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Safety Information: Read First
5
Warning
To avoid electrical shock or fire if a test tool
input is connected to more than 42 V peak (30
Vrms) or on circuits of more than 4800 VA:
• Use only insulated voltage probes and test
leads (and adapters) supplied with the test
tool, or equivalents as specified in the
accessory list, see Chapter 8.
• Before use, inspect voltage probes, test
leads and accessories for mechanical
damage and replace when damaged.
• Remove all probes, test leads and
accessories that are not in use.
• Always connect the battery charger first to
the ac outlet before connecting it to the test
tool.
• Do not connect the ground spring to
voltages higher than 42 V peak (30 Vrms)
from earth ground.
• Do not apply voltages that differ more than
600 V from earth ground to any input when
measuring in a CAT III environment.
Do not apply voltages that differ more than
1000 V from earth ground to any input when
measuring in a CAT II environment.
• Do not apply voltages that differ more than
600 V from each other to the isolated inputs
when measuring in a CAT III environment.
Do not apply voltages that differ more than
1000 V from each other to the isolated inputs
when measuring in a CAT II environment.
• Do not apply input voltages above the rating
of the instrument. Use caution when using
1:1 test leads because the probe tip voltage
will be directly transmitted to the test tool.
• Do not use exposed metal BNC or banana
plug connectors.
• Do not insert metal objects into connectors.
• Always use the test tool only in the manner
specified.
Voltage ratings that are mentioned in the warnings, are
given as limits for “working voltage”. They represent
V ac rms (50-60 Hz) for ac sinewave applications and as
V dc for dc applications.
Overvoltage Category III refers to distribution level and
fixed installation circuits inside a building.
Overvoltage Category II refers to local level, which is
applicable for appliances and portable equipment.