Varian Cary 5000 User Manual - page 14
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Withthisoption,theCarywillpromptyoutoperforma100%TBaselinefirst,followed
bya0%TBaselinewhenyouperformabaselinecollection.
Note
IfyouselectthisoptiontheBaselinebuttoninthemainwindowwillnotbeenabled
untilyouhaveretrievedaStdReffile.Clickthisbuttontobrowseforandselecta
StdReffile.ThisfilemustbeintheError!Hyperlinkreferencenotvalid.format.
KnownMirror
SelectthisoptionwhenyouareusingaVWSpecularReflectanceAccessory(SRA)with
asmallsampleorasampleoflowreflectance.RefertoyourSRAmanualformore
information.
KnownMirrorCorrection
Thecorrectionequationisasfollows:
S − 0%TBaseline
100%TBaseline − 0%TBaseline
Known mirror corrected
where
Known mirror corrected =
known mirror − 0%TBaseline
100%TBaseline − 0%TBaseline
Tip
Ifbaselinecorrectionisactivated,thetypeofcorrectionthattheCarywill
applywillappearintheinred.
However,sometimesyoumaynoticethatthetexthasturnedtograyandisin
italics.ThisindicatesthattheCaryiscurrentlyidlingoutsidetheabscissa
rangeofthebaselinefile,butthatthecurrentmethodStart/Stopparameters
donotexceedtheabscissarangeofthebaseline.
RetrieveBaselineFile
ThisbuttondisplaystheWindowsOpendialogboxwhereyoucanselectastored
baselinefile.Thetrace(s)inthisfilewillbeusedfortheselectedbaselinecorrection.
ThenameoftheselectedfileappearsnexttotheBaselinebutton.
Tip
Ifyouwanttousethebaselineagainwithothersamples,savethemethodusing
File|SaveMethodAs.Then,whenyoure-openthemethod,thebaselinewillalso
openandbereadytouse.Itispreferabletosavethebaselinewiththemethod,
ratherthanabaselinefile,asthatwayyoucanbesurethatallyourcollection
parametersareexactlythesameforthenewScanruns.However,GoodLaboratory
Practicerecommendsthatyoucollectanewbaselineforeachlaboratorysession.
ViewBaselineFile
ThisdisplaysthetracesintheselectedbaselinefileintheGraphicsarea.