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, test leads
and adapters supplied with the test tool, or
indicated by Fluke as suitable for the Fluke190
ScopeMeter series.
• 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 (figure 1,
item f) 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.
