Elma BM 251s-257s
side 38
50 and 60Hz in DCV function. If neither NMRR nor CMRR specification is specified, a
DMM's performance will be uncertain.
Operation
CAUTION
Before and after hazardous voltage measurements, test the voltage function on a known
source such as line voltage to determine proper meter functioning.
AutoCheckTM mode
This innovative AutoCheck
TM
feature automatically selects measurement function of DCV,
ACV or Resistance (
) based on the input via the test leads.
●With no input, the meter displays “Auto” when it is ready.
●With no voltage signal but a resistance below 10M
(nominal) is present, the meter
displays the resistance value. When the resistance is
below “Audible Threshold”, the meter
further gives a continuity beep tone.
●When a signal above the voltage threshold of 1V DC or AC up to the rated 1000V is
present, the meter displays the voltage value in appropriate DC or AC, whichever larger in
peak magnitude.
