Special Safety Instructions; Measuring Dc Voltage - Probuilder 89177 Gebrauchsanweisung

Special safety instructions

This multimeter is designed according to the
applicable rules of EN-61010-1, relating to
electronic measurement instruments with
high-voltage capability, category II.
Only use the accompanying test cables
together with the multimeter.
Never exceed the values speci� ed on the
front of the multimeter.
Once the multimeter is connected to a
circuit, you must not touch the terminals that
are not in use under any circumstances.
Never use the multimeter to test voltages
that may exceed 600 V in category II
installations.
Set the function selector to the maximum
range if you do not know in advance what
the range will be.
Before turning the function selector, you
should disconnect the test cables from the
object being measured.
If you perform measurements on televisions,
etc. you must remember that they are
constructed in such a way that there may be
huge voltage � uctuations that can damage
the multimeter.
Always be careful when working with
voltages over 60 V DC or 30 V AC. Keep your
� ngers behind the two small ridges on the
test cables.
Never take resistance measurements of live
circuits.
Before the multimeter is opened, all the test
cables should be removed from the objects
being measured.
Never use the multimeter if the rear panel is
not correctly attached.
For indoor use only.
32

Measuring DC Voltage

1) The LCD displays "AUTO AC" or " AUTO
DC".
2) Connect the test leads across the source
or load to be measured.
3) Read the LCD display. The polarity of the
RED lead connection will be indicated
when making a DC measurement.
4) If the AC voltage is tested, the LCD shows
the value of the AC voltage.
5) Press the "Hz%"key to select measuring
the frequency or measuring the duty
ratio(%), below is the "Hz%"key.
Note:
1. Be careful to avoid electric shocks
when measuring high voltages.
After completing the measurement,
disconnect the meter lead from the
circuit being tested.
2. Pure DC voltage does not have a
frequency or duty cycle, so the operation
is invalid for DC voltage tests.
Measurement ranges:
Range Resolution
400 mV 100 µV
4 V 1 mV
40 V 10 mV
400 V 100 mV
600 V 1 V
Overload protection: 600V DC or 600AC rms
for the 200 mV range and 250 V DC or AC
(rms) for other ranges.
Precision:
±0.8% + 5 D
±0.8% + 3 D
±0.8% + 3 D
±0.8% + 3 D
±1.0% + 5 D