Table of Contents
Advertisement
Site Preparation
RF interference can cause degradation of signal quality, and, in an Ethernet network
environment, can cause excessive collisions, loss of link status, or other physical layer
problems that can lead to poor performance or loss of communication.
To prevent RF interference, avoid the following situations:
•
Attaching UTP cable to AC power cables
•
Routing UTP cable near antennas, such as a ham radio antenna
•
Routing UTP cable near equipment that could exhibit RF interference, such as ARC
welding equipment
•
Routing UTP cable near electrical motors that contain coils
•
Routing UTP cable near air conditioner units
•
Routing UTP cable near electrical transformers
In areas or applications where these situations cannot be avoided, use fiber optic
cabling or shielded twisted pair cabling.
Meet Power Requirements
Observe the following requirements and precautions for powering your hardware.
Requirements for PoE Devices
When connecting PoE devices to a PoE switch, all connections between the PoE device
and the switch must remain within the same building and use a low-voltage power
distribution system per either IEEE 802.3at., IEEE 802.3bt., or IEEE 802.3af.
Power Supply Requirements
Follow these recommendations when you plan power supply connections for your
equipment:
•
Place the equipment in an area that accommodates the power consumption and
component heat dissipation specifications.
•
Be sure that your power supply meets the site DC power or AC power requirements
of the network equipment.
•
When you connect power to installed equipment, do not make this connection
through an extension cord or power strip.
•
If your switch includes more than one power supply, connect each power supply to a
different, independent power source.
If a power source fails, it will affect only the switch power supply to which it is
connected. If all switch power supplies are connected to a single power source, the
entire switch is vulnerable to a power source failure.
•
In regions that are susceptible to electrical storms, the best practice is to plug your
system into a surge suppressor.
For detailed power specifications for your equipment, see "Technical Specifications."
ISW Series Managed Industrial Ethernet Switch Hardware Installation Guide
Meet Power Requirements
31
Advertisement
Table of Contents
