv RTO digital oscilloscopes
RTO digital oscilloscopes tuaj yeem pab txhim kho engineers txheeb xyuas EMI teeb meem hauv lub sijhawm sau npe thiab zaus sau npe thaum tsim hluav taws xob, thiab tuaj yeem pab nrhiav qhov ua rau EMI. Lub RTO digital oscilloscope muaj suab nrov tsis tshua muaj suab nrov, thiab nws qhov rhiab heev tuaj yeem ncav cuag 1mv/div nyob rau hauv tag nrho cov bandwidth ntau ntawm 0-4GHz. RTO lub sijhawm tiag tiag FFT spectrum tsom xam muaj peev xwm tuaj yeem siv nrog kev sojntsuam ze ntawm qhov chaw kuaj mob EMI.
Daim duab: R&S RTO digital oscilloscope - suab nrov qis pem hauv ntej-kawg / kev ua haujlwm siab FFT tsim lub zog EMI kuaj cov cuab yeej
Tus yuam sij rau EMI kev kuaj mob yog FFT thev naus laus zis. Nrog rau FFT muaj nuj nqi ntawm ib txwm oscilloscopes, nws yog ib qho nyuaj rau teem tsis nyob rau hauv lub zaus sau, thiab spectrum tsom xam yuav siv sij hawm ntev. Txij li thaum FFT kev khiav hauj lwm cuam tshuam ntawm R&S RTO oscilloscope yog raws li lub spectrum analyzer, cov neeg siv tau ncaj qha teeb tsis, suav nrog pib zaus, txiav tawm zaus, bandwidth daws teeb meem thiab hom ntes, ib yam li siv lub spectrum analyzer.
Lub zog FFT thev naus laus zis ua ke nrog lub cim xeeb loj qhov tob ntawm RTO oscilloscope tso cai rau cov neeg siv los ntawm nws tus kheej teeb tsa lub sijhawm sau npe thiab zaus sau cov cim thiab hloov pauv hloov pauv hauv lub sijhawm sau thiab zaus sau. Cov yam ntxwv no tso cai rau cov neeg siv los txheeb xyuas qhov chaw ntawm kev cuam tshuam hluav taws xob sai li sai tau.
R&S RTO oscilloscope siv Overlap FFT rau kev txheeb xyuas zaus. Overlapping FFT thev naus laus zis tuaj yeem ua tiav qhov kev xav tau siab rau cov hluav taws xob spurious thiab ntes qee zaus spurious zaus cov ntsiab lus. Lub oscilloscope thawj zaug faib lub sijhawm ntes cov cim npe rau hauv ob peb lub sijhawm, thiab tom qab ntawd ua FFT suav kom tau txais cov spectrum ntawm txhua ntu ntu, kom lub zog qis qee zaus cov teeb liab tuaj yeem ntes tau hauv spectrum.
Tom qab ntawd, cov cim nrog ntau zaus raug cim nrog cov xim sib txawv, thiab FFT tsom xam spectrum ntawm txhua lub sij hawm sib xyaw ua ke ua tiav spectrum.
Cov hluav taws xob hluav taws xob thiab hluav taws xob tshwm sim raug cim nrog cov xim sib txawv. Kev tsom xam spectrum siv cov txheej txheem xim sib txawv tuaj yeem ua kom pom tseeb hom thiab zaus ntawm EMI hluav taws xob.
Windowed FFT thev naus laus zis tso cai rau cov neeg siv los kho lub sijhawm lub qhov rais ntawm lub teeb liab ntes, ua FFT tsom xam ntawm tsuas yog lub teeb liab nyob rau hauv lub sij hawm qhov rais, thiab txheeb xyuas cov kev sib raug zoo ntawm txhua lub sij hawm domain teeb liab thiab lub spectrum los ntawm zawv zawg qhov rais. Piv txwv li, cov txheej txheem no tuaj yeem siv los txheeb xyuas EMI teeb meem tshwm sim los ntawm transistor overshoot hauv kev hloov cov khoom siv hluav taws xob. Tom qab lees paub qhov teeb meem taw tes, tus neeg siv tuaj yeem tshawb xyuas cov txiaj ntsig ntawm kev kho kom raug sai.
Cov cuab yeej template kuj zoo heev thaum txheeb xyuas cov teeb meem hluav taws xob tsis zoo. Cov neeg siv txhais cov qauv hauv qhov ntau zaus thiab ua cov teeb tsa sib raug rau cov teeb meem txhaum cai, kom lawv tuaj yeem txiav txim siab qhov teeb meem twg ua txhaum spectrum. Txawm tias cov teeb liab tau raug ntes, cov neeg siv tuaj yeem kho FFT tsis, xws li qhov rais loj thiab qhov kev daws teeb meem zaus. Cov haujlwm muaj zog zoo li no tso cai rau cov neeg siv ua tib zoo tshuaj xyuas ntawm EMI hluav taws xob uas nyuaj rau kev ntes.
R&S RTO oscilloscope teeb tsa tus qauv tshiab rau oscilloscopes nrog nws cov khoom nplua nuj thiab kev tsom xam. Nyob rau tib lub sijhawm, ua ke nrog ntau yam khoom siv, xws li R&S HZ-15 nyob ze-thaj chaw sojntsuam, nws muab tag nrho cov txheej txheem EMI kuaj kev daws teeb meem.
