Kev ceev faj rau kev siv Professional multimeters
① Txhawm rau kho qhov "zero point" (tsuas yog muaj rau cov neeg kho tshuab saib), ua ntej siv lub moos, ua ntej xyuas tias tus pointer nyob ntawm "zero position" ntawm sab laug kawg. Yog tias tsis yog, koj yuav tsum maj mam tig lub "pib taw tes xoom txoj hauj lwm" nyob rau hauv nruab nrab ntawm rooj plaub nrog ib tug me me ntswj ntsia hlau kho tus ntsia hlau kom lub pointer taw tes rau xoom txoj hauj lwm.
②Lub multimeter yuav tsum muab tso rau kab rov tav thaum siv (tsuas yog rau cov tshuab)
③ Ua ntej qhov kev ntsuam xyuas, txiav txim siab cov ntsiab lus ntsuas, tig lub pob qhov hloov pauv mus rau qhov sib thooj ntawm cov ntsuas ntsuas, kom tsis txhob hlawv lub taub hau ntsuas.
④ Cov ntawv xeem yuav tsum raug muab tso rau hauv cov khoom sib xws.
⑤ Thaum lub sij hawm xeem, tsis txhob tig lub iav hloov pob qhov rooj arbitrarily.
⑥ Tom qab siv, nco ntsoov kho cov nplai hloov pob qhov rooj tsis muaj 'meter' mus rau qhov siab tshaj plaws ntawm AC voltage.
⑦ Thaum ntsuas qhov DC voltage thiab tam sim no, xyuam xim rau qhov zoo thiab qhov tsis zoo ntawm qhov hluav taws xob thiab qhov ntws tam sim no, thiab qhov kev sib txuas nrog qhov kev xeem ua (thaum) yog qhov tseeb.
