H3c-technologies H3C SecPath F1000-E Manual de usuario descargar pdf (Pagina 18)

Figure 12 Attaching an ESD-preventive wrist strap

(1) Alli

ator clip (2) Lock

(3) ESD-preventive wrist strap

EMI

All electromagnetic interference (EMI) sources, from outside or inside of the firewall and application

system, adversely affect the firewall in a conduction pattern of capacitance coupling, inductance

coupling, electromagnetic wave radiation, or common impedance (including grounding system)

coupling. To prevent EMI, perform the following steps:

• Take measures against interference from the power grid.

• Do not use the firewall together with the grounding equipment or lightning-prevention equipment

of power equipment, and keep the firewall far away from them.

• Keep the firewall far away from high-power radio launchers, radars, and equipment with high

frequency or high current.

• Use electromagnetic shielding when necessary.

Lightning protection

To protect the firewall from lightning better, do as follows:

• Make sure the chassis is properly grounded. For how to ground the firewall, see "Grounding the

rewall."

• Make sure the grounding terminal of the AC power receptacle is properly grounded.

• Install a lightning protector at the input end of the power supply to enhance lightning protection

capability. For more information, see "Connecting the AC power supply to a power strip with

ghtning protection."

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H3c-technologies H3C SecPath F1000-E Manual de usuario Pagina 18