Operating Instructions - PeakTech 3445 Operation Manual

3. Operating instructions

Warning!
Risk of electrocution! High-voltage circuits, both AC and DC are very
dangerous and should be measured with great care.
Always push the power switch to the OFF position when the meter is
not in use. This meter has Auto OFF that automatically shuts the
meter OFF if max. 15 minutes elapse between uses.
If "OL" appears in the display during a measurement, that value you
are measuring exceeds the range you have selected. Change to
higher range.
3.1. Preliminary Note
1. Check the supply voltage by setting the DMM switch to ON. If
the voltage is weak, a "BAT" sign will appear on the right of
display and you have to charge the battery.
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:
In the lower AC / DC measuring ranges maybe an arbitrarily
changing phantom value will appear in the LCD display. This is
normal for devices with high sensitivity and high input impedance
and meaningless for measurement accuracy. These jumping
measured values disappear in the event of a short circuit in the test
leads or connection of the test object.
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