Sonel CMM-60, User Manual

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CMM-60
– USER MANUAL
44
3 Preparing the meter for operation
After purchasing the meter, check whether the content of the package is complete.
Before performing the measurement:

make sure that the battery level is sufficient for measurements,

make sure that the device has fuse installed and efficient,

check whether the meter casing and insulation of the test leads are not damaged,

to ensure consistent measurement results it is recommended to connect black lead to COM terminal
and red lead to other terminals,
WARNING:
Connecting wrong or damaged leads may cause electric shock.
WARNING:
Do not perform the measurements if the potential of the COM terminal to earth exceeds 1000 V.
WARNING:
The meter must not be connected to the voltage source when it is set to current or resistance
measurement or to diode test. Failure to observe this precaution may damage the meter!
When using the meter, be sure to:

discharge capacitors in the tested power sources,

disconnect the power supply from the tested object when measuring the resistance and diode tests,

turn off the meter and disconnect test leads before removing the back cover to replace the battery or
fuses.
WARNING:
Do not use the meter if the cover of battery and fuse compartment is removed.
Note:
It is possible that in certain low ranges of AC or DC voltage, when the meter is not connected
to the leads, the screen will show random and variable readings. This is a normal phenomenon,
which results from the input sensitivity with high input resistance. When connected to a circuit,
the read-out will stabilize and the meter will provide the correct value.