Operation; Function - Brymen BM157 User Manual

4

4) 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.
AutoVA

function

TM
Set the slide-switch function-selector to the position.
●With no input, the meter displays " " when it is ready.
●With no ACA current input via the jaws but a voltage signal above the nominal
threshold of DC 2.4V or AC 30V (40Hz ~ 500Hz) up to the rated 600V is present on
V-COM terminals, the meter displays the voltage value in appropriate DC or AC,
whichever larger in peak magnitude. Annunciators "Auto" "dc" and "Auto" " " turn on
respectively.
●On the contrary, with no voltage signal present on V-COM terminals but a ACA
current signal above the nominal threshold of AC 1A (40Hz ~ 500Hz) up to the rated
1000A is input via the jaws, the meter displays the ACA current value. Annunciators
" " and "Auto" turn on accordingly.
●The Auto-VA feature stays at the auto-selected function as long as its signal remains
above the specified threshold. Press SELECT button momentarily to manually select
and lock (annunciator "Auto" turns off) thru the functions ACA, ACV, DCV and then goes
back to Auto-VA.