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Table 22: Site Electrical Wiring Guidelines (continued)
Site Wiring Factor
Radio frequency
interference
Electromagnetic
compatibility
Clearance Requirements for Airflow and Hardware Maintenance for an
NFX350 Device
When planning the site for installing an NFX350 device, you must allow sufficient clearance around the
installed chassis (see
Figure 13 on page
Guidelines
To reduce or eliminate RFI from your site wiring, do the following:
Use a twisted-pair cable with a good distribution 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.
If your site is susceptible to problems with electromagnetic compatibility (EMC), particularly
from lightning or radio transmitters, seek expert advice.
Some of the problems caused by strong sources of electromagnetic interference (EMI)
are:
Destruction of the signal drivers and receivers in the device
Electrical hazards as a result of power surges conducted over the lines into the equipment
47).
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