• Follow the prescribed electrostac discharge (ESD) prevenon procedures to prevent damaging the
equipment. Stac discharge can cause components to fail completely or intermiently over me.
• Install the device in a secure area, so that only authorized personnel can access the device.
Site Electrical Wiring Guidelines
Table 20 on page 51 describes the factors you must consider while planning the electrical wiring at
your site.
WARNING: You must provide a properly grounded and shielded environment and use
electrical surge-suppression devices.
Averssement Vous devez établir un environnement protégé et convenablement mis à
la terre et uliser des disposifs de parasurtension.
Table 20: Site Electrical Wiring Guidelines
Site Wiring
Factor
Guidelines
Signaling
limitaons
If your site experiences any of the following problems, consult experts in electrical surge
suppression and shielding:
• Improperly installed wires cause radio frequency interference (RFI).
• Damage from lightning strikes occurs when wires exceed recommended distances or pass
between buildings.
• Electromagnec pulses (EMPs) caused by lightning damage unshielded conductors and
electronic devices.
Radio
frequency
interference
To reduce or eliminate RFI from your site wiring, do the following:
• Use a twisted-pair cable with a good distribuon of grounding conductors.
• If you must exceed the recommended distances, use a high-quality twisted-pair cable with
one ground conductor for each data signal, when applicable.
51
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