Motorola CPCI-6115 Manuel de service Page 50

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CPX8216 and CPX8216T Installation and Use (6806800A52C)
Chapter 4 Site Preparation
30
Power Cords
Emerson chassis have detachable power cords that you can plug in at both the wall socket and
the equipment. Place the chassis within six feet of the electric receptacle.
Note Do not use extension cords.
Cables
The CPX8216 chassis, console, and some other peripherals use shielded cables. You can
successfully use shielded cables for communication over extended distances. Reliable
communication over cables longer than 50 feet, however, depends on the absence of electrical
noise, correct ground potentials at termination points, and other variables.
Cable Planning
When planning the installation of cables, follow these guidelines.
Do not run signal cables parallel to AC power cables if they are within four inches of each
other
Do not install signal cables close to electric motors, power line regulators, relays, or power
supplies
Avoid laying signal cables close to air conditioners, copy machines, water coolers, and
other similar equipment that generates power line “noise”
Do not run signal cables near equipment that generates radio frequency interference (for
example, radio transmitters)
Do not expose cables to moisture or heat. If you install signal cables outdoors, use a conduit
or raceway to protect them from lightning and weather.
Use shielded cable to ensure radio frequency compatibility
Use the shortest possible cable between the single-board computer and peripherals
To ensure maximum protection for equipment and operators, check the protective grounds
at each power outlet to make sure they are adequate
Protect external interconnecting cables from physical damage without endangering users.
Install the cables under a raised floor, if possible. Avoid tight pulls against sharp corners.
!
Caution
Caution
To avoid the possibility of damage to equipment or components during cabling,
unplug all other devices in the chassis before you begin the installation of any
additional units.
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