Operation; Preparation And Safety Measures - Unitest CHB 3 Bedienungsanleitung

5.0 Operation

5.1 Preparation and safety measures

Fitting the battery
Before using the instrument, the battery must be fitted. This
is carried out as follows:
Separate the instrument from any circuit, and remove
the test leads.
Open the housing by removing the screw on the rear
face.
Fit a new battery (type 9 V IEC LR6), taking care that
the polarity is correct. Make sure that no wires are
trapped between the 2 halves of the housing, and
close it again.
The instrument is now ready for use.
The selector switch must be turned to the desired type
of measurement before the probes are connected to
the unit under test (UUT).
Before switching to a new function, the probes must
always be removed from the UUT.
Use the instrument only in clean and dry surround-
ings. Dirt and moisture reduce the effectiveness of the
insulation, with consequent danger of electric shock,
especially when dealing with high voltages.
Use the instrument only in the specified ranges. Be-
fore making measurements, verify that the instrument
is functioning properly, for example by testing on a
known voltage or current. Make sure that the test leads
are undamaged.
Operation
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