Taw qhia rau qhov tseeb ntawm Digital Multimeter
Qhov tseeb yog hais txog qhov ua yuam kev siab tshaj plaws hauv ib puag ncig siv tshwj xeeb. Hauv lwm lo lus, precision yog siv los qhia
Qhov ze ntawm qhov ntsuas tus nqi ntawm digital multimeter thiab tus nqi tiag tiag ntawm cov teeb liab ntsuas.
Rau DMMs, qhov tseeb feem ntau yog qhia raws li feem pua ntawm kev nyeem ntawv. Piv txwv li, lub ntsiab lus ntawm 1 feem pua ntawm kev nyeem ntawv qhov tseeb yog: thaum cov zaub ntawm digital multimeter yog 100.0V, qhov tseeb voltage yuav nyob nruab nrab ntawm 99.0V thiab 101.0V .
Tej zaum yuav muaj qhov tseem ceeb ntxiv rau qhov yooj yim precision hauv qhov specification. Nws lub ntsiab lus yog tus naj npawb ntawm cov lus yuav tsum tau ntxiv los hloov qhov kawg ntawm cov zaub. Hauv qhov piv txwv yav dhau los, qhov tseeb yuav raug suav tias yog ± (1 feem pua ntxiv rau 2). Yog li, yog GMM nyeem 100.0V, qhov tseeb voltage yuav nyob nruab nrab ntawm 98.8V thiab 101.2V.
Qhov tseeb ntawm lub ntsuas ntsuas analog yog xam raws li qhov ua yuam kev tag nrho, tsis yog cov ntawv nyeem. Qhov tseeb raug rau cov ntsuas ntsuas analog yog ± 2 feem pua lossis ± 3 feem pua ntawm tag nrho cov nplai. Qhov tseeb qhov tseeb ntawm DMM yog nyob nruab nrab ntawm ±(0.7 feem pua ntxiv rau 1) thiab ±(0.1 feem pua ntxiv rau 1) ntawm kev nyeem ntawv, lossis ntau dua.
