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Safety Instruction
This chapter contains important safety instructions that you must follow when operating the instrument and when
keeping it in storage. Read the following before any operation to insure your safety and to keep the best condition
for the instrument.
1. Safety Terms and Symbols
The following safety symbols may appear in this manual or on the instrument:
WARNING
Identifies conditions or practices that could result in injury or loss of life.
CAUTION
Identifies conditions or practices that could result in damage to the instrument or to
other properties.
DANGER
High voltage
ATTENTION
Refer to the manual
Earth (ground) terminal
2. Safety Guidelines
CAUTION
z Before plugging into local AC mains, check and make sure that the output voltage
is compatible to the load. (It is suggested to disconnect a load before plugging into
local AC mains.)
z Do not use this instrument near water.
z Do not operate or touch this instrument with wet hands.
z Do not open the casing of the instrument when it is connected to AC mains.
z Do not use the instrument in an atmosphere which contains sulfuric acid mist or
other substances which cause corrosion to metal.
z Do not use the instrument in a dusty place or a highly humid place as such will
cause instrument reliability degradation and instrument failures.
z Install the instrument in a place where is free from vibration.
z Install the instrument in a place where the ambient temperature is in range of
-10~70℃. Note that the instrument operation may become unstable if it is
operated in an ambient temperature exceeding the range of 0~40℃.
3. Power Supply
WARNING
AC Input voltage: 110V~120V/220~240V ±10%, 50/60Hz
Connect the protective grounding conductor of the AC power cord to an earth ground
to avoid electrical shock.
4. Fuse
WARNING
z Fuse type: 110~120V: T2A /250V, or 220~240V: T1A/250V.
z Make sure the correct type of fuse is installed before power up.
z Replace the AC fuse with the same type and rating as the original fuse.
z Disconnect the power cord before fuse replacement.
z Make sure the cause of fuse blowout is fixed before fuse replacement.
II
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