Ac Voltage Measurements - Extech Instruments MG320-NIST User Manual

some 240V ou lets for appliances because the contacts are recessed deep in the outlets. As a result, the reading
Do not measure AC voltages if a motor on the circuit is being switched ON or OFF. Large voltage surges may
Do not measure AC voltages if a motor on the circuit is being switched ON or OFF. Large voltage surges may

6.5 AC VOLTAGE MEASUREMENTS

A
Risk of Electrocution. The probe tips may not be long enough to contact the live parts inside
WARNING:
may show O volts When the outlet actually has voltage on it. Make sure the probe tips are touching the metal
contacts inside he outlet before assuming that no vo l tage is present.
A
CAUTION
occur that can damage the meter.
Do not measure voltages higher than 600V
When the measured voltage is > 60VDC or 600VAC the meter flashes the warning icon on the upper left.
occur that can damage the meter.
Set the function switch to the
1 .
2. Insert the black test lead banana plug into the negative
(6)
Insert red test lead banana plug into the positive V jack (7).
3. Touch the black test probe tip to the neutral side of the circuit.
Touch the red test probe tip to the "hot'' side of the circuit.
4. Read the voltage in the main display and in the lower bargraph.
5. Short press the
unfreeze (no H icon displayed) the displayed reading
lf;IGtl)
Press
6.
7. Note that the Auto Power OFF function activates after 3 minutes
of inactivity. The meter will aud bly beep just prior to shutting off.
Note that the Auto Power OFF function activates after 3 minutes
8.
of inactivity. The meter will audibly beep just prior to shutting off.
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176
V
position.
H
(Hold) button to freeze
to store the reading
TestEquipmentDepot.com
COM jack
(H
icon displayed) or
8
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MG320-en-GB _ v1 .1 1 /17