XITRON XT2640 - An Oscilloscope - the SCOPE VIEW Screen

XT2640OperatingManual 13July2016 Page63of187
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2. Displaythescreentoberecorded.
3. PresstheDRIVEINFOareaofthescreen,thescreenshowsthefileexport/importscreen.
4. PresstheSCREENIMAGEbutton.Thescreenchangestoallowingyoutoenterafilename.
5. Enterthedesiredfilename(theextensionisautomaticallyprovided).
6. Ifthefilealreadyexiststhenyouarepromptedtorespondifyouwishtooverwriteitornot.
7. Thefileisthenwritten.
12.10.2 ANOSCILLOSCOPE–THESCOPEVIEWSCREEN
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Theaboveexampleshowsthevoltage(inblue)andcurrent(inred)waveformsofaninrushcurrentwiththecursorpositionedatthe
maximalcurrent.
12.10 .2.1 CONFIGURINGTHETRIG GERAN DTIME BASE
TheCONFIGbuttonallowsyoutoconfigurethetriggerandtimebase.Whileinremoteyoucanonlyviewthetriggerandtimebase
settingsbutcannotchangethem.Whenchangesaremadeanypreviouslycapturedtracesarecleared.
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PressingtheSOURCEbuttonallowsyoutoselectthetriggersourcefromtheavailablesignals.
NotethatthescopealwayscapturesallsignalsinthechannelswhichareconfiguredinthesameVPAasthatofthetriggersource.If
aVPAisconfiguredwithitsLF/PERIODsettingselectingasanotherVPAandthetriggersourcechannelisineitheroftheseVPAs,
thenchannelsmaybeineitherofthesetwoVPAs.
PressingtheTYPEbuttonallowsyoutoselectthetriggerdetectiontype.
IfyouselectDC(risingedge)thescopeistriggeredwhentheselectedsignalchangesfrombelowthetriggerleveltoabove
thetriggerlevel.HFfilteringisprovidedtoreducethepossibilityofsmallglitchescausingatrigger.
IfyouselectDC(fallingedge)thescopeistriggeredwhentheselectedsignalchangesfromabovethetriggerleveltobelow
thetriggerlevel.HFfilteringisprovidedtoreducethepossibilityofsmallglitchescausingatrigger.
IfyouselectABS(DC)thescopeistriggeredwhentheselectedsignalisabovethetriggerlevelorbelowthenegativeofthe
triggerlevel.Thissettingisparticularlyusefulwhentriggeringoninrushcurrentsorvoltagetransientsbecauseyoudonot
knowwhichpolaritythetransientwillbe.HFfilteringisprovidedtoreducethepossibilityofsmallglitchescausinga
trigger.Notethatsettingthistriggertypeandatriggerlevelofzero(orclosetozero)willcausethescopecaptureto
alwaystriggerasthesignalisalwayseitheraboveorbelowzero.
IfyouselectHFthescopeistriggeredwhentheresultofHPfilteringtheselectedsignalisabovethetriggerlevelorbelow
thenegativeofthetriggerlevel.Thissettingisusefulwhenitisrequiredtotriggeronfastglitches.TheHPfilteremployed
correspondstoatimeofnominally10%ofthetimebasesetting.Notethatsettingthistriggertypeandatriggerlevelof
zero(orclosetozero)willcausethescopecapturetoalwaystriggerasthesignalalwayshasgreaterthanzeroHFcontent.