Product Manual

FLIRCM72_CM74USERMANUALDocumentIdentifier:CM72_CM74‐en‐US_AA
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5.4.4.2DCAZeroMode(CM74only)
TheDCzerofeatureremovesoffsetvaluesandimprovestheaccuracyforDCcurrent
measurements.
1. Ensurethatthereisnoconductorintheclampjaws.
2.
PresstheDCAZerobutton toenableDCZero.Thedisplaywillzero.
5.4.4.3FrequencyMode
InFrequencymode,themetermeasuresanddisplaysthefrequency.Frequencymodeis
availablewhenmeasuringACcurrentorvoltage.
Importantnote:DonotswitchtotheFrequencymodeuntilthemeterissetupand
activelymeasuringthevoltageorcurrentsignal.
PressandholdtheMODEbuttontoselect
andenableFrequencymode.
5.4.4.4MIN/MAXMode
InMIN/MAXmode,themetercapturesanddisplaystheMinimumandMaximumreadings
andupdatesonlywhenahigher/lowervalueisregistered.
1. PressandholdtheHOLDbuttontoaccesstheMIN/MAXmode.
2.
ThefirstscreenwillbetheMINscreen.Thedownarrow willappear(indicating
MINmode)andthedisplayedreadingwillrepresentthelowestreadingencountered
sincetheHOLDbuttonwasfirstpressed.
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3.
PresstheHOLDbuttonagain;thisnextscreenwillbetheMAXdisplay.Theuparrow
willappear(indicatingMAXmode)andthedisplayedreadingwillrepresentthe
highestreadingencounteredsincetheHOLDbuttonwasfirstpressed.
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4.
ContinuetousetheHOLDbuttontotoggletheMIN/MAXreadingsasdesired.
5.
PressandholdtheHOLDbuttonfor2secondstoexittheMIN/MAXmode.Themeter
willreturntonormaloperationandtheMIN/MAXmemorieswillbereset.
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5.4.4.5VFDMode(lowpassfilter)CM74only
TheVFDmodeeliminateshighfrequencynoiseinvoltagemeasurementsbymeansofa
low‐passfilter.TheVFDmodeisdesignedforvariablefrequencydrive(VFD)
measurements.ThismodeisalwaysactiveforACmeasurements.TheVFDdisplayiconis
alwaysdisplayed whenACCurrentorACVoltagemodesareselected.
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