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CHAPTER 1. INTRODUCTION
1.1 Product Marking Symbols
Product will be marked with this symbol when it is necessary to refer to the
operation and service manual in order to prevent injury or equipment damage.
Product will be marked with this symbol when hazardous voltages may be present.
1.2 Safety Precaution
• This product and its related documentation must be reviewed with full
acknowledgement on safety markings and instructions before operation.
• Before applying power, verify that the instrument is set to the correct line voltage and
installed the correct fuse.
• When using an oscilloscope to measure DUT waveform, please refer description below to
avoid DUT, instrument and oscilloscope damages. When the output of AC source has N-G
or L-G shorted, customer must use differential isolation type of oscilloscope probe or
using isolated oscilloscope.
To prevent accidental injury or death, these safety procedures must be strictly observed
when handling and using the test instrument.
1.3 Service and Maintenance
User Service
To prevent electric shock do not remove the instrument cover. There are no user serviceable
parts inside. Routine maintenance or cleaning of internal parts is not necessary. Any
external cleaning should be done with a clean dry or slightly damp cloth. Avoid the use of
cleaning agents or chemicals to prevent any foreign liquid from entering the cabinet through
ventilation holes or damaging controls and switches, also some chemicals may damage plastic
parts or lettering. Any replacement cables and high voltage components should be acquired
directly from EEC or its distributor.
Service Interval
The instrument must be returned at least once a year to an EEC authorized service center for
calibration and inspection of safety related components. EEC will not be held liable for injuries
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