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IM DLM6054-01EN
Failure to comply with the precautions below could lead to injury
or death.
WARNING
Power Supply
Make sure that the power supply voltage matches the instrument’s rated supply voltage and
that it does not exceed the maximum voltage range specified for the power cord.
Use the Correct Power Cord and Plug
To prevent fire and electric shock, use only a power cord supplied by YOKOGAWA. The
main power plug must be plugged into an outlet with a protective earth terminal. The earth
protection will be nullified if you use an ungrounded extension cord.
Connect to a Protective Earth Terminal
To prevent electric shock, be sure to connect to a protective earth terminal before turning on
the power. The power cord that comes with the instrument is a three-prong cord. Connect the
power cord to a properly grounded three-prong outlet.
Do Not Impair the Protective Grounding
Never cut off the internal or external protective earth wire or disconnect the wiring to the
protective earth terminal. Doing so may result in electric shock or damage to the instrument.
Do Not Operate with Defective Protective Grounding or Fuses
Do not operate the instrument if its protective grounding or one of its fuses might be defective.
Check the grounding and the fuses before operating the instrument.
Do Not Operate in an Explosive Atmosphere
Do not operate the instrument in the presence of flammable gasses or vapors. Doing so is
extremely dangerous.
Do Not Remove Covers
Only qualified YOKOGAWA personnel should remove the instrument’s covers. The inside of
the instrument is dangerous because parts of it have high voltages.
Ground the Instrument before Making External Connections
Securely connect the protective grounding before connecting to the item under measurement
or to an external control unit. Before touching a circuit, turn off its power and check that it has
no voltage.
To prevent accidents and electric shock, connect the grounds of probes and input connectors
to the earth potential (ground) of the device under measurement.
Operating Environment Limitations
CAUTION
This is a class A instrument designed for an industrial environment. Operation of this
equipment in a residential area can cause radio interference, in which case users will be
required to correct the interference.
Safety Precautions
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