Yuav ua li cas yuav ua rau tus oscilloscope los ntawm lub suab card

Txhua amateur xov tooj cua yuav tsum ib tug ntaus ntawv, xws li ib tug oscilloscope nyob rau hauv nws lub tsev kuaj. Nws yuav tsum tau kho thiab hloov ntawm hluav taws xob circuits. Tsis tas li ntawd, tsis muaj hais tias ntaus tsis tswj rau txoj kev tshawb ntawm tshiab circuits thiab lawv lub zog. Txawm li cas los, tus nqi ntawm cov thiab analog oscilloscope yog heev siab heev. Koj yuav tau sim mus nrhiav ib tug ntaus ntawv siv, tab sis cov no pab kiag li lawm yog tsis rau txhua leej hauv ib lub hnab tshos. Qhov tsab xov xwm tsom yuav ua li cas yuav ua rau tus oscilloscope los ntawm lub suab card. Tus nqi ntawm xws hloov yog negligible, vim hais tias lub hauv paus ntawm lub hais tias ntaus ntawv yuav siv sij hawm lub PC ib feem. Yuav kom tso saib cov waveform siv tshwj xeeb software.

Oscilloscope daim card suab: qhov zoo thiab qhov tsis zoo

Qhov zoo ntawm tus dais nyob rau hauv saib xyuas muaj xws li tus nqi qis, ntawm chav kawm, nrog rau cov kev zam ntawm lub computer xwb. Tam sim no lub drawbacks. Nyuam: yuav muaj ntau tshaj nqis. Lub ntsiab disadvantage, uas yog yus muaj los ntawm ib tug oscilloscope los ntawm lub suab card - qhov no yog ib tug heev rhiab heev. Nws reacts txawm mus rau xov tooj cua cuam, uas ua rau ib tug waveform yuav muaj kom raug. Qhov thib ob disadvantage yog qhov tseeb hais tias lub tswv yim interface yog ib lub suab card uas muaj peev xwm txhawb lub teeb liab amplitude tsis pub tshaj 2 V. Qhov no txhais tau hais tias cov card tau yooj yim yuav puas ntsoog. Qhov no tsis muaj peev xwm yuav tsum raug xam tias yog nyob rau hauv lub chaw ua khoom ntawm lub adapter. Lub oscilloscope ntawm lub suab card yog tsis muaj peev xwm ntsuas DC voltage.

Yuav ua li cas yuav ua rau ib tug adapter

Ua ntej ntawm tag nrho nws yog tsim nyog los noj mus rau hauv tus account lub tswv yim theem ntawm lub suab card, feem ntau nws tsis yog ntau tshaj li ob volts, thiab nyob rau hauv ib co boards - tsawg tshaj li ib volt. Lawm, nws yuav tsis txaus rau cov kev ntsuas ntawm no amplitude. Qhov no yuav tsum tau ib tug adapter uas yuav pub rau kom cov kev txwv ntawm lub teeb liab amplitude. Software - oscilloscope - muaj ob tug permissible theem ntsuam: 12.5 V thiab 250 V. Schematic daim duab ntawm xws li ib tug ntaus ntawv muaj tsuas rau cov ntsiab - resistors. R1 thiab R2 yog nyob rau hauv nominal kuj 1.5 Mohm, R3 thiab R4 - 75 ohms, R5 thiab R6 - 1,5 kohm. Fais fab dissipation resistors yuav tsum tsis txhob yuav tsawg tshaj li 0.5 watts. Lub Circuit Court muaj ib tug inlet 5 hu (ob - los ntawm lub teeb liab qhov chaw 250, ob - 12.5 Tus thib tsib thiab - zuag qhia tag nrho - lead) thiab peb tso zis ntawm cov zis txuas nrog rau txoj kab kev tawm tswv yim ntawm lub suab card (sab laug thiab txoj cai raws thiab qhia).

Peb npaj mus rau qhov kev piav qhia ntawm lub adapter tswvyim. Tus thawj khub ntawm inputs - "qhov chaw 250" - yog kev cob cog rua rau resistors R1 thiab R2, ntxiv - nrog R3 thiab R4; ntawm cov qhov tso zis davhlau ya nyob twg, ntsig txog, rau sab laug thiab txoj cai raws ntawm txoj kab tswv yim. Ib tug thib ob khub ntawm "qhov chaw ntawm 12.5 V" "ib yam" yog kev cob cog rua ntawm lub resistors, i.e. ib davhlau ya nyob twg - nruab nrab ntawm R1 thiab R3, thiab lub thib ob - nruab nrab ntawm R2 thiab R4. Thiab thaum kawg, qhov kawg, tag nrho cov zis mus txog rau lub connector line-nyob rau hauv suab card. Nws yog kev cob cog rua nrog lub sab laug thiab txoj cai raws los ntawm resistors R5 thiab R6, kev cob cog rua tom qab cov khub ntawm resistors R3 thiab R4. Nyob rau hauv thiaj li yuav txo cov nyhuv ntawm cov suab nrov nyob rau hauv lub ntaus ntawv, koj yuav tsum muab lub adapter board mus rau lub hlau vaj tse nyob. Ntawm no, nyob rau hauv qhov tseeb, tus tag nrho oscilloscope. Lub suab card tau txais khoom Pib ntsais koj teeb, thiab cov software qhia txog cov waveform rau ib tug computer saib.

Teem tau qhov kev pab cuam

Yuav kom kho cov oscilloscope los ntawm lub suab card, koj yuav tsum mus rau mixers PC thiab xu nce nyob rau hauv cov microphone, teem lub ntim theem hauv qab no yog qhov nruab nrab. Cov uas ua ntsuas ntaus ntawv yog tau rho tawm kom meej meej rau waveform es tsawg zaus, thiab los mus txiav txim lub zaus ntawm lub teeb liab.