Amprobe AM-100 User Manual page 7

6
Diode test, Capacitance functions
Defaults at Ω. 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 Ω. 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).
CAUTION
Discharge capacitors before making any measurement. Large value capacitors should
be discharged through an appropriate resistance load