EX320-EU-ENG V5.1 6/09
5
Operating Instructions
WARNING: Risk of electrocution. High-voltage circuits, both AC and DC, are very
dangerous and should be measured with great care.
1. ALWAYS turn the function switch to the OFF position when the meter is not in use.
2. Press the HOLD button to freeze a displayed reading
NOTE: On some low AC and DC voltage ranges, with the test leads not connected to a
device, the display may show a random, changing reading. This is normal and is
caused by the high-input sensitivity. The reading will stabilize and give a proper
measurement when connected to a circuit.
NON-CONTACT AC VOLTAGE DETECTOR
The EX320 can detect the presence of AC voltage (from 100 to 600VAC) simply by being
held very near to a voltage source.
WARNING: Test the AC voltage detector on a known live circuit before each use.
WARNING: Before using the meter in the AC Voltage Detector mode, verify that the
battery is fresh by confirming characters appear on the LCD when the function dial is
turned to any position. Do not attempt to use the meter as an AC Voltage Detector if the
battery is weak or bad.
The NCV function works on any rotary switch position.
1. Test the detector on a known live circuit before use.
2. Press and hold the NCV button for the duration of the
test. The meter will beep once when the button is
pushed.
3. Hold the top of the meter very close to the voltage
source as shown.
4. If voltage is present, the rim of the LCD display will
flash a bright orange and an audible warning will
sound.
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