Resistance Measurements - Extech Instruments 470 User Manual

True rms multimeter plus ir thermometer

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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

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.

position.

V5.2

3/07

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