Capacitance (Models 235 & 233 only); Diode
Press the SELECT button momentarily to toggle the functions.
Last selection will be saved as power up default for repeat measurement convenience.
In Diode function, the 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).
CAUTION
Discharge capacitors before making any measurement. Large value capacitors should
be discharged through an appropriate resistance load.
Dave's Note: You can use the AutoV LowZ mode to discharge capacitors! (Can
be slow on big caps) You'll even get a handy voltage reading to know when it's
safely discharged.
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