User Manual

LT300-EU-EN V2.3 2/13

PeakHold

ThePeakHoldfeatureallowsthemetertocaptureslightpulsesthatriseorfalldownto10µs.

1. PressandholdthePEAKbuttonuntilCALappearsinthedisplay.

2. MomentarilypressthePEAKbutton.The‘PMAX’iconwillappearontheLCD.Themeterwill

thenmeasure

anddisplayanylightpulses.Thedisplaywillholdtheresultsuntilahigher

pulseappears.

3. PressthePEAKbuttonagaintodisplaythe“PMIN”values.

4. ToexitthePeakHoldmode,pressandholdthePEAKbuttonuntilthe‘PMAX’or‘PMIN’icon

disappears.

Relativemode

Measurementscanbedisplayedasadifferencebetweenthemeasuredlightlevelandastored

referencevalue.Tostoreareadingasareference,presstheRELbuttonwhenthedesired

referencemeasurementisontheLCD(theRELiconwillswitchon).Allsubsequentdisplayed

readingswillbe“relative”tothestoredreferencevalue.Forexample,ifthereferencevalueis

100andtheactuallightlevelis125,themeterwilldisplay25.Toviewthereferencevalue,press

theRELbuttonagainsothattheRELiconbeginstoflash. The displayedvaluewillbethe

referencevalue.ToexittheRelativemode,pressandholdtheRELbuttonuntiltheRELicon

disappears.

RESET

PresstheRESETbuttontoclearthememoryandexitfromREL,HOLD,PEAKandMAX/MIN.The

RESETwillalsoresettheautopowerofftimer.

Backlight

Pressthe““buttontoturnthebacklighton.Pressagaintoturnitoff.