Extech Instruments 470 - Manual (Page 12)

V5.0 5/04 12
RESISTANCE MEASUREMENTS
WARNING: To avoid electric shock, disconnect power to the
unit under test and discharge all capacitors before taking any
resistance measurements. Remove the batteries and unplug
the line cords.
1. Set the function switch to the green Ω position.
2. Insert the black test lead banana
plug into the negative COM jack.
Insert the red test lead banana
plug into the positive
Ω jack.
3. Press the SELECT button to
indicate “ Ω" on the display.
4. Touch the test probe tips across
the circuit or part under test. It is
best to disconnect one side of the
part under test so the rest of the
circuit will not interfere with the
resistance reading.
5. Read the resistance in the display.