Taw qhia rau txoj kev ntsuas theem nrog oscilloscope
Nws yog ib qho tseem ceeb ntawm kev siv oscilloscope los ntsuas theem sib txawv ntawm ob qhov sinusoidal voltages. Lub txee tuaj yeem ntsuas qhov zaus thiab lub sijhawm, tab sis nws tsis tuaj yeem ntsuas ncaj qha rau theem kev sib raug zoo ntawm sinusoidal voltages. Muaj ntau txoj hauv kev los ntsuas theem nrog oscilloscope. Hauv qab no, tsuas yog ob peb txoj kev siv yooj yim tau qhia.
1. ob txoj kev taug qab
Ob txoj kev taug qab siv ob txoj kab oscilloscope ncaj qha los sib piv cov waveforms ntawm ob qhov ntsuas hluav taws xob ntawm lub vijtsam fluorescent los ntsuas lawv theem kev sib raug zoo. Thaum lub sij hawm ntsuas, txuas cov theem ua ntej teeb liab mus rau YB channel thiab lwm yam teeb liab rau YA channel. Xaiv YB txhais. Kho qhov hloov "t / div" kom ib lub voj voog ntawm qhov ntsuas waveform kom raug 8 div ntawm tus kav kab rov tav. Nyob rau hauv txoj kev no, lub kaum sab xis ntawm 360 degree hauv ib lub voj voog yog muab faib ua 8 qhov sib npaug, thiab txhua 1 div yog sib npaug rau 45 degree. Nyeem qhov sib txawv T ntawm cov ua nthwv dej thiab lub lagging yoj ntawm kab rov tav axis, thiab xam cov theem sib txawv φ raws li cov qauv hauv qab no:
φ{0}} degree /div × T(div)
Yog T==1.5div, ces φ=45 degree /div × 1.5div=67.5 degree
2. Kev ntsuas theem siv Lissajous daim duab txoj kev
Muab X-axis xaiv ntawm oscilloscope ntawm X-axis input txoj hauj lwm, txuas teeb liab u1 mus rau Y-axis input kawg ntawm oscilloscope, thiab txuas teeb liab u2 mus rau X-axis input kawg ntawm oscilloscope. Tsim nyog kho cov pob qhov rooj ntawm lub vaj huam sib luag oscilloscope kom lub ellipse ntawm qhov tsim nyog loj tshwm ntawm qhov screen (hauv qhov tshwj xeeb, nws yuav yog lub voj voog zoo meej lossis kab kab pheeb ces kaum).
Yuav ua li cas lub oscilloscope xam scan ceev?
Lub scanning ceev ntawm oscilloscope yog tso tawm nyob rau sab laug sab laug, 10mS / div; qhov attenuation yam ntawm channel 1 yog 1V / div (qhov kev sojntsuam attenuation piv yuav tsum phim qhov chaw); Kuv tsis nkag siab qhov dav kab rov tav yog dab tsi.
Analog oscilloscopes tuaj yeem suav cov zaus, lub sijhawm, qhov siab tshaj-rau-nruab nrab voltage ...
Period T = scanning speed (t/div) × the number of grids div occupied by the waveform in one repeating period in the horizontal direction (peak to peak, or valley to valley>;
Zaus f=1/T;
Peak-rau-peak voltage Vpp=attenuation factor (V/div) × naj npawb ntawm daim phiaj nyob los ntawm lub waveform nyob rau hauv txoj kab ntsug;
Hauv cov oscilloscope digital no, cov no tuaj yeem pom hauv cov ntawv qhia zaub mov, yog li tsis tas yuav suav, uas yooj yim heev.
