Preliminary Note - PeakTech 3320 Mode D'emploi

4. 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 push the power pushbutton to the OFF position when the
meter is not in use. This meter has Auto OFF that automatically
shuts the meter OFF if 15 minutes elapse between uses.
2. If "OL" appears in the display during a measurement, that value you
are measuring exceeds the range you have selected. Change to
higher range.

4.1. Preliminary Note

1. Check the 9 V battery by setting the ON/OFF switch to ON. If the
battery is weak, a "LO BAT" or "BAT" sign will appear on the left of
display. If this does not appear on the display proceed as below. See
"Maintenance" if the battery has to be replaced.
2. The warning sign next to the test leads jack is for warning, that the
input voltage or current should not exceed the indicated values. This
is to prevent damage to the internal circuitry.
3. The function switch should be set to the range, which you want to
test before operation.
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.
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