Qhov sib txawv ntawm cov tub ntxhais kawm thiab cov kev siv ib txwm siv ntawm Multimeters vs. Oscilloscopes
Lub tshuab hluav taws xob digital, raws li nws lub npe qhia, yog ib qho kev ntsuas ntau yam uas tuaj yeem muab kev ntsuas ntawm ntau yam hluav taws xob tsis xws li voltage, tam sim no, thiab tsis kam. Piv rau analog multimeters, digital multimeters ua tiav qhov kev ntsuas siab dua los ntawm cov thev naus laus zis digital thiab feem ntau muaj LCD lossis LED cov lus qhia los tso saib cov ntawv nyeem hauv daim ntawv digital, ua rau kev ntsuas tau zoo dua thiab raug.
Qhov txiaj ntsig tseem ceeb ntawm digital multimeter yog nyob rau hauv nws qhov kev ntsuas qhov tseeb rau DC kev tsis ncaj ncees. Nws siv ib qho tseem ceeb ADC (Analog rau Digital Converter), uas txo cov suab nrov thiab cuam tshuam los ntawm qhov nruab nrab ntawm lub teeb liab, yog li txhim kho qhov tseeb ntawm DC ntsuas. Qhov no ua rau digital multimeters tshwj xeeb tshaj yog tsim nyog rau kev ntsuas qhov tseeb ntawm qis- zaus lossis cov cim tsis tu ncua, xws li roj teeb voltage, DC cov ntsiab lus ua haujlwm hauv circuits, thiab lwm yam.
Cov yam ntxwv thiab kev siv ntawm Oscilloscope
Lub hom phiaj tseem ceeb ntawm oscilloscope tsim yog los soj ntsuam thiab txheeb xyuas cov kev hloov pauv ntawm cov cim lub sijhawm. Nws yog ib qho cuab yeej uas tuaj yeem tso saib cov yoj ntawm qhov hloov pauv ntawm lub sijhawm, feem ntau siv rau kev ntsuas, saib xyuas, thiab debugging hluav taws xob circuits. Lub luag haujlwm tseem ceeb ntawm oscilloscope yog txhawm rau ntes thiab tso tawm cov teeb liab waveforms, tso cai rau cov neeg siv kom pom tseeb tias lub teeb liab hloov pauv li cas, uas yog qhov tseem ceeb tshwj xeeb rau kev tsom xam ntawm qhov siab - zaus cov teeb liab los yog cov waveforms nyuaj.
Oscilloscopes feem ntau siv tsis yog ADCs, uas txhais tau hais tias lawv tuaj yeem ntsuas thiab rov tsim cov teeb liab waveforms taw tes. Qhov taw tes los ntawm qhov ntsuas ntsuas no ua rau oscilloscopes ntsuas cov cim ntawm ntau zaus thiab ua kom pom tseeb cov yam ntxwv xws li teeb liab duab, amplitude, thiab lub sijhawm. Tsis tas li ntawd, niaj hnub oscilloscopes tseem koom nrog ntau yam kev ua haujlwm siab heev xws li Fast Fourier Transform (FFT), waveform cia thiab playback, thiab teeb tsa, muab cov neeg siv nrog cov teeb liab muaj zog tsom xam thiab kev kuaj pom muaj peev xwm.
Kev sib piv ntawm daim ntawv thov scenarios
Thaum xaiv ntawm kev siv digital multimeter los yog oscilloscope, nws yog ib qho tsim nyog yuav tau xav txog cov kev ntsuas tshwj xeeb. Lub tshuab hluav taws xob digital yog tsim rau cov xwm txheej uas yuav tsum tau ntsuas qhov tseeb ntawm DC kev tsis ncaj ncees, tsis kam, thiab qis - cov cim zaus. Piv txwv li, hauv kev saib xyuas cov khoom siv hluav taws xob, ntsuas lub zog hluav taws xob lossis kuaj xyuas seb puas muaj cov pob qij txha hauv circuits ua tau zoo heev rau kev siv digital multimeter.
Oscilloscopes yog qhov tsim nyog rau kev txheeb xyuas cov teeb liab waveforms, ntsuas siab -frequency signals, los yog saib cov teeb liab hloov lub sij hawm. Hauv kev tsim thiab kev tsim kho theem ntawm cov khoom siv hluav taws xob, oscilloscopes yog siv los txheeb xyuas qhov tseeb ntawm kev tsim hluav taws xob, saib xyuas kev ncaj ncees ntawm cov teeb liab, thiab kev debug lub sij hawm teeb meem hauv digital circuits.
