Extech Instruments DCP42 Manual

A SERVICE OF

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DCP42‐en‐GB_V1.512/14

7

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.

