EXTECH MA620 [13/17] Data hold

MA61_MA63-en-GB_V1.0 3/15

NCVNon‐ContactACVoltageDetector

CAUTION:RemovetestleadsfrommeterbeforeattemptingNCVtests.Alwaysverifythe

NCVfunctiononaknownlivecircuitbeforeperformingtests.DonotusetheNCVfunctionifthe

displaydoes not show EF whenthefunction switch isturnedto the NCV position.If the meter

doesnotswitchonwhentheNCVmodeisinitiated,pleasecheckthebatteries.

WiththemeteronandswitchedtotheNCVmode,holdingthefronttipoftheclampjawneara

liveelectrical,electromagnetic,orelectrostatic field causes thebeeperto sound,thedisplayto

shows dashes, and the red LED lamp to flash. The threshold is 100V. The greater the field

strengththegreaterthenumberofdashesandthefastertherateoftheaudiblebeepsandthe

flashingLEDlamp.

Ifthemeterdoesnotemitatoneordisplaydashesinthismode,thereisstillthepossibilitythat

voltageispresent.Pleaseusecaution.

1. Turn the

Function switch to the NCV position to access the Non‐Contact Voltage Detect

mode.

2. NotethevoltagedetectiondisplayiconNCVandthelargerEFdisplay.Ifthesedisplaysare

not seen when the NCV mode is accessed do NOT attempt to use the meter. Check the

batteries and try

 again. If the meter still does not

switch on when the NCV mode is accessed please

havethemeterservicedorreplaced.

3. Place the meter near a source of electrical energy.

The front tip of the clamp offers the highest

sensitivity.

4. Notetheaudiblebeeping,thedashdisplays,

andthe

flashing LED lamp when an electrical or

electromagneticfieldofatleast100Vissensed.Note

that electrostatic energy will trigger the NCV

detector,thisisnormal.

Fig‐10NON‐CONTACTACVOLTAGEDETECTOR



DataHold

TofreezethedisplayedreadingontheLCD,presstheDataHold(H)button(theHiconwill

appearonthedisplay).ToreleasetheDataHoldfunctionandreturnthemetertonormal

operation,presstheDataHold(H)buttonagain(theHiconwillswitchoff).