Mastech M840D Operation Manual Download | Manualshive

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Summary of Contents for M840D

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Page 2: ...e display Automatic negative planty indication Tü 3 Ci pf y d tten fie battery voltage drops below the operating voltage 6 Futlt g aúer bad Protedion Vi c p f ánte mea urelnentAut Zeroip s AutoPowsrotr ltwillbeautomati llyctJtoffinaboutlSminutes afier üTe porruer li turned on ti neds to be tt rned off and tt med on again to iontinue the pouÉf rnt e 9 Oper ting ternprature 9 9 40 C ry5f R H SoÉge t...

Page 3: ...M8süü I M8s0F lMts0G DTg3CIF I M1000 S0m tlO 5Yo 3 t 0 1 2V 0 8 2 0 2 2 28V 200v 1 000v r 0 3 0 20Á 5 lnptf impedanffi 1üM on allrang Frequency rangs 40 400H2 2 B fr leasuring vcttage drap 0ümV Measuring voltage drop Zü mV Frqquency range 40 400H2 ...

Page 4: ...DCV 2OOmV V SHM COM 250VnC A V 20ümV 25OVAC DCV 2 1000V 1 000vDt ACV 2 750V 750VAC OHM V OHM COM 2S0V DCrAC Frec VIOHM Hz COM Diode VfOHM COM DCA 200m4 A COM 200m4 DCfAC ACA 2ü0mA DCA 2A 2A DC AC ATA 2A DCA 2OA 204 coM 20A DCIAC 3 lnspec t tlrc test leads for darnaged lnsulation or expo ed rnetal Chmktest lead mntinuity Damaged leads should be replaced 4 elect the proper func tion and range for yo...

Page 5: ...to CCIM terminal and red te t lead to tre VIOHM input tenninal 3 Conned test leads to measuring point and read the display value üre polarfu of üre red lead mnnedion will be indicated at the sarne t me ii the vofhge Noüe a b c Never try to measure the voltage above 1000v1 Alfrough he indication is pssible t 0 show there is a danger of darnaging the internalcircuitry 5 2 DGA ACA MEASUREMENT 1 Connm...

Page 6: ...y value Note The plarity of üre red test lead i When fre input is not mnnected i e at CIpen circuit the figure 1 uill be displayed for the over range condition lf tt re resistane value being measurcd exmds the rnaximum value of the range selected an over range indicaüon 1 will be displayed and function range swthlr should h set to a higher range 00Mfi range has a 10 db ts 1Mn mnstant fte figure wi...

Page 7: ...splayed automatically urten th i thennqmuple is put intrr the testing holes The sunounding temperature is shown when he cirsilt of the i sensor is tx t off The limit temperature measured by the thermomupb given together wtth the instrurnent is 250 C 300 C is amptable i within sho p riod i s I DIODE CONIINUITY TEST I tl etthe fundion range swftch atthe F position i Zl Conned fre black test lead to ...

Page 8: ...sert the battery into the case top Dress fie battery leads so that fiey will not be pinched betr rreen ffre case hottorn and i case top 4 The meter is protected fast tuse 0 5Atr50V mdel M840D proteded fuse 2A 5 V onlyi dirnensions is 05 0mm 5 Replace the mse bottom and reinshll üre three crevte operate fie rneter unless the case bottom is fully ds ed AWARRAI TYA Warrants this instrument to be free...

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