5
Resistance,
Continuity &
Diode test functions
Press the
SELECT
button momentarily to select the subject functions in sequence. Last selection
will be saved as power up default for repeat measurement convenience.
CAUTION
Using resistance or continuity functions on a live circuit will produce false results
and may damage the instrument. In many cases the suspected component
must be disconnected from the circuit to obtain an accurate reading.
Continuity function is convenient for checking wiring connections and
operation of switches. A continuous beep tone indicates a complete circuit.
Normal forward voltage drop (forward biased) for a good silicon diode is
between 0.400V to 0.900V. A reading higher than that indicates a leaky diode
(defective). A zero reading indicates a shorted diode (defective). "OL" indicates
an open diode (defective). Reverse the test leads connections (reverse biased)
across the diode. The digital display shows "OL" if the diode is good. Any other
readings indicate the diode is resistive or shorted (defective).
