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d) Resistance measurement
Make sure that all the circuit parts, circuits and components to be measured
as well as other objects of measurement are disconnected from the voltage.
Proceed as follows to measure the resistance:
- Turn the DMM on at the rotaryswitch (1) and
select the measuring range „Ω“ .
- Check the measuring leads for continuity by
connecting both test prods to one another. After
that the resistance value must be approx. 0.5
Ohm.
- Now connect the measuring prods to the object
to be measured. As long as the object to be
measured is not high-resistive or interrupted, the
measured value will be indicated on the display
(4).
- As soon as „O.L“ (overow) appears on the display, you have exceeded the measuring
range or the measuring circuit has been interrupted.
If you carry out a resistance measurement, make sure that the measuring points which
you contact with the test prods are free from dirt, oil, solderable lacquer or the like. Such
circumstances may falsify the measured result.
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