Uni-Trend UT803 Spezifikationen

Model UT803OPERATING MANUAL

8Model UT803: OPERATING MANUALInternational Electrical SymbolsAC or DCGroundingDouble InsulatedWarning. Refer to the Operating ManualDeficiency of Bu

9The Meter Structure (see figure 1)1. LCD Display 2. Rotary Switch3. Input Terminals 4. Functional ButtonsModel UT803:

10Rotary SwitchBelow table indicated for information about the rotary switch positions:AC and DC voltage measurement :Continuity test. :

11Functional ButtonsBelow table indicated for information about the functional button operations.Turn the power on and off.Turn the display backlight

12HOLDhFE MINMAXRS232AC+DC Trus RMSAuto Range ManualTrms0C umVADC munF 0F~mVMk Hz12 10 1 115.6.71421613 3 48915Model UT803: OPERATING MANUALDisplay Sy

13SymbolNumberModel UT803: OPERATING MANUALTrue RMSHOLDACDCAC+DCOL,K ,MA, mA, µAMeaningIndicator for true rms value.Data hold is active.Sleep Mode fea

14SymbolNumberModel UT803: OPERATING MANUALMeaningV : Volts. The unit of voltage.mV: Millivolt.1 x 10-3 or 0.001 volts.F : Farad.The unit of capa

15SymbolNumberModel UT803: OPERATING MANUALAutoRangeManualMeaning1213141516Indicator of Auto or manual rangeDisplay of maximum or minimum value.Data o

16Measurement OperationA. DC or AC Voltage Measurement (See figure 3) WarningTo avoid harms to you or damages to the Meter fromelectric shock, p

4. Press AC/AC+DC button to measure AC+DC voltage’s true RMS.NoteIn each range, the Meter has an input impedance of10M except 600mV range has 3000

B. DC or AC Current Measurement (See figure 4) WarningBefore connect the Meter in serial with the testedreturn circuit, close the return circuit

NoteIf the value of current to be measured is unknown,use the maximum measurement position, and reducethe range step by step until a satisfactory read

C. Measuring Resistance (see figure 5) WarningTo avoid damages to the Meter or to the devices undertest, disconnect circuit power and discharge

21NoteThe test leads and the Meter inside wire will bringaround 0.2 to 0.5 of error to resistancemeasurement when measuring low resistance. Toobtain

D. Testing for Continuity (See figure 6) WarningTo avoid damages to the Meter or to the devices undertest, disconnect circuit power and discharg

NoteOpen circuit voltage around -1.2V and range is 600 .When continuity testing has been completed,disconnect the connection between the testing leads

E. Testing Diodes (See figure 7) WarningTo avoid possible damage to the Meter and to thedevice under test, disconnect circuit power anddischarge

To test a diode out of a circuit, connect the Meter as follows:NoteConnect the test leads to the proper terminals assaid above to avoid error display.

F. Capacitance Measurement (See figure 8) WarningTo avoid damage to the Meter or to the equipmentunder test, disconnect circuit power and discha

NoteThe Meter displays a fixed value which is thedistributed capacitor’s value of the inside Meter. Toensure accuracy, it is necessary to subtract th

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G. Frequency Measurement (see figure 9) WarningTo avoid harms to you, please do not attempt to inputtested frequency’s voltages higher than 30V

29NoteWhen making frequency measurement, it must complywith the following scope (a) requirement:When 10Hz ~ 1Mz :150mV a 30V rmsWhen

30H. Temperature Measurement (see figure 10) WarningTo avoid harms to you, please do not attempt to inputvoltages higher than 60V DC or 30V AC.T

31NoteThe testing environment must between 180C to 280Cto ensure accuracy especially when measuring lowtemperature.Different reading may be obtained w

32I. Measuring Transistor (see figure 11) WarningTo avoid harms to you, please do not attempt to inputvoltages higher than 60V DC or 30V AC.Not

33Operation of Hold Mode WarningTo avoid possibility of electric shock, do not use Holdmode to determine if circuits are without power. TheHold

34Turning on the Display Backlight WarningIn order to avoid the hazard arising from mistakenreadings in insufficient light or poor vision, pleas

35The MAX MIN ButtonMAX MIN recording mode captures and stores themaximum and minimum input value detected.To use the MAX MIN mode as follows:Press MA

36Sleep ModeWhen the Meter display symbol, it automaticallyturns off if you do not turn the rotary switch or pressany button for around 10 minute

37General SpecificationsMaximum Voltage between any Terminals andGrounding: Refer to different range input protection voltage.Fused Protection for

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38Accuracy SpecificationsAccuracy: (a% reading + b digits),guarantee for 1 year.Operating temperature: 230C 50C.Relative humidity: not more than 75

39Model UT803: OPERATING MANUALB. AC VoltageRange Resolution Accuracy Overload Protection40Hz-50kHz: (0.6%+5)>50kHZ-100kHz: (1%+5)40Hz-1kHz: (0.

40Remarks:Input Impedance: At 600mV range : Around > 3000M At all other ranges: Around 10MDisplays: True RMS (applicable to the ran

Remarks:At 5A range: Continuous measurement is allowed.At >5A range: For continuous measurement 10 seconds and interval not less than 15 minut

Remarks:At 5A range: Continuous measurement is allowed.At >5A range : For continuous measurement 10 seconds and interval not less than 15 minut

43(0.8%+3) + test lead shortcircuit resistance value(0.5%+2)(0.8%+2)(1.2%+3)Model UT803: OPERATING MANUALE. ResistanceRange Resolution Accuracy Overlo

44Open circuit voltage approximate -1.2V.When circuit disconnected with resistance value> 70 , buzzer does not beep.When circuit is in good connect

Remarks:At 6nF, 60nF and 600nF Range: reading must subtract the test lead open circuit capacitance value.45Model UT803: OPERATING MANUALH. Capacitanc

Remarks:Input scope (a): (DC electric level is zero)When 10Hz ~ 1MHz : 150mV a 30V rmsWhen > 1MHz ~ 10MHz : 300mV a 30V rmsWhen

Remarks:The included point contact temperature probe can only be used to measure under 2300C temperature. For anymeasurement higher than that, the rod

3OverviewThis Operating Manual covers information on safetyand cautions. Please read the relevant informationcarefully and observe all the Warnings an

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

B. Replacing the Fuses (see figure 12) WarningTo avoid electrical shock or arc blast, or personalinjury or damage to the Meter, use specified fu

Replacement of the fuses is seldom required. Burningof a fuse always results from improper operation.50Model UT803: OPERATING MANUALFuse 4:It is locat

C. Replacing the Battery (see figure 13) WarningTo avoid false readings, which could lead to possibleelectric shock or personal injury, replace

RS232C and USB Serial PortTo use UT803 Interface Program, you need the followinghardware and software:An IBM PC or equivalent computer with 80486 orhi

RS232C Serial PortUT803 Back FaceplateTo COMPUTER53Model UT803: OPERATING MANUALA. Connecting between the Meter and computer (see figure 14)(Figure 1

C. Setting of RS232C Serial PortsDefault of RS232C serial port for communication is set as: Baud Rate 19200 Start bit 1 Stop bit

USB Serial PortUT803 Back FaceplateTo COMPUTERUSB INTERFACE CABLEB. Setting of USB Serial PortsInstall the USB serial port driver according to theInst

56Model UT803: OPERATING MANUALThis operating manual is subject to change without notice. Copyright 2004 Uni-Trend International Limited.All rights

4Unpacking InspectionOpen the package case and take out the Meter. Check the following items carefully to see any missing or damagedpart:Item Descrip

5Safety InformationThis Meter complies with the standards IEC61010: inpollution degree 2, overvoltage category (CAT. I 1000V,CAT.II 600V) and double i

6Rules For Safe Operation WarningTo avoid possible electric shock or personal injury,and to avoid possible damage to the Meter or to theequipmen

7Replace the battery as soon as the battery indicator appears. With a low battery, the Meter mightproduce false readings that can lead to electr