User’s Manual
ENGINE IGNITION ANALYZER
General Technologies Corp.
Table of Contents1. Safety Rules Page 12. Technical Specifications Page 22.1 Generalspecifications Page22.2 Electricalspecifications Page2
3. General description Page 33.1 Instrumentdescription Page33.2Displaydescription Page3
4. Buttons, icons and menus operation Page 44.1POWER/CLEARbuttonandmenu Page44.2CYCLEbuttonandmenu Page44.3 MODEbuttonandmenu Page54.4VIEWbuttonandmenu Page54.5HOLDbuttonandmenu Page64.6Tachometerreadings Page64.7Batterylevelindicator Page6
5. Measurement modes Page 75.1EngineRPM Page75.2Sparkburn(firing)time Page75.3 Sparkplugvoltage Page75.4Dwellangle Page75.5Ramptime Page7
6. Display views Page 86.1Chartview Page86.2Comparisonview Page86.3 Digitalview Page96.4WaveformView Page10
7. Measurement procedures Page 107.1Flexibleprobeandsensorsetup(GTC505andGTC505m) Page117.2Extensioncableandsensorsetup(GTC505monly) Page117.3Measuringcoilonplugandcoilnearplugignitionsystems Page117.4Measuringignitionsystemswithsparkplugwires Page12
8. Recharging the instrument Page 139. Maintenance Page 14
10. Warranty Page 14
1. SAFETY RULES• Thisinstrumentisdesignedforindooruseattemperaturesbetween32°and104°F(0°Cand40°C)andaltitudesupto6500ft.(2,000meters).
• Toensurethattheinstrumentisusedsafely,followallsafetyandoperatinginstructionsinthisoperationmanual.Iftheinstrumentisnotusedasdescribedinthisuser’smanual,thesafetyfeaturesofthisinstrumentmaybeimpaired.
• Donotusetheinstrumentiftheinstrument,thesensors,ortheflexibleprobelookdamaged,orifyoususpectthattheinstrumentisnotoperatingproperly.
•Whenusingtheinstrument,keepawayfrommovingparts(fan,drivebelts,etc)andhotobjects(exhaustpipes,muffler,catalyticconverter,etc),toavoidpersonalinjuriesanddamagetotheinstrument,thesensors,flexibleprobeandextensioncable..
• Donotconnecttheinstumenttoanythingotherthanthesensors,flexibleprobe,extensioncable,USBcable,orACpoweradapterprovided.
• Atalltimes,toavoidelectricalshock,useCAUTIONwhenworkingwithelectricalcircuitsabove60VDCor25VACrms.Suchvoltagesposeashockhazard.
• DonotoperatethisinstrumentwhileconnectedtotheACpoweradaptororanyotherdevice.• Toavoidelectricalshockordamagetotheinstrument,donotexceedthespecifiedinputlimits.Exceeding the limits listed above when using this apparatus, or not observing the precautions listed above can expose you to physical injury and permanently damage
your instrument and/or parts and components of the vehicle under test.
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2. TECHNICAL SPECIFICATIONS2.1 General specifications
Display: 3.5”TFTLCD,320x240pixelsresolution.
Framerate: Upto30timespersecond.
Ignitionsystemtype: Coilonplug,coilnearplug,DIS,wastespark,conventional,andmagneto.
Enginecycle: 2or4strokes.
Power(internal): 3.2volt/1500mAh,rechargeableLiFePO4battery.
Autopoweroff: Automaticallypowersoffafter3min.ofinactivity.
Batterylife: Approximately6hoursofcontinuousoperation.
USBconnector(input): MicroUSB(5Volt/0.5AmperesDC).
Probelength: 13.5”(34cm)includingsensor.
Dimensions: 6.3”x3.9”x1.3”(160x99x34mm)withoutprobe.
Weight: Approximately14oz.or406gwithoutprobe.
Includedaccessories: Sparkplugwiresensor,coilonplugsensor,BNCflexibleprobe,protective rubber holster, padded hard carrying case,microUSBcable,ACpoweradaptor,anduser’smanual.ThemodelGTC505malsoincludesa78”(2m)extensioncableandaclip-onsparkplugwiresensor.
2.2 Electrical Specifications• Thespecificationsbelowaretypicalat23°C,andwillvaryslightlyfromdevicetodevice,andwith temperature.The input voltage shouldnot exceed the indicatedmaximumvalues,topreventpersonalinjuryordamagetotheinstrument.
MeasurementMode MeasurementRange Accuracy/Resolution
Tachometer400to19999RPM
2or4strokeandwastespark Accuracy:0.5%±1LSD
Sparkplugvoltage 0to50kV Resolution:±0.01kV
Sparkburn(firing)time 0to12ms Resolution±0.05ms
Dwellangle 0to>270°(4stroke/600RPM+)0to>180°(2stroke/750RPM+) Resolution:±0.1º
Ramptime(ignitioncoilprimarycurrentramptime) 0to35ms Resolution:±0.05ms
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3. GENERAL DESCRIPTION3.1 Instrument description
3.2 Display descriptionFig.1-Instrumentdescription
Fig.2-LCDDisplay
01607 RPM
-10
10
20
kv
-4 -2 0 2 ms
0
Enginecyclesetting
Modesetting
Displaysetting
Tachometerreading
Batterylevel
Statusindicators
Measurementdisplayarea
MicroUSBconnector
LCDdisplay
POWER/CLEARbutton
CYCLEbutton
MODEbutton
BNCconnector
Protectivehoster
HOLDbutton
VIEWbutton
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4. BUTTONS, ICONS AND MENUS OPERATION
4.1 ‘POWER/CLEAR’ button
•WhentheinstrumentisOFF,toturnitONpressandholdthe‘POWER/CLEAR’ buttonuntiltheunitturnson(inapproximately1second).
•WhentheinstrumentisON,toturnitOFFpressandholdthe“POWER/CLEAR’buttonuntilthedisplayturnsOFF(inapproximately3seconds).
•When the instrument isON, press the ‘POWER/CLEAR’ button to clear allmeasurementdata,andstartanewmeasurement.Thisoperationcanbealsobeperformedtore-scalethemeasurementsandoptimizeviewinginthedisplay.
•The ‘AutoPowerOff’ featurewillautomatically turn the instrumentoffafter3minutesofnobuttonbeingpressedor15secondsafterthelastsparksignalwasdetected.Turningtheunitoffmanuallywhennotinusewillprolongbatterylife.
4.2 ‘CYCLE’ button and menu
• The‘CYCLE’buttonallowsselectionofthenumberofstrokescorrespondingtotheengineundermeasurement.Uponpressingthisbutton,apulldownmenuwillopenwiththecurrentsettinghighlighted,Tochangethesettingpressthe‘CYCLE’buttonrepeatedlyuntilthecorrectsettingishighlighted,thenwaituntilthepulldownmenucloses.Thenewsettingwillbedisplayedasthecycleiconatthetopofthescreen.
01607 RPM
-5-4 -2 0 2 ms
0
4
2
4 Stroke
2 Stroke
Waste Spark
Fig.3-Enginecycleselectionmenu
2strokeenginecycle
4strokeenginecycle
DISorwastesparkignitionsystem
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4.3 ‘MODE’ button and menu The ‘MODE’ button allows the selection of the type ofmeasurement to beshowninthedisplay.Uponpressingthisbuttonapulldownmenuwillopenwiththecurrentsettinghighlighted,Tochangethesettingpressthe‘MODE’buttonrepeatedlyuntilthedesiredsettingishighlighted,thenwaituntilthepulldownmenucloses.Thenewcurrentsettingwillbedisplayedasthemodeiconatthetopofthescreen.
01607 RPM
-5
5
10
kv
-4 -2 0 2 ms
0
Burn Time
Dwell
Tachometer
Voltage
Fig.4-Measurementmodeselectionmenu
Measuring/displayingsparkburn(firing)time.
Measuring/displayingdwellangleorramptime(automaticallyselecteddependingontheconnectedsensor).
Measuring/displayingRPM(tachometer).
Measuring/displayingsparkplugvoltages.
4.4 ‘VIEW’ button and menu
The’VIEW’buttonisusedtoselecthowthechosenmeasurementwillbeshowninthedisplay.Uponpressingthisbuttonapulldownmenuwillopenwiththecurrentsettinghighlighted.Tochangethesettingpressthe‘VIEW’buttonrepeatedlyuntil thedesiredsetting ishighlighted, thenwaituntilthepulldownmenucloses.Thenewsettingwillbedisplayedasthedisplayiconatthetopofthescreen.
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01607 RPM
-10
10
20
kv
-4 -2 0 2 ms
0
Chart
Comparison
Digital
Waveform
Fig.5-Displaymodeselectionmenu
Chart(i.e.trendline)view.
Comparisonview.
Analoggaugeanddigitalreadouts
Waveform(i.e.oscilloscope)view.
4.5 ‘HOLD” button · Whenchart,digitalorwaveformdisplaymodeisselected,pressingthe‘HOLD’buttonwillpausethemeasurement,holdthecurrentdisplay,andtheword“HOLD”willbeshowninthemeasurementareaofthedisplaytoindicatethisstatus.Pressthe‘HOLD’buttonagaintoresumenormaloperation.
· Wheninthecomparisondisplaymode,thisbuttonisusedtoinitiateandstopameasurement.Fordetailssee‘6.2Comparisonview’.
4.6 Tachometer readingDigitalreadoutoftheengineRPM.
4.7 Battery level indicator Thebatterylevelindicatorprovidesanapproximateindicationofthestateofchargeoftheinternalbattery,asfollows:
Full
Empty
NOTE: Theinstrumentwillturnautomaticallyoffifthebatteryvoltagefallsbelowtheabsoluteminimum.
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5. MEASURING MODESTherearefourdifferentignitionsystemparametersthatcanbeselectedformeasurement,dependingontheengine’signitionsystem:
•EngineRPM.•Sparkburn(firing)time.•Sparkplugvoltage.•Dwellangles(forignitionsystemsequippedwithhighvoltagesparkplugwires).•Primaryignitioncoilcurrentramptime(forcoilonplugandcoilnearplugignitionsystems).
5.1 Engine RPMMeasuresengineRPM(revolutionsperminute)in2and4strokeengines,andmaybeusedincombinationwithothermeasurementstoevaluateignitionsystem performanceatdifferentenginespeeds.
5.2 Spark burn (firing) timeThe spark burn time, also called “firing time”, is themeasurement of the period fromthemomentasparkisinitiateduptothepointwhenit isextinguished,andisthemostindicativemeasurementofperformanceoftheignitionsystem.Abnormallylongorshortburntimesmayindicatesomeproblemintheignitionmodule,sparkplug,fuelmixture,cylindercompression,etc.
5.3 Spark plug voltageSparkplugvoltagevaluesareusefulforcomparingtheperformanceoftheignitionsystembetweencylinders.Thismaybeusedtodiagnosecommonproblemslikemisfires,brokensparkplugwires,etc.Sparkplugpeakvoltagesmayvarywidely,arelessconsistentandnotalwaysindicativeofaproperlyworkingignitionsystem.Ontheotherhand,observationofthesparkplugvoltagewaveformortrendmayproveusefulindiagnosingignitionandmechanicalproblems.
5.4 Dwell angle (for ignition systems using spark plug wires only)Dwellangleisameasurementoftheangleofrotationofthecrankshaft,betweenthemomentinwhichtheprimaryoftheignitioncoilisenergized(e.g.pointcontactsclosed)andthesparkisgenerated(e.g.pointcontactsopened).Itsmainuseisindeterminingifthereisenoughangle(ortime)toenergizetheprimaryoftheignition,andnotsomuchastocausetheignitioncoiltooverheatandfail.DwellanglesarespecifiedforaparticularengineandRPM,andusuallyadjustedinthemechanicaldistributor/pointassembly.
5.5 Current ramp time (for coil on plug and coil near plug only)Ramp time ismeasured fromwhen theprimary coil current first begins to increase towhenitstopsincreasing.Thecurrentmaystopincreasingbecausethecoilhasreacheditssaturationpoint,oritisinterruptedtogenerateaspark.
Ramp timemeasurementsareuseful fordiagnosingproblems in theprimarycircuitoftheignitionmodule.Abnormallylongramptimesmayindicateexcessiveprimarycircuitresistance,lowinputvoltage,thatthewrongmoduleisinstalled,etc.Shorterthannormalramptimesmayindicateashortedprimarycoil,thatthewrongmoduleisinstalled,etc.
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6. DISPLAY VIEWSTherearefourviewsthatcanbeselectedtodisplaymeasurements:
•Chart
•Comparison
•Digital
•Waveform
6.1 Chart viewThisviewdisplaystheselectedmeasurement’svaluecorrespondingtoeachofthelast276sparks,withtheleftmostmeasurementbeingtheoldest,andtherightmostthenewest.Themeasurementscaleandunitsarelocatedontheverticalaxis,atthefarleftofthedisplay.
0S
2
3
RPM
1
01607 RPM
Fig6-Chartviewdisplay
• ‘POWER/CLEAR’ button: PressingthePower/Clearbuttonclearsallvaluesfromthechart,andre-scalesthechartifnecessary.
• ‘MODE’ button: Pressingthe‘MODE’buttononcewillopenthemodemenu,andhighlightthemeasurementmodecurrentlyselected;pressingthe‘MODE’buttonagainwhilethemenuisopenwillselectthenextavailablemeasurementmode.Allfourmeasurements(sparkburntime,RPM,sparkplugpeakvoltage,anddwellangleorramptime)aresimultaneouslytrackedandstored,andareavailableforviewingatanytime(withoutdelay).
• ‘HOLD’ button: Pressingthisbuttonwillpausethemeasurement,andholdthedisplayinitsthecurrentcondition.Pressingthe‘HOLD’buttonagainwillresumenormalmeasurement.
6.2 Comparison viewThismodeallows thecomparisonofsetsofvalues (minimum,averageandmaximummeasurements) between several cylinders, under various testing conditions, or othersituations.Themeasurementsaredisplayedfromleft toright,withtheleftmostsetofvaluesbeingtheoldest,andtherightmostthenewest.Anewsetofvaluesisaddedeverytimethe‘HOLD’buttonispressedtwice(stop/start)anduptothelast16setsofvalueswillbeshowninthegraphatonce,ifthismaximumisexceeded,theoldestsetwillbedeletedandanewsetadded.Themeasurementscaleandunitsarelocatedontheverticalaxis,atthefarleftofthedisplay.
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0
10
15
kv
5
01607 RPM
Maximum
Average
Minimum
Oldestset Newestset
Fig.7-Comparisonmodedisplay• ‘POWER/CLEAR’ button: Pressingthe‘POWER/CLEAR’buttonclearsallmeasurements,andre-scalesthechartifnecessary.
• ‘MODE’ button: Pressingthe‘MODE’buttononcewillopenthemodemenu,andhighlightthemeasurementmodecurrentlyselected;pressingthe‘MODE’buttonagainwhilethemenuisopenwillselectthenextavailablemeasurementmode.Allfourmeasurements(sparkburntime,RPM,sparkplugpeakvoltageanddwellangleandramptime)aresimultaneouslytrackedandstored,andareavailableforviewingatanytime(withoutdelay).
• ‘HOLD’ button: The‘HOLD’buttonwhenpressedoncepausesmeasurementandholdsthedisplayinitscurrentcondition(whiledisplayinga“HOLD”labelinthecenterofthescreen).Pressingthe‘HOLD’buttonasecondtimewillremovethepause(andlabel),andaddanewsetofvaluesattherightofthescreen,whichwillkeepupdatinguntilthe‘HOLD’buttonispressedagain.Thiscyclerepeatseverytimethebuttonispressedtwice(stop/start)anduptothelast16setofvalueswillbeshowninthedisplayatonce,ifthismaximumisexceededtheoldestsetwillbedeletedandanewsetadded.
6.3 Digital viewThisviewprovidesanaloggaugeanddigitalreadoutsfortheselectedmeasurement,aswellasdigitalreadoutsforthethreeothermeasurements.
7.14MAX
5.20
6.71MIN
kV02
4
68
10
12
01607 RPM
PEAK
Fig.8-Digitalmodedisplay
• ‘POWER/CLEAR’ button: Pressingthe‘POWER/CLEAR’buttonclearsalldigitalreadoutvalues,andre-scalesthegaugeifnecessary.
• ‘MODE’ button: Pressingthe‘MODE’buttononcewillopenthemodemenu,andhighlightthemeasurementmodecurrentlyselected;pressingthe‘MODE’buttonagainwhilethemenuisopenwillselectthenextavailablemeasurementmode.Allfourmeasurements(sparkburntime,RPM,sparkplugpeakvoltageanddwellangleandramptime)aresimultaneouslytrackedandstored,andareavailableforviewingatanytime(withoutdelay).
• ‘HOLD’ button: Pressing this buttonwill pausemeasurement, andhold the display in the currentcondition.Pressingthe‘HOLD’buttonagainwillresumenormalmeasurements.
6.4 Waveform viewThismodedisplaysthesignalamplitudeovertime(likeanoscilloscope).Thescaleandunitsofthemeasurementarelocatedontheverticalaxis,atthefarleftofthedisplay.Thetimescaleandunitsareshownbelowthehorizontalaxis,atthebottomofthescreen.
01607 RPM
-10
10
20
kv
-4 -2 0 2 ms
0
Fig.9-Waveformdisplay• ‘POWER/CLEAR’ button: Pressingthe‘POWER/CLEAR’buttonclearsthegraph,andre-scalesifnecessary.• ‘MODE’ button: Pressing the ‘MODE’ button oncewill open themodemenu, and highlight themeasurementmodecurrentlyselected;pressingthe‘MODE’buttonagainwhilethemenuisopenwillselectthenextavailablemeasurementmode.Thewaveformgraphfocusesontheareaofthesparkwaveformwhichismostrelevanttothemodeselected.
• ‘HOLD’ button: Pressingthisbuttonwillpausethecurrentmeasurement,andholdthedisplayinthecurrentcondition.Pressingthe‘HOLD’buttonagainwillresumenormalmeasurement.
7. MEASUREMENT PROCEDURES
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CAUTIONToavoidpersonalinjuriesanddamagetotheinstrumentcarefullyinspectthesparkplugwires,distributorcap,ignitioncoil,ignitionmodulesandallotherignitionsystempartsfordamageorleaks,andavoidusingtheinstrumentincaseanydamageorleaksarefound.Nevertouchthesensor,flexibleprobeorcableduringatest.Wearinsulatinggloveswhenworkingaroundhighvoltageandhotparts,andkeepawayfrommovingparts(fan,drivebelts,etc.)andhotobjects(exhaustmanifoldandpipes,muffler,catalyticconverter,etc.).
Theinstrumentwillautomaticallydetectandconfigureaccordingtothesensorconnectedto theprobeorextensioncable.Using thewrongsensor for the ignitionsystemundermeasurementmayleadtoerroneousreadings,ornoreadingsatall.
7.1 Flexible probe and sensor setup (GTC505 and GTC505m)Thisinstrumentissuppliedwithaflexibleprobe,andtwotypesofsensors:• Flexibleprobe:equippedwithaBNCconnectoratoneendandabarrelconnectorattheother.• COPsensor:formeasuringcoilonplugandcoilnearplugignitionsystems.• SPWsensor:forallignitionsystemswhichusehighvoltagewires(sparkplugwires)toconnecttheignitioncoilordistributortothesparkplug.
COPsensor SPWsensor
Flexibleprobe
Fig.10-Sensorsconnectiontoflexibleprobe1-ConnecttheprobetotheinstrumentusingtheirBNCconnectors.2-InsertandfirmlypresstheappropriateCOPorSPWsensorintothebarrelconnector
oftheprobe.
7.2 Extension cable and sensor setup (GTC505m only)TheGTC505misalsosuppliedwithaextensioncableandclip-onsparkplugwiresensortoallowforremotemeasurements:• Extensioncable:78” (2m)equippedwithaBNCconnectoratoneendandabarrelconnectorattheother.ThisextensioncablecanbeusedwithCOP,SPWandtheclip-onSPWsensor.
• Clip-onSPWsensor:forallignitionsystemswhichusehighvoltagewires(sparkplugwires)toconnecttheignitioncoilordistributortothesparkplug.
Fig.11-Sensorsconnectiontoextensioncable
1-ConnecttheextensioncabletotheinstrumentusingtheirBNCconnectors.2-Insertandfirmlypress theappropriateCOPorclip-onSPWsensor into thebarrel
connectoroftheextensioncable.7.3 Measuring coil on plug and coil near plug ignition systems1-Ensuretheinstrumentisturnedoff.2-InserttheCOPsensorbarrelconnectorplugintotheflexibleprobereceptacle,removing
theSPWsensorifnecessary.Page11
COPsensor Clip-onSPWsensor
Extensioncable
3- Turn the instrument on and select the appropriate cycle for the engine undermeasurement.
4-Selectthedesiredmodeandview.5- PlacetheCOPsensoronthetopandcenteroftheignitionmodule(asshowninthe
Fig.12),andobservewhethertheinstrumentisabletodetectanddisplaythedesiredmeasurement.
Fig.12-UsingtheCOPsensoronaignitionmodule
6-Iftheinstrumentisunabletodetecttheignitionsystemsignal,itmaybenecessarytorepositionthesensorsothataconsistentsignalisdetectedanddisplayed.
NOTES • The position of the sensor and the particular design of the ignitionmodulemayaffect the signal’s shapeshownwhen thewaveformdisplay is selected. Inorder tocomparewaveformsbetweenseveralcylinders’ignitionmodules,theplacementofthesensorrelativetotheignitionmoduleshouldbekeptasconsistentaspossibleforallthemeasurements.
•In someengines, the ignitionmodulesare located very close together, and in rareoccasionsthiscouldcausetheinstrument’ssensortodetectsignalsfromnearbymodules,leading to inconsistentmeasurements.This canusually be solvedby changing theplacementororientationofthesensorontheignitionmodule.
7.4 Measuring ignition systems with (high voltage) spark plug wires1-Ensuretheinstrumentisturnedoff.2-InserttheSPWorClip-onSPWsensorbarrelconnectorplugintotheflexibleprobeorextensioncablereceptacle.
3-Turn the instrument on, and select the appropriate cycle for the engine undermeasurement.
4-Selectthedesiredmodeandview.5-IfusingtheSPWsensor,placethesparkplugwireintotheslotofthesensor,andasfaraspossiblefromothersparkplugwirestryingtomaintainarightangle(90°)betweenthesensorandthewire.
SparkplugwireSPWsensor
Fig.13-UsingtheSPWsensoronasparkplugwire
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COPsensor Ignitionmodule
Page13
6-Ifusingtheclip-onSPWsensor,placethesparkplugwireintotheslotofthesensor,as faraspossible fromothersparkplugwires,and turn thebodyclockwise60° tolock thesensoron thesparkplugwire.Tounlock, turn thebodyof thesensor60°counterclockwise.
Fig.14-Usingtheclip-onSPWsensoronasparkplugwire
7-Iftheinstrumentisunabletodetecttheignitionsystemsignal,itmaybenecessarytorepositionthesensorsothataconsistentsignalisdetectedanddisplayed.
NOTES• Theabsolutesparkplugvoltagereadingwilldependonthepositionofthesensor,theparticularcharacteristicsofthewire,etc..Thereforetheplacementofthesensorrelativetothewireshouldbekeepasconsistentaspossibleforallthemeasurementsinordertocomparevoltagereadingsbetweenseveralcylinders’sparkplugwires.
•Sparkburntime,dwellangleandRPMmeasurementsarenotsensitivetotheexactpositionofthesensorrelativetothesparkplugwire,butthesensormustbepositionedsotheinstrumentiscapableofdetectingthesignal.
• When several spark plug wires are routed or bunched close together, the capacitivesensormayreceivesignalsfromtwoormorewiressimultaneously,whichcouldcauseerroneousmeasurements.Inthesesituationsitisnecessarytoseparatethewireundermeasurementfromtheothers,inordertoreduceinterferenceandobtainanaccuratemeasurement.
8. RECHARGING THE INSTRUMENT1-Ifstilloperating,turntheinstrumentpoweroff.2-Locateandlifttherubbercap(attachedtotheprotectiveholsterandlocatedbesidestheBNCconnector)torevealthemicroUSBreceptacle.
BNCConnector MicroUSBconnectorcap
Fig.15-Instrument’sconnectors
1 2
Page14
3-InserttheUSBchargercable’smicroUSBplugintothereceptacleoftheinstrumentmatchingtheorientationoftheconnectors.
4-InserttheUSBtypeAconnectorofthecableintotheUSBportofthesuppliedUSBpowerchargeradapter,andplugthepoweradapterintoanACpoweroutlet.
5-Uponstartofchargingthebattery,thedisplaywillshowthecharginginprogressiconandthescreenwillturnoffafterafewseconds.
CharginginprogressChargingcomplete
Fig.16-Chargingindicators
6-Iftheinstrumentisturnedon(bypressingthe‘POWER/CLEAR’button)atanytimewhileconnectedtothepoweradapter,theinstrumentwilldisplaythechargingstatus.
7-TheUSBtypeAconnectorcanbealsopluggedintoaUSBportofapersonalcomputer,poweredUSBhub,oranyotherUSBcompliantpowersource.
5-Therechargetimewilldependonthestateofchargeofthebattery,anditmaytakeupto6hourstofullyrechargeadepletedbattery.
NOTES• If the instrument has not beenused for a long time, or the state of charge of thebatteryhasfallentoacriticallylowlevel,aperiodofpre-conditioningofthebatteryisautomaticallyaddedtothenormalchargingcycle,whichincreasesthechargingtimeinordertorestorethebatterycapacitytoitsmaximum,Nouserinterventionisneeded,andthisprocessisautomaticallycarriedoutbytheinstrument.
• If thebattery iscompletelydepleted,pressing thepoweronbuttonwillnot turn theinstrumenton,anditmustberechargedbeforeitcanbeusedagain.
9. MAINTENANCEKeeptheinstrumentinitscarryingcasewhennotinuseanddonotsubjectittodampness,severeheatorcold.Donotusetheinstrumentintherain;ifitshouldaccidentallygetwet,dryitoffwithacleanpapertowelbeforestoringitaway.
Protecttheunitfromcontactwithanysolvents.Nevercleanwithasolventorpetroleumbasedmediumsuchasgasoline,as thesechemicalsmayattack theplasticpartsandcausepermanentdamage.Neveruseanabrasivecleaner.Cleaningshouldbelimitedtowipingwithacleandamppapertowelandasmallamountofsoapifrequired.Drytheunitthoroughlyafteranycleaning.
Theunit is a sealed instrument, andcontainsnouser serviceableparts.Opening thisinstrumentwillvoidthewarranty.
10. WARRANTYThisinstrumentcarriesaone(1)yearwarranty(fromthedateofpurchasebytheoriginalowner)againstdefectsofmaterialorworkmanship.FordetailsseeourStandardWarrantyInformationonourwebpageatwww.gtc.ca,orrequestaprintedcopy.
Part#GTC505MN1707EN
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