XITRON XT2640 - Using the Other Results Screens; Using the HARMONICS Screen; Performing an Assessment of Aeut; Selecting the Channel to View Results

XT2640OperatingManual 13July2016 Page94of187
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18.3 USINGTHEOTHERRESULTSSCREENS
MostoftheotherresultsscreensavailableintheXT2640arealsoavailable,andareunchanged,whenconfiguredforEN61000‐3‐2or
‐12measurements,whetheractuallyperforminganassessmentornot,theyhavenoeffectontheassessmentbeingperformed.See
section12forfulldetailsregardingthesescreens.TheHARMONICSscreenhassomechangeshowever,asdetailedbelow.
Note:
Holdingmeasurementswhileperforminganassessmentalsoholdsthatassessment,continuingitoncereleased.
18.3.1 USINGTHEHARMONICSSCREEN
TheHARMONICSscreenmaybeusedinthenormalfashionwhileconfiguredforEN61000‐3‐2or‐12measurements,butyoucan
additionallyselecttocheckharmonicsagainstthelimitsrequirementsofEN61000‐3‐2or‐12(asconfigured).Seesection12.7for
fulldetailsregardingusingthisscreen.
Note:
AcomparisonagainstlimitsperformedinthismannerisnotsufficientforEN61000‐3‐2or‐12complianceassessment,but
itmaybeusedasacheckthattheinstantaneousharmonicsmeetthebasicrequirementsofthosestandards.
Anyreferencelevelsrequiredtobeusedwiththeselectedlimitsarethosemeasuredatthatinstant,andRsce(for
EN61000‐3‐12)isassumedtobe33.
Thisscreencanbeusedtochecktheharmoniccontentofthesupplysourcewhenunloaded,asrequiredbyEN61000‐3‐12.
ItcanalsobeusedtocheckthesupplysourcepriortoEN61000‐3‐2assessmentifdesired.
ThisscreencanbeusedpriortoEN61000‐3‐2or‐12assessmentstoadjustthesettingsontheEUTtodeterminethe
settingswhichresultinthehighestTHCasrecommendedbythestandard.
18.4 PERFORMINGANASSESSMENTOFAEUT
ThisisperformedbypressingtheASSESSEUTbuttonwhichisonlyavailablewhentheXT2640isconfiguredforEN61000‐3‐2or‐12
measurements.
ThescreenshownbelowshowswhatwillbeseeniftheASSESSEUTbuttonispressedwhennopriorassessmenthasbeen
performed.
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18.4.1 SELECTINGTHECHANNEL TOVIEWRESULTS
TheCHn(ncanbe1,2,3or4)buttonallowsyoutoselectforwhichchannelyouareviewingtheresultsofthelastperformed,or
ongoing,assessment.Notethatallchannelsareactuallyassessedatthesametime;thisselectiononlychangesthechannelforwhich
thescreenshowstheresults.