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IM 701240-01E
Failure to comply with the precautions below could lead to injury or death or damage
to the instrument.
WARNING
Use the Instrument Only for Its Intended Purpose
This instrument is a waveform measuring device that monitors and measures
electrical signals. Do not use this instrument for anything other than as a
waveform measuring device.
Check the Physical Appearance
Do not use the instrument if there is a problem with its physical appearance.
Use the Correct Power Supply
Before connecting the power cord, ensure that the source voltage matches the
rated supply voltage of the instrument and that it is within the maximum rated
voltage of the provided power cord.
Use the Correct Power Cord and Plug
To prevent the possibility of electric shock or fire, be sure to use the power cord
supplied by YOKOGAWA. The main power plug must be plugged into an outlet
with a protective earth terminal. Do not invalidate this protection by using an
extension cord without protective earth grounding. Additionally, do not use the
power cord supplied with this instrument with another instrument.
Connect the Protective Grounding Terminal
Make sure to connect the protective earth to prevent electric shock before
turning ON the power. The power cord that comes with the instrument is a three-
prong type power 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 of the protective earth terminal. Doing so poses a potential shock hazard.
Do Not Operate with Defective Protective Grounding or Fuse
Do not operate the instrument if the protective earth or fuse might be defective.
Also, make sure to check them before operation.
Do Not Operate in an Explosive Atmosphere
Do not operate the instrument in the presence of flammable liquids or vapors.
Operation in such an environment constitutes a safety hazard.
Do Not Remove the Covers or Disassemble or Alter the Instrument
Only qualified YOKOGAWA personnel may remove the covers and disassemble
or alter the instrument. 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. If you are going to touch the circuit,
make sure to turn OFF the circuit and check that no voltage is present.
Safety Precautions