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Elma 22 - 25 - 27 Side 4
AutoCheck
TM
nominel input impedans er mindre end på et almindeligt multimeter. ”LoZ”
vises på displayet for at minde brugeren om sådanne tilfælde. Hvis en sådan impedans
evt. ville kunne beskadige dine kredsløb, hvilket dog ikke er sandsynligt, bør du benytte
almindelig impedans (Hi-Z) spændingsfunktionen (gælder kun for BM27 og BM22), når
du foretager spændingsmålinger på dem.
Gennemgangstest, Med lyd og symbol i Displayet (Kun BM27 & BM25)
Fra AutoCheck
TM
funktionen, tryk på SELECT en gang for at vælge gennemgang. I
displayet vises nu symbolet for ”åben kreds” ” ”. En konstant tone samtidigt med at
symbolet ”
”indikerer at kredsen er sluttet.
Elektrisk Felt EF-Detektion (Kun BM27 & BM25)
Fra AutoCheck
TM
funktionen, tryk på SELECT to gange for at vælge EF-Detektion. I
displayet vises ”EF”. Signalets styrke indikeres med bargraf segmenter i displayet, samtidigt
er der varierende tone der også indikerer styrken.
Berøringsfri EF-Detektion: En antenne vises i displayet, nu kan du måle uden
på en ledning om der er spænding på eller ej.
Kontakt EF-Detektion: For mere præcis indikation af spændingsførende ledere
kan du bruge den røde prøvepind (+).
V & Ω i AutoCheck
TM
– Manuelt valg (Kun BM27 & BM25)
Fra AutoCheck
TM
funktionen, tryk på SELECT tre gange for at vælge ACV, 4 gange for
DCV og 5 gange for modstand (Ω).
Frekvens & Kapacitet (Kun BM27 & BM25)
Fra AutoCheck
TM
funktionen ”Auto”, tryk på SELECT seks gange for at vælge
frekvens (Hz), 7 gange for kapacitet (F) og 8 gange for at retunere til AutoCheck
TM
.
Bemærk:
I modsætning til Linjeniveau Hz-frekvensfunktionen (kun BM27), som anført ovenfor, bliver
denne (almindelige) Hz-frekvensfunktion kun brugt ved den højeste indgangsfølsomhed,
primært til måling af små elektroniske signaler på under 20 VAC rms.
5


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