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zero reading indicates a shorted dio de (defective). An over range display indicates an
open diode (defective). Reverse the test leads connections (reverse biased) across the
diode. The digital display shows over range if the diode is good. Any other readings
indicate the diode is resistive or shorted (defective).
When the display reading drops across 0.850V,
the meter alerts a short beep to signal a reasonable forward voltage drop of common
diodes. However, if the reading further drops below 0.100V, the meter gives a
continuous beep tone together with flashing display backlight to indicate a shorted
diode or a complete wire. It is similar to that of
function but
, instead, is based on voltage threshold to indicate a complete wire.
Using
,
or
function in a live circuit
will produce false results and may damage the meter. In many cases , the suspected
component(s) must be disconnected from the circuit to obtain an accurate
measurement reading.
