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6.4. Resistance measurements
WARNING! Attempting resistance or continuity measurements on live circuits can cause electric
shock, damage to the instrument and damage to the equipment under test.
Resistance measurements must be made on de-energized (DEAD) circuits only for maximum personal
safety. The electronic overload protection installed in this instrument will reduce the possibility of
damage to the instrument bus not necessarily avoid all damage or shock hazard.
1. Turn off any power to the resistor to be measured. Discharge capacitors. Any voltage present
during a resistance measurement will cause inaccurate readings and could damage the meter.
2. Insert the black test lead into the COM and the red test lead into the
terminals respectively.
3. Turn the Function selector switch to the position.
4. Connect the probe tips to the circuit or device under test, making sure it is de-energized first.
5. Read the resistance value in the LCD-display. Open circuits will be displayed as an overload OL
condition.
6. After completing measurement, disconnect the test leads.
Note:
Test lead resistance can interfere when measuring
low resistance readings and should be subtracted
from resistance measurements for accuracy. Select
lowest resistance range and make the test leads
short together.
The display value is the test lead resistance to be
subtracted.
-39-
- input
V//CAP/
/Hz
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