38073A-en-GB_v1.0 9/16
6
Resistance Measurements
WARNING: To avoid electric shock, disconnect power to the unit
under test and discharge all capacitors before taking resistance
measurements.
1.
Before testing resistance, test the condition of the battery:
a.
Set the function switch to ΩX1K or ΩX10 position.
b.
Short the test leads. The needle deflects to the right side.
c.
Keep the test leads shorted. Turn the 0 Ω adjustment
dial (6) until the needle reads zero Ω.
d.
If the needle will not zero, replace the battery.
2.
Set the function switch to the X1K or X10 range.
3.
Insert the black test lead into the COM input and the red
test lead into the VmAΩ input.
4.
Touch the test leads across the circuit. Disconnect one side
of the part under test so the rest of the circuit will not
interfere with the resistance reading.
5.
Read the measured resistance on the green Ω scale and
multiply the reading by 10 or 1000 (see step 2).
6.
When switching between functions, always zero the needle
again (step 1) to avoid inaccurate readings.
Battery (1.5V and 9V) Testing
1.
Set the function switch to the 1.5V or 9V position.
2.
Insert the black test lead into the COM input and the red
test lead into the VmAΩ input.
3.
Touch the black test lead to the negative side of the battery
and the red test lead to the positive side of the battery.
4.
Use the display scale labeled BAT to determine the quality
of the battery.
Green=Good
?=Replace Soon
Red=Replace Immediately
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