Radio Shack 2200813 User manual

2200813
User’s Guide
29-Range Digital Multimeter
Thank you for purchasing your 29-Range
Digital Multimeter from RadioShack. Please
read this user’s guide before installing, setting
up, and using your new multimeter.

2
Contents
Package Contents ...................................3
Features....................................................3
Care and Service ......................................3
Safety Precautions....................................4
Special Panel Markings ............................7
Install the Batteries...................................8
Connect the Test Leads............................8
Basic Operation....................................9
Selecting Ranges......................................9
Measuring DC/AC Voltage.....................10
Measuring AC Voltage Riding on a DC
Source Bias .............................................11
Measuring DC/AC Current.....................12
Measuring Resistance.............................13
Checking Continuity...............................14
Checking Diodes ....................................14
Checking Batteries .................................16
Additional Information .......................18
Replacing the Fuse.................................18
Auto Power Off ......................................19
Testing the Display .................................19
Specifications..........................................20
Limited Warranty ....................................22

3
Package Contents
• 29-RangeDigitalMultimeter • TestLeads(2)
• SpareFuse(inthecase)   • User’sGuide
Features
• Measures voltage, current and resistance
• Auto-ranging with manual-ranging override
• Diode test
Care and Service
• Keep your meter dry and clean. If it gets wet or dirty, wipe it dry or clean immediately
with a cloth lightly dampened with water. Do not use harsh chemicals, cleaning solvents,
or strong detergents to clean the meter.
• Useandstorethemeterinnormaltemperatureenvironmentsonly.Handleyourmeter
carefully. Do not drop it.
• Modifying or tampering the meter’s internal components can cause malfunction and
might invalidate its warranty. If your meter is not performing as it should, take it to your
local RadioShack store for assistance.

4
Safety Precautions
• Do not use the meter if you are unfamiliar with electric circuits and testing procedures.
• To avoid electric shock, disconnect both test leads from the circuit under testing before
you replace the batteries and fuse.
• Do not operate the meter until the batteries are properly installed and the back cover
and battery compartment cover are in place and secured.
• Useextremecautionwhenworkingwithvoltagesabove30VRMSand42.4Vpeakor60V
DC. Always disconnect power from the circuit you are measuring before you connect test
leads to high-voltage points.
• Never connect to a voltage source when you select the diode check, continuity function,
resistance measurement, or any of the battery test or current measurement functions.
• Always discharge any capacitors of the circuit under test before you attach test leads and
always turn off power and disconnect the test leads from the circuit before replacing the
meter’s batteries or the fuse.
• Because many AC/DC sets have a potentially hot chassis, be sure the top of your
workbench and the floor underneath it are made of nonconductive materials.
• If you connect one test lead to a hot wire first and touch the other test lead tip, you
could receive an electric shock.

5
• Thetestleads(blackandred)suppliedwithyourmeterareratedfor1000voltsbutdo
nottrytomeasureanyvoltagegreaterthan600voltsDC/600voltsRMSAC.Useonly
test leads of the same rating as the meter.
• Your multimeter is designed primarily to measure household AC voltages. Because of
the dangers inherent in measuring three-phase circuits, WESTRONGLYRECOMMEND
YOUDONOTUSETHISMETERTOMEASURE3-PHASE,LINE-TO-LINEVOLTAGE.
If you still want to, put on protective clothing – a face shield and fireproof gloves and
upper body protection is required before measuring. If you do not have this protection,
DONOTMEASURETHESECIRCUITS.
• Toreducetheriskofreorshockhazard,donotexposethisproducttorainormoisture.
For indoor use only.
• If this equipment is used in a manner not specified by the manufacturer, the protection
provided by the equipment may be impaired.
• Forthemostaccuratereading,thetemperatureshouldbebetween65°Fand83°F(18°C
to28°C),withamaximumof75%relativehumidity.

6
Range – Press to select ranges.
AUTO – Auto range mode.
SELECT – Toggle measurement options within a function.
HOLD – Press to hold all indications on the display.
Function/Power dial
Turn the meter on/off or select the type of measurement:
•V – Measures DC/AC voltage.
•mA/A – Measures amperage: DC40/400mAandAC
40/400mA;DC4/10AandAC4/10A
• Ω– Measures resistance and checks continuity/
diodes.
•AA/C/D, AAA, 9V – Test specific battery types.
Bar Graph Display –8segmentsrepresentunitsforthe
selected function.

7
Setup
Special Panel Markings
Themaximumvoltagethatthismetercanmeasureis600VRMSACor600V
DC. To avoid electric shock and damage to the meter, do not connect the
twoinputterminals(-COM and +V.Ω.mA)toanysourcethatexceeds600
volts with respect to ground.
400mA
MAX
Themaximumcurrentthatthismetercanmeasureatthisjackis400mADCor
AC.
Caution: RISKOFELECTRICSHOCK!Refertothecompleteoperating
instructions.
Caution: Beextremelycarefulwhentakinghigh-voltagemeasurements.DO
NOTTOUCHTERMINALSORTESTLEADENDS.
CAT II ThisequipmentisratedforinstallationcategoryII(3600VAmax.).
10A MAX.
UNFUSED
Themaximumcurrentyoucanmeasureatthisjackis10ampsDC/AC.This
jackisnotfuse-protected.
The meter is protected by double insulation.
nNote: The UL mark does not indicate that this product has been evaluated by
Underwriters Laboratories for the accuracy of its readings.
600V
MAX

8
Setup
Install the Batteries
Before installing batteries, turn off the multimeter and disconnect the
testleads.InstallthreeAAAbatteries(notincluded),matchingthe
polaritysymbols(+and-)markedinside.When appears, replace
the batteries.
• Disposeofbatteriespromptlyandproperly.Donotburnorbury
them.
• Useonlyfreshbatteriesoftherequiredsizeandtype.
• Ifyoudonotplantousethemeterforamonthormore,remove
the batteries. Batteries can leak chemicals that can damage electronic parts.
Connect the Test Leads
1. Remove the rubber caps from the test leads.
2. Plug the black lead into the –COM jackandthe
red lead into the +V.Ω.mAjack.Tomeasurecurrent
greaterthan400mA,plugtheredtestleadinto
+10A MAX.
nNote: After connecting to the +10A MAXjacktomeasureanythingexceptcurrent,a
buzzerremindsyounottotouchthetestleadstothecircuit.

9
Operation
Range Display
400mV ddd.d mV
4V d.ddd V
40V dd.dd V
400V ddd.d V
600V ddd V
40mA dd.dd mA
400mA ddd.d mA
4A d.ddd A
10A dd.dd A
400Ωddd.d Ω
4kΩd.ddd kΩ
40kΩdd.dd kΩ
400kΩddd.d kΩ
4MΩd.ddd MΩ
40MΩdd.dd MΩ
“d” denotes any digit from
0to9.
Basic Operation
Selecting Ranges
Setthemetertoameasurementrange;theunitofmeasure
appearsonthedisplay.Forexample,mVappearsinthe400
mVrange.
Note the position of the decimal:
• If0.000Vappears,themeterissettomeasurelessthan
4volts.
• If000Vappears,themeterissettomeasureupto600
volts.
Read the range in volts, amps, or ohms as indicated by the
position of the decimal point.

10
Operation
wCaution:
• IfyouaremeasuringvoltageorcurrentwhenOF(overow)appears,immediately
disconnect the test leads from the circuit.
• Whenmeasuringhigh-voltagecircuits,donotpositionbothtestleadsatonce.Connect
theblacktestleadrsttothecircuit’sneutralorgroundlead.Then,usingonehand,
probe for voltages with the other test lead. This helps prevent accidentally touching a
hot wire.
Measuring DC/AC Voltage
DONOTtrytomeasurevoltagesabove600VDC/AC(RMS).
1. Set the function dial to V.
2. Press SELECT to select DC or AC. appears for AC voltage measurement.
3. Touch the black test lead to the circuit.
4. Touch the red test lead to the circuit.
If the meter is set to manual range and you measure an overrange input, OF will display. The
meter will return to standby mode when you remove the input.