back to zero , enter into relative
measurement ,LCD display “
” symbol, press it again, out from
the relative value measurement
function .when at Hz range, can
switch to frequency or duty cycle
(0.1~99.9%) measurement mode.
2.RANGE key :selecting operation
mode of auto range or manual
range .the default mode of this
meter is auto range , LCD display“
” symbol, press this key will
change to manual range, press it
3
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