Resistance Measurements; Continuity Check; Diode Test - Extech Instruments EX210T User Manual

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. Rotate the function switch to the 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  jack.
3. Touch the test probe tips across the device under test.
4. Read the resistance in the display.

CONTINUITY CHECK

WARNING: To avoid electric shock, never measure continuity on circuits or wires that have a
voltage potential.
1. Rotate the function switch to the
2. Insert the black lead banana plug into the negative COM jack.
Insert the red test lead banana plug into the positive
3. Press the MODE button to indicate"
4. Touch the test probe tips to the circuit or wire you wish to check.
5. If the resistance is less than the continuity threshold, the audible signal will sound.

DIODE TEST

1. Rotate the function switch to the green
2. Insert the black test lead banana plug into the negative COM jack and the red test
lead banana plug into the positive
3. Press the MODE button to indicate "
4. Touch the test probes to the diode under test. Forward voltage will typically indicate
0.400 to 0.700V. Reverse voltage will indicate "OL". Shorted devices will indicate
near 0V and an open device will indicate "OL" in both polarities.
position.
jack.
"on the display
position.
jack.
"and "V" on the display.
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