Amprobe AM-250 Digital-Multimeter - Manual (Page 10)

4
Diode test,Capacitance functions
Defaults at e. Press SELECT button momentarily 2 times to select Diode
test function. 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).
An 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).
Defaults at e. Press SELECT button momentarily 3 times to select
Capacitance function. Relative zero
mode can be used to zero out the
parasitic capacitance of the leads and the internal protection circuitry of the
meter when measuring low capacitance in the order of Pico Farad (pF).
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Caution
Using Resistance, Continuity, Diode or Capacitance function in 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 measurement reading.