3-1
IM 760401-01E
Before Starting Measurements
3
3.1 Handling Precautions
Safety Precautions
• If you are using this instrument for the first time, make sure to thoroughly read the
“Safety Precautions” given on page vi and vii.
• Do not remove the case.
Some sections inside the instrument have high voltages that are extremely
dangerous. For internal inspection or adjustment, contact your nearest YOKOGAWA
dealer.
• Abnormal Behavior
Stop using the instrument if there are any symptoms of trouble such as strange odors
or smoke coming from the instrument. If these symptoms occur, immediately turn
OFF the power and unplug the power cord. In addition, turn OFF the power to the
DUT that is connected to the input terminal. Then, contact your nearest YOKOGAWA
dealer.
• Power Cord
Nothing should be placed on top of the power cord. The power cord should also be
kept away from any heat sources. When unplugging the power cord from the outlet,
never pull by the cord itself. Always hold and pull by the plug. If the cord is damaged,
contact your dealer for replacement. Refer to page iii for the part number of the
appropriate power cord when placing an order.
General Handling Precautions
• Do not place objects on top of the instrument.
Never place other instruments or any objects containing water on top of the
instrument. Such act can lead to malfunction.
• When Carrying the Instrument
First, turn off the object to be measured and remove all cables including measurement
cables and communication cables. Then, turn OFF the WT210/WT230 and remove
the power cord from the outlet. To carry the instrument, use the handle or carry it
using both hands.
WT210 (model: 760401) WT230 (model: 760502, 760503)
• To prevent overheating, do not block the vent holes on top and bottom panels of the
case.
• Keep electrically charged objects away from the input terminals. They may damage
the internal circuitry.
• Do not pour volatile agents on the case or operation panel nor leave them in contact
with rubber or PVC products for long periods of time. The operation panel is made of
thermoplastic resin. Make sure heating elements such as soldering bits do not come
in contact with the operation panel.
• When cleaning the case or the operation panel, first remove the power cord from the
outlet. Then, wipe with a dry, soft cloth. Do not use volatile chemicals since this
might cause discoloring and deformation.
• If you are not going to use the instrument for a long period of time, unplug the power
cord from the outlet.
Chapter 3 Before Starting Measurements
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