Uni-Trend UT39A Specifications

TABLE OF CONTENTSTITLE PAGEOverviewUnpacking InspectionSafety InformationRules For Safe OperationInternational Electrical Symbo

Note If the value of voltage to be measured is unknown, use the maximum measurement position (1000V) and reduce the range step by step until

11NotellllIf the value of voltage to be measured is unknown,use the maximum measurement position (750V) andreduce the range step by step until a sat

4. Break the current path to be tested. Connect the red test lead to the more positive side of the break and the black test lead to the more neg

D. AC Current Measurement (see figure 4 with dotted line) WarningNever attempt an in-circuit current measurementwhere the voltage between termina

E. Measuring Resistance (see figure 5) WarningTo avoid damages to the Meter or to the devicesunder test, disconnect circuit power and dischargeal

F. The Model UT39C: Frequency Measurement (see figure 6) WarningTo avoid harm to you or damages to the Meter, donot attempt to measure voltage

G. The Model UT39C: Temperature Measurement (see figure 7) WarningTo avoid harm to you or damages to the Meter, donot attempt to measure vol

17H. Capacitance Measurement (see figure 8)( figure 8) WarningTo avoid damage to the Meter or to the equipmentunder test, disconnect the tested

I. Measuring Diodes & Continuity WarningTo avoid damage to the Meter or to the equipmentunder test, disconnect circuit power and dischargeall

19Testing for ContinuityTo test for continuity, connect the Meter as below:1. Insert the red test lead into VΩ terminal and the black test lead i

242425252526 PAGE I. Diodes and Continuity Test J. Transistor TestMaintenance A. General Service B. Replacing the

NoteWhen transistor measeurement has been completed,remove the transistor from the transistor jack.lSleep ModeTo preserve battery life, the Meter auto

Accuracy SpecificationsAccuracy: (a% reading + b digits), guarantee for 1 year.Operating temperature: 230C 50C.Relative humidity: <75%.Temperatu

C. DC CurrentRange Resolution(2%+5)OverloadProtection0.315A. 250Vfast type fuse, φ 5 x 20mmUn-FusedAccuracyUT39A UT39B UT39C20µA200µA2mA20mA200mA10A/2

E. Resistance TestRange Resolution(0.8%+3)OverloadProtection250V DCor AC rmsAccuracyUT39A UT39B UT39C200Ω2kΩ20kΩ200kΩ2MΩ20MΩ200MΩ0.1Ω1Ω10Ω100Ω1kΩ10kΩ1

H. CapacitanceRange Resolution(4%+3)OverloadProtection250V ACAccuracyUT39A UT39B UT39C1pF0.1nF1nF10nF(4%+3)(4%+3)Remark:Testing signal: approx. 400Hz

25MaintenanceThis section provides basic maintenance informationincluding battery and fuse replacement instruction. WarningDo not attempt to rep

To replace battery:1. Disconnect the connection between the testing leads and the circuit under test, and remove the testing leads away from the

276. Remove the fuse by gently prying one end loose, and then take out the fuse from its bracket.7. Install ONLY replacement fuses with the identi

Copyright 2004 Uni-Trend Group Limited.All rights reserved.Manufacturer:Uni-Trend Technology (Dongguan) LimitedDong Fang Da DaoBei Shan Dong Fang Indu

3Overview WarningTo avoid electric shock or personal injury, read the“Safety Information” and “Rules for Safety Operation”carefully before usi

Safety InformationThis Meter complies with the standards IEC61010: inpollution degree 2, overvoltage category (CAT. I 1000V,CAT. II 600V) and double i

Rules For Safe Operation WarningTo avoid possible electric shock or personal injury,and to avoid possible damage to the Meter or to theequipment

lllllllllcontinuity, diodes, capacitance or current.Before measuring current, check the Meter’s fusesand turn off power to the circuit before connecti

Deficiency of Built-In BatteryAC (Alternating Current)AC or DCDouble InsulatedWarning. Refer to the Operating ManualConforms to Standards of European

ButtonPOWER(Yellow Button)HOLD(Blue Button)Operation PerformedTurn the Meter on and off. Press down the POWER to turn on the Meter. Press up the

9Make sure the Sleep Mode is not on if you found thereis no display on the LCD after turning on the Meter.Make sure the Low Battery Display i