Yuav siv cov digital oscilloscope li cas
1 Fluorescent screen
Lub vijtsam fluorescent yog ib feem ntawm lub oscilloscope. Kab rov tav thiab ntsug cov lus qhia ntawm lub vijtsam txhua tus muaj ntau qhov ntsuas kab, qhia txog kev sib raug zoo ntawm qhov hluav taws xob thiab lub sijhawm ntawm lub teeb liab waveform. Raws li ntsuas lub teeb liab ntawm lub vijtsam nyob los ntawm tus naj npawb ntawm cov thav ntawv multiplied los ntawm qhov tsim nyog tas li ntawm proportionality (V / DIV, TIME / DIV) tuaj yeem muab tau los ntawm qhov ntsuas hluav taws xob thiab lub sijhawm.
2 oscillator thiab fais fab mov system
(1) Fais fab (Hwj chim) - oscilloscope lub ntsiab fais fab hloov. Thaum qhov kev hloov no raug nias, lub hwj chim taw qhia teeb pom kev, qhia tias lub hwj huam mov yog qhib.
(2) Glow (Intensity) - Tig lub pob qhov rooj no los hloov qhov ci ntawm qhov chaw teeb pom kev zoo thiab cov kab scanning. Kev soj ntsuam ntawm cov teeb liab tsawg zaus tuaj yeem ua me me, cov teeb liab ntau zaus, loj dua. Feem ntau yuav tsum tsis txhob ci dhau los tiv thaiv lub vijtsam fluorescent.
(3) Ua kom pom tseeb (Focus) - Ua kom pom tseeb pob qhov rooj kho qhov loj ntawm cov kab hluav taws xob hluav taws xob hla ntu, cov kab scanning yuav raug tsom mus rau hauv lub xeev clearest.
(4) Scale brightness (Illuminance) - Lub pob qhov rooj no kho qhov ci ntawm lub teeb ci tom qab lub vijtsam fluorescent. Lub teeb nyob sab hauv ib txwm, teeb pom kev tsaus ntuj zoo dua. Nyob rau hauv ib puag ncig ntawm lub teeb qis hauv tsev, lub teeb pom kev zoo tuaj yeem hloov kho kom haum.
3 Vertical deflection factor thiab kab rov tav deflection factor
(1) Vertical deflection factor xaiv (VOLTS / DIV) thiab zoo-tuning
Nyob rau hauv qhov kev txiav txim ntawm chav tsev input teeb liab, qhov kev ncua deb ntawm lub teeb taw tes yog deflected ntawm lub vijtsam yog hu ua offset rhiab heev, thiab cov ntsiab lus no siv rau ob qho tib si X-axis thiab Y-axis. Lub reciprocal ntawm rhiab heev yog hu ua deflection factor. Vertical rhiab heev yog ntsuas nyob rau hauv cm / V, cm / mV los yog DIV / mV, DIV / V, thiab ntsug deflection yam yog ntsuas nyob rau hauv V / cm, mV / cm los yog V / DIV, mV / DIV.
Txhua channel nyob rau hauv ib txoj kab oscilloscope muaj ib tug ntsug deflection yam selector band hloov. Feem ntau muaj ib lub pob me me ntawm txhua qhov kev hloov pauv uas ua kom zoo nkauj ntawm txoj kev deflection ntsug rau txhua kauj ruam. Tig lub pob qhov rooj clockwise mus rau qhov "calibration" txoj hauj lwm, qhov chaw ntsug deflection tus nqi yog tib yam li qhia los ntawm kev hloov band. Tig lub pob qhov rooj sib tshooj no yuav ua kom zoo rau qhov zoo tshaj plaws deflection. Nws yuav tsum raug sau tseg tias qhov kev hloov kho zoo ntawm txoj kab ntsug deflection tuaj yeem ua rau tsis sib xws nrog tus nqi qhia los ntawm kev hloov band. Ntau cov oscilloscopes muaj txoj haujlwm ntsug nthuav dav, thaum lub pob qhov hloov kho tau raug rub tawm, qhov kev xav ntawm qhov ntsug yog loj los ntawm ob peb zaug (qhov cuam tshuam deflection yog txo los ntawm ob peb zaug).
(2) Kev xaiv lub sij hawm pib (TIME/DIV) thiab kho kom zoo
Lub sij hawm lub hauv paus xaiv thiab zoo tuning yog siv nyob rau hauv ib tug zoo xws li txoj kev rau ntsug deflection yam xaiv thiab zoo tuning. Lub sij hawm lub hauv paus xaiv kuj paub los ntawm ib tug band hloov, uas faib lub sij hawm puag mus rau hauv ib tug xov tooj ntawm cov kauj ruam nyob rau hauv lub 1, 2 thiab 5. Qhov taw qhia tus nqi ntawm lub band hloov yog lub sij hawm tus nqi rau lub point ntawm lub teeb txav mus. ib tug ncej nyob rau hauv kab rov tav kev taw qhia. Piv txwv li, nyob rau hauv 1μS / DIV hom, qhov taw tes ntawm lub teeb txav ib tug ncej ntawm lub vijtsam sawv cev rau lub sij hawm tus nqi ntawm 1μS.
Lub pob qhov "Trim" yog siv rau lub sij hawm puag calibration thiab trimming. Thaum lub pob qhov rooj tig clockwise mus rau txoj hauj lwm calibration, lub sij hawm lub hauv paus tus nqi tso tawm ntawm qhov screen yog tib yam li tus nqi nominal qhia los ntawm kev hloov band. Tig lub pob qhov rooj counterclockwise, lub sij hawm puag yog zoo-tuned. 10MHz, 1MHz, 500kHz, 100kHz moos teeb liab muaj nyob rau ntawm TDS lab lub rooj ntev zaum, tsim los ntawm quartz siv lead ua oscillator thiab zaus divider, nrog rau qib siab ntawm qhov tseeb, uas tuaj yeem siv los ntsuas lub sijhawm ntawm oscilloscope. Lub oscilloscope tus qauv teeb liab qhov chaw, CAL, yog tsim tshwj xeeb rau calibrating oscilloscope lub sij hawm puag thiab ntsug deflection yam. Txoj hauj lwm pob qhov rooj ntawm lub vaj huam sib luag pem hauv ntej ntawm oscilloscope kho qhov chaw ntawm lub teeb liab waveform ntawm phosphor screen.
4 Input Channel thiab Input Coupling xaiv
(1) Kev xaiv Channel nkag - Muaj tsawg kawg yog peb txoj hauv kev xaiv cov tswv yim: channel 1 (CH1), channel 2 (CH2), thiab dual channel (DUAL).
(1) CH1: Channel 1 yog tso tawm nyias;
(2) CH2: Channel 2 yog tso tawm cais;
(3) ALT: ob txoj kev tso tawm ua ke;
(4) CHOP: ob-channel intermittent zaub, siv rau dual-trace zaub thaum scanning qeeb;
(5) ADD: teeb liab superposition ntawm ob channel. Kev saib xyuas xaiv channel 1 lossis channel 2 ntau dua.
(2) Input coupling hom Input coupling hom - AC (AC), av (GND), DC (DC).
5 vim
(1) Kev xaiv qhov chaw (Source) - ua kom lub vijtsam tso saib lub zog ruaj khov, nws yog ib qho tsim nyog los ntsuas lub teeb liab nws tus kheej lossis nrog cov teeb liab ntsuas muaj qee lub sij hawm sib raug zoo ntawm cov teeb liab teeb liab ntxiv rau qhov ntsuas hluav taws xob. Trigger qhov chaw xaiv los txiav txim siab lub teeb liab los ntawm qhov chaw muab khoom. Feem ntau muaj peb qhov kev tshwm sim: sab hauv txhais (INT), lub zog txhais (LINE), sab nraud txhais EXT).
(2) Trigger coupling (Coupling) hom xaiv - lub teeb liab teeb liab rau lub trigger circuit muaj ntau yam kev sib txuas, lub hom phiaj yog ua kom lub teeb liab ruaj khov thiab txhim khu kev qha. Ntawm no yog ob peb feem ntau siv: AC coupling, tseem hu ua capacitive coupling, DC coupling (DC) tsis cais cov DC tivthaiv ntawm lub teeb liab.
(3) Trigger level (Level) thiab trigger polarity (Slope) - Trigger level adjustment, also known as synchronous adjustment, which makes the scanning and the measured signal synchronisation. Level adjustment knob los kho cov theem trigger ntawm lub teeb liab. Thaum lub teeb liab txhais tau ntau tshaj qhov txhais tau hais los ntawm lub pob qhov rooj, lub scan tau tshwm sim. Tig lub pob qhov rooj clockwise nce qhov txhais tau; tig nws los tiv thaiv clockwise txo cov qib trigger.
