Extech Instruments GX900 Manual

A SERVICE OF

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ExtechInstruments

27 GX900-EU-EN V1.6 4/14

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MINIMUM(MIN)ANDMAXIMUM(MAX)READINGS

The MIN‐MAX recording mode captures minimum,

maximum,andaveragemeasurementvalues.Whenthe

measurementfallsbelowtherecordedminimumvalue

or above the recorded maximum value, the meter

beepsandrecordsthenewvalue.

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Themeterstorestheelapsedtimesincetherecording

session was started at the same time. The MIN‐MAX

modealsocalculatesanaverageofallreadingstakensincetheMIN‐MAXmodewas

activated.Averagemode isuseful forcapturing intermittentreadings andrecording

readingswhileequipmentoperationprecludeswatching

themeter.

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TheMIN‐MAXmodeisusefulwhenrecordingpowersupplysurges,in‐rushcurrents,

andfindingintermittentfailures.Responsetimeisthelengthoftimean inputmust

remainatanewvaluetobecapturedasapossiblenewminimumormaximumvalued.

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ToactivatetheMIN‐MAXmode,presstheMIN‐MAXbutton;thedisplaywillindicate

theMIN‐MAXvaluesatthetopofthemeasurementpage.Thestartdateandtimeare

indicated at the bottom of the measurement page. In addition, the re corded MIN‐

MAX‐AVGvaluesappearinthe

secondarydisplaywiththeirrespectiveelapsedtimers.

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To stop a MIN‐MAX recording session press the key labeled STOP. The summary

informationin thedisplayfreezes andthekeys changefunction toallowsavingthe

collecteddata.Pressthekeylabeled‘CLOSE’todiscardthecollecteddataandreturn

tothenormaloperatingmode.

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TosavetheMIN‐MAXscreendata,th eMIN‐MAXsessionmustbeendedbypressing

thekeylabeledSTOP.AfterpressingSTOP,pressthekeylabeledSAVE.Adialoguebox

willopenpromptingforafilename(anameisautomaticallyproposedwhichcanbe

acceptedorchangedbytheuser).

PressthekeylabeledSAVE.Pressthekeylabeled

RESTARTwhileMIN‐MAXisrunningstopstheMIN‐MAXsession,discardsallMIN‐MAX

data,andstartsanewMIN‐MAXrecordingsession.