User guide

8 TM500-EU-EN v1.1 12/13
switchedon(whentheMAX‐MINbuttonwasfirstpressed).TodeletetheMAXvalue,press
theHOLDbutton.ThedisplaywillshowjusttheRECicon.
4. PresstheRECbuttonagain toviewthecurrentMINreadings(MINiconappears).The
readingsonthedisplayarenowthelowest
readingsencounteredsincetheRECiconwas
switchedon(whentheMAX‐MINbuttonwasfirstpressed).TodeletetheMINvalue,press
theHOLDbutton.ThedisplaywillshowjusttheRECicon.
5. ToexittheMAX‐MINmode,pressandholdtheRECbuttonforatleast
1.5seconds.The
meterwillbeep,theREC‐MAX‐MINiconswillswitchoff,theMAX‐MINmemorywillclear,
andthemeterwillreturntothenormaloperatingmode.
DisplayBacklight
ToturnthedisplaybacklightONorOFF,pressthebacklight buttonmomentarily.Themeter
willbeepwhenswitchingthebacklightONorOFFunlessthebeeperisdisabledasdescribedin
theSetupModesectionofthisuserguide.
TimeCheck
MomentarilypresstheSETbuttonandthemeterscurrentDateandTimewillappearinthe
lowerleftcornerofthedisplay.
SamplingTimeCheck
Wheninnormalmode,presstheLOGGERbuttonmomentarily.TheSampleratesettingwill
appearinthelowerleftcornerofthedisplay.
RS‐232/USBPCInterface
ForstreamingofdatatoaPCviatheRS232Outputjack,theoptional407001‐USBkit(USBcable
anddriverCD)alongwiththe407001software(availablefreeatwww.extech.com)arerequired.
ACPowerAdaptor
Thismeterisnormallypoweredbyeight(8)1.5V‘AA’batteries.Anoptional9Vpoweradaptoris
available.Whentheadaptorisused,themeterispermanentlypoweredandthepowerbutton
willbedisabled.
