Fortune Multimeter Special Function Application
Analogue Pointer Ib yam li tus pointer ntawm ib qho analogue meter, tab sis tsis muaj ntau tshaj, cov zaub tau hloov kho sai dua thiab yooj yim heev rau qhov siab tshaj plaws thiab xoom calibration thiab rau kev soj ntsuam cov teeb liab hloov sai, thiab yog dav siv rau kev txiav txim siab ceev ntawm voltages, tam sim no. , resistances thiab capacitances.
Cov ntaub ntawv tuav/Trigger Hold/Update Hold (HOLD) Cov ntaub ntawv tuav muaj nuj nqi tso cai rau tus neeg teb xov tooj kom khov tus nqi tso tawm, thaum lub ntsuas ntsuas ntsuas analogue tsis muaj txoj haujlwm no. Trigger Hold yog ib qho haujlwm tseem ceeb ntawm HOLD nyob rau sab saum toj ntawm Cov Ntaub Ntawv tuav kom pom qhov ntsuas qhov ntsuas tshiab. Kev hloov tshiab tuav tuaj yeem qhib tau rau hauv Kev teeb tsa hom (lub neej ntawd yog Trigger Hold), qhov haujlwm no cia li ua rau lossis hloov kho tus nqi tuav nrog tus nqi ntsuas tshiab thiab suab nrov nrov. Lub 'meter' yuav tuav tus nqi ntsuas tshiab thaum ntsuas tus nqi tau hloov dhau qhov kev teeb tsa yuam kev. Zoo heev rau qhov chaw nyuaj.
III.Dynamic Recording (Max/Min/Ave) Dynamic recording mode yog siv los ntes cov surges uas tshwm sim thaum lub sij hawm tsis sib xws hloov ntawm lossis tawm, lossis thaum koj siv cov cuab yeej ua haujlwm thiab tsis tuaj yeem nyeem ntawv, tom qab ntawd lub ntsuas hluav taws xob tuaj yeem sau cov ntaub ntawv. Kev nyeem ntawv nruab nrab yog siv los lim tawm cov khoom tsis ruaj khov lossis sib txawv, los kwv yees qhov feem pua ntawm lub sijhawm ua haujlwm hauv Circuit Court lossis ntsuas qhov ua tau zoo ntawm lub voj voog. Thiab ESCORT-279/278 kuj muaj (Max-Min) zaub los nyeem cov nqi siab tshaj-rau-peak.
kwv tij Zeroing REL txheeb ze Zeroing muaj nuj nqi rho tawm tus nqi khaws cia los ntawm tus nqi tam sim no thiab qhia txog qhov tshwm sim ntawm kev rho tawm Thaum ua kev ntsuas kev tiv thaiv, cov nqi zaub tsis yog xoom vim yog lub zog ntawm cov cwj mem xeem, yog li siv cov txheeb ze Zeroing muaj nuj nqi rau xoom. cov zaub tam sim no. DC voltage ntsuas, vim qhov thermal nyhuv ntawm qhov cuam tshuam ntawm cov zaub tsis yog xoom, luv luv-circuit ntsuas cwj mem, siv cov txheeb ze ua haujlwm kom xoom cov nyhuv thermal.
V. 1ms Peak Hold Qhov kev ua haujlwm no tuaj yeem siv los txheeb xyuas cov khoom xws li cov khoom siv hluav taws xob faib hluav taws xob thiab cov khoom siv hluav taws xob kho cov khoom siv hluav taws xob. Los ntawm kev siv 1ms ncov tuav haujlwm ntawm ESCORT-99/98, nws qhov siab tshaj plaws tuaj yeem suav tau. Peak Factor=Peak/True RMS
VI.FREQUENCY MEASUREMENT Kev ntsuas zaus pab txhawm rau txheeb xyuas qhov muaj kev sib haum xeeb nyob rau hauv nruab nrab tus neeg xyuas pib thiab txiav txim siab seb qhov nruab nrab tam sim no tshwm sim los ntawm cov theem tsis sib npaug lossis cov khoom tsis sib xws.ESCORT-172 txog 34MHz yog qhov ntsuas zaus ntawm koj xaiv.
VII. Harmonic Ratio Measurement Lub harmonic ratio muaj nuj nqi yog xam tus nqi ntawm ib tug bias ntawm {{0}}% thiab 100% thiab yog ib tug parameter uas characterizes harmonics. Lub sine nthwv dej uas yog dawb huv ntawm harmonics muaj qhov sib haum xeeb ntawm 0%, kev sib haum xeeb siab dua txhais tau hais tias muaj ntau qhov sib haum xeeb hauv lub teeb liab. Qhov kev ua haujlwm no yog siv rau kev ntsuas hluav taws xob yooj yim yam tsis tas yuav yuav cov khoom siv ntsuas kev ua haujlwm kim.
Yim, dBm / dBV xeem dBm thiab dBV feem ntau yog siv los ua tus txheeb ze zog tus nqi ntawm lub teeb liab thiab tus txheeb ze voltage tus nqi, tus qauv yog: dBm=10lgP (power value / 1mw). Feem ntau siv nyob rau hauv ib co amplification circuits, xws li suab, hais lus thiab lwm yam electro-acoustic teb xeem.
Cuaj, transistor DC amplification HFE Raws li lub npe qhia, qhov kev ua haujlwm no yog siv los ntsuas DC amplification ntawm transistors, ESCORT-168A multimeter uas daws koj cov kev xav tau.
