Efficient operation of the device requires proper site planning and maintenance and proper layout of the
equipment, rack, or cabinet (if used), and wiring closet.
To plan and create an acceptable operating environment for your device and prevent environmentally
caused equipment failures:
•
Keep the area around the chassis free from dust and conductive material, such as metal flakes.
•
Follow prescribed airflow guidelines to ensure that the cooling system functions properly and that
exhaust from other equipment does not blow into the intake vents of the device.
•
Follow the prescribed electrostatic discharge (ESD) prevention procedures to prevent damaging the
equipment. Static discharge can cause components to fail completely or intermittently over time.
•
Install the device in a secure area so that only authorized personnel can access the device.
Site Electrical Wiring Guidelines
Table 29 on page 92 describes the factors you must consider while planning the electrical wiring at your
site.
CAUTION: It is particularly important to provide a properly grounded and shielded
environment and to use electrical surge-suppression devices.
Table 29: Site Electrical Wiring Guidelines
GuidelinesSite Wiring Factor
To ensure that signaling functions optimally:
•
Install wires correctly.
Improperly installed wires can emit radio interference.
•
Do not exceed the recommended distances or pass wires between buildings.
The potential for damage from lightning strikes increases if wires exceed recommended
distances or if wires pass between buildings.
•
Shield all conductors.
The electromagnetic pulse (EMP) caused by lightning can damage unshielded
conductors and destroy electronic devices.
Signaling limitations
92
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