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Elma 6400
9
• Seriel/Parallel måling
Instrumentet giver mulighed for at vælge mellem parallel eller seriel måling.
Afhængig af valgt metode, vil tilkoblingen til testkredsen være forskellige.
Derudover er det værd at bemærke, at én metode kan byde på fordele i præcision
fremfor den anden metode, alt efter hvilken type af komponent som der måles på.
For yderligere detaljer, se kapitlet ”Supplerende information”.
Når enhver L/C/R funktion vælges, vælges standardværdien for serie eller parallel
automatisk og ”AUTO” lyser op i display. Standardværdien er afhængig af den
ækvivalente impedans som måles. Er impedansen større end 10k, vælges
parallel funktion og Lp/Cp/Rp vises i displayet. Hvis impedansen er mindre end
10k vælges seriel funktion og Ls/Cs/Rs vises i displayet.
For at skifte mellem seriel og parallel måling trykkes på knappen .
• Hold funtion
Datahold gør det muligt at fastfryse en værdi i displayet.
Tænd Data Hold
Tryk på knappen en gang. "HOLD" lyser op i displayet når hold funktionen er
aktiv.
Sluk Data Hold
Tryk igen på knappen. "HOLD" vises ikke længere i displayet, og displayet
frigøres.
• Relative måling
Tryk på knappen for at anvende den aktuelt viste værdi som reference værdi
(nul værdi). I displayet indikeres relativ måling med "". Den sekundære
parameter i displayet vil vise den procentiske værdi af den aktuelle måling i forhold
til den fastholdte relative værdi benævnt REL%. % =




∙%
. Tryk på
knappen igen for at vise DREF værdien som primær værdi. I denne funktion
blinger "" i displayet. Den procentiske skala går fra -99.9% til 99.9%. Hvis den
relative værdi er dobbelt så stor som reference værdien (DREF) vises OL% i
9


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