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Fluke 123/124
Users Manual
4
Safely Using the Test Tool
Attention
Carefully read the following safety
information before using the test tool.
Safety Precautions
Specific warning and caution statements, where they
apply, will be found throughout the manual.
A Caution identifies conditions and actions that may
damage the test tool.
A Warning identifies conditions and actions that pose
hazard(s) to the user.
Symbols used on the test tool and in this manual are
explained in the next table.
Warning
To avoid electrical shock, use only Fluke
power supply, Model PM8907 (Power
Adapter/Battery Charger).
See explanation in
manual
Equal potential
inputs
Disposal information Earth
Recycling
information
Conformité
Européenne
Double Insulation
(Protection Class)
UL listed
Warning
Should this test tool be used with AC
coupling selected, or manual operation of
amplitude or time base ranges, the measuring
results displayed on the screen may not be
representative of the total signal. This can
result in the presence of dangerous voltages
of more than 42V peak (30V rms), not being
detected. To guarantee user safety, all signals
should first be measured with DC coupling
selected and in fully automatic mode. This
ensures that the full signal content is
measured.