Dab tsi yog qhov txawv ntawm cov oscilloscope digital thiab analog oscilloscope?
Analog oscilloscopes siv analog circuits (oscilloscope raj, uas yog raws li cov phom electron). Cov phom electron emissions electrons mus rau qhov screen. Cov emitted electrons yog teem rau tsim ib tug electron beam thiab ntaus lub screen. Sab hauv ntawm qhov screen yog coated nrog ib tug phosphor uas emits lub teeb qhov twg lub electron beam hits nws.
Cov oscilloscopes yog qhov ua tau zoo oscilloscopes tsim los ntawm cov thev naus laus zis xws li kev nrhiav tau cov ntaub ntawv, hloov pauv A / D, thiab software programming. Digital oscilloscopes feem ntau txhawb ntau cov ntawv qhia zaub mov thiab tuaj yeem muab cov neeg siv ntau yam kev xaiv thiab kev tshuaj xyuas ua haujlwm. Kuj tseem muaj qee qhov oscilloscopes uas tuaj yeem muab khaws cia kom txuag tau thiab ua cov txheej txheem waveforms.
Cov oscilloscopes siv cov kev qhia digital, thiab lawv cov qauv kev ua haujlwm yog raws li digital. Feem ntau, cov teeb liab txuas ntxiv yog kuaj (discretized) ua ntej. Tom qab ntawd lim.
Analog oscilloscopes ncaj qha ua cov cim txuas ntxiv siv cov analog circuits thiab tom qab ntawd tso tawm lawv. Tag nrho cov txheej txheem yog ua raws li analog circuits.
Lub oscilloscope yog ib qho cuab yeej siv hluav taws xob ntau yam. Nws tuaj yeem hloov qhov pom tsis pom hluav taws xob rau hauv cov duab pom, ua kom yooj yim rau tib neeg los kawm txog kev hloov pauv ntawm ntau yam xwm txheej hluav taws xob. Lub oscilloscope tuaj yeem siv los soj ntsuam cov waveform nkhaus ntawm ntau lub teeb liab amplitudes hloov nrog lub sijhawm. Nws kuj tseem siv tau los ntsuas ntau yam hluav taws xob, xws li voltage, tam sim no, zaus, theem sib txawv, amplitude modulation, thiab lwm yam.
Oscilloscopes tuaj yeem muab faib ua analog oscilloscopes thiab digital oscilloscopes.
Analog oscilloscope:
Analog oscilloscopes ua haujlwm los ntawm kev ntsuas lub teeb liab hluav taws xob ncaj qha thiab teeb tsa qhov hluav taws xob nyob rau hauv txoj kab ntsug los ntawm kab hluav taws xob hla hla lub oscilloscope npo ntawm sab laug mus rau sab xis.
Digital oscilloscope:
Txoj kev uas digital oscilloscope ua haujlwm yog los hloov qhov ntsuas qhov ntsuas mus rau hauv cov ntaub ntawv digital los ntawm kev hloov pauv analog (ADC). Lub oscilloscope digital captures ib tug series ntawm cov qauv ntawm waveform thiab khaws cov qauv mus txog rau thaum lub cia txwv txiav txim los txiav txim seb cov qauv sau tau depict lub waveform. Tom qab ntawd, digital oscilloscope reconstructs lub waveform.
Cov oscilloscopes tuaj yeem muab faib ua digital storage oscilloscopes (DSO), digital phosphor oscilloscopes (DPO) thiab sampling oscilloscopes.
Txhawm rau nce qhov bandwidth ntawm analog oscilloscopes, oscilloscope hlab, ntsug amplification thiab kab rov tav scanning yuav tsum tau nce siab. Txhawm rau txhim kho qhov bandwidth ntawm lub oscilloscope digital, koj tsuas yog yuav tsum tau txhim kho qhov kev ua tau zoo ntawm lub hauv ntej-kawg A / D converter, thiab tsis muaj cov cai tshwj xeeb rau oscilloscope raj thiab scanning circuit. Ntxiv rau cov oscilloscopes tuaj yeem ua rau tag nrho kev siv lub cim xeeb, khaws cia thiab ua haujlwm, nrog rau ntau qhov ua rau thiab ua kom muaj peev xwm ua ntej. Hauv xyoo 1980s, cov oscilloscopes digital dheev tshwm sim thiab ua tiav ntau qhov txiaj ntsig. Lawv muaj peev xwm los hloov cov analog oscilloscopes. Analog oscilloscopes muaj tseeb thim rov qab los ntawm lub rooj zaum pem hauv ntej mus rau keeb kwm yav dhau.
