c) Resistance measurement (Ω)
Make sure all circuit parts, circuits, components, and other objects of measurement
are disconnected from the voltage supply and fully discharged..
1. Set the function dial to
.
2. “Ω” will show on the display.
3. Connect the test leads to the terminals:
- Red test lead to the
terminal.
- Black test lead to the COM terminal.
4. Connect the test lead probes to the correct test
points in the circuit:
- Red: Positive polarity “+”.
- Black: Negative polarity “-”.
Check the lines for continuity by connecting
the two test leads. The impedance value
should be ≤ 0.5 Ω (inherent impedance of
the measuring lines). If the value is ≥ 0.5 Ω,
check the terminal connections or if there is
any damage.
5. Read the resistance values on the display.
- “OL” will appear on the display if the maximum range is exceeded or if the circuit is open.
- When measuring high resistance, it is normal to take a few seconds for readings to
stabilize.
6. When finished measuring, disconnect the test leads and switch the power OFF
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