Amprobe 38XR-A User Manual page 17

Measuring Resistance
1. Set the Function Switch to Ω.
2. If � is displayed, press the yellow button to display Ω.
3. If RANGE is displayed, press the RANGE button to enable
autoranging.
4. Connect the Test Leads: Red to E, Black to COM
5. Turn off power to the circuit being measured. Never
measure resistance across a voltage source or on a
powered circuit.
6. Discharge any capacitors that may influence the reading.
7. Connect the Test Probes across the resistance.
8. Read the display. If 0o appears on the highest range, the
resistance is too large to be measured.
Testing for Continuity
1. Set the Function Switch to �.
2. If Ω is displayed, press the yellow button to display �.
3. Connect the Test Leads: Red to E, Black to COM
4. Turn off power to the circuit being measured.
5. Discharge any capacitors that may influence the reading.
6. Connect the Test Probes across the resistance.
7. Listen for the tone that indicates continuity (< 40 Ω).
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