JYE Tech DSO112A User manual

QuickGuide
DSO112ADigital Oscilloscope
Rev.02
Resistive
touchpanel
PanelandConnectors (Pushing[P]button)
BasicOperations
Testsignaloutput
Inputforsignal
tobemeasured
[P]Button
USBsocket
(microUSB)
Horizontal
Position Batt/USB
indicator
Trigger
position
Enter
Menu
Vertical
position
Sensitivity
Couple Timebase Triggermode
Triggerslope
Trigger
level
Scope
state
(MCXfemale) (MCXfemale)
Fig.1
Fig.2
Fig.3
1.Beforefirst-timeuse
Closethe internalbatteryswitch(seeFig.2)bysliding
ittowardsthe USB connectorwitha small stick.
Charge batteryformorethan10hoursbyconnecting
thescope toa USBpower.
Fig.4
①
②
②
①Connecttoreference(ground)
Connecttosignaltobeviewed
2.Power On/Off
Power-on Short press[P]buttonwill turnDSO112on.
Power-off Therearethreewaystoturntheunitoff.
1) EnterMenuandtouchbutton.
PwrOff
2) Hold[P]buttonforabout3secondsunderRunning
orHoldstate.
Pwr Off
3) Hold[P]buttonforabout15secondsunderanystate.
3.Connectingtosignaltobeviewed
Toviewasignalfirstconnectthe blackcliptothereferenceponit(ground)ofcircuitundertest.
Thenconnect theredcliptothesignalofinterest.
Bootloaderscreen
~2seconds Push[P]button
Hold[P]button
Push
[P] button Setupscreen
Bootingtomainprogram
Menu
Selectsensitivityandcouple Selecttimebase Selecttriggermode,slope,
position,andsource.
HOLDstate
Touchandscrollverticallywithin
thelefthalfof paneltochange
verticalposition.
Touchandscrollverticallywithin
therighthalfofpaneltochange
triggerlevel.
Touchandscrollhorizontallyover
thewholepaneltochange
horizontalposition.
Touch
Touch Touch Touch
Touch
PackingList
1xDSO112Aoscilloscope
2xMCX-clipcables
1xUSBcable
1x3.7V/1200mAhbattery(optional)
Tip: It isrecommendedtochargebatteryfor
more than10hoursbeforefirst time use.
4.UsetheScope
Fig.5
TouchPanelCalibration
5.Menu
Buttons Functions
AlignVPosindicatorto0Vtrace.
Remarks
SavecapturedwaveformdatatointernalEEPROM. The
mostrecentlycaptureddatawillbesavednomatterthis
functionisexecutedinRunningstateorHoldstate.
RecallsavedwaveformdatafromEEPROM.The
parametersusedforthedatawillalsoberecalled.
RecalledwaveformisalwaysdisplayedinHoldstate.
Sendwaveformdataviaserialconnection(virtualCOM
portonUSB).Themostrecentlycaptureddatawillbe
sent.
Restorefactorydefaultsettingsforvarious parameters
(exceptAutoOfftime).
Press[P]buttonatSetupscreenwillalsoperformthe
samefunction.
Bringup TestSignalFrequency”screenwheretest
signalfrequencycanbechanged.
TurncursorTorOn/Off.ΔΔV
Turnvoltageread-outsOn/Off.Theunitofvoltageread-
outisthesameasunitofverticalsensitivity.
Turnfrequencyread-outOn/Off.
Bringup AutoPower-offTime”screenwhereauto
power-offtimecanbeselected.
Tip:
Forresistivepaneltouchingwith
fingernailwillhave bettereffects
Factorydefaultsetting:2minutes
Factorydefaultsetting:1KHz
1. Batteryvoltagemustbewithin3.7V-5Vrange.
2. Maximuminputvoltageis50Vpk.
3. Do not attempt to measurelivepowerdirectly.
Attention
Powerup
TheexistingdatainEEPROMwillbeover-written.
WaveformdataaresentinCSVfileformat.XModem
protocolisusedforthetransfer. USBdriverforCP2102
isrequired(refertothesection USBConnection”).
Saveorloadpresetscopeparameters. Navigatewith <<”and >>”buttons.Toucharowto
highlightitanduse Save”or Load”buttontoexecute.
Trigger
source
(Ext.triggerinput)
Batteryswitch
On
Off
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AutoPowerOff
Oscilloscope willautomaticallyshutdownifrunningonbatteryandnotouchactivityforcertain
periodoftime.The factorydefaultsettingforthistimeis2min.Itcanbe changedbyentering
Menu->MoreandtouchingAutoOffbutton.
DisplayVmax,Vmin,Vpp,Vavr,andVrmsonscreen.
Notfunctionwhentimebaseis setto50ms/divorslower.
Displayfrequencyonscreen.
Notfunctionwhentimebaseis setto50ms/divorslower.
Dashboard
Bringupdashboardforquickpresetaccess.

AdvancedOperations
InordertouseUSBfunctionthehostwhichDSO112Aistocommunicatewithisrequired
toinstalldriversupportingthe USB-Uartbridge CP2102. Pleaseuse thefollowinglink
todownloaddriverandinstallit (refertodocumentsaccompanying).
www.silabs.com/products/mcu/pages/usbtouartbridgevcpdrivers.aspx
USBConnection
SerialPortParameters
Forthe mainfirmwareserialportparametersarefixedto115200bpsand8-N-1.
Forthe bootloaderserialportparametersare fixedto9600bpsand8-N-1.
WaveformData Upload
Please referDSO112AUserManualfordetailedinstructions.
TheDSO112AUserManual isavailableat
ΔΔTcursors andVcursors
ΔTandcursorscanbe turnonoroffbytouchingorbuttonat themenuscreen.ΔV
Tochangecursorpositiontouchthecursoryouwant tochange tohighlight it. Thentouch
anywhereofthepanelandscrollhorizontally(for.Youwillseethe
highlightedcursormovesandreadoutschangeaccordingly(see Fig. 6andFig.78).
ΔΔT)orvertically(forV)
Maintenance
ChargingtheBattery
DSO112Acontainsabuilt-insmartLi-ionbatterycharger.Simply
connectthe unittoUSBpowersupplychargingwillstart
automatically.AredLEDwilllight up(whichcanbeseenfrom
outside)indicatingchargeisundergoing.Thechargerwillstop
automaticallyoncethebatteryisfullycharged.(Fig.8)
TouchPanelCalibration
Thetouchpanelhasbeencalibratedbeforeshipping.Incaseofthe
touchpaneldoesn’tworkproperlyitcanbe re-calibrated.Please
followthestepsbelowtoperformtouchpanelcalibration.
1) Powerupthescope.At themainbootingscreenpush[P]
buttontoenterSetupmode.
2) Pressandhold[P]buttoninSetupmode toentertouch
panelcalibrationstate, asshowninFig.9.
3) Usea pointedobjecttotouchthecenterofeachcross8times,
asaccuratelyasyoucan.Youwillsee threecrosses,one afteranother. Donottouchmore
than8timesforeachcross.
4) Afteryoufinishthethirdcrosstouchanywhereofthepaneltoverify.Youshouldseea
smallgreencrossfollowsthepointsyoutouchwithsomeerror(theerrorisusually
smallerthan1mm).Ifyouseetheerrorslargerthan2mmyoucanre-dothecalibration.
5) Exitcalibrationbypressing[P]button.
UpgradingFirmware
Newfirmware canbedownloadedtoDSO112Abythepre-installedBootloader.Pleasefollowthe
stepsbelowtoperformfirmwarechange.
1) Downloadnewfirmware(itisa filewith .hex”extension)toyoucomputer.
2) Downloadatandinstallitto
yourcomputer.
avrubd.exe http://www.jyetech.com/Support/avrubd.rar
3) ConnectDSO112AtoPCviaUSBandpowerup.
4) Startavrubd.AtOption-Systemtabselect LiteXModem”ascommunicationprotocol
andsetmaximunconnectcount to100(see Fig.10).
5) At Option-Comporttabselect thecomport numbercorrespondingtoyourscopeandset
parametersto9600baudrate,8databits,1stopbit, andnoparity(see Fig.11).
6) ClickontheOpenFileicontoloadthe newfirmwareyouhavedownloaded.
Clickonthedownloadicontostartdownloading(seeFig.12).Youshouldseeavrubdis
talkingtooscilloscope bysendingconnectionkeycontinuously.
intoavrubd
7) At DSO112AenterMenuandtouchthe button. Bootloaderwill be enteredand
answertoavrubd.Ifsuccessfulyoushouldseedownloadstartsandprogressesinavrubd.
Afterall datahavebeendownloadedthe scopere-startsandupgradingisdone.
Specifications
* Analogbandwidth:0 –2MHz
* Maxsamplingrate:2.5Msps
* Sensitivityrange:2mV/Div –20V/Div
* Sensitivityerror:<5%
* Maxinputvoltage:50Vpk
* Recordlength:512/1024points
* Inputimpedance:1M
*(.)Currentconsumption:~300mA@37V
Highlighted
cursor
Highlighted
cursor
ChargingLED
TheunitofTreadoutisthe sameasthecurrentunitoftimebase.Δ
Fig.6 Fig.7
Fig.8
Fig.9
Fig.10 Fig.11 Fig.12
LoadHEX
file
Download
Note:
TheunitofVreadoutisthesame asthecurrentunitofsensitivity.Δ
* Timebaserange:1s/Div –50s/Divμ* Dimension:80x70x18mm
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Presets
PresetSave/Loadstateisenteredbytouchingbuttonatthemenu.Toucha rowtoselect
(highlight)a location.Touchingbuttonwillsavecurrentparameterstotheselectedlocation
(existingdatawillbe over-written).Touchingwill replacecurrentparameterswiththatstored
inthe selectedlocation(ifnotempty). Touch Rename”attoptochange thetitleoftheselectedpreset.
ExternalTrigger
Externaltriggerinputsharesthesame connectorastest signaloutput(seeFig.1).Whentriggersource
issettoexternalthetestsignal willbedisabledandtriggerlevel willbedisplayedattop-right corner.
Whentriggersource isswitchedbacktointernalthe testsignal willresume.
Theallowedvoltage range forexternaltriggersignalis0-15V.
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