Extech Instruments AN340 Manual

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AN340-EU-EN V1.3 4/13

LCDbacklight

Whenanybuttonispressed,theLCDbacklightingswitchesonfor10secondsandthenswitches

OFFautomatically.

DataHOLD

1. PresstheHOLDbuttoninthenormaloperatingmodetofreezethecurrentmeasurement.

2. The‘HOLD’iconwillappearontheLCDdisplay.

3. PressHOLDagaintoreturntonormaloperation.The‘HOLD’iconwillswitchOFFandthe

meterwillreturntodisplayingreadingsinrealtime.



AVG‐MAX‐MINMode

TheAVG‐MAX‐MINfeaturerecordsthehighest(MAX),lowest(MIN),andaverage(AVG)

readingsforeasyrecall.ThemeterbeginsrecordingAVG‐MAX‐MINvalueswhentheAVG‐MAX‐

MINmodeisstarted.Thelowerdisplaylineindicatestheelapsedtimeofthesessionin

HH:MM:SS(hours,minutes,andseconds)

1. PresstheAVG/MAX/MINbuttonmomentarily.TheelapsedtimerwillstartandtheMIN

valuewilldisplay.The‘MIN’iconwillswitchONindicatingthatthereadingshownisthe

minimumreadingencounteredsincethemodewasaccessed.

2. PressAVG/MAX/MINagaintodisplaythemaximumreadingencountered.The‘MAX’

icon

willappearontheLCDandthereadingdisplayedindicatesthehighestreadingencountered.

3. PressAVG/MAX/MINagaintodisplaytheaverageofallreadingencountered.The‘AVG’icon

willappearontheLCD.

4. PressAVG/MAX/MINagainandthedisplaywillreturntodisplayingrealtimereadings.The

meterwillcontinuemonitoringAVG‐MAX‐MINvaluesforthecurrentsessionandwill

continuetodosountilthesessionisstoppedbytheuser.

5. Tostoptherecordingsession,presstheESCbuttonmomentarily.Theelapsedtime

indicationwillswitchoffandthelowerdisplaydigitswillreturn

todisplayingthecurrent

dateandtime(the‘AVG,‘MAX’,and‘MIN’iconswillswitchOFF).

6. NotethatduringanAVG‐MAX‐MINrecordingsession,theMODEbuttoncanbeused,asit

normallyis,tostepthroughthedisplayedmeasurementtypes.

7. AlsonotethattheHOLDandMANUALRECORDmodesofoperationaredisabledduringan

AVG‐MAX‐MINsession.

