Releasing:
(1)SettheRangeselectorswitchtotheΩ(Continuity)position.
(2)Openthetestleads:LINE(red)andEARTH(black).
(3)PresstheZeroΩ ADJ.
key
toreleasethisfunctionwhen"OL"is
displayedontheLCDwhiletheTestbuttonislockedorthe
Remotecontrolswitchispresseddown.
Measurement:
(1)SettheRangeselectorswitchtotheΩ (Continuity)position.
(2)Connectthetestleadstotheequipmentundertest,andpressthe
TestbuttonorRemotecontrolswitch.
Principleofoperation:
Resistance=Voltage/Current
RX=V/ I
Note:
¡
ThezeroΩ ADJ.functionisavailablewhentheindicatedvalueis
under9Ω.
¡
AbeakinTestleadorfuseissuspectedwhen"OL"isdisplayedon
theLEDevenifLINE(red)andEARTH(black)areshorted.
¡
Changetheconnection of LINE(red)andEARTH (black) when
measuringthevoltagewiththeswitchedpolarities.
¡
Themeasurementresultattheresistancefunctionmaybeeffected
by theimpedanceortransientcurrentintheoperatingcircuit,which
isconnectedinparalleltotheinstrument.
6-6Backlightfunction
Tofacilitateworkingindimlylitsituations,a
backlight function is provided which
illuminatesthe display.Press thebacklight
key
tooperate this function.The backlight
willlightupforabout60sec.,andthenturns
offautomatically.
6-7Auto-power-off
Topreventtheinstrumentbeingleftpoweredonandconservebattery
power,theinstrumentautomaticallyturnsoffapprox.15min.afterthe
lastswitchoperation.
Toturn on the instrumentagain,turn the Range selectorswitchto
OFFpositiononce.
Thensetittothedesiredrange.
―15―
Fig.10
Fig.11