Brymen BM857 User Manual page 12

11
Capacitance, Diode test function
Press SELECT button momentarily to toggle between Capacitance and
Diode test functions. The new setting will be saved automatically to the non-volatile
memory as power up default.
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).