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Elma BM 251-252-255-257
side 25
DCV, ACV & linjefrekvensfunktioner
Tryck på Hz-knappen i minst en sekund för att aktivera eller gå ut ur Hz-funktionen.
Notera!* Känsligheten varierar automatiskt med det valda funktionsområdet, innan Hz-
funktionen aktiveras. 6V funktionsområdet har den högsta känsligheten och 1000V
området har den lägsta. Det rekommenderas att först mäta signalspännings (eller ström)
nivån, därefter aktivera Hz-funktionen i de spännings (eller ström) området för att
automatisk ställa in passande startnivån. Man kan också trycka RANGE-knappen
kortvarigt för att manuellt välja en annan startnivå. Om Hz avläsningen blir instabil, välj då
en lägre känslighet för undvika elektriska störningar. Om avläsningen blir noll, välj då en
högre känslighet.
* Antalet markörvisningar används för den valda ingångens känslighet. 1/2/3/4 punkter
indikerar 6/60/600/1000V, 6/10/-/-A, 60/600/-/-mA eller 600/6000/-/-µA, som väljs i
tillhörande V, A, mA eller µA funktioner. (”-” med detta menas, att området inte är
tillgänligt).
* Hz för mV-funktionen är en speciellt designad logisk nivå för frekvensmätningar (3V eller
5V).
!
DCV
JACK
JACK
ACV
!
JACK
JACK
!
JACK
JACK
Hz
25


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