H3C Technologies H3C S5560 Series Switches - Manual (Page 12)

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EMI
All electromagnetic interference (EMI) sources, from outside or inside of the switch and application
system, adversely affect the switch in the following ways:
• A conduction pattern of capacitance coupling.
• Inductance coupling.
• Electromagnetic wave radiation.
• Common impedance (including the grounding system) coupling.
To prevent EMI, perform the following tasks:
• 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.
Laser safety
WARNING!
Do not stare into any fiber port when the switch has power. The laser light emitted from the optical fiber
might hurt your eyes.
The S5560-EI switches are Class 1 laser devices.
Installation tools
• Flat-blade screwdriver
• Phillips screwdriver
• ESD wrist strap
All these installation tools are user supplied.