5
Operation
5.12
Diode test
WARNING
Do not do diode, resistance, or continuity tests before you remove the power
from the capacitors and the other devices (when you do a test during a meas-
urement). Injury to persons can occur.
The meter checks diodes using an alternating test signal sent through the diode
in both directions. This allows the user to check the diode without having to re-
verse the polarity manually. The meter display will show
±0.4–0.8V
for a good di-
ode,
bAd
for a shorted diode, and
O.L
for an opened diode. See Figure 5.7.
- 0.4V
O.
L
bAd
+ 0.4V
Figure 5.7
Diode testing
1.
Set the function switch to the
position.
2.
Insert the black probe lead into the negative COM terminal and the red probe
lead into the positive
Ω
terminal.
3.
Use the
button to select the diode test function. The
indicator will
be displayed.
4.
Touch the tips of the probe across the diode or semiconductor junction under
test.
5.
If the reading is between ±0.40 and +0.80 V, the component is good; an
bAd
or
O.L
display indicates a defective component.
#T559825; r. AI/33557/33557; en-US
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