Siv lub tshuab digital multimeter los txiav txim siab txoj hauv kev ntawm cov hlau thiab cable breakpoints
Digital multimeter ntxiv rau qhov voltage, tam sim no, tsis kam, capacitance thiab transistors thiab lwm yam kev ntsuas kev ntsuas, tab sis kuj los ntawm kev siv cov kev hloov pauv, kom nws txoj haujlwm yuav tsum tau nthuav dav ntxiv kom ua tiav lub hom phiaj ntawm lub rooj ntau lub hom phiaj. Tam sim no muab nrog ib tug digital multimeter los txiav txim txoj kev ntawm cable> hlau cable breakpoints.
Thaum cov kab hluav taws xob lossis cov kab hluav taws xob sab hauv cov kab tawg ua txhaum, vim yog cov khoom siv hluav taws xob sab nraud ntawm daim tawv nqaij, kom qhov tseeb ntawm cov kab tawg tsis yooj yim los txiav txim. Nrog rau digital multimeter tuaj yeem ua qhov teeb meem nyuaj no yooj yim. Txoj kev tshwj xeeb: txuas ib kawg ntawm cov xaim (cable) nrog qhov taw tes tawg mus rau 220V mains firewire, lwm qhov kawg raug tshem tawm. Cov multimeter digital yuav raug rub mus rau AC2V thaiv, los ntawm cov xaim (cable) ntawm cov hluav taws xob nkag mus rau qhov kawg ntawm qhov pib, nrog ib txhais tes pinch ntawm tus cwj mem dub, lwm yam tes yuav yog tus cwj mem liab raws li daim tawv nqaij insulating. ntawm cov xaim mus qeeb, lub sij hawm no cov zaub qhia tus nqi ntawm qhov voltage ntawm txog 0.445V (DT890D-type table measured) los yog li ntawd. Thaum tus cwj mem liab tsiv mus rau ib qho chaw, cov zaub qhia tias qhov hluav taws xob tam sim ntawd poob rau 0.0 volts (kwv yees li ib feem kaum ntawm qhov qub voltage), los ntawm txoj hauj lwm rau pem hauv ntej (firewire access) txog 15cm yog cov hlau (cable) qhov twg breakpoint.
Nrog rau txoj kev kuaj xyuas cov hlau thaiv, yog tias tsuas yog cov tub ntxhais hlau tawg thiab thaiv txheej tsis tawg, ces txoj kev no tsis muaj zog.
Txheej txheem cej luam ntawm digital multimeter
Digital multimeter yog ib qho me me digital multimeter nrog peb thiab ib nrab tus lej LCD zaub. Nws tuaj yeem ntsuas AC thiab DC qhov hluav taws xob thiab AC thiab DC tam sim no, tsis kam, qhov muaj peev xwm, transistor -value, diode ntawm voltage thiab Circuit Court luv, thiab lwm yam, los ntawm kev hloov pauv hloov pauv hloov pauv kev ua haujlwm thiab ntau yam kev ntsuas, tag nrho ntawm 30 lub zog .
Qhov siab tshaj plaws zaub tus nqi ntawm no multimeter yog ± 1999, nws tuaj yeem tso saib "0" thiab polarity, thiab tso saib "1" lossis "-1" thaum overloaded, thiab tso saib "←" thaum lub roj teeb voltage qis dhau lawm. Thaum lub roj teeb voltage tsawg dhau, nws qhia "←" kos npe, thiab luv-circuit check nrog buzzer.
