Amprobe AM91RS Digital-Multimeter User Manual

Page 12

Capacitance, Diode test function

Default at

. Press SELECT button momentarily to select Diode test function.

CAUTION

Discharge capacitors before making any measurement. Large value capacitors should be

discharged through an appropriate resistance load

Note:

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).