3. Remove power from the circuit under test and then break
thecircuit at the appropriate point.
4. Connect the test leads in series with the circuit.
5. Apply power and read the current. Your meter displays the
current value.
Note:
If you see the meter for DC curr
ent, “-” appears or disappears.
This indicates the polarity of the measured current.
6.3. Measuring Resistance
WARNING!
*
Never connect the test leads to a source of voltage when
you have the selected the OHMS function and plugged the
test leads into the V/
/Hz-terminal.
*
Be sure that the circuit under test has all power removed
and that any associated capacitors are fully discharged
before you make a resistance measurement.
The resistance measuring circuit compares the voltage gained
through a known resistance (internal) with the voltage developed
across the unknown resistance. So, when you check in-circuit
resistance, be sure the circuit under test has all power removed
(all capacitors are fully discharged).
1. Set the rotary selector to the desired OHM range.
2. Plug the black test lead
into your meter’s COM terminal and
the
red test lead into your meter’s V/
/Hz-terminal.
3. Connect the test leads to the device you want to measure.
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