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10.3 Resistance measurement
WARNING: Never test on a live circuit. Remove all power from the cir-
cuit and discharge all capacitors before testing.
1. Set the rotary switch to: Ω.
The display will show "k" or "M" + Ω".
à
2. Connect the test leads to the input terminals:
- Black test lead to the negative input terminal: COM
- Red test lead to the positive input terminal: Ω.
3. Touch the test probe tips across the circuit or component under test. It may
take a few moments for the reading to stabilize.
The measurement will show on the display.
à
4. Disconnect the test leads and switch the power OFF after use.
Tips:
– Check the test leads for continuity by touching them together. The resistance
value should be approx. 0.5 Ω (inherent resistance of the test leads).
– For low resistance measurements (<400 ohms), you can deduct the inherent
resistance of the test leads from the measurements. See section:
mode
[} 49].
Relative
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