H3C S6520X-SI Series, Руководство по установке, Страница: 11 / 90

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Common impedance (including the grounding system) coupling.
To prevent EMI, use the following guidelines:
•
If AC power is used, use a single-phase three-wire power receptacle with protection earth (PE)
to filter interference from the power grid.
•
Keep the switch far away from radio transmitting stations, radar stations, and high-frequency
devices.
•
Use electromagnetic shielding, for example, shielded interface cables, when necessary.
•
To prevent signal ports from getting damaged by overvoltage or overcurrent caused by lightning
strikes, route interface cables only indoors.
Laser safety
WARNING!
The switch is a class 1 laser device. Disconnected optical fibers or transceiver modules might emit
invisible laser light. Do not stare into beams or view directly with optical instruments when the switch
is operating.
Installation tools
No installation tools are provided with the switch. Prepare the following tools yourself as required:
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ESD wrist strap
•
Flat-blade screwdriver
•
Phillips screwdriver
•
Needle-nose pliers
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Diagonal pliers
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Marker