BK2120C_Manual_English_20091019

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BK2120C
2ChannelLinearVibrationMotorTester
UserManual




BaKoBK2120C
Manual
2010-03-18-20:58


BaKoBK2120CTableofContents

Background...........................................................................................................................................................3BaKoCompany..................................................................................................................................................3BaKoBK2120C..................................................................................................................................................4Definitions.....................................................................................................................................................4F0Vibration.............................................................................................................................................4F0Frequency............................................................................................................................................4F0Vibration.............................................................................................................................................4Fc..............................................................................................................................................................4FRF...........................................................................................................................................................4Noise........................................................................................................................................................4NoiseBand...............................................................................................................................................4NoiseTHD...............................................................................................................................................4THD..........................................................................................................................................................4NoiseT......................................................................................................................................................4Polarity.....................................................................................................................................................5Installation.............................................................................................................................................................6What’sinthebox...............................................................................................................................................6SequenceforPreparingtheBK2120C...............................................................................................................7HardwareSetup.................................................................................................................................................7InstallingtheDrivers.........................................................................................................................................8SoftwareInstallation........................................................................................................................................10ToUninstallSoftware.................................................................................................................................11ToEnterModelSpecificationsintotheComputer...........................................................................................12TestSetupTab............................................................................................................................................12FunctionType........................................................................................................................................13Fix......................................................................................................................................................13Sweep................................................................................................................................................13StepSweep........................................................................................................................................13Rising-Falling....................................................................................................................................13DecayRate.........................................................................................................................................13VibrationTrend.................................................................................................................................14SequenceOptions...................................................................................................................................14GeneratorSetup......................................................................................................................................14SweepMeasurementSetup....................................................................................................................14StepSweepMeasurementSetup............................................................................................................15FixMeasurementSetup..........................................................................................................................15TestLimitTab.............................................................................................................................................15F0,FcTab...................................................................................................................................................15F0Test....................................................................................................................................................15PolarityTest...........................................................................................................................................16FcTest....................................................................................................................................................16F1-F2Test..............................................................................................................................................16Noise,Rising-Falling,DecayRateTab.......................................................................................................17NoiseTest1............................................................................................................................................17NoiseTest2(THD................................................................................................................................17RisingFalling.........................................................................................................................................17
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RealTimeTest............................................................................................................................................18SystemSetupTab........................................................................................................................................19AutoStartActive....................................................................................................................................19TestStartOption....................................................................................................................................19ToCreateaNewModelFile..................................................................................................................20Calibration.......................................................................................................................................................21GeneratorSensitivityCalibration................................................................................................................21CurrentSensitivityCalibration...................................................................................................................22EnteringVibrationSensitivity.....................................................................................................................22Testing.................................................................................................................................................................24StartingaNewLot...........................................................................................................................................24TestDataFileSelection..............................................................................................................................24AppendixA:MenuQuickReference................................................................................................................24AppendixB:ModelFilePasswordOptions......................................................................................................26ToChangetheModelFilePassword...............................................................................................................26ToEnable/DisabletheModelFilePassword..................................................................................................26AppendixC:ManipulatingtheGraphs............................................................................................................27ChangingtheSizeofaGraph..........................................................................................................................27ChangingtheScaleofaGraph........................................................................................................................27ChangingtheTypeofGraph............................................................................................................................27SavingaGraph................................................................................................................................................27
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BaKoCompany
BaKoBK2120C
Manual
2010-03-18-20:58


TheBaKoCompanywassetupinJanuary2001toprovidesuperiorsoundandvibrationqualitytestingwiththeaimofimprovingthecomfortofendusers.Bydefiningthepracticalskillsneededandcreatingdigitalprocessingtechniques,theyhavetakenaleadingroleinimprovingelectro-acoustics.BaKohas
developedtestingequipmentformanykindsofvibrationproducingequipmentincludingspeakersforhandsetsandheadsets,cellularphonesandautomobiles.
The4channelaudioanalyzerBK2120Cwasdevelopedin2006totestearphonesasareplacementforthe2channelBK2110
FormoreinformationcontacttheBaKoCompanyatthefollowingaddress
BaKoCo.,Ltd.
GyeonggiR&DBCenter5F,906-5Iui-dong,Yeongtong-gu,SuwonGyeonggi-do,Korea443-270
Tel:+82-31-888-5640/1Fax:+82-31-888-5645
http://www.BaKo.co.kr
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BaKoBK2120C
Manual
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BaKoBK2120C

TheBK2120CwasdesignedandmanufacturedbytheBaKoCompanyofSouthKoreatoprovidethehighestqualityvibrationtestingforlinearmotorsatthepointofmanufacture.Itisveryeasytosetupanduse,andiscapableoftestingfrequenciesfrom20Hzto20kHz.
BeforeexplainingmoreabouttheBK2120C,itisusefultodefinesomecommontermsthatappearinthemanual
F0Current–CurrentusedbyaDUTattheF0Frequency
F0Frequency–Frequencyofmaximumvibration
F0Vibration–Frequencyofmaximumvibration
Fc–Centerfrequencyoverauserdefinedlevel(seediagramattheend
(Userdefinedfrequencylevel
FRF--FrequencyResponseFunctionfromvibration
Noise–TheBK2120CtestsTouchSound,THD,andNoiseBand
NoiseBand–Totalnoisewithinauserdefinedfrequencyband
NoiseTHD(THD(TotalHarmonicsDistortion–therateofharmonicsdistortioncomparedtothe‘pure’electronicsignal,measuredinpercentage(%
NoiseT(NoiseTotal–allthesoundexcepttheprimaryharmonic
NoiseTouchSum–thisisthetotalnoiseinabandgoingfromthefundamentalfrequencytotheendofthelastharmonicevaluated.
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Polarity–directionofvibrationgivenaspecificdirectionofcurrent.
FrequencyDomain–DatafromtheDUTisgatheredasVoltageoveraperiodoftime.Formostpurposes,leavingthedatainthetimedomainisnotveryusefulsoitisconvertedusingaFastFourierTransform(FFT.Thisputsthedataintoaformsowecanseehowstrongthevibrationisatparticularfrequencies.Wecallthisthefrequencydomain.Inthefrequencydomaingraph(rightbelow,weseethattheamplitudeofthevibrationrisessharplybetween160Hzand174Hzandrisesslightlyto178Hz,whereitdecreasessharplyuntilabout189Hz.Thisismuchlessobviouswhenwelookatthesamedatainthetimedomain(left.


DecayRate–Therateofdecayfromwhenpowertothemotoriscutuntilitfallstoauserdefinedpercentageoftheamplitude=[g/sec]
Notethatthereare2methodsthatthiscanbecalculatedintheBK2120C.Thefirstmethodisdefinedinthe“Rising-Falling”section,wherethestartamplitudeusedisthestableamplitudeattainedovertime.Thesecondmethodisdefinedinthe“DecayRate”sectionandthestartamplitudeusedisthepeakamplitude.
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Manual
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Installation
What’sinthebox
WhenyoureceivetheBK2120Csystem,youshouldreceivethefollowing1.
BK2120CUnit
ICP
AccelerometerAnd
PowerCableSoundCard
RS232NullModemCable(Maybepreinstalled

Inaddition,thefollowingoptionalcomponentsarenormallyshippedaspartoftheBK2120Csystem.
ComputerComputerMonitorKeyboardMouseAssortedcables(pre-installedBK1090driversand“TestShop”programCoupler
CouplerFixtures(Jig–designedbyrequestOK/NGLEDDisplay

1
NotethatinthenewestmultipleversionoftheBK2120C,thereisnosoundcard,asthesoundcardfunctionsarehandledinternally.
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Manual
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PreparingtheBK2120CforUse

Sequence
NormallyyourBaKorepresentativeswillpreparetheBK2120Ctouse,howeveritisasimpleprocesswiththefollowingsteps.

1.Assemblethehardware2.Setupthesoftware
3.Completethemodelfile(orimportamodelfile
4.CalibratetheGeneratorSensitivity,theCurrentSensitivityandinputthevaluefor
VibrationSensorSensitivity5.Startanewlotfile
HardwareSetup
TheBaKoBK2120Csoundcardinthecomputerhas4portscapableof
connectingtoa¼”jack.ThetoptwoshouldbeconnectedtothebackoftheBK2120Cboxasshown.Inaddition,thestandardIOIOIportonthecomputermotherboard(notshownconnectsviaanullmodemcabletotheRS232cportatthebackoftheBK2120C(asinthepicture.

DIOportconnectstoLinein1&2micBK2120C‘Chanel1SigOK/NGLEDdisplayunitandpedals(notBK2120C‘Chanel1Imp
RS232cPortshown
Linein3&4mic
BK2120C‘Chanel2Sig

BK2120C‘Chanel2Imp

Sig
Imp
Input1connectstotheleftaccelerometer
Gen1connectstotheleftlead
whichconnectstotheleftDUT

OnthefrontoftheBK2120C,connectProbe1totheleftaccelerometerandProbe2torightaccelerometer.Gen1isconnectedtotheleadthatconnectstotheleftchannelDUTandtheleadtotherightchannelDUTisconnectedtoGen2.
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InstallingtheDrivers
Thereare2driversthatmustbeinstalled.NormallytheyareinstalledbyBaKopersonnelafterthesystemisassembled.Ifyoumustinstalldrivers,theymaybeinstalledasnormaldriversusingthecomputer’s‘NewHardware’detectionsystemwiththefollowingsteps
1Bootthecomputer.The
computerwillshowthefollowing‘NewHardwareDetected’screen.

2.Choose“No,notthistime”.InserttheBaKo2021InstallationCDandclick
.ThecomputerwilltellyouithasfoundtheBK1090ControllerDriver.Clickandinstallthedriverasnormally.

3.Youwillreceivethefollowingwarning.
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Manual
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4.Presstoinstallthedriver.
Whenitisfinishedinstalling,youwillreceivethefollowingmessage

5.Clicktofinishinstalling.Thecomputerwillgiveyouanew‘FoundNewHardware’message.FollowthesamestepstocompletetheinstallationoftheBK1090Audiodriver.
6.Nowchecktomakesurethedriversare
installed.Openthedevicemanager(fromthecontrolpanel,gotosystemandclickthetab.Click.

7.CheckthatbothBK1090controllerandBK1090Audioarelistedunder‘Sound,videoandgamecontrollers’
BK1090Controller&BK1090Audio

DriverInstallationisnowcomplete.
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SoftwareInstallation
Afterthedriversareinstalled,youcaninstalltheBS1123‘TestShop’programusingtheautoinstallprogram.
BasicInstallation
1.Fromtheappropriatefolder(maybeinadirectoryinthecomputer,onaCDROMoraUSBdrive,selectBK2120CSetup.exeFile.Thefollowingscreenwillappear

3.Clicktogetthefollowingscreen

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4.SelectthedefaultfolderorBrowsetoselectadifferentfoldertoinstallthesoftwarein.Thefollowingscreenwillappearafterashortwaittoloadthefiles.


Clicktofinishinstallation.ABK2120Ciconshouldappearonthedesktop
ToUninstallSoftware
Click

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ToEnterModelSpecificationsintotheComputer
Usingthemodelfile,theusercancontrolthekindsoftestsrunandthe
specificationsthattheDUTmustmeetinordertopass.Themodelfilecanbeeasilysetup.Ifseveralcomputerswillbeperformingthesametests,itmaybeimportedtosavetimeandensureallhavethesamespecifications.
Sequence
1Tosetupthemodelfile,beginbyclickingtheiconfromtheBK2120C
andfollowthemenubar2.Ifyouwishtocreateanewmodelfile,click
instructionstonameandsavethenewfile(ifyoudonotcreateanewfile,the
frequentlyasyouenterdata.currentsetupwillbelost.Click
2CheckboxesfromSEQ1toSEQ4,totellthecomputerhowmanytestsequencestorun.
3EntertheappropriateTestSetupdataforSEQ1onthe
tabandenterthedataonthe
box.Normallyyouwillnotneedtoenteranyother
sectionsoftheModelFileSetupBox.5Clickthe
tosavethedataandclosethemodelfilebyclicking
after
enteringdataormakingchanges.
screenandthe
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sequencesinthetest.DothisbycheckingSEQ1toSEQ4.Thensetupeachsequencebyclickingontheappropriatetabandchoosingtheappropriatesettingsforthemodelfile.
FunctionTypedeterminesthetypeofsignalgenerated.Choosefrom:
Fix–afixedfrequencysignal.UsedtodetermineF0Vibration,F0Current,NoiseTouch,NoiseBandandNoiseTHD.
Sweep–asignalthatquicklyincreasesordecreasesinfrequency,spendinglesstimeoneachhigherfrequency.Usedtodetermine
frequency,currentandvibrationvaluesforF0,F1,F2,andFcandalsotofindpolarity.
StepSweep–asignalthatincreasesordecreasesinfrequencymoreslowlythanaSweep,spendingauserdefinedtime(seeStepSweepMeasurementSetupateachfrequency.ThistakeslongerthanaSweepbutcanprovidemoredetailedinformationinareaswherethevibrationintensityincreasesrapidlyoverasmallrangeoffrequencies.
Rising-Falling–Thisstartsandstopsthesignalrapidly(usuallyinlessthanasecondandcangivethreetestresults:
RisingTime–timefromauserdefinedpercentageofthestablevibrationamplitudeuntilthestablevibrationamplitudeisreached(notethatthevibrationamplitudemaynotbestableatthistimeFallingTime–timefromwhenthepowertothemotoriscutatthestablevibrationamplitudeuntilthetimeitreachesauserdefinedpercentageofthestablevibrationamplitude
DecayRate–thedifferenceinthestableamplitudeandtheuserdefinedpercentageofthestableamplitudeingordBgalldividedbyFallingTime.Itismeasureding/sordBg/s.ForanalternatemethodofdeterminingtheDecayRate,seethenextsection.
DecayRate–Thisdeterminesdecayrateinamannersimilartothe
manual‘ping’testtraditionallyusedfordecayrate.Unlikethedecayratedeterminedintheprevioussection,thepowertothemotoriscutafteranumberofwaves,whichisdeemedtobethepeakvibrationamplitude(beforeitstabilizes.TheDecayRateisthencalculatedasthedifferencebetweenthepeakamplitudeandtheuserdefinedpercentageofthepeakamplitudeingordBgdividedbythetimefromwhenthepowertothemotoriscutuntilthetimeitreachestheuserdefinedpercentage.Itis
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givening/sordB/s.AnalternatemethodofdeterminingDecayRateisgivenintheprevioussection.
VibrationTrend–Thisistoallowauserdefinedfunctiontobecreated,howeveritiscurrentlynotsetup.

SequenceOptions
TestErrorStop–Ifselected,thetestwillstopifanerroroccursinthissequence.
TestStartDelay–definesthedelaytimebetweenwhentheprevioussequencefinishesandthecurrentsequencebegins
GeneratorSetup
LowerFrequency–Thisdeterminesthefrequencyofasignal
containingonlyonefrequency(Fix,Rising-Falling,DecayRateorthelowerfrequencyofaSweeporStepSweep.
UpperFrequency–TheupperfrequencyofaSweeporStepSweep.Thisisignoredforfunctionscontainingasinglefrequency.
Output–Voltageofthesignal.
TestTime–totaltimeforthesweeportonetorun.
GeneratorType–determineswhetheraSweeporStepSweepgoesupordown.
WaveType–allowsusertochoosebetweenasineorasquarewave.
DecayRateSetup
SignalCycleNumber–canbeusedtodeterminethetotalnumberofwavesusedtodeterminetheDecayRate.Notethat
TestTimeis
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FRFDataResolution–determinestheresolution,inHz,ofdatagraphs.
StepSweepMeasurementSetup
AverageDelay–timebetweensteps
AverageTime–lengthoftimeforeachstep
FixMeasurementSetup
VibrationAverageNumber–Inordertotestthesignalonlyafteritisstable,thistellsthecomputerthenumberof0.092stimesegmentstotestattheendofthesignal.
NoiseTestDelay[sec]–Inordertoavoidtestingthesignalbeforeitisstable,thistellsthecomputerhowlonginseconds,towaitbeforebeginningnoisetesting
TestLimitsTheboxesfor
boxand
afterenteringdataormakingchanges

Tab

F0Test–frequency,currentandvibrationrangestobetested.
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Fix–TestLimit-F0,Fc



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PolarityTest–expected(referencepolarityandthefrequencyitwillbetestedat.
QTest–F1andF2levelratiotoF0asamultipleofF0
QLimit–upperandlowerlimitinHz.
FcTest
Sweep(StepSweep–TestLimit-F0,Fc

Fcisafrequencydefinedasthe
averageofF1andF2whereF1andF2arethefrequenciesatwhichthevibrationamplituderisesaboveauserdefinedlevelandatwhichitfalls
belowa(oftenthesamelevel.Notethatforupwardsweeps,F1isthelowerfrequencyandfordownwardsweeps,F1isthehigherfrequency.Ifthesweepdirectionischanged,F1andF2arereversed.
LevelSetup–ThevibrationleveltodetermineF1andF2
FcFrequencyLimit–rangeFcmustbein
F1/F2FrequencyLimit–rangeF1/F2mustfallwithin
VibrationLimit–rangeofvibrationlevelFcmustfallwithin
F1-F2Test
ThisisatestofvibrationlevelatF1andF2frequenciesdeterminedbytheuser.
F1/F2Frequency–thefrequencyofF1/F2
Fix(Sweep,StepSweep–TestLimit–Noise,Rising-Falling,
DecayRate
F1/F2Vibrationlimit–thevibrationleveltheF1/F2frequencymustfallwithin.
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+RecordTime–Thetimeafterthegeneratorstopsthatdatacontinuestoberecorded.

DecayRateLimit–RangeofacceptableDecayRatetimesindB/sorg/s(dependingonDecayRateScale.
Falling/RisingTimeLimit–AcceptablerangeofFalling/RisingTimes.

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afterenteringdataormakingchanges(if
creatinganewmodelfile.
Onlyafewsettingsinthissectionarerelevanttomostusers.Theyarethesamefortheentiretest.
AccelerometerUnit–gorm/s2
Vibrationsensitivityat1g–inmV
RepeatTestOption
TestMode–usedtoswitchbetween‘Repeat’,usedfortestingtheequipmentand‘Test’usedfortestingDUT’s
RepeatInterval/Repeatnumber–ifin‘Repeat’
mode,determinestheintervalbetweentestsandthenumberofteststocarryout.
TestStart
AutoStartActive–ifchecked,connectingtheDUTwillstartthetest(aftertheAutoStartDelay.Otherwise,theusermuststartthetestwiththetestbutton,afootpedalorthecomputerbutton.
TestStartOption–Uni-startcausesbothchannelstostartsimultaneously

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ToImportModelSpecificationsfromaFile
1.Fromthemenuatthetop,choosetheicon.Thetestsetupmenuwillappear.Clickatthebottomofthebox.
2.Clickandthefileopendialogueboxwillappear.
3.Selectthereferencefile(.modfileyouwanttouse.
ToCreateaNewModelFile
Tocreateanewmodelfile,click
.Andfollowtheinstructionstoenterthenameofthenewmodelfile.Thencontinuetosetupthemodelfilenormallysavingthedataasyougobyclicking.
willsavedatainthecurrentmodel,whetheritisanewNote:Clicking
oneoroneyouusedbefore.
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Calibration
Duetosmalldifferencesbetweenindividualsystemsandindividual
accelerometers,therearesmalldifferencesbetweendatafromthesamesamplewhentestedondifferentsystems.Calibrationeliminatesthisvariationsomakesitpossibletoapplystandardsandcomparedataobtainedfromdifferentsystems.ThismayalsomakeiteasierforoperatorstoquicklyrecognizewhichDUT’spassandwhichfail.
Thereare3typesofcalibration.Theymustallbedoneduringtheinitialsetupofthemachine.GeneratorSensitivityandCurrentSensitivityCalibrations
shouldbecheckedaboutonce/month(thiswillvarybetweenDUT’s.VibrationSensitivityCalibrationshouldbedoneiftheaccelerometerischanged.

InitialSetupNew/DifferentAccelerometerMonthly

GeneratorSensitivityCalibration

CurrentSensitivityCalibration

VibrationSensitivityCalibration

GeneratorSensitivityCalibration
Thismustbedoneaftersetupandshouldbecheckedmonthly.ItshouldbedonebeforeCurrentSensitivityCalibration.
1.IntheBK2120Cprogram,selectorchoosethe
referencetesticonfromthemenu.Clickthetabtocalibratetheoutput(ie.Generatorsensitivity.
2.Clicktogetthe“TestSetupBox”
3.ForChannel1,enterthedesiredvoltagelevelinthefarrightboxand
tostartthegenerator.click

4.UsingavoltmeterontheDUTleads(withaDUTconnected,determinethe
.actualvoltagebeinggenerated.Turnthegeneratoroffbyclicking

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5.Dividetheactualvoltagebythelevelyoutypedin
andRepeatfromstep3to5fortherightchannel.

CurrentSensitivityCalibration
CurrentSensitivityCalibrationchecksthecurrentcomingfromthegeneratorandshouldbedoneafterGeneratorSensitivityCalibrationasfollows.
1.ConnectaDUTorload(generallyabout30Ωisusedtothe‘GEN’connectionforChannel1.
2.Clicktostartthe“RealTimeTestBox”.

3.Connecta
currentmetertotheDUTconnectorscreatingaseriescircuitwiththeloadandreadthecurrent.ReadthecurrentgivenintheRealTimeTestBox
4.CalculatetheCurrentSensitivitybydividingthevalueintheReal
TimeTestBoxbythecurrentgivenbythemeter

and
thenclickorselectfromthemenuandthenclickthetab.EntertheCurrentSensitivity.
5.ClickandrepeatallstepsforChannel2.
EnteringVibrationSensitivity
ThevibrationsensitivityoftheaccelerometerhasalreadybeendeterminedandappearsontheCalibrationDataCardthatcomeswitheachaccelerometer.IntheBK2120Cprogram,selectorchoosethereferencetesticonfromthemenuandclickthetab.Foreachchannel,
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entertheSensitivityvaluefortheappropriateaccelerometerastheVibrationSensorSensitivityat1g.
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Testing
Beforetestingaunit,themodelfileshouldbecompletelysetupandthe
GeneratorSensitivity,CurrentSensitivityandVibrationSensitivityshouldbecalibrated.
.Tobegintesting,selectthe‘test’display,byclicking

ConnecttheDUTandstartthetestbypushingthebuttonorclickingthefootpedal34.Aftereachtest,theresultswillbesavedinfileswhichmaybeviewedandanalyzed.
StartingaNewLot/TestDataFileSelection
Youcanselectwhichdatayouwillreceiveinthe‘TestData’file.
1.Clickthe‘NewCount’icon.
2.TypetheLotNumberinthe“Lot”space.Thiswillcreateanewfileforthatlotwiththefilenamebeingthelotnumber.Selectwhethertohaveseparatefilesfortherightandleftchannelsorone‘Unifile’forbothchannelsby
checkingtheappropriatebox.Choosewhichfunctionsyouwishtoseegraphedbycheckingtheappropriateboxes.Youcanalsoselectwhetherornottosavethewavefile.
3.Clicktosaveandfinish.LotNumber/NewfilenameProductLinenumber
Machinenumber

Locationofnewfile

AppendixA

Tolearnhowtostartthetestautomaticallyoncontact,check‘autostart’intheindex.
Testscanbestartedbyusingthemousetoclickthearrowsinthetopmenueonthescreen,however,theresultswillnotbesaved.
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MenuQuickReference



-----------
:TestScreen
:ReferenceSetup(Calibration:ModelFileSetup:NewCount:TestData:RunGenerator:LeftChannelOnlyStart:RightChannelOnlyStart
:Left&RightChannelsSimultaneousStart:RealTimeTest:ExitProgram
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AppendixB
ModelFilePasswordOptions

PasswordinformationisfoundinthefileBK2120C.INI,whichislocatedintheBK2120Cfolder.InthisfileyoucanchangetheModelFilepasswordoptions.
Caution:AsthefollowingproceduresinvolvedirectlyaccessingthecontentsofaBK2120Cfile,theyshouldbeattemptedonlybyuserswhoareexperiencedindirectlyaccessingprogramfiles.Beforemakingchangesitisadvisabletomakeabackupoftheoriginalfile.
ChangingthePassword
1UsingMSNotepadoranothertexteditor(notawordprocessor,whichwilladdunseencodetothefile,opentheBK2120C.INIfile.
2Underthe“[PasswordOption]”line,changethe“Text”optionto“Text=XXXX”whereXXXXisthenewpassword.3Ensurethatthe“Active”optionissetto“Active=1”4Savethefileandclose.
Enabling/DisablingthePassword1UsingMSNotepadoranothertexteditor(notawordprocessor,whichwilladdunseencodetothefile,opentheBK2120C.INIfile.
2Underthe“[PasswordOption]”line,changethe“Active”optionto“Active=0”todisablethepasswordor“Active=1”toenablethepassword.3Savethefileandclose.
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AppendixC
ManipulatingGraphs

ChangingtheSizeofaGraph
Youcanchangethesizeofagraphbydraggingtheedgeofthegraph.
ChangingtheScaleofaGraph
Doubleclickonthegraphyouwanttochange.Thefollowingboxwillappear.Changetheminimumandmaximumvaluesoftheaxisyouwanttochange.Afterenteringthevalues,clickinanothervalueboxbeforeclicking
ChangingtheTypeofGraph
Rightclickthegraph.Choosing“GraphOption”AllowsachoiceofFrequencyDomain(FRF,FFTorTimeDomain.Youcanalsoenter“ChartSetup”fromhere.
SavingaGraph
Rightclickthegraph.ChoosetosavethedatatoanASCIIfile(numbersorasabitmap(pictureofagraph.
(ifyoudonotdothis,thelastvalueyou
putinwillnotbetakenintoaccount.
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BK2120C_Manual_English_20091019

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