Installation Manual
H3C VG 10-40/10-41 Voice Gateway
Chapter 2 Installation Preparation
2-4
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Maintain adequate temperature and humidity;
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Wear the ESD-preventive wrist strap and clothes when
contacting the circuit board;
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Place the removed circuit board upward on the
ESD-preventive workbench, or into a static shielded bag;
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Hold the circuit board by the outer edge when observing or
moving it, thus avoiding direct contact with the elements on
it.
Warning:
There is a seal on one of the mounting screws on the VG chassis.
Before you ask the agent to maintain your VG, the seal is required to
be untouched. Please contact the local agent and get permission
before opening the chassis. Otherwise, you will have to bear all
consequences of the operations done without the permission of the
agent.
2.1.4 Electromagnetic Environment Requirements
All interference sources, wherever they are from, will influence a
VG negatively in the conduction patterns of capacitance coupling,
inductance coupling, electromagnetic wave radiation, and common
impedance (including the grounding system) coupling. For the
purpose of preventing the interference, please
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Take effective measures against the interference caused by
the power supply system;