GW Instek GCM-303 - Manual (Page 2)

Please read this instruction manual before using the
meter and keep it properly for contingent use.
To avoid danger and damage happened during operation,
the following symbols are used as points for attention.
Improper use of the meter may bring
hurt or even death to body. Please
read the operation carefully.
Improper use of the meter may bring
hurt or even death to body. Please
read the operation carefully.
:Warning:
:Caution:
:Dual insulation
:Grounding - Earth Terminal
:AC - (Alternating Current) voltage / current
:DC - (Direct Current) voltage
PRECAUTION:
Warning
To prevent electrical shock or fire!
Before measurement, make sure that the test leads
and function switch has been set properly.
Before switching among functions, remove the test
leads off the measured object.
Before measurement, make sure the circuit current
of object won't exceed the maximum measurement
range.
Do not use this meter if any crack or damage
occurred in the case or test leads.
Do not open the case of meter or the battery lib
during measurement.
Please keep your hands behind the guard ring of
test leads while measuring with test leads.
Please keep your hands below the guard ring of the
meter while measuring with sensoring jaw.
Before proceeding resistance measurement, turn
off the power to the circuit under test first.
Never use the meter in rainy or humid environment
or with wet hands.
Before proceeding current
measurement, make
sure to remove the test leads from the input
terminals.
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