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77/75/23/21 English Instruction Sheet

Page

77/75/23/21

Series III Multimeter

Instruction Sheet

W Read First: Safety Information

• Never use the meter if the meter or test leads look damaged.

• Be sure the test leads and switch are in the correct position for

the desired measurement.

• Never measure resistance in a circuit when power is applied.

• Never touch the probes to a voltage source when the test

leads are plugged into the 10 A or 300 mA input jack.

• Never apply more than the rated voltage between any input

jack and earth ground.

• Be careful when working with voltages above 60 V dc or 30 V

ac rms. Such voltages pose a shock hazard.

• Keep your fingers behind the finger guards on the test probes

when making measurements.

WWarning

To avoid false readings, which could lead to

possible electric shock or personal injury, replace

the battery as soon as the battery indicator (M)

appears.

Symbols

Read First: Safety Information

Dangerous Voltage May Be Present

Double Insulation

Overvoltage Installation Category per IEC 1010:

CAT II

CAT III

Typical locations include; main wall outlets,

local appliances, and portable equipment.

Typical locations include switches in the fixed

installation and equipment for industrial use

permanently connected to the fixed installation.

PN 650512 August 1997 Rev.2, 7/98

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All product names are trademarks of their respective companies

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Indice de contenidos

Pagina 1 - 77/75/23/21

77/75/23/21 English Instruction SheetPage 1®77/75/23/21Series III MultimeterInstruction SheetW Read First: Safety Information• Never use the meter if

Pagina 2 - Momentary

77/75/23/21 English Instruction SheetPage 10Electromagnetic CompatibilityIn RF field of 3 V/m on allfunctions.Total accuracy = Specified accuracy+ 0.1

Pagina 3 - W Warning

77/75/23/21 English Instruction SheetPage 11Function Range AccuracyL3.200 V, 32.00 V, 320.0 V600 V (21/75), 1000 V (23/77)±(0.3%+1)±(0.4%+1)mL320.0 mV

Pagina 4 - Resistance

77/75/23/21 English Instruction SheetPage 12Overload protection for all functions and ranges: Rated voltage.Function Input Impedance (Nominal)L, mL, K

Pagina 5 - Diode Test

77/75/23/21 English Instruction SheetPage 2Input JacksV600V1000VFUSEDCAT CAT Volts, Ohms, Diode TestCommon TerminalAmpMilliamphc1f.epsSee Specificat

Pagina 6

77/75/23/21 English Instruction SheetPage 3Automatic Touch Hold ModeW WarningTo avoid electric shock, do not use the Touch Holdmode to determine if

Pagina 7 - Maintenance

77/75/23/21 English Instruction SheetPage 4StandbyIf the meter is on but is inactive for an hour (20 minutes in diodetest), the display goes blank and

Pagina 8 - Battery Replacement

77/75/23/21 English Instruction SheetPage 5Diode Test (G)RANGECAT +__Forward BiasSingle BeepRANGECAT CAT +Reverse Bias_RANGECAT CAT +ShortedOpena

Pagina 9 - Service and Parts

77/75/23/21 English Instruction SheetPage 6Continuity Test ( R )RANGECAT CAT +_RANGECAT CAT +_hc8f.epsIf continuity exists (resistance < 210 Ω

Pagina 10

77/75/23/21 English Instruction SheetPage 7Probe Holderhc14f.epsMaintenanceW WarningTo avoid electric shock, remove the test leadsbefore opening the c

Pagina 11

77/75/23/21 English Instruction SheetPage 8Battery ReplacementNoteBefore opening the case, make sure the test leads areremoved and the rotary switch

Pagina 12

77/75/23/21 English Instruction SheetPage 9Service and PartsTo contact Fluke, call one of the following telephone numbers:USA and Canada: 1-888-99-FL