Chapter 2 Preparing for Installation
Installation Site Requirements
Site Wiring
This section presents site wiring guidelines for setting up the plant wiring and cabling at your site. When planning the location of the new system, consider the following:
•Electromagnetic interference (EMI)
•Distance limitations for signaling and unshielded conductors
Electromagnetic Interference
EMI can occur between the signals on the wires and external or ambient EMI fields when the wires are run for any significant distance. Bad wiring practice can result in radio interference emanating from the plant wiring.
Warning Strong EMI, especially when it is caused by lightning or radio transmitters, can destroy the signal drivers and receivers in the Cisco XR 12406 Router, can create an electrical hazard by conducting power surges through lines, and can damage the equipment.
To predict and remedy strong EMI, you may need to consult experts in radio- frequency interference (RFI).
If you use
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