Pib nrog Digital Multimeter Resolution
Tus nqi hluav taws xob sib raug mus rau tus lej kawg ntawm qhov qis tshaj qhov ntsuas hluav taws xob ntawm digital multimeter yog hu ua kev daws teeb meem, uas qhia txog qhov rhiab heev ntawm qhov ntsuas. Qhov kev daws teeb meem ntawm cov cuab yeej digital nce nrog cov lej tso tawm. Qhov kev daws teeb meem siab tshaj plaws uas tuaj yeem ua tiav los ntawm digital multimeter nrog tus lej sib txawv yog txawv.
Qhov taw qhia kev daws teeb meem ntawm digital multimeter kuj tuaj yeem tshwm sim siv kev daws teeb meem. Kev daws teeb meem yog hais txog qhov feem pua ntawm tus lej tsawg kawg nkaus (tsis suav xoom) thiab tus lej siab tshaj plaws uas lub cuab yeej tuaj yeem tso tawm.
Nws yuav tsum tau taw qhia tias qhov kev daws teeb meem thiab qhov tseeb yog ob lub ntsiab lus sib txawv. Tus qub sawv cev rau qhov "rhiab heev" ntawm qhov ntsuas, uas yog, muaj peev xwm "qhia" me me voltages; Cov tom kawg qhia txog qhov "qhov tseeb" ntawm kev ntsuas, uas yog, qib ntawm qhov sib xws ntawm qhov ntsuas tau thiab qhov tseeb qhov tseeb. Tsis muaj qhov tsim nyog kev sib txuas ntawm ob, yog li lawv tsis tuaj yeem tsis meej pem, thiab kev daws teeb meem (lossis kev daws teeb meem) yuav tsum tsis txhob yuam kev rau qhov tseeb, uas nyob ntawm qhov kev ua yuam kev loj thiab quantization yuam kev ntawm sab hauv A / D converter thiab kev ua haujlwm ntawm lub ntsuas hluav taws xob. . Los ntawm kev ntsuas qhov ntsuas, kev daws teeb meem yog qhov ntsuas "virtual" (yooj yim ntawm kev ntsuas qhov yuam kev), thaum qhov tseeb yog qhov ntsuas "tiag tiag" (uas txiav txim siab qhov loj ntawm kev ntsuas qhov yuam kev). Yog li ntawd, nws tsis muaj peev xwm nce tus naj npawb ntawm cov khoom siv arbitrarily los txhim kho qhov kev daws teeb meem ntawm qhov ntsuas.
