FLIR DM91 USER MANUAL Document Identifier: DM91-en-US_AB
19
5.7 Smart Diode Test
Warning
: Do not perform diode tests before removing the power from capacitors and
other devices under test during a measurement. Injury to persons can occur.
1.
If not already selected, choose SMART Diode test mode in the Settings menu
(see
2.
Set the function switch to the diode
position. Use the
button to
select the diode test function. The diode indicator
appears.
3.
Insert the black probe lead into the negative COM terminal and the red probe
lead into the positive terminal.
4.
Touch the tips of the probe across the diode or semiconductor junction under
test.
5.
If the reading is between ± 0.400 ~ 0.800V, the component is good; BAD or O.L
displays indicate a defective component.
NOTES:
In SMART Diode mode 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 reverse polarity manually. The meter display will show ±
0.400 ~ 0.800V for a good diode,
‘bAd’
for a shorted diode, and
‘
O.L
’
for an opened
diode. See Fig. 5.4 below:
Fig. 5-4
SMART Diode Test
