Extech Instruments DCP42 User manual

USERGUIDE



ModelDCP42

160WLaboratoryGradeConstantPower,

SwitchingModePowerSupply

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

DCP42‐en‐GB_V1.512/14

TableofContents

1. INTRODUCTIONANDFEATURES 4

2. SAFETY 5

3. POWERSUPPLYDESCRIPTION 6

4. CONTROLMODES 7

4.1NormalMode 7

4.2PresetMode 7

4.3SetMode 7

4.3.1SettingtheΔV/Δtvalue 7

4.3.2ActivatingtheRemoteControlMode 8

4.3.3DeactivatingtheRemoteControlMode 8

4.3.4FactoryDefaultReset 8

5. OPERATION 9

5.1PoweringtheSupply 9

5.2SwitchingthePowerSupplyONandSelf‐TestInformation 9

5.3UsingtheControlknobs 9

5.4ConnectingthePowerSupplyandrunningaTest 9

5.5KeypadLockoutfunction 9

5.6ManualOutputON/OFF 9

5.7Ammeter/WattmeterSelection 9

6.

SUPPLEMENTALFUNCTIONS 10

DCP42‐en‐GB_V1.512/14

6.1ΔV/ΔtFunction 10

6.1.2SettingtheDCgeneratorvoltagelevel 10

6.1.2SettingtheΔt 10

6.1.3GeneratingRamp‐UporRamp‐DownDCoutputcycles 10

6.2FunctionA/B/CWaveformGenerator 11

6.2.1SetFUNC(A/B/C): 11

6.2.2GeneratingWaveForm 11

6.3UpperVoltageandCurrentLimits 12

6.4RemoteSensing 12

6.4.1Connection 12

6.4.2Disconnection 12

6.5RemoteControlOperation 13

6.5.1REMOTECONTROL–METHOD1:UsingtwoexternalDCvoltagesources 13

6.5.2REMOTECONTROL–METHOD2:Usingtwo0to5KOhmvariableresistors13

6.5.3RemoteControlOutputON/OFF 14

7. PCSOFTWAREPROGRAM 14

8. AUTOMATICOUTPUTSTEPPROGRAMS 14

8.1ExternalTimedProgramWindow 15

8.2OutputON/OFFfunction 15

8.3AutomaticTimedOutputOperation 15

9. APPENDIX–ADDITIONALOPERATIONALEXAMPLES 16

10. SPECIFICATIONS 17

11. TROUBLESHOOTING 19

DCP42‐en‐GB_V1.512/14

1. IntroductionandFeatures

ThankyouforselectingtheExtechDCP42SwitchingModePowerSupply.Thisnewlyre‐designed

laboratorygradepowersupplydiffersfromaconventionalpowersupplyinthatitcancalculate

andchangethevoltageandcurrentlimitpointsaccordingtotheavailablemaximumpower.

Thereforethemaximumlimitsofthevoltageandcurrentarechangeableaccordingtotherated

power.Aconventionalpowersupplyhasonlyasetmaximumvoltageandcurrentsuchthatallof

theoperatingV&Amustfallwithintheselimits.TheDCP42offerscostsavingandspacesaving

advantagesasoneconstant‐powerpowersupply

candotheworkofseveralconventionalpower

supplies.



TheDCP42ishighlyefficient,incorporatesupgradedSMPScircuitrywithsmallformfactor,benefits

fromanautomaticcross‐overforCCandCV,hasthree(3)Voltage/Currentpresets,andcanbe

remotecontrolled.TheDCP42isperfectforsolvingavarietyofloadingconditionsandapplications.

Featuresincludethefollowing:



 Dualaction(Course/Fine)tuningprovidessmooth,accurate,andquicksettingof

Voltage/Current

 Setting,changing,andverifyingthecurrentlimitlevelisconvenientandcanbe

performedwithoutoutputpolespiking

 TheRemoteControlfeaturepermitsoutputON/OFFandVoltage/Current

adjustments

withouttheneedtotouchthefrontpanelofthepowersupply

 TheUSBportoffersPCconnectivityforprogrammingandrunningramp/soakcycleswith

20programmablesetsofVoltage/Currentandvaryingtestdurations(upto999cycles)

 TheDCrampandwaveformgeneratorcaneitherbe

panelsetorsetbythesupplied

softwarewhichpreviewsthefinalwaveform.

 ApplicationsandindustrieswheretheDCP42canbeemployedincludelaboratory,

telecommunications,production testing,fieldtesting,DCnetworkpowering,andmore

 Three(3)userprogrammableVoltage/Currentsettingsofferquickrecalloffrequently

usedtestsettings.

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Thisdeviceisshippedfullytestedandcalibratedand,withproperuse,willprovideyearsofreliable

service.Pleasevisitourwebsite(www.extech.com)tocheckforthelatestversionofthisUser

Guide,ProductUpdates,andCustomerSupport.

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DCP42‐en‐GB_V1.512/14

2. Safety

Thismanualcontainsimportantsafetyandoperationinstructionsforcorrectuseofthepower

supply.Readthroughthemanualandpayspecialattentiontothemarkingsandlabelsofthisunit

andequipmenttobeconnected.

Payspecialattentiontothesetwotypesofnoticesusedinthismanual:

WARNING:

Failuretoobservethiswarningmaycauseinjurytopersonsanddamagetopower

supplyorconnectedequipment.

CAUTION:Failuretoobservethiswarningmayresultindamagetoequipmentand

improperfunctioningofthepowersupply.

WARNING

 Donotusethispowersupplynearwater

 Donotoperateortouchthispowersupplywithwethands

 Donotopenthecasingofthepowersupplywhenitisconnectedtoacmains

 Referallservicingtoqualifiedservicepersonnelonly

 BeforereplacingtheACfuse,determinethecauseandclearupthecausefirst

 ReplacetheACfusewiththesametypeandratingastheoriginalfuse

 ThemaximumoutputvoltageoftheDCP42exceeds60VDC,avoidtouchingthemetal

contactpartsattheoutputterminals

CAUTION

 Useagrounded3pinACsource

 Thisunitisintendedfor

indooruseonly

 Donotoperateorplacethisunit inahumid,dustylocat ion 

 Donotoperatethisunitin directsunlightornearanyheatsource

 BeforepluggingintolocalACmains,checktheratinglabelatthebackoftheunit

 Donotblock

anyventilationopeningsoftheunit

 Thisunitmustbeusedwithinthespecifiedrating;regularexcessivecontinuousloadingmay

causedamagetothepowersupply

 Thegaugesizeoftheinputpowercablemustbeatleast0.75mm

andthetotallengthof

powercablemustnotexceed3m

 InputFuseRecommended:T3AL250V(3ATime‐Lag)

ENVIRONMENTALCONDITIONSFOROPERATION

 10‐80%R.H.(RelativeHumidity)

 Altitudeupto2000m(6561ft.)

 Installationcategory:CAT2

 Pollutiondegree:2

 Mainssupplyvoltagefluctuation

upto±10%ofnormalvoltage

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DCP42‐en‐GB_V1.512/14

3. PowerSupplyDescription



(1)LEDpanelmeterdisplaywithCC/CV/WIndictor

(2)RemoteControlIndicator(RemoteControl/USBmode)

(3)OutputVoltageControlKnob

(4)OutputCurrentControlKnob

(5)PowerON/OFFSwitch

(6)6buttonKeypad(withillumination):

‐PresetKeyd1,2&3

‐MenuKey(ShiftKey)

‐Lock/Unlock

Key(A/WmeterKey)

‐OutputON/OFF(ΔV/ΔtKey)

(7)OutputSafetyJacks(Rated10A)

(8)USBRemoteControlport(Foraccesstocomputertoruncyclicaloperationwithprogrammable

voltage,current,periodtimeandcycle)

(9)RemoteSensingTerminal

Warning!Shortingtheremotesensingterminalorconnectingthe

sensingterminalwiththe

polarityreversedwilldamagethepowersupply

(10)RemoteControlTerminal

(11)ACInletsocket(withfuseholder)

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DCP42‐en‐GB_V1.512/14

4. ControlModes

Therearefourcontrolmodesforthepowersupply:NORMAL,PRESET,SET,andREMOTECONTROL

modes.ThepowersupplyisfactorypresettoNormalModewithmaximumcurrentlevelCC.

4.1NormalMode

Thisisthefactorydefaultmode;thepowersupplyoutputVoltageandCurrentarecontrolledby

thedualactiongainknobs.

1. Pushtheknobstotogglethecoarseandfinetuning,noticethesubtlechangesin

brightnessoftherelatedLED.

2. Adjusttheknobstothedesiredvaluesusingcoarseandthenfinetuning.

3. Tocheckthepresetcurrentlevel,turntheCurrentKnoblightlyinanydirection.

4. Thedisplaywillresumeitsnormalbrightnessafterafewsecondstore‐affirmthe

adjustment.

4.2PresetMode

1. TherearethreepresetoutputsP1/P2/P3available.

2. PressthePresetbutton(1,2,or3)toenterthepresetmode(thebutton’slightwill

switchON).

3. Thepresetvaluesarefactorysetasshowninthetablebelowandareretainedevenafter

theunithas

beenpowereddown.

4. Theusercanchangetheseoutputsettingsusingthevoltageandcurrentknobs.



RecallNo. OutputVoltage OutputCurrent

P1 5V Maximum

P2 13.8V Maximum

P3 40VMaximum

4.3SetMode

EntertheSetModebypushingandholdingtheMENUbuttonfor3seconds.IntheSetModethe

usercanadjusttheΔV/Δtvalue,accesstheremoteControlmode,orperformaFactoryReset

recallfunction.Note:Ifnoselectionismade after10secondsthepowersupplydefaults

toits

priorsettings.



4.3.1SettingtheΔV/Δtvalue

a.PressandholdtheMENUbuttonfor3secondstoaccesstheSetMode.

b.TurntheVoltagecontrolknobuntilthepanelmeterdisplays“dudtSet”asshownbelowand

thenpresstheVoltagecontrolknobtoenter

theΔV/Δtsettingmode.



c.AdjusttheVoltageandCurrentcontrolknobsasdesiredtosettheΔV/Δtvalue.Furtherdetails

areprovidedinthededicatedsectionforΔV/Δtmodelaterinthisguide.

d.Whenfinished,presstheVoltagecontrolknobtoconfirmandreturntoSetmenu

e.Pressthe

MenukeytoexittheSetmenu

f.TostarttheΔV/Δtfunction,presstheSHIFTbuttonandthenpresstheΔV/Δtbuttontorun,

g.TostoptheΔV/Δtfunction,presstheSHIFTbuttonandthenpresstheΔV/Δtbuttonagain.

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DCP42‐en‐GB_V1.512/14

4.3.2ActivatingtheRemoteControlMode

a.PressandholdtheMENUbuttonfor3seconds.

b.TurntheVoltagecontrolknobuntilthepanelmeterdisplays“rCSet”asshownbelowand

thenpresstheVoltagecontrolknobtoconfirmentryintotheremotecontrolmode.



c.TurntheCurrentcontrolknobtoselectremoteYESorNO.

d.PresstheVoltagecontrolknobtoconfirmandtoreturntotheSetmenu.

e.PresstheMenubutton toexittheSetmenu.

f.DetailsoftheremotecontrolmodearelocatedinthededicateRemote

Controlsectionlaterin

thisguide.

Note:AfteractivatingtheRemoteControlMode,allfunctionkeyslocatedonthefrontpanelwill

belocked(theLock/UnlockbuttonlightswitchesON).



4.3.3DeactivatingtheRemoteControlMode

a. PresstheLock/Unlockbuttontounlockallofthefunctionkeys

b. Repeat

stepsatocinthe‘ActivatingtheRemoteControlMode’sectionaboveandset

RemoteControltoNOandthenpressthevoltagecontrolknob.



4.3.4FactoryDefaultReset

a.PressandholdtheMENUbuttonfor3seconds.

b.TurntheVoltagecontrolknobuntilthepanelmeter

displays“FACSSEt”asshownbelowand

thenpresstheVoltagecontrolknobtoconfirmentryintotheFactoryResetmode.



c.TurntheCurrentcontrolknobtoselectYesorNo.

d.PresstheVoltagecontrolknobtoconfirmandtoreturntotheSetmenu.

e.PresstheMenubutton toexittheSetmenu.

f.ThePowerSupplywillrebootandreverttoitsFactoryDefaultsettings.



DCP42‐en‐GB_V1.512/14

5. Operation

Note:TheDCP42TotalOutputVoltageRangeis42VDCandtheTotalRatedCurrentis0to10ADC



5.1PoweringtheSupply

ChecktheratinglabelofthepowersupplyandensurethatitcomplieswiththeACmainsvoltage

thatistobeused.ConnectthepowersupplytotheACMainsusingtheprovidedpowercord.

5.2SwitchingthePowerSupplyONandSelf‐TestInformation

Thepowersupplywillperformaseriesofself‐testswhenitisswitchedON.TheLEDandother

indicatorsonthefrontpanelwillilluminateinsequence.Whenthecoolingfanisbeingchecked,

ahighspeedwindsoundcanbeheard.Aftertheself‐tests,theCV,V

andALEDindicatorsarelit

andtheunitdisplaysvoltageand0.0current.TofindtheCCcurrentlevel,turnthecurrent

controlknoboneclickineitherdirection.Thecurrentdisplayreturnsto0.0afterafewseconds.

5.3UsingtheControlknobs

Therotaryencodercontrolknobshavefineandcoarsetuningwith‘clicking’movement.Push

theknobstotogglebetweencoarseandfinetuning,noticethesubtlechangesinbrightnessof

therelatedLED.Adjusttheknobstothedesiredvaluesbyusingcoarseandthenfinetuning.

Thedisplaywillresumeitsnormalbrightnessafterfewsecondstoconfirmanadjustment.

5.4ConnectingthePowerSupplyandrunningaTest

1. Connecttheequipmentundertesttothepowersupply.Red(+)isconnectedtothepositive

polarityinputoftheequipmentandBlack(‐)isconnectedtothenegativepolarityinputof

theequipment.

2. SwitchONthepowersupplyfirst;thepanelmeter&greenCVIndicatorshouldilluminate.

3. Next,switchONtheequipmentundertest;thepanelmeter&greenCVIndicatorshould

remainlitingreen.

4. Testingcannowbegin.

5. Whenfinished,switchOFFtheequipmentundertestfirstandthenswitchoffthepower

supply.

5.5KeypadLockoutfunction

1. PressLOCK/UNLOCKtolockorunlockallofthefunctionbuttonsandcontrolknob sonthe

frontpanel.

2. TheLOCK/UNLOCKbuttonlightswitchesONwhenthepush‐buttonsarelocked.

5.6ManualOutputON/OFF

1. PressOUTPUTON/OFFbuttontomanuallysettheoutputONorOFF. 

2. TheOUTPUTON/OFFbuttonlightswitchesONwhentheoutputisON.

5.7Ammeter/WattmeterSelection

1. WiththeoutputONandallpresetsOFF,pressSHIFTandthenpressPRESET.

2. PresstheSHIFTbuttonagainandthenpresstheLOCK/UNLOCKbuttontochangefrom

AmmetermodetoWattmetermode.

3. Tochang e backtoAmmetermodefromWattmetermode,presstheSHIFTbuttonandthen

presstheLOCK/UNLOCKbutton.

DCP42‐en‐GB_V1.512/14

6. SupplementalFunctions

6.1ΔV/ΔtFunction

Thereare3DCvoltagegeneratorsettings(A,B,andC).

Preset1=A

Preset2=B

Preset3=C

ΔVa‐b(fromvoltagelevelAtovoltagelevelB).

Δta‐b(timeinsecondsfromvoltagelevelAtolevelB,thistransittime

isadjustablefrom0to20

seconds)

6.1.2SettingtheDCgeneratorvoltagelevel

Thereare3generatorvoltagelevelspresets(A,B,andC).

PressthePresetbutton1,2and3andadjustthevoltagetothedesiredvalue.



6.1.2SettingtheΔt

Thereare6setsof

Δtavailable,turningtheVoltagecontrolknobcyclesthrough thefollowing

sequence:AB→BA→AC→CA→BC→CB

UsingtheABsettingasanexample,turntheVoltagecontrolknobuntilA‐bappearsonthe 

voltmeterdisplayandthenturntheCurrentcontrolknobtosettodesiredtransittimeΔt(5

secondsforexample).



6.1.3GeneratingRamp‐UporRamp‐DownDCoutputcycles

Rampupgeneratorexample:SetA=5V;B=10V;Δta‐b=5seconds

1. ConnectasuitableloadtotheoutputandturnONtheoutputbypressing

the“OUTPUT

ON/OFF”button;notetheoutputLEDindicator.

2. Push“Preset1”andnotetheoutputvoltageof5V.Press“Preset2”andnotethatthe

outputvoltagerisesto10Vin5secondsshowingarampupvoltage(theoutputwill

remainat10V).

3. Pressing“Preset1”

willnowgeneratearampdownvoltagefrom10Vto5Vin5seconds

andwillremainatthe5Vlevel.



Note:Thefinaloutputvoltagelevelwillbethelastvoltagelevelgenerated.



DCP42‐en‐GB_V1.512/14

6.2FunctionA/B/CWaveformGenerator

Preset1=A

Preset2=B

Preset3=C

FUNC(A/B/C)setstheduration(from0to600seconds)thatthevoltagegeneratorremainsON

atthespecifiedoutputvoltagelevelbeforemovingtoanothervoltagelevel.



6.2.1SetFUNC(A/B/C):

1. EntertheΔV/Δtsettingfirst(RefertotheSetModesection4.3.)

2. Turnthe VoltagecontrolknobtoselectthedesiredfunctionandthenturntheCurrent

controlknobtosetthetimeperiod(0to600seconds)forthechosenvoltagelevel.

PressingtheCurrentcontrolknobtogglescoarseandfinetuningofthetimeperiod.

4. Togeneratewaveforms,theFuncA/B/CbuttonisusedinconjunctionwithΔV/Δtbutton(the

timeperiodfromonevoltageleveltoanothervoltagelevel)

5. Usingtheabovefunctionssimultaneously,3reversiblepairs(AB&BA,BC&CB,AC&CA)can

beusedtogeneratewaveforms.



Example1:Pulsewaveformwith3secat10Vand1secat5V.

SetA(Preset1)=5V,setB(Preset2)=10V

SetFuncA=1secondbyturningtheCurrentcontrol

knob

FuncB=3secondsusingthesameprocedureasabove

SetΔta‐b=0,SetΔtb‐a=0



6.2.2GeneratingWaveForm

TogeneratethewaveformpushSHIFTandthenpresstheΔV/Δtbutton

ThewaveformwillrepeatcyclicallyuntiltheSHIFTbuttonandthentheΔV/Δtbuttonispressed.



Example2:Trianglewaveform

SetA=5V,B=10V

SetΔta‐b=3seconds,SetΔtb‐a=3seconds

SetFunc.A=3seconds,SetFunc.B=3seconds



Note:Thewaveformgeneratorcanbeoperatedviatheremoteprogrammingsoftware(with

waveformpreviewandgraphicaldataloggingoutputpresentationfeatures).Detailsareprovided

inthesection4titled‘PCSoftwareProgram’.

PleaseverifythatthePresetkeysarebothlitandthatoneisflashing.Theflashinglightwill

jump

fromonetotheother,AtoB,thenBtoA.ThewaveformwillrepeatcyclicallyuntilSHIFTand

thenΔV/Δtarepressedagain.Examples3,4,and5areprovidedinAppendixAlaterinthis

guide.

DCP42‐en‐GB_V1.512/14

6.3UpperVoltageandCurrentLimits

Whenthevoltageorcurrentattheoutputterminalexceedsthemaximumallowablelimits,the

outputwillautomaticallyswitchOFF.Thisadditionalprotectionfeatureisnecessaryforapower

supplywithsuchawiderangeofvoltageandcurrentcapabilities.

TosettheUVL:



1. TosettheUVL:PresstheSHIFTbuttonandthenpresstheVoltagecontrolknob.The

voltmeterwillshowthecurrentlimitsettingandtheAmmeterwillshowSuul.

2. Turnthe Voltagecontrolknobtothedesiredlimitvalue.PressSHIFTtoconfirmandto

returntonormaloperation.

3. TosettheUCL,pressSHIFTandthenpresstheCurrentcontrolknob.TheAmmeterwill

showthecurrentlimitsettingandtheVoltmeterwillshowSUCL.

4. Turnthe Currentcontrolknobtothedesiredlimitvalue.PressSHIFTtoconfirmandto

returntonormaloperation.

Note:

TheUVLandUCLsettingsdefaulttothemaximumoutputvalue.

6.4RemoteSensing

Note:ObservewarningsdisplayedbythePowerSupply,anincorrectdisconnectionsequence

willdamagethePowerSupply

Warnings:NevershorttheRemoteSensingTerminaland alwaysdisconnecttheRemoteSensing

Terminalfirst.

6.4.1Connection

1.Firstcompletethepowerconnectionsbetweenpowersupplyandequipment.

2.Checkandensurethatthe

powerconnectionsaresecure.

3.MakeconnectionsbetweenRemoteSensingandequipment.



Warning!:NevershorttheRemoteSensingTerminaland neverconnecttheRemoteSensing

Terminalinreversepolarity



ThediagrambelowshowstheconnectionsforRemoteSensing,Poweroutput,andEquipment.

TheremotesensingwireshouldbeATLEAST

22AWGwiresize.



6.4.2Disconnection

Warning!Incorrectdisconnectsequenceswilldamagethepowersupply

1.Firstdisconnecttheremotesensingconnections.

2.Thendisconnectthepowerconnectionsbetweenthepowersupplyandequipment.



DCP42‐en‐GB_V1.512/14

6.5RemoteControlOperation

Therearetwomethodsforremotelycontrollingcurrentandvoltageadjustments.Currentmust

becontrolledforbothmethodsotherwisetheunitwilldefaulttoCCmode.



6.5.1REMOTECONTROL–METHOD1:UsingtwoexternalDCvoltagesources



RemoteSocketPinAssignmentforexternalvariablevoltagesource

PIN FUNCTIONS REMARKS

1 InternalDC+5V Lowerthan50mA

2 Voltageadjust 0to5V

3 Currentadjust 0to5V

4 Ground

5 OutputOFF Shorttoground

6 N.A.

7 N.A.

8 N.A.



Checktheoutputvoltagerangeofthepowersupplybyvaryingtheexternalvoltagesource.

Shortcircuitthemainoutputwith14AWGwiretochecktheCCsettingonthe displaywhile

varyingtheexternalvoltagesource.



6.5.2REMOTECONTROL–METHOD2:Usingtwo0to5KOhm

variableresistors

RemoteSocketPinAssignmentforexternalvariableresistor

PIN FUNCTIONS REMARKS

1 InternalDC+5V Oneendofresistor

2 Voltageadjust Variablelegofresistor

3 Currentadjust Variablelegofresistor

4 Ground Otherendofresistor

5 OutputOFF Shorttoground

6 N.A.

7 N.A.

8 N.A.



Checktheoutputvoltagerangeofthepowersupplybyadjustingthe5Kohmvariableresistor.

Shortcircuitthemainoutputwith14AWGwiretochecktheCCsettingonthe displaywhile

adjustingthevariableresistor.

DCP42‐en‐GB_V1.512/14

6.5.3RemoteControlOutputON/OFF

RemoteoutputON/OFFcontrolcanbeactivatedinanyofthemodesNormal,Preset,Set,and

Remote.Reviewtheconditionsbelow:



 Bydefault,Pin5isopenandtheoutputisON.

 ShortingPin5toPin4(ground)switchestheoutputOFF.

 WhentheoutputisOFF,theC.V.&C.C.LEDswillflash. Thepresentoutputvoltageand

currentsettingwillbeshownonthepanelmeter.

 Theusercanadjusttheoutputusingthevoltage&currentcontrolknobtothedesired

valuewhentheoutputisOFF.



Remark:Useonlythe8‐pinremoteplugprovidedandconnectwith22AWGwires.See

diagrambelow.



Note: Pin numbers are marked on the black area of the socket

7. PCSoftwareProgram

ThismeterhasthecapabilitytoconnecttoandcommunicatewithaPC.Toinstallandusethe

software,pleaserefertotheinstructionsprovidedonthesuppliedCD‐ROMand/ortheinstructions

providedintheHELPUtilitywithinthesoftwareprogram.



Checkthesoftwaredownloadpageofthewebsitewww.extech.comforthelatestversionofthePC

softwareanditsoperatingsystemcompatibility.

8. AutomaticOutputStepPrograms

TousetheAutomaticOutputSteputilitytheusermustfirstbecomefamiliarwiththePC

interfaceandthesuppliedsoftware.Toinstallandusethesoftware,pleaserefertothe

instructionsprovidedonthesuppliedCD‐ROMand/ortheinstructionsprovidedintheHELP

Utilitywithinthesoftwareprogram.Oncefamiliaritywiththesoftwareisachievedrefertothe

instructionsbelow:



TheunitcanbeexternallyprogrammedviaaPCtorun20steps,eachstepwithapreset

voltage/currentlimitingvalueandapresettimeperiodof1secondto99minutes.Thetimed

programcanbesetto

runonecycleoruptoaninfinitenumberofcycles.



DCP42‐en‐GB_V1.512/14

8.1ExternalTimedProgramWindow



ClearTable:DeletealldataintheDisplayTableandpreparefornewdataentry.

Run(Stop):TorunandstoptheTimedProgram.

RunningCycle:Enterthenumberofdesiredrunningcycleshere.



Thenumericalrangeforcyclingis0‐999.Notethatthemaximumcyclescanbe setto‘infinite’

when“0”cyclesisentered.TheExternalTimedProgramallowstheusertosettheoutputeither

ONorOFFbyselectingtheboxesinthelastcolumn.



8.2OutputON/OFFfunction

 OutputONTicked:OutputisONforthatstep

 OutputONUn‐ticked:OutputisOFFforthatstep.



8.3AutomaticTimedOutputOperation

1.Clearolddatainthetablebyclicking[ClearTable].

2.Enterdatainthetableusing'Up‐Down‐Left‐Right'keysonPCkeyboardfornewlocations.

3.Datathatexceedtheratedvoltageandcurrentwillnotbeaccepted.

4.VoltagesthatexceedtheUVL(UpperVoltageLimit)

willnotbeaccepted.

5.Ifretrievedorentered,datathatexceedthepresetUpperorLowerLimitsettingforvoltage/

current/timeperiodswillswitchtoredincolorandwillnotbeaccepted.

6.Whentherunningtimeperiodofanystepissettozero

minutesandzeroseconds,thisstep

becomestheterminatingstepandthecyclewillendatthisstep.Intheaboveexamplethereare

4stepseachwitha2secondtimeperiod,ifstep3issettozerominutes&seconds,theprogram

willonlycyclestep1and

2andwillnotgotostep4.

7.Enterthenumberofdesiredrunningcycles.

8.Click[Run]toruntheExternalTimeProgram.TheExternalTimedProgramfeatureallowsthe

usertosettheoutputeitherONorOFFbyselectingtheboxesinthelastcolumn.

DCP42‐en‐GB_V1.512/14

9. Appendix–AdditionalOperationalExamples

ExamplesofFuncA/B/CandWaveFormGeneratorFeatures



TheseexamplesarecontinuedfromExamples1and2inSection6.2earlierinthisguide.



Example3‐Irregularwaveform

SetA=5V,B=10V

SetΔta‐b=1second,SetΔtb‐a=2seconds

Set

Func.A=3seconds,SetFunc.B=3seconds



Example4‐Irregularwaveform

SetA=5V,B=10V

SetΔta‐b=2second,SetΔtb‐a=2seconds

SetFunc.A=2seconds,SetFunc.B=6seconds



Example5‐Irregularwaveform

SetA=5V,B=10V

SetΔta‐b=2second,SetΔtb‐a=0seconds

SetFunc.A=4seconds,SetFunc.B=3seconds



Example6‐Irregularwaveform

SetA=5V,B=10V

SetΔta‐b=4second,SetΔtb‐a=4seconds

SetFunc.A=2seconds,SetFunc.B=2seconds

DCP42‐en‐GB_V1.512/14

10. Specifications

Output

VariableOutputVoltage(LimitedtoO/P160W)0‐42VDC

VariableOutputCurrent(LimitedtoO/P160W)0‐10A

NominalOutputPower(42V/3.8A)160W

PresetOutputs

Preset1(P1)Voltage:5V±0.2V,Current:10A±0.2A

Preset2(P2)Voltage:13.8V±0.2V,Current:10A±0.2A

Preset3(P3)Voltage:

20V±0.2V,Current:4.0A±0.2A

VoltageRegulation

Load(0‐100%RatedCurrent)≤50mV

Line(90‐264VACVariation)≤10mV

CurrentRegulation

Load(10‐90%RatedVoltage)≤50mA

Line(90‐264VACVariation)≤10mA

Ripple&Noise

Ripple&Noise(RMS)Voltage≤8mVrms

Ripple&Noise(peak‐peak)Voltage≤80mVp‐p

CurrentRipple&

Noise(peak‐peak)≤50mA

MeterType&Accuracy

VoltageMeter4DigitLEDDisplay±(0.1%+5counts)

CurrentMeter4DigitLEDDisplay±(0.1%+5counts)

Resolution

OutputVoltageResolution0.02V

OutputCurrentResolution0.01A

SettingAccuracy

OutputVoltage±(0.2%+0.05)

OutputCurrent±(0.2%+0.05)

OutputRise&FallTime

OutputT‐ON(50%LoadCurrent)≤80ms

OutputT‐ON(100%LoadCurrent)≤1200ms

OutputT‐OFF(50%LoadCurrent)≤90ms

OutputT‐OFF(100%LoadCurrent)≤50ms

Power

OperationInputVoltageRange90–264VAC

OperationInputVoltageFrequencyRange45‐65Hz~

NoLoadInputCurrent

(230Vac/100Vac):≤220mA

Full

LoadInputCurrent

(230Vac/100Vac):≤1.0A/2.3A

PowerConsumption

(230Vac/100Vac):≤190W/200W@42V/3.8A

Efficiency

(230Vac/100Vac):≥86%/84%@42V/3.8A

DCP42‐en‐GB_V1.512/14

SwitchingFrequency

45‐55KHz~

TrackingOverVoltageProtections

O/P0‐10V:SetVoltage+(1.0±0.3V)

O/P10‐42V:105‐125%ofsetvoltage

PowerFactor

ControlPowerfactorcorrection:>0.91atoptimalload

CoolingMethod

NaturalConvection

LeakageCurrent

≤2mA

Protections

Adjustableuppervoltagelimit,Adjustableuppercurrentlimit,

ShortCircuit,Overload,

OverTemperature,TrackingOVP

InputFuse

T3.15AL250V



Safety&EMC

SafetyStandardCE:EN61010

WithstandingVoltageI/P‐O/P:3.0KVac,I/P‐F/G:1.5KVac,O/P‐F/G:0.5KVac

InsulationResistanceI/P‐O/P,I/P‐F/G,O/P‐F/G:100Mohm@500Vdc

EMCCE:EN55011

HarmonicsCurrentEmissionEN61000‐3‐2



VoltageFluctuations&FlickerEN61000‐3‐3

EMCImmunityEN61000‐6‐1



Environmental

WorkingTemperature0to+40°C(32to+104°F)

WorkingHumidity10‐80%RHNon‐condensing

StorageTemperatureandHumidity‐15to+70°C(5to158°F)10‐85%RHNon‐condensing

PollutionDegreeClass2



General

CaseMaterialPolycarbonateFrontPanelandElectro‐GalvanizedSteelEnclosure

CaseProtectionIP20

ConnectionDia.4.0mmSafetyJackx3(OutputPositive,NegativeandFunctionGround)

Dimensions(WxHxD)200x90x250mm(7.9x3.6x10inch)

Weight2.5kg(5.5lb)



DCP42‐en‐GB_V1.512/14

11. Troubleshooting

OUP:OverVoltageProtection

Thisunithasabuilt‐intrackingovervoltageprotectionfeature.Intheeventofoutputvoltage

becominggreaterthanthesetvalue(seespecifiedrangefromspecificationstable),protection

willbetriggeredandtheoutputpowerwillbecutoffandOUPwarningappearsasbelow.



Toresetthewarning,switchofftheunitandremoveallloading.

Switchtheunitbackonagainanditshould resumenormaloperation.

Ifthisproblempersists,pleasecontactthecustomercaredepartmentorthepointofpurchase.



OTP:OverTemperatureProtection

Thereisathermosensorinsidetheunittomonitorandpreventtheunitfromundulyheating

internally.WhenanOTPerroroccurs,thereisnooutputandthefollowingwarningwillappear

ontheLEDdisplay.



Whenthiswarningappears,switchofftheunitandremoveallloading.

Checktheloadandoutputsetting.Allowtheunittocoolforatleast30minutes.

Checktoseeifanyventilationholesareblocked,alsocheckthatthereissufficientclearance

aroundthepowersupply.

Listencarefullyfortheshortwindsoundemanatingfromthecoolingfanwhentheunitis

switchedONagain.Ifthewindsoundisnotdetected,thefanmaybefaulty;donotusethe

powersupplyinthiscase,contactthecustomercaredepartmentortheagentfromthepointof

purchase.



OCP:OverCurrentProtection

NormallytheoverloadprotectionissustainedbytheCCconstantcurrentmode.WhentheCC

modefailsandgoesundetected,seriousdamagetothetestpieceorloadmayoccur.TheOCPis

usedtominimizetheextentofdamagetotheloadsintheeventofpowersupplyfailure.

Switchoffthepowersupplyassoonasthiswarningisseen(asshownbelow).



Toresetthiswarning,removeallloadingandpresstheOUTPUTON/OFFbutton.

Switchtheunitbackonagainanddoublecheckwithcaution.

Ifthisproblempersists,pleasecontactthecustomercaredepartmentorconsultwiththeagent

atthepointofpurchase.



Allrightsreservedincludingtherightofreproductioninwholeorinpartinanyform

Extech Instruments DCP42, Extech DCP42 User manual

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