FLIR DM93, User Manual

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5 Operation
5. If the resistance is 25 ± 5
Ω
(nominal) or less, the meter beeps.
5.7 Diode test
WARNING
Do not do diode, resistance or continuity tests before you have removed the
power from the capacitors and from a device during a test. Injury to persons
can occur.
1. Set the function switch to the position.
2. Use the button to select the diode test function. The indicator will
be displayed.
3. Insert the black probe lead into the negative 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. Make a note of the value on the display.
5. Reverse the polarity of the probes, by interchanging the probe test locations.
6. Touch the tips of the probe across the diode or semiconductor junction under
test. Make a note of the new value on the display.
7. The diode or semiconductor junction can be evaluated as follows:
• If one of the readings displays a value (typically 0.400 V or 0.900 V) and
the other reading displays
OL , the component is good.
• If both readings display OL , the component is open.
• If both readings are very small or 0, the component is shorted.
5.8 Capacitance measurements
WARNING
Do not do diode, resistance or continuity tests before you have removed the
power from the capacitors and from a device during a test. Injury to persons
can occur.
1. Set the function switch to the position.
2. Use the button to select capacitance measurement. The F unit will be
displayed.
#T559824; r.8007/8011; en-US 16
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before
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