Circuit-test DMR-602 User manual

USER'S MANUAL
Multimeter
Auto ranging Pocket DMM
DMR-602
CIRCUIT-TEST ELECTRONICS
www.circuittest.com
Safety
International Safety Symbols
 Thissymbol,adjacenttoanothersymbolorterminal,indicatestheuser
mustrefertothemanualforfurtherinformation.
 This symbol, adjacent to a terminal, indicates that, under normal use,
hazardousvoltagesmaybepresent.
 Doubleinsulation
Features
• 3-3/4digit4000countLCDdisplay
• Built-innon-contactACvoltagedetector
• Flashlight
• DoubleMoldedhousing
• CATIV600V
• 200mA/500VResettableFusedcurrentinputsand
• Overloadprotectiononallranges
• Autorangingwithautopoweroff
Safety Precautions

Thismeterhasbeendesignedforsafeuse,butmustbeoperatedwithcaution.The
ruleslistedbelowmustbecarefullyfollowedforsafeoperation.
1. Donotexceedthemaximumratedinputlimits.
2. USE EXTREME CAUTIONwhenworkingwithvoltagesgreaterthan25VAC
rmsor35VDC.Thesevoltagesareconsideredashockhazard.
3. DO NOTmeasurevoltageifthevoltageonthe“COM”inputjackexceeds600V
aboveearthground.
4. ALWAYSdischargecapacitorsandremovepowerfromthedeviceundertest
beforeperformingDiode,ResistanceorContinuitytests.
5. NEVERconnectthemeterleadsacrossavoltagesourcewhenthefunction
switchisinthecurrent,resistanceordiodemode.
6. ALWAYSturnoffthemeteranddisconnectthetestleadsfromthecircuitbefore
openingthecovertoreplacebattery.
7. ONLYoperatethemeterwiththebatterycoverfastenedsecurely.
Input Limits
Function Maximum Input
VDCorVAC 600VDC/AC
µAAC/DC 200mA/500V(fastactingresettablefuse)
Resistance,Diode&
ContinuityTest 600VDC/AC
Meter Description
1. Non-contactACvoltagedetectorprobetip
2. Non-contactACvoltageindicatorlight
3. 33/4Digit(4000count)
4. MODEbutton
5. Functionswitch
6. Flashlight
7. Flashlightbutton
8. Hz/%DutyCyclebutton
9. BatteryCover
10. Testleads
Specications
Function Range & Resolution Accuracy
DCVoltage 400mV,4.000V,40.00V ±(0.8%rdg+2digits)
400.0V,600V ±(1.0%rdg+2digits)
ACVoltage
50-60Hz
4.000V,40.00V ±(1.0%rdg+5digits)
400.0V,600V ±(1.5%rdg+5digits)
DCCurrent 400.0µA,4000µA ±(2.0%rdg+2digits)
40.00mA,200.0mA
ACCurrent
50-60Hz
400.0µA,4000µA ±(2.5%rdg+5digits)
40.00mA,200.0mA
Resistance
400.0Ω ±(0.8%rdg+5digits)
4.000kΩ, ±(1.2%rdg+5digits)
40.00kΩ,400.0kΩ ±(0.8%rdg+2digits)
4.000MΩ ±(0.3%rdg+5digits)
40.00MΩ ±(5.0%rdg+5digits)
Capacitance
4.000nF ±(5.0%rdg+0.6nF)
40.00nF ±(3.5%rdg+30digits)
400.0nF,4.000µF ±(3.0%rdg+20digits)
40.00µF,200.0µF ±(5.0%rdg+30digits)
Frequency 9.999Hz,99.999Hz,999.9Hz,
9.999kHz, ±(1.0%rdg+2digits)
DutyCycle 0.5-99% ±(2.0%rdg+5digits)
Non-Contact Voltage 100to600VAC;50/60Hz
Diode Test Testcurrent1mA,opencircuitvoltageof1.5VDCtypical
Continuity Check Audiblesignaliftheresistanceis<100Ω
Display 4000count3-3/4digitLCD
Over range indication “OL”isdisplayed
Polarity Automatic;(-)signfornegativepolarity.
Low Battery Indication symbolindicateslowbatterycondition.
Input Impedance >7.5MΩ(VDC&VAC)
AC Response Averageresponding
ACV Bandwidth 50Hzto60Hz
Auto Power Off 15minutes(approximately)
Fuse mA,µAranges;0.2A/500Vfastacting(resettablefuse)
Batteries Two1.5VAAA
Operating Temperature 32ºFto104ºF(0ºCto40ºC)
Storage Temperature 14ºFto122ºF(-10ºCto50ºC)
Weight 0.319lb(145g)
Size 104x55x32.5mm(4.09”x2.1”x1.2”)
Safety / Approvals ThismeterisULandCULapprovedandconformsto
 IEC61010-1forOvervoltageCategoryCATIV600V.
Note: Accuracyspecicationsconsistoftwoelements:
•(%reading)Thisistheaccuracyofthemeasurementcircuit
•(+digits)Thisistheaccuracyoftheanalogtodigitalconverter
Accuracyisstatedat65ºFto83ºF(18ºCto28ºC)<75%RH

Operating Instructions
WARNING: Riskofelectrocution.High-voltagecircuits,bothACandDC,arevery
dangerousandshouldbemeasuredwithgreatcare.
1. ALWAYSturnthefunctionswitchtotheOFFpositionwhenthemeterisnotin
use.ThismeterautomaticallyshutsOFFafter15minutesofinactivity.
2. If“OL”appearsinthedisplayduringameasurement,thevalueexceedsthe
rangeyouhaveselected.Changetoahigherrange.
NOTE: OnsomelowACandDCvoltageranges,withthetestleadsnotconnectedtoa
device,thedisplaymayshowarandom,changingreading.Thisisnormalandiscaused
bythehigh-inputsensitivity.Thereadingwillstabilizeandgiveapropermeasurement
whenconnectedtoacircuit.
AC/DC VOLTAGE MEASUREMENTS
CAUTION: Do not measureAC/ DC voltages if a motor on the circuit is being
switchedONorOFF.Largevoltagesurgesmayoccurthatcandamagethemeter.
1. Setthefunctionswitchtothe position.
2. PresstheMODEbuttontoindicate“DC”or“AC”onthedisplay.
3. Touchtheblacktestprobetiptothenegativesideofthecircuit.Touchthered
testprobetiptothepositivesideofthecircuit.
4. Readthevoltageinthedisplay.
AC/DC CURRENT MEASUREMENTS
1. Forcurrentmeasurementsupto4000μAC/DC,setthefunctionswitchtothe
position.
2. Forcurrentmeasurementsupto200mAAC/DC,setthefunctionswitchtothe
position.
3. PresstheMODEbuttontoindicate“AC”or“DC”onthedisplay.
4. Removepowerfromthecircuitundertest,thenopenupthecircuitatthepoint
whereyouwishtomeasurecurrent.
5. Touchtheblacktestprobetiptothenegativesideofthecircuit.Touchthered
testprobetiptothepositivesideofthecircuit.
6. Applypowertothecircuitandreadthecurrentinthedisplay.
RESISTANCE MEASUREMENTS
WARNING: Toavoidelectricshock,disconnectpowertotheunitundertestand
dischargeallcapacitorsbeforetakinganyresistancemeasurements.Removethe
batteriesandunplugthelinecords.
1. SetthefunctionswitchtotheΩ   position.
2. PresstheMODEbuttontoindicateΩonthedisplay.
3. Touchthetestprobetipsacrossthecircuitorpartundertest.Itisbesttodis-
connectonesideofthepartundertestsotherestofthecircuitwillnotinterfere
withtheresistancereading.
4. Readtheresistanceinthedisplay.
CONTINUITY CHECK
WARNING: Toavoidelectricshock,nevermeasurecontinuityoncircuitsorwires
thathavevoltageonthem.
1. SetthefunctionswitchtotheΩ   position.
2. PresstheMODEbuttontoindicate onthedisplay
DIODE TEST
1. SetthefunctionswitchtotheΩ   position.
2. PresstheMODEbuttontoindicate onthedisplay
3. Touchthetestprobestothediodeundertest.Forwardvoltagewilltypically
indicate0.400to0.700V.Reversevoltagewillindicate“OL”.Shorteddevices
willindicatenear0Vandanopendevicewillindicate“OL”inbothpolarities
CAPACITANCE MEASUREMENTS
WARNING: Toavoidelectricshock,disconnectpowertotheunitundertestand
dischargeallcapacitors beforetakinganycapacitance measurements.Remove
thebatteriesandunplugthelinecords.
1. SetthefunctionswitchtotheΩ   position.
2. PresstheMODEbuttontoindicatenFonthedisplay.
3. Touchthetestleadstothecapacitortobetested.
4. Readthecapacitancevalueonthedisplay.
FREQUENCY/DUTY CYCLE MEASUREMENTS
1. Setthefunctionswitchtothe /HZ/%position.
2. PresstheHz/%buttontodisplayHz onthedisplay.
3. Touchthetestprobetipstothecircuitundertest.
4. Readthefrequencyonthedisplay.
5. PresstheHz/%buttonagaintodisplay %onthedisplay.
6. Touchthetestprobetipstothecircuitundertest.
7. Readthe%dutycycleonthedisplay.
NON-CONTACT AC VOLTAGE MEASUREMENT
WARNING: Riskofelectrocution.Beforeuse,alwaystesttheVoltageDetectoron
aknownlivecircuittoverifyproperoperation.
1. Bringtheprobetipnexttothehotconductororinsertintothehotsideofthe
electricaloutlet.
2. IfACvoltageispresent,thedetectorlightwillilluminate.
TheVoltageDetectorworkswiththefunctionswitchinanypositionincludingOFF.
NOTE:  Theconductorsinelectricalcordsetsareoftentwisted.Forbestresults,
rubtheprobetipalong a lengthofthecordtoassure placing thetipin
closeproximitytotheliveconductor.
NOTE:  Thedetector isdesigned with high sensitivity.Static electricityor other
sourcesofenergymayrandomlytripthesensor.Thisisnormaloperation
FLASHLIGHT
Pressandholdthe buttontoturntheashlighton.Releasethebuttontoturnthe
ashlightoff.
AUTO POWER OFF
Theautoofffeaturewillturnthemeteroffafter15minutes.
Maintenance
REPLACING THE BATTERY
WARNING: Toavoidelectricshock,disconnectthetestleadsfromanysourceof
voltagebeforeremovingthebatterydoor.
1. willappearinthedisplaywhenthebatterydropsbelowtheoperatingvoltage
andrequiresreplacing.
2. Turnoffthemeter.
3. Removethescrewsecuringthebatterycoveratthebottomofthemeter.
4. Replacethebatteriesobservingthecorrectpolarity.
5. Replacethecoverandsecurethescrew.
WARNING: To avoidelectric shock, donot operateyour meteruntil thebattery
coverisinplaceandfastenedsecurely.
RESETTABLE FUSE
The resettable fuse (200mA/500V) will open if the current limits of the meter are
exceededand thefuse willautomatically resetitself when the suspected current is
removedfromthemeter’sinput.
LIMITED WARRANTY
Circuit-TestElectronicswarrantstotheoriginalpurchaserthatthisproductbefreeof
defectinmaterialorworkmanshipforaperiodof2yearsfromthedateofpurchase.
Anyproductwhichhasbeensubjectedtomisuseoraccidentaldamageisexcluded
fromthewarranty.Exceptasstatedabove,Circuit-TestElectronicsmakesnopromises
orwarrantieseitherexpressedorimpliedincludingwarrantiesofmerchantabilityorthe
tnessforanyparticularpurpose.
M-DMR-602/07R13
3. Touchthetestprobetipstothecircuitorwireyouwishtocheck.
4. Iftheresistanceislessthanapproximately100Ω,theaudiblesignalwillsound.
Ifthecircuitisopen,thedisplaywillindicate“OL”.