Model UT90A: OPERATING MANUAL=VC2201Table of ContentsTitle PageOverviewUnpacking InspectionSafety InformationRules For Safe OperationI

Model UT90A: OPERATING MANUAL10To avoid damages to the built-in fuse and theMeter, please do not attempt parallel connectthe test leads with any circu

Model UT90A: OPERATING MANUAL11 completed, disconnect the connection between the test leads and measured circuit.C. Resistance Measurement

Model UT90A: OPERATING MANUAL12precision readings in low-resistancemeasurement, that is the range of 200.0O,short-circuit the input terminals beforeha

Model UT90A: OPERATING MANUAL13To test a diode out of a circuit, connect the Meteras follows:1. Insert the red test lead (anode “+”) into theVO term

Model UT90A: OPERATING MANUAL14disconnect the connection between thetesting leads and the circuit under test.E. Continuity Measurement(see figure 7)Wa

Model UT90A: OPERATING MANUAL15capacitors.l Open-circuit voltage of continuitymeasurement is about 3V.l When continuity testing has beencompleted, d

Model UT90A: OPERATING MANUAL16l The range of 9V only fit for the measure of 9V Battery, inside load resistance is 38O.General Specificationsl M

Model UT90A: OPERATING MANUAL17Accuracy:±(a% reading + b digits), guarantee for 1 year.Operating temperature: 18 - 28? .Relative humidity:=75

Model UT90A: OPERATING MANUAL18C.DC CurrentRange ResolutionAccuracy:±(a% reading +b digits)200mA 0.1µA2mA 1µA20mA 10µA200mA 0.1mA±(0.8%+2)20A 10mA ±(1

Model UT90A: OPERATING MANUAL19 time between two measurements> 15 minutes.E. ResistanceRange ResolutionAccuracy:±(a% reading + bdigits)200O 0.1O2k

Model UT90A: OPERATING MANUAL2OverviewThis Operating Manual covers information onsafety and cautions. Please read the relevantinformation carefully an

Model UT90A: OPERATING MANUAL20 1OOpen circuit voltage isabout 3V; Set theresistance of a opencircuit> 100O, buzzer willnot sound; Set theresistanc

Model UT90A: OPERATING MANUAL21 WarningBefore remove the case bottom, make surethe power is off, remove the test leads fromterminals and test circuit.

Model UT90A: OPERATING MANUAL33 certificate1 pieceIn the event you find any missing or damage,please contact your dealer immediately.Safety Informati

Model UT90A: OPERATING MANUAL4to the following rules:l Before using the Meter inspect thecase. Do not use the Meter if it isdamaged or the case (or

Model UT90A: OPERATING MANUAL5readings.l Remove test leads from the test circuitbefore changeover of range. Turn theMeter power off before connect th

Model UT90A: OPERATING MANUAL6Deficiency of Built-In Battery.Warning. Refer to the OperatingManual.China Technology SupervisionBureau, license for me

Model UT90A: OPERATING MANUAL7Below table indicated for information about therotary switch positions.RotarySwitchPositionFunction VDC voltage measur

Model UT90A: OPERATING MANUAL8ImpedancechangeoverbuttonAC/DCvoltagerangeIt is used to inspectthe resistance ofsupply power under250VMAX.(??????)Anyrot

Model UT90A: OPERATING MANUAL9AC/DC voltage, connect the Meter as follows:1. Insert the red test lead into the“VO)”terminal and the black test lead i