•
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.
Related
Documentation
Prevention of Electrostatic Discharge Damage on page 182
•
Site Electrical Wiring Guidelines
describes the factors you must consider while planning the electrical
wiring at your site.
WARNING:
It is particularly important to provide a properly grounded and
shielded environment and to use electrical surge-suppression devices.
Table 20: Site Electrical Wiring Guidelines
Guidelines
Site Wiring Factor
If your site experiences any of the following problems, consult experts in electrical surge
suppression and shielding:
•
Improperly installed wires cause radio frequency interference (RFI).
•
Damage from lightning strikes occurs when wires exceed recommended distances or pass
between buildings.
•
Electromagnetic pulses (EMPs) caused by lightning damage unshielded conductors and
electronic devices.
Signaling limitations
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.
Radio frequency
interference
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
Electromagnetic
compatibility
Related
Documentation
General Safety Guidelines and Warnings on page 153
•
•
General Electrical Safety Guidelines and Warnings on page 181
•
Prevention of Electrostatic Discharge Damage on page 182
Copyright © 2017, Juniper Networks, Inc.
46
QFX5110 Switch Hardware Guide
Summary of Contents for QFX5110
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