Functional Description - Conrad VC-222 Bedienungsanleitung

the required measurement range on the unit and only then
switch on the voltage source.
After the measurement has been completed, switch off the vol-
tage source and remove the measuring leads from the connec-
tors to the voltage source
• Before any voltage measurement ensure that the measuring in-
strument is not set to the current measuring range
• Before every change in measuring range, the test probes must
be removed from the object being measured
• Before each measurement check your measuring instrument
and test leads for damage
• Only use the test leads which are supplied with the measuring
instrument for measurements. No others may be used
• To avoid electric shock, care should be taken that the test pro-
bes and the connections (measurement points) are not touched
during measurement, not even indirectly.
• The voltage between the V/Ohm socket of the measuring instru-
ment and ground may not exceed 300 V DC/V AC rms (CAT II =
Overvoltage Category 2)
• The measuring instrument should not be used in areas or under
adverse environmental conditions in which inflammable gas, fu-
mes or dust are present or can occur. For your own safety it is
essential to prevent the measuring instrument or its leads beco-
ming damp or wet. Avoid operation in the immediate vicinity of
- strong electromagnetic fields (loudspeakers or magnets)
- electromagnetic fields (transformers, motors, coils, relays,
contactors, electromagnets, etc.)
- electrostatic fields (charge/discharge)
- transmission aerials or HF generators
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• If it can be assumed that safe operation is no longer possible,
then the unit must be switched off and protected against unin-
tentional operation. It can be assumed that safe operation is no
longer possible if
- the instrument shows visible signs of damage
- the unit no longer functions and
- after prolonged storage under unfavourable conditions or
- after severe transportation stress
• Never switch the instrument on immediately after it has been
brought from a cold into a warm area. The resultant condensati-
on water could damage the instrument. Allow the instrument to
come to room temperature before switching it on.

Functional description

In addition to the usual measurement functions such as current,
voltage and resistance measurement, with this multimeter you can
test transistors and carry out diode tests. With this multimeter con-
tinuity tests with acoustic indication are also possible. The indica-
ted data can be 'frozen' by means of a button (HOLD) to be found
within the rotary switch.
Furthermore, the VC-222 has a so-called AUTO POWER OFF func-
tion, through which after approx. 15 minutes the unit switches itself
off automatically, to conserve energy. It can be switched on again
by means of the button in the centre of the rotary switch. In the DC,
AC and resistance measurement functions, switching of the indivi-
dual measurement ranges occurs automatically ("auto ranging").
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