Oscilloscope bandwidth yog dab tsi? Oscilloscope bandwidth nqis
Lub oscilloscope bandwidth hais txog kev nkag mus rau lub teeb liab nrog tib lub amplitude thiab hloov zaus. Thaum lub oscilloscope nyeem ntawv yog attenuated los ntawm 3dB piv nrog tus nqi tseeb, qhov zaus ntawm lub sij hawm no yog bandwidth ntawm oscilloscope. Hauv lwm lo lus, qhov ntsuas tus nqi ntawm cov teeb liab tawm ntawm oscilloscope bandwidth yog tus nqi tiag tiag -3dB, thiab bandwidth tsis yog qhov ntau zaus uas oscilloscope tuaj yeem tso tawm. Feem ntau hais lus, qhov bandwidth ntawm oscilloscope yuav tsum yog 3 mus rau 5 npaug ntawm qhov siab tshaj plaws ntawm cov teeb liab raug ntsuas.
Zoo sib xws nrog oscilloscope lub bandwidth specification yog nws lub sij hawm nce parameter. Ib qho oscilloscope nrog Gaussian zaus teb muaj lub sijhawm nce txog ntawm {{0}}.35/fBW raws li tus qauv 10% txog 90%. Lub sijhawm nce ntxiv ntawm oscilloscope nrog cov lus teb loj tshaj plaws yog feem ntau nyob rau hauv 0.4 / fBW ntau yam, uas txawv nrog rau qhov sib txawv ntawm qhov zaus dov-off yam ntxwv ntawm oscilloscope. Yog tias 20% lub sijhawm yuam kev raug tso cai thaum ua qhov nce thiab poob lub sijhawm ntsuas ntsuas, oscilloscope nrog bandwidth ntawm 1 GHz yuav txaus rau daim ntawv thov ntsuas digital no. Tab sis yog hais tias lub sij hawm raug yuav tsum tau nyob rau hauv 3%, nws yog zoo dua mus siv ib tug oscilloscope nrog ib tug bandwidth ntawm 2GHz.
Yuav ua li cas kho qhov bandwidth txwv ntawm oscilloscope
Nyob rau hauv lub channel khawm ntawm lub ntsuas, yog tias koj nias lub CH1 khawm, cov ntawv qhia zaub mov uas tshwm yuav tsum muaj kev xaiv ntawm bandwidth txwv.
Muaj kev sib txuas hauv feem ntau oscilloscopes uas txwv qhov bandwidth ntawm oscilloscope. Tom qab qhov txwv bandwidth qhib, lub suab nrov uas tshwm sim ib ntus hauv cov duab waveform tuaj yeem raug txo qis, thiab cov duab waveform yuav pom meej dua. Tab sis thov nco ntsoov tias thaum tshem tawm cov suab nrov, kev txwv bandwidth tseem yuav txo lossis tshem tawm cov teeb liab ntau zaus. Dingyang oscilloscope, tom qab lub bandwidth txwv tau qhib, nws yuav lim tawm suab nrov tshaj 20M.
